New upstream version 1.11.0+dfsgupstream/1.11.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

43 files changed, 7596 insertions, 0 deletions

diff --git a/health/notifications/Makefile.am b/health/notifications/Makefile.am
new file mode 100644
index 00000000..a5b88f0d
--- /dev/null
+++ b/health/notifications/Makefile.am
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+CLEANFILES = \
+	alarm-notify.sh \
+	$(NULL)
+
+include $(top_srcdir)/build/subst.inc
+SUFFIXES = .in
+
+dist_libconfig_DATA = \
+    health_alarm_notify.conf \
+    health_email_recipients.conf \
+    $(NULL)
+
+dist_plugins_SCRIPTS = \
+	alarm-notify.sh \
+	alarm-email.sh \
+	alarm-test.sh \
+	$(NULL)
+
+dist_noinst_DATA = \
+	alarm-notify.sh.in \
+	README.md \
+	$(NULL)
+
+include alerta/Makefile.inc
+include awssns/Makefile.inc
+include discord/Makefile.inc
+include email/Makefile.inc
+include flock/Makefile.inc
+include irc/Makefile.inc
+include kavenegar/Makefile.inc
+include messagebird/Makefile.inc
+include pagerduty/Makefile.inc
+include pushbullet/Makefile.inc
+include pushover/Makefile.inc
+include rocketchat/Makefile.inc
+include slack/Makefile.inc
+include syslog/Makefile.inc
+include telegram/Makefile.inc
+include twilio/Makefile.inc
+include web/Makefile.inc
diff --git a/health/notifications/Makefile.in b/health/notifications/Makefile.in
new file mode 100644
index 00000000..05a5814f
--- /dev/null
+++ b/health/notifications/Makefile.in
@@ -0,0 +1,754 @@
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+	syslog/Makefile.inc $(NULL) telegram/README.md \
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+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu health/notifications/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu health/notifications/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
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+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(pluginsdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(pluginsdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  if test -f "$$d$$p"; then echo "$$d$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n' \
+	    -e 'h;s|.*|.|' \
+	    -e 'p;x;s,.*/,,;$(transform)' | sed 'N;N;N;s,\n, ,g' | \
+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1; } \
+	  { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
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+	    else { print "f", d "/" $$4, $$1 } } \
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+	while read type dir files; do \
+	     if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	     test -z "$$files" || { \
+	       echo " $(INSTALL_SCRIPT) $$files '$(DESTDIR)$(pluginsdir)$$dir'"; \
+	       $(INSTALL_SCRIPT) $$files "$(DESTDIR)$(pluginsdir)$$dir" || exit $$?; \
+	     } \
+	; done
+
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+	@list='$(dist_plugins_SCRIPTS)'; test -n "$(pluginsdir)" || exit 0; \
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+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(libconfigdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(libconfigdir)" || exit 1; \
+	fi; \
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+	done | $(am__base_list) | \
+	while read files; do \
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+	done
+
+uninstall-dist_libconfigDATA:
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+	@list='$(dist_libconfig_DATA)'; test -n "$(libconfigdir)" || list=; \
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+
+ctags CTAGS:
+
+cscope cscopelist:
+
+
+distdir: $(DISTFILES)
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+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
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+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
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+check: check-am
+all-am: Makefile $(SCRIPTS) $(DATA)
+installdirs:
+	for dir in "$(DESTDIR)$(pluginsdir)" "$(DESTDIR)$(libconfigdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
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+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
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+	-rm -f Makefile
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+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
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+	install-dist_pluginsSCRIPTS install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
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+	maintainer-clean-generic mostlyclean mostlyclean-generic pdf \
+	pdf-am ps ps-am tags-am uninstall uninstall-am \
+	uninstall-dist_libconfigDATA uninstall-dist_pluginsSCRIPTS
+
+.in:
+	if sed \
+		-e 's#[@]localstatedir_POST@#$(localstatedir)#g' \
+		-e 's#[@]sbindir_POST@#$(sbindir)#g' \
+		-e 's#[@]sysconfdir_POST@#$(sysconfdir)#g' \
+		-e 's#[@]pythondir_POST@#$(pythondir)#g' \
+		-e 's#[@]configdir_POST@#$(configdir)#g' \
+		-e 's#[@]libconfigdir_POST@#$(libconfigdir)#g' \
+		-e 's#[@]cachedir_POST@#$(cachedir)#g' \
+		$< > $@.tmp; then \
+		mv "$@.tmp" "$@"; \
+	else \
+		rm -f "$@.tmp"; \
+		false; \
+	fi
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/health/notifications/README.md b/health/notifications/README.md
new file mode 100644
index 00000000..c06638ad
--- /dev/null
+++ b/health/notifications/README.md
@@ -0,0 +1,60 @@
+# Netdata alarm notifications
+
+The `exec` line in health configuration defines an external script that will be called once
+the alarm is triggered. The default script is **[alarm-notify.sh](alarm-notify.sh.in)**.
+
+You can change the default script globally by editing `/etc/netdata/netdata.conf`.
+
+`alarm-notify.sh` is capable of sending notifications:
+
+- to multiple recipients
+- using multiple notification methods
+- filtering severity per recipient
+
+It uses **roles**. For example `sysadmin`, `webmaster`, `dba`, etc.
+
+Each alarm is assigned to one or more roles, using the `to` line of the alarm configuration.
+Then `alarm-notify.sh` uses its own configuration file `/etc/netdata/health_alarm_notify.conf`
+the default is [here](health_alarm_notify.conf)
+(to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`)
+to find the destination address of the notification for each method.
+
+Each role may have one or more destinations.
+
+So, for example the `sysadmin` role may send:
+
+1. emails to admin1@example.com and admin2@example.com
+2. pushover.net notifications to USERTOKENS `A`, `B` and `C`.
+3. pushbullet.com push notifications to admin1@example.com and admin2@example.com
+4. messages to slack.com channel `#alarms` and `#systems`.
+5. messages to Discord channels `#alarms` and `#systems`.
+
+## Configuration
+
+Edit [`/etc/netdata/health_alarm_notify.conf`](health_alarm_notify.conf)
+by running `/etc/netdata/edit-config health_alarm_notify.conf`:
+
+- settings per notification method:
+
+   all notification methods except email, require some configuration
+   (i.e. API keys, tokens, destination rooms, channels, etc).
+
+2. **recipients** per **role** per **notification method**
+
+## Testing Notifications
+
+You can run the following command by hand, to test alarms configuration:
+
+```sh
+# become user netdata
+su -s /bin/bash netdata
+
+# enable debugging info on the console
+export NETDATA_ALARM_NOTIFY_DEBUG=1
+
+# send test alarms to sysadmin
+/usr/libexec/netdata/plugins.d/alarm-notify.sh test
+
+# send test alarms to any role
+/usr/libexec/netdata/plugins.d/alarm-notify.sh test "ROLE"
+```
diff --git a/health/notifications/alarm-email.sh b/health/notifications/alarm-email.sh
new file mode 100755
index 00000000..69c4c3f8
--- /dev/null
+++ b/health/notifications/alarm-email.sh
@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# OBSOLETE - REPLACED WITH
+# alarm-notify.sh
+
+${0/alarm-email.sh/alarm-notify.sh} "${@}"
diff --git a/health/notifications/alarm-notify.sh b/health/notifications/alarm-notify.sh
new file mode 100644
index 00000000..33a59590
--- /dev/null
+++ b/health/notifications/alarm-notify.sh
@@ -0,0 +1,2378 @@
+#!/usr/bin/env bash
+
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2017 Costa Tsaousis <costa@tsaousis.gr>
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# Script to send alarm notifications for netdata
+#
+# Features:
+#  - multiple notification methods
+#  - multiple roles per alarm
+#  - multiple recipients per role
+#  - severity filtering per recipient
+#
+# Supported notification methods:
+#  - emails by @ktsaou
+#  - slack.com notifications by @ktsaou
+#  - alerta.io notifications by @kattunga
+#  - discordapp.com notifications by @lowfive
+#  - pushover.net notifications by @ktsaou
+#  - pushbullet.com push notifications by Tiago Peralta @tperalta82 #1070
+#  - telegram.org notifications by @hashworks #1002
+#  - twilio.com notifications by Levi Blaney @shadycuz #1211
+#  - kafka notifications by @ktsaou #1342
+#  - pagerduty.com notifications by Jim Cooley @jimcooley #1373
+#  - messagebird.com notifications by @tech_no_logical #1453
+#  - hipchat notifications by @ktsaou #1561
+#  - fleep notifications by @Ferroin
+#  - custom notifications by @ktsaou
+#  - syslog messages by @Ferroin
+#  - Microsoft Team notification by @tioumen
+
+# -----------------------------------------------------------------------------
+# testing notifications
+
+
+if [ \( "${1}" = "test" -o "${2}" = "test" \) -a "${#}" -le 2 ]
+then
+    if [ "${2}" = "test" ]
+    then
+        recipient="${1}"
+    else
+        recipient="${2}"
+    fi
+
+    [ -z "${recipient}" ] && recipient="sysadmin"
+
+    id=1
+    last="CLEAR"
+    test_res=0
+    for x in "WARNING" "CRITICAL"  "CLEAR"
+    do
+        echo >&2
+        echo >&2 "# SENDING TEST ${x} ALARM TO ROLE: ${recipient}"
+
+        "${0}" "${recipient}" "$(hostname)" 1 1 "${id}" "$(date +%s)" "test_alarm" "test.chart" "test.family" "${x}" "${last}" 100 90 "${0}" 1 $((0 + id)) "units" "this is a test alarm to verify notifications work" "new value" "old value"
+        if [ $? -ne 0 ]
+        then
+            echo >&2 "# FAILED"
+            test_res=1
+        else
+            echo >&2 "# OK"
+        fi
+
+        last="${x}"
+        id=$((id + 1))
+    done
+
+    exit $test_res
+fi
+
+export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
+export LC_ALL=C
+
+# -----------------------------------------------------------------------------
+
+PROGRAM_NAME="$(basename "${0}")"
+
+logdate() {
+    date "+%Y-%m-%d %H:%M:%S"
+}
+
+log() {
+    local status="${1}"
+    shift
+
+    echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}"
+
+}
+
+warning() {
+    log WARNING "${@}"
+}
+
+error() {
+    log ERROR "${@}"
+}
+
+info() {
+    log INFO "${@}"
+}
+
+fatal() {
+    log FATAL "${@}"
+    exit 1
+}
+
+debug=${NETDATA_ALARM_NOTIFY_DEBUG-0}
+debug() {
+    [ "${debug}" = "1" ] && log DEBUG "${@}"
+}
+
+docurl() {
+    if [ -z "${curl}" ]
+        then
+        error "\${curl} is unset."
+        return 1
+    fi
+
+    if [ "${debug}" = "1" ]
+        then
+        echo >&2 "--- BEGIN curl command ---"
+        printf >&2 "%q " ${curl} "${@}"
+        echo >&2
+        echo >&2 "--- END curl command ---"
+
+        local out=$(mktemp /tmp/netdata-health-alarm-notify-XXXXXXXX)
+        local code=$(${curl} ${curl_options} --write-out %{http_code} --output "${out}" --silent --show-error "${@}")
+        local ret=$?
+        echo >&2 "--- BEGIN received response ---"
+        cat >&2 "${out}"
+        echo >&2
+        echo >&2 "--- END received response ---"
+        echo >&2 "RECEIVED HTTP RESPONSE CODE: ${code}"
+        rm "${out}"
+        echo "${code}"
+        return ${ret}
+    fi
+
+    ${curl} ${curl_options} --write-out %{http_code} --output /dev/null --silent --show-error "${@}"
+    return $?
+}
+
+# -----------------------------------------------------------------------------
+# this is to be overwritten by the config file
+
+custom_sender() {
+    info "not sending custom notification for ${status} of '${host}.${chart}.${name}'"
+}
+
+
+# -----------------------------------------------------------------------------
+
+# check for BASH v4+ (required for associative arrays)
+[ $(( ${BASH_VERSINFO[0]} )) -lt 4 ] && \
+    fatal "BASH version 4 or later is required (this is ${BASH_VERSION})."
+
+# -----------------------------------------------------------------------------
+# defaults to allow running this script by hand
+
+[ -z "${NETDATA_USER_CONFIG_DIR}"  ] && NETDATA_USER_CONFIG_DIR="/usr/local/etc/netdata"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="/usr/local/lib/netdata/conf.d"
+[ -z "${NETDATA_CACHE_DIR}"        ] && NETDATA_CACHE_DIR="/usr/local/var/cache/netdata"
+[ -z "${NETDATA_REGISTRY_URL}"     ] && NETDATA_REGISTRY_URL="https://registry.my-netdata.io"
+
+# -----------------------------------------------------------------------------
+# parse command line parameters
+
+roles="${1}"               # the roles that should be notified for this event
+host="${2}"                # the host generated this event
+unique_id="${3}"           # the unique id of this event
+alarm_id="${4}"            # the unique id of the alarm that generated this event
+event_id="${5}"            # the incremental id of the event, for this alarm id
+when="${6}"                # the timestamp this event occurred
+name="${7}"                # the name of the alarm, as given in netdata health.d entries
+chart="${8}"               # the name of the chart (type.id)
+family="${9}"              # the family of the chart
+status="${10}"             # the current status : REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
+old_status="${11}"         # the previous status: REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
+value="${12}"              # the current value of the alarm
+old_value="${13}"          # the previous value of the alarm
+src="${14}"                # the line number and file the alarm has been configured
+duration="${15}"           # the duration in seconds of the previous alarm state
+non_clear_duration="${16}" # the total duration in seconds this is/was non-clear
+units="${17}"              # the units of the value
+info="${18}"               # a short description of the alarm
+value_string="${19}"       # friendly value (with units)
+old_value_string="${20}"   # friendly old value (with units)
+
+# -----------------------------------------------------------------------------
+# find a suitable hostname to use, if netdata did not supply a hostname
+
+this_host=$(hostname -s 2>/dev/null)
+[ -z "${host}" ] && host="${this_host}"
+
+# -----------------------------------------------------------------------------
+# screen statuses we don't need to send a notification
+
+# don't do anything if this is not WARNING, CRITICAL or CLEAR
+if [ "${status}" != "WARNING" -a "${status}" != "CRITICAL" -a "${status}" != "CLEAR" ]
+then
+    info "not sending notification for ${status} of '${host}.${chart}.${name}'"
+    exit 1
+fi
+
+# don't do anything if this is CLEAR, but it was not WARNING or CRITICAL
+if [ "${old_status}" != "WARNING" -a "${old_status}" != "CRITICAL" -a "${status}" = "CLEAR" ]
+then
+    info "not sending notification for ${status} of '${host}.${chart}.${name}' (last status was ${old_status})"
+    exit 1
+fi
+
+# -----------------------------------------------------------------------------
+# load configuration
+
+# By default fetch images from the global public registry.
+# This is required by default, since all notification methods need to download
+# images via the Internet, and private registries might not be reachable.
+# This can be overwritten at the configuration file.
+images_base_url="https://registry.my-netdata.io"
+
+# curl options to use
+curl_options=""
+
+# needed commands
+# if empty they will be searched in the system path
+curl=
+sendmail=
+
+# enable / disable features
+SEND_SLACK="YES"
+SEND_MSTEAM="YES"
+SEND_ALERTA="YES"
+SEND_FLOCK="YES"
+SEND_DISCORD="YES"
+SEND_PUSHOVER="YES"
+SEND_TWILIO="YES"
+SEND_HIPCHAT="YES"
+SEND_MESSAGEBIRD="YES"
+SEND_KAVENEGAR="YES"
+SEND_TELEGRAM="YES"
+SEND_EMAIL="YES"
+SEND_PUSHBULLET="YES"
+SEND_KAFKA="YES"
+SEND_PD="YES"
+SEND_FLEEP="YES"
+SEND_IRC="YES"
+SEND_AWSSNS="YES"
+SEND_SYSLOG="NO"
+SEND_CUSTOM="YES"
+
+# slack configs
+SLACK_WEBHOOK_URL=
+DEFAULT_RECIPIENT_SLACK=
+declare -A role_recipients_slack=()
+
+# Microsoft Team configs
+MSTEAM_WEBHOOK_URL=
+DEFAULT_RECIPIENT_MSTEAM=
+declare -A role_recipients_msteam=()
+
+# rocketchat configs
+ROCKETCHAT_WEBHOOK_URL=
+DEFAULT_RECIPIENT_ROCKETCHAT=
+declare -A role_recipients_rocketchat=()
+
+# alerta configs
+ALERTA_WEBHOOK_URL=
+ALERTA_API_KEY=
+DEFAULT_RECIPIENT_ALERTA=
+declare -A role_recipients_alerta=()
+
+# flock configs
+FLOCK_WEBHOOK_URL=
+DEFAULT_RECIPIENT_FLOCK=
+declare -A role_recipients_flock=()
+
+# discord configs
+DISCORD_WEBHOOK_URL=
+DEFAULT_RECIPIENT_DISCORD=
+declare -A role_recipients_discord=()
+
+# pushover configs
+PUSHOVER_APP_TOKEN=
+DEFAULT_RECIPIENT_PUSHOVER=
+declare -A role_recipients_pushover=()
+
+# pushbullet configs
+PUSHBULLET_ACCESS_TOKEN=
+PUSHBULLET_SOURCE_DEVICE=
+DEFAULT_RECIPIENT_PUSHBULLET=
+declare -A role_recipients_pushbullet=()
+
+# twilio configs
+TWILIO_ACCOUNT_SID=
+TWILIO_ACCOUNT_TOKEN=
+TWILIO_NUMBER=
+DEFAULT_RECIPIENT_TWILIO=
+declare -A role_recipients_twilio=()
+
+# hipchat configs
+HIPCHAT_SERVER=
+HIPCHAT_AUTH_TOKEN=
+DEFAULT_RECIPIENT_HIPCHAT=
+declare -A role_recipients_hipchat=()
+
+# messagebird configs
+MESSAGEBIRD_ACCESS_KEY=
+MESSAGEBIRD_NUMBER=
+DEFAULT_RECIPIENT_MESSAGEBIRD=
+declare -A role_recipients_messagebird=()
+
+# kavenegar configs
+KAVENEGAR_API_KEY=""
+KAVENEGAR_SENDER=""
+DEFAULT_RECIPIENT_KAVENEGAR=()
+declare -A role_recipients_kavenegar=""
+
+# telegram configs
+TELEGRAM_BOT_TOKEN=
+DEFAULT_RECIPIENT_TELEGRAM=
+declare -A role_recipients_telegram=()
+
+# kafka configs
+KAFKA_URL=
+KAFKA_SENDER_IP=
+
+# pagerduty.com configs
+PD_SERVICE_KEY=
+DEFAULT_RECIPIENT_PD=
+declare -A role_recipients_pd=()
+
+# fleep.io configs
+FLEEP_SENDER="${host}"
+DEFAULT_RECIPIENT_FLEEP=
+declare -A role_recipients_fleep=()
+
+# Amazon SNS configs
+DEFAULT_RECIPIENT_AWSSNS=
+AWSSNS_MESSAGE_FORMAT=
+declare -A role_recipients_awssns=()
+
+# syslog configs
+SYSLOG_FACILITY=
+declare -A role_recipients_syslog=()
+
+# custom configs
+DEFAULT_RECIPIENT_CUSTOM=
+declare -A role_recipients_custom=()
+
+# email configs
+EMAIL_SENDER=
+DEFAULT_RECIPIENT_EMAIL="root"
+EMAIL_CHARSET=$(locale charmap 2>/dev/null)
+EMAIL_THREADING=
+declare -A role_recipients_email=()
+
+# irc configs
+IRC_NICKNAME=
+IRC_REALNAME=
+DEFAULT_RECIPIENT_IRC=
+IRC_NETWORK=
+declare -A role_recipients_irc=()
+
+# load the stock and user configuration files
+# these will overwrite the variables above
+
+for CONFIG in "${NETDATA_STOCK_CONFIG_DIR}/health_alarm_notify.conf" "${NETDATA_USER_CONFIG_DIR}/health_alarm_notify.conf"
+do
+    if [ -f "${CONFIG}" ]
+        then
+        debug "Loading config file '${CONFIG}'..."
+        source "${CONFIG}"
+        [ $? -ne 0 ] && error "Failed to load config file '${CONFIG}'."
+    else
+        warning "Cannot find file '${CONFIG}'."
+    fi
+done
+
+# If we didn't autodetect the character set for e-mail and it wasn't
+# set by the user, we need to set it to a reasonable default.  UTF-8
+# should be correct for almost all modern UNIX systems.
+if [ -z ${EMAIL_CHARSET} ]
+    then
+    EMAIL_CHARSET="UTF-8"
+fi
+
+# -----------------------------------------------------------------------------
+# filter a recipient based on alarm event severity
+
+filter_recipient_by_criticality() {
+    local method="${1}" x="${2}" r s
+    shift
+
+    r="${x/|*/}" # the recipient
+    s="${x/*|/}" # the severity required for notifying this recipient
+
+    # no severity filtering for this person
+    [ "${r}" = "${s}" ] && return 0
+
+    # the severity is invalid
+    s="${s^^}"
+    if [ "${s}" != "CRITICAL" ]
+    then
+        error "SEVERITY FILTERING for ${x} VIA ${method}: invalid severity '${s,,}', only 'critical' is supported."
+        return 0
+    fi
+
+    # create the status tracking directory for this user
+    [ ! -d "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}" ] && \
+        mkdir -p "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}"
+
+    case "${status}" in
+        CRITICAL)
+            # make sure he will get future notifications for this alarm too
+            touch "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}"
+            debug "SEVERITY FILTERING for ${x} VIA ${method}: ALLOW: the alarm is CRITICAL (will now receive next status change)"
+            return 0
+            ;;
+
+        WARNING)
+            if [ -f "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}" ]
+            then
+                # we do not remove the file, so that he will get future notifications of this alarm
+                debug "SEVERITY FILTERING for ${x} VIA ${method}: ALLOW: recipient has been notified for this alarm in the past (will still receive next status change)"
+                return 0
+            fi
+            ;;
+
+        *)
+            if [ -f "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}" ]
+            then
+                # remove the file, so that he will only receive notifications for CRITICAL states for this alarm
+                rm "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}"
+                debug "SEVERITY FILTERING for ${x} VIA ${method}: ALLOW: recipient has been notified for this alarm (will only receive CRITICAL notifications from now on)"
+                return 0
+            fi
+            ;;
+    esac
+
+    debug "SEVERITY FILTERING for ${x} VIA ${method}: BLOCK: recipient should not receive this notification"
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# find the recipients' addresses per method
+
+declare -A arr_slack=()
+declare -A arr_msteam=()
+declare -A arr_rocketchat=()
+declare -A arr_alerta=()
+declare -A arr_flock=()
+declare -A arr_discord=()
+declare -A arr_pushover=()
+declare -A arr_pushbullet=()
+declare -A arr_twilio=()
+declare -A arr_hipchat=()
+declare -A arr_telegram=()
+declare -A arr_pd=()
+declare -A arr_email=()
+declare -A arr_custom=()
+declare -A arr_messagebird=()
+declare -A arr_kavenegar=()
+declare -A arr_fleep=()
+declare -A arr_irc=()
+declare -A arr_syslog=()
+declare -A arr_awssns=()
+
+# netdata may call us with multiple roles, and roles may have multiple but
+# overlapping recipients - so, here we find the unique recipients.
+for x in ${roles//,/ }
+do
+    # the roles 'silent' and 'disabled' mean:
+    # don't send a notification for this role
+    [ "${x}" = "silent" -o "${x}" = "disabled" ] && continue
+
+    # email
+    a="${role_recipients_email[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_EMAIL}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality email "${r}" && arr_email[${r/|*/}]="1"
+    done
+
+    # pushover
+    a="${role_recipients_pushover[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_PUSHOVER}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality pushover "${r}" && arr_pushover[${r/|*/}]="1"
+    done
+
+    # pushbullet
+    a="${role_recipients_pushbullet[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_PUSHBULLET}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality pushbullet "${r}" && arr_pushbullet[${r/|*/}]="1"
+    done
+
+    # twilio
+    a="${role_recipients_twilio[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_TWILIO}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality twilio "${r}" && arr_twilio[${r/|*/}]="1"
+    done
+
+    # hipchat
+    a="${role_recipients_hipchat[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_HIPCHAT}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality hipchat "${r}" && arr_hipchat[${r/|*/}]="1"
+    done
+
+    # messagebird
+    a="${role_recipients_messagebird[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_MESSAGEBIRD}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality messagebird "${r}" && arr_messagebird[${r/|*/}]="1"
+    done
+
+    # kavenegar
+    a="${role_recipients_kavenegar[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_KAVENEGAR}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality kavenegar "${r}" && arr_kavenegar[${r/|*/}]="1"
+    done
+
+    # telegram
+    a="${role_recipients_telegram[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_TELEGRAM}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality telegram "${r}" && arr_telegram[${r/|*/}]="1"
+    done
+
+    # slack
+    a="${role_recipients_slack[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_SLACK}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality slack "${r}" && arr_slack[${r/|*/}]="1"
+    done
+
+    # Microsoft Team
+    a="${role_recipients_msteam[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_MSTEAM}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality msteam "${r}" && arr_msteam[${r/|*/}]="1"
+    done
+
+    # rocketchat
+    a="${role_recipients_rocketchat[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_ROCKETCHAT}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality rocketchat "${r}" && arr_rocketchat[${r/|*/}]="1"
+    done
+
+    # alerta
+    a="${role_recipients_alerta[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_ALERTA}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality alerta "${r}" && arr_alerta[${r/|*/}]="1"
+    done
+
+    # flock
+    a="${role_recipients_flock[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_FLOCK}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality flock "${r}" && arr_flock[${r/|*/}]="1"
+    done
+
+    # discord
+    a="${role_recipients_discord[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_DISCORD}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality discord "${r}" && arr_discord[${r/|*/}]="1"
+    done
+
+    # pagerduty.com
+    a="${role_recipients_pd[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_PD}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality pd "${r}" && arr_pd[${r/|*/}]="1"
+    done
+
+    # fleep.io
+    a="${role_recipients_fleep[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_FLEEP}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality fleep "${r}" && arr_fleep[${r/|*/}]="1"
+    done
+
+    # irc
+    a="${role_recipients_irc[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_IRC}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality irc "${r}" && arr_irc[${r/|*/}]="1"
+    done
+
+    # amazon sns
+    a="${role_recipients_awssns[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_AWSSNS}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality awssns "${r}" && arr_awssns[${r/|*/}]="1"
+    done
+
+    # syslog
+    a="${role_recipients_syslog[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_SYSLOG}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality syslog "${r}" && arr_syslog[${r/|*/}]="1"
+    done
+
+    # custom
+    a="${role_recipients_custom[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_CUSTOM}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality custom "${r}" && arr_custom[${r/|*/}]="1"
+    done
+
+done
+
+# build the list of slack recipients (channels)
+to_slack="${!arr_slack[*]}"
+[ -z "${to_slack}" ] && SEND_SLACK="NO"
+
+# build the list of Microsoft team recipients (channels)
+to_msteam="${!arr_msteam[*]}"
+[ -z "${to_msteam}" ] && SEND_MSTEAM="NO"
+
+# build the list of rocketchat recipients (channels)
+to_rocketchat="${!arr_rocketchat[*]}"
+[ -z "${to_rocketchat}" ] && SEND_ROCKETCHAT="NO"
+
+# build the list of alerta recipients (channels)
+to_alerta="${!arr_alerta[*]}"
+[ -z "${to_alerta}" ] && SEND_ALERTA="NO"
+
+# build the list of flock recipients (channels)
+to_flock="${!arr_flock[*]}"
+[ -z "${to_flock}" ] && SEND_FLOCK="NO"
+
+# build the list of discord recipients (channels)
+to_discord="${!arr_discord[*]}"
+[ -z "${to_discord}" ] && SEND_DISCORD="NO"
+
+# build the list of pushover recipients (user tokens)
+to_pushover="${!arr_pushover[*]}"
+[ -z "${to_pushover}" ] && SEND_PUSHOVER="NO"
+
+# build the list of pushbulet recipients (user tokens)
+to_pushbullet="${!arr_pushbullet[*]}"
+[ -z "${to_pushbullet}" ] && SEND_PUSHBULLET="NO"
+
+# build the list of twilio recipients (phone numbers)
+to_twilio="${!arr_twilio[*]}"
+[ -z "${to_twilio}" ] && SEND_TWILIO="NO"
+
+# build the list of hipchat recipients (rooms)
+to_hipchat="${!arr_hipchat[*]}"
+[ -z "${to_hipchat}" ] && SEND_HIPCHAT="NO"
+
+# build the list of messagebird recipients (phone numbers)
+to_messagebird="${!arr_messagebird[*]}"
+[ -z "${to_messagebird}" ] && SEND_MESSAGEBIRD="NO"
+
+# build the list of kavenegar recipients (phone numbers)
+to_kavenegar="${!arr_kavenegar[*]}"
+[ -z "${to_kavenegar}" ] && SEND_KAVENEGAR="NO"
+
+# check array of telegram recipients (chat ids)
+to_telegram="${!arr_telegram[*]}"
+[ -z "${to_telegram}" ] && SEND_TELEGRAM="NO"
+
+# build the list of pagerduty recipients (service keys)
+to_pd="${!arr_pd[*]}"
+[ -z "${to_pd}" ] && SEND_PD="NO"
+
+# build the list of fleep recipients (conversation webhooks)
+to_fleep="${!arr_fleep[*]}"
+[ -z "${to_fleep}" ] && SEND_FLEEP="NO"
+
+# build the list of custom recipients
+to_custom="${!arr_custom[*]}"
+[ -z "${to_custom}" ] && SEND_CUSTOM="NO"
+
+# build the list of email recipients (email addresses)
+to_email=
+for x in "${!arr_email[@]}"
+do
+    [ ! -z "${to_email}" ] && to_email="${to_email}, "
+    to_email="${to_email}${x}"
+done
+[ -z "${to_email}" ] && SEND_EMAIL="NO"
+
+# build the list of irc recipients (channels)
+to_irc="${!arr_irc[*]}"
+[ -z "${to_irc}" ] && SEND_IRC="NO"
+
+# build the list of awssns recipients (facilities, servers, and prefixes)
+to_awssns="${!arr_awssns[*]}"
+[ -z "${to_awssns}" ] && SEND_AWSSNS="NO"
+
+# build the list of syslog recipients (facilities, servers, and prefixes)
+to_syslog="${!arr_syslog[*]}"
+[ -z "${to_syslog}" ] && SEND_SYSLOG="NO"
+
+# -----------------------------------------------------------------------------
+# verify the delivery methods supported
+
+# check slack
+[ -z "${SLACK_WEBHOOK_URL}" ] && SEND_SLACK="NO"
+
+# check rocketchat
+[ -z "${ROCKETCHAT_WEBHOOK_URL}" ] && SEND_ROCKETCHAT="NO"
+
+# check alerta
+[ -z "${ALERTA_WEBHOOK_URL}" ] && SEND_ALERTA="NO"
+
+# check flock
+[ -z "${FLOCK_WEBHOOK_URL}" ] && SEND_FLOCK="NO"
+
+# check discord
+[ -z "${DISCORD_WEBHOOK_URL}" ] && SEND_DISCORD="NO"
+
+# check pushover
+[ -z "${PUSHOVER_APP_TOKEN}" ] && SEND_PUSHOVER="NO"
+
+# check pushbullet
+[ -z "${PUSHBULLET_ACCESS_TOKEN}" ] && SEND_PUSHBULLET="NO"
+
+# check twilio
+[ -z "${TWILIO_ACCOUNT_TOKEN}" -o -z "${TWILIO_ACCOUNT_SID}" -o -z "${TWILIO_NUMBER}" ] && SEND_TWILIO="NO"
+
+# check hipchat
+[ -z "${HIPCHAT_AUTH_TOKEN}" ] && SEND_HIPCHAT="NO"
+
+# check messagebird
+[ -z "${MESSAGEBIRD_ACCESS_KEY}" -o -z "${MESSAGEBIRD_NUMBER}" ] && SEND_MESSAGEBIRD="NO"
+
+# check kavenegar
+[ -z "${KAVENEGAR_API_KEY}" -o -z "${KAVENEGAR_SENDER}" ] && SEND_KAVENEGAR="NO"
+
+# check telegram
+[ -z "${TELEGRAM_BOT_TOKEN}" ] && SEND_TELEGRAM="NO"
+
+# check kafka
+[ -z "${KAFKA_URL}" -o -z "${KAFKA_SENDER_IP}" ] && SEND_KAFKA="NO"
+
+# check irc
+[ -z "${IRC_NETWORK}" ] && SEND_IRC="NO"
+
+# check fleep
+[ -z "${FLEEP_SERVER}" -o -z "${FLEEP_SENDER}" ] && SEND_FLEEP="NO"
+
+# check pagerduty.com
+# if we need pd-send, check for the pd-send command
+# https://www.pagerduty.com/docs/guides/agent-install-guide/
+if [ "${SEND_PD}" = "YES" ]
+    then
+    pd_send="$(which pd-send 2>/dev/null || command -v pd-send 2>/dev/null)"
+    if [ -z "${pd_send}" ]
+        then
+        error "Cannot find pd-send command in the system path. Disabling pagerduty.com notifications."
+        SEND_PD="NO"
+    fi
+fi
+
+# if we need curl, check for the curl command
+if [ \( \
+           "${SEND_PUSHOVER}"    = "YES" \
+        -o "${SEND_SLACK}"       = "YES" \
+        -o "${SEND_ROCKETCHAT}"  = "YES" \
+        -o "${SEND_ALERTA}"      = "YES" \
+        -o "${SEND_FLOCK}"       = "YES" \
+        -o "${SEND_DISCORD}"     = "YES" \
+        -o "${SEND_HIPCHAT}"     = "YES" \
+        -o "${SEND_TWILIO}"      = "YES" \
+        -o "${SEND_MESSAGEBIRD}" = "YES" \
+        -o "${SEND_KAVENEGAR}"   = "YES" \
+        -o "${SEND_TELEGRAM}"    = "YES" \
+        -o "${SEND_PUSHBULLET}"  = "YES" \
+        -o "${SEND_KAFKA}"       = "YES" \
+        -o "${SEND_FLEEP}"       = "YES" \
+        -o "${SEND_CUSTOM}"      = "YES" \
+        -o "${SEND_MSTEAM}"        = "YES" \
+    \) -a -z "${curl}" ]
+    then
+    curl="$(which curl 2>/dev/null || command -v curl 2>/dev/null)"
+    if [ -z "${curl}" ]
+        then
+        error "Cannot find curl command in the system path. Disabling all curl based notifications."
+        SEND_PUSHOVER="NO"
+        SEND_PUSHBULLET="NO"
+        SEND_TELEGRAM="NO"
+        SEND_SLACK="NO"
+        SEND_MSTEAM="NO"
+        SEND_ROCKETCHAT="NO"
+        SEND_ALERTA="NO"
+        SEND_FLOCK="NO"
+        SEND_DISCORD="NO"
+        SEND_TWILIO="NO"
+        SEND_HIPCHAT="NO"
+        SEND_MESSAGEBIRD="NO"
+        SEND_KAVENEGAR="NO"
+        SEND_KAFKA="NO"
+        SEND_FLEEP="NO"
+        SEND_CUSTOM="NO"
+    fi
+fi
+
+# if we need sendmail, check for the sendmail command
+if [ "${SEND_EMAIL}" = "YES" -a -z "${sendmail}" ]
+    then
+    sendmail="$(which sendmail 2>/dev/null || command -v sendmail 2>/dev/null)"
+    if [ -z "${sendmail}" ]
+        then
+        debug "Cannot find sendmail command in the system path. Disabling email notifications."
+        SEND_EMAIL="NO"
+    fi
+fi
+
+# if we need logger, check for the logger command
+if [ "${SEND_SYSLOG}" = "YES" -a -z "${logger}" ]
+    then
+    logger="$(which logger 2>/dev/null || command -v logger 2>/dev/null)"
+    if [ -z "${logger}" ]
+        then
+        debug "Cannot find logger command in the system path. Disabling syslog notifications."
+        SEND_SYSLOG="NO"
+    fi
+fi
+
+# if we need aws, check for the aws command
+if [ "${SEND_AWSSNS}" = "YES" -a -z "${aws}" ]
+    then
+    aws="$(which aws 2>/dev/null || command -v aws 2>/dev/null)"
+    if [ -z "${aws}" ]
+        then
+        debug "Cannot find aws command in the system path.  Disabling Amazon SNS notifications."
+        SEND_AWSSNS="NO"
+    fi
+fi
+
+# check that we have at least a method enabled
+if [   "${SEND_EMAIL}"          != "YES" \
+    -a "${SEND_PUSHOVER}"       != "YES" \
+    -a "${SEND_TELEGRAM}"       != "YES" \
+    -a "${SEND_SLACK}"          != "YES" \
+    -a "${SEND_ROCKETCHAT}"     != "YES" \
+    -a "${SEND_ALERTA}"         != "YES" \
+    -a "${SEND_FLOCK}"          != "YES" \
+    -a "${SEND_DISCORD}"        != "YES" \
+    -a "${SEND_TWILIO}"         != "YES" \
+    -a "${SEND_HIPCHAT}"        != "YES" \
+    -a "${SEND_MESSAGEBIRD}"    != "YES" \
+    -a "${SEND_KAVENEGAR}"      != "YES" \
+    -a "${SEND_PUSHBULLET}"     != "YES" \
+    -a "${SEND_KAFKA}"          != "YES" \
+    -a "${SEND_PD}"             != "YES" \
+    -a "${SEND_FLEEP}"          != "YES" \
+    -a "${SEND_CUSTOM}"         != "YES" \
+    -a "${SEND_IRC}"            != "YES" \
+    -a "${SEND_AWSSNS}"         != "YES" \
+    -a "${SEND_SYSLOG}"         != "YES" \
+    -a "${SEND_MSTEAM}"         != "YES" \
+    ]
+    then
+    fatal "All notification methods are disabled. Not sending notification for host '${host}', chart '${chart}' to '${roles}' for '${name}' = '${value}' for status '${status}'."
+fi
+
+# -----------------------------------------------------------------------------
+# get the date the alarm happened
+
+date=$(date --date=@${when} "${date_format}" 2>/dev/null)
+[ -z "${date}" ] && date=$(date "${date_format}" 2>/dev/null)
+[ -z "${date}" ] && date=$(date --date=@${when} 2>/dev/null)
+[ -z "${date}" ] && date=$(date 2>/dev/null)
+
+# ----------------------------------------------------------------------------
+# prepare some extra headers if we've been asked to thread e-mails
+if [ "${SEND_EMAIL}" == "YES" -a "${EMAIL_THREADING}" == "YES" ] ; then
+    email_thread_headers="In-Reply-To: <${chart}-${name}@${host}>\nReferences: <${chart}-${name}@${host}>"
+else
+    email_thread_headers=
+fi
+
+# -----------------------------------------------------------------------------
+# function to URL encode a string
+
+urlencode() {
+    local string="${1}" strlen encoded pos c o
+
+    strlen=${#string}
+    for (( pos=0 ; pos<strlen ; pos++ ))
+    do
+        c=${string:${pos}:1}
+        case "${c}" in
+            [-_.~a-zA-Z0-9])
+                o="${c}"
+                ;;
+
+            *)
+                printf -v o '%%%02x' "'${c}"
+                ;;
+        esac
+        encoded+="${o}"
+    done
+
+    REPLY="${encoded}"
+    echo "${REPLY}"
+}
+
+# -----------------------------------------------------------------------------
+# function to convert a duration in seconds, to a human readable duration
+# using DAYS, MINUTES, SECONDS
+
+duration4human() {
+    local s="${1}" d=0 h=0 m=0 ds="day" hs="hour" ms="minute" ss="second" ret
+    d=$(( s / 86400 ))
+    s=$(( s - (d * 86400) ))
+    h=$(( s / 3600 ))
+    s=$(( s - (h * 3600) ))
+    m=$(( s / 60 ))
+    s=$(( s - (m * 60) ))
+
+    if [ ${d} -gt 0 ]
+    then
+        [ ${m} -ge 30 ] && h=$(( h + 1 ))
+        [ ${d} -gt 1 ] && ds="days"
+        [ ${h} -gt 1 ] && hs="hours"
+        if [ ${h} -gt 0 ]
+        then
+            ret="${d} ${ds} and ${h} ${hs}"
+        else
+            ret="${d} ${ds}"
+        fi
+    elif [ ${h} -gt 0 ]
+    then
+        [ ${s} -ge 30 ] && m=$(( m + 1 ))
+        [ ${h} -gt 1 ] && hs="hours"
+        [ ${m} -gt 1 ] && ms="minutes"
+        if [ ${m} -gt 0 ]
+        then
+            ret="${h} ${hs} and ${m} ${ms}"
+        else
+            ret="${h} ${hs}"
+        fi
+    elif [ ${m} -gt 0 ]
+    then
+        [ ${m} -gt 1 ] && ms="minutes"
+        [ ${s} -gt 1 ] && ss="seconds"
+        if [ ${s} -gt 0 ]
+        then
+            ret="${m} ${ms} and ${s} ${ss}"
+        else
+            ret="${m} ${ms}"
+        fi
+    else
+        [ ${s} -gt 1 ] && ss="seconds"
+        ret="${s} ${ss}"
+    fi
+
+    REPLY="${ret}"
+    echo "${REPLY}"
+}
+
+# -----------------------------------------------------------------------------
+# email sender
+
+send_email() {
+    local ret= opts=() sender_email="${EMAIL_SENDER}" sender_name=
+    if [ "${SEND_EMAIL}" = "YES" ]
+        then
+
+        if [ ! -z "${EMAIL_SENDER}" ]
+            then
+            if [[ "${EMAIL_SENDER}" =~ ^\".*\"\ \<.*\>$ ]]
+                then
+                # the name includes double quotes
+                sender_email="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1)"
+                sender_name="$(echo "${EMAIL_SENDER}" | cut -d '"' -f 2)"
+            elif [[ "${EMAIL_SENDER}" =~ ^\'.*\'\ \<.*\>$ ]]
+                then
+                # the name includes single quotes
+                sender_email="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1)"
+                sender_name="$(echo "${EMAIL_SENDER}" | cut -d "'" -f 2)"
+            elif [[ "${EMAIL_SENDER}" =~ ^.*\ \<.*\>$ ]]
+                then
+                # the name does not have any quotes
+                sender_email="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1)"
+                sender_name="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 1)"
+            fi
+        fi
+
+        [ ! -z "${sender_email}" ] && opts+=(-f "${sender_email}")
+        [ ! -z "${sender_name}" ]  && opts+=(-F "${sender_name}")
+
+        if [ "${debug}" = "1" ]
+            then
+            echo >&2 "--- BEGIN sendmail command ---"
+            printf >&2 "%q " "${sendmail}" -t "${opts[@]}"
+            echo >&2
+            echo >&2 "--- END sendmail command ---"
+        fi
+
+        "${sendmail}" -t "${opts[@]}"
+        ret=$?
+
+        if [ ${ret} -eq 0 ]
+        then
+            info "sent email notification for: ${host} ${chart}.${name} is ${status} to '${to_email}'"
+            return 0
+        else
+            error "failed to send email notification for: ${host} ${chart}.${name} is ${status} to '${to_email}' with error code ${ret}."
+            return 1
+        fi
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# pushover sender
+
+send_pushover() {
+    local apptoken="${1}" usertokens="${2}" when="${3}" url="${4}" status="${5}" title="${6}" message="${7}" httpcode sent=0 user priority
+
+    if [ "${SEND_PUSHOVER}" = "YES" -a ! -z "${apptoken}" -a ! -z "${usertokens}" -a ! -z "${title}" -a ! -z "${message}" ]
+        then
+
+        # https://pushover.net/api
+        priority=-2
+        case "${status}" in
+            CLEAR) priority=-1;;   # low priority: no sound or vibration
+            WARNING) priority=0;;  # normal priority: respect quiet hours
+            CRITICAL) priority=1;; # high priority: bypass quiet hours
+            *) priority=-2;;       # lowest priority: no notification at all
+        esac
+
+        for user in ${usertokens}
+        do
+            httpcode=$(docurl \
+                --form-string "token=${apptoken}" \
+                --form-string "user=${user}" \
+                --form-string "html=1" \
+                --form-string "title=${title}" \
+                --form-string "message=${message}" \
+                --form-string "timestamp=${when}" \
+                --form-string "url=${url}" \
+                --form-string "url_title=Open netdata dashboard to view the alarm" \
+                --form-string "priority=${priority}" \
+                https://api.pushover.net/1/messages.json)
+
+            if [ "${httpcode}" = "200" ]
+            then
+                info "sent pushover notification for: ${host} ${chart}.${name} is ${status} to '${user}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send pushover notification for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# pushbullet sender
+
+send_pushbullet() {
+    local userapikey="${1}" source_device="${2}" recipients="${3}" url="${4}" title="${5}" message="${6}" httpcode sent=0 user
+    if [ "${SEND_PUSHBULLET}" = "YES" -a ! -z "${userapikey}" -a ! -z "${recipients}" -a ! -z "${message}" -a ! -z "${title}" ]
+        then
+        #https://docs.pushbullet.com/#create-push
+        for user in ${recipients}
+        do
+            httpcode=$(docurl \
+              --header 'Access-Token: '${userapikey}'' \
+              --header 'Content-Type: application/json' \
+              --data-binary  @<(cat <<EOF
+                              {"title": "${title}",
+                              "type": "link",
+                              "email": "${user}",
+                              "body": "$( echo -n ${message})",
+                              "url": "${url}",
+                              "source_device_iden": "${source_device}"}
+EOF
+               ) "https://api.pushbullet.com/v2/pushes" -X POST)
+
+            if [ "${httpcode}" = "200" ]
+            then
+                info "sent pushbullet notification for: ${host} ${chart}.${name} is ${status} to '${user}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send pushbullet notification for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# kafka sender
+
+send_kafka() {
+    local httpcode sent=0 
+    if [ "${SEND_KAFKA}" = "YES" ]
+        then
+            httpcode=$(docurl -X POST \
+                --data "{host_ip:\"${KAFKA_SENDER_IP}\",when:${when},name:\"${name}\",chart:\"${chart}\",family:\"${family}\",status:\"${status}\",old_status:\"${old_status}\",value:${value},old_value:${old_value},duration:${duration},non_clear_duration:${non_clear_duration},units:\"${units}\",info:\"${info}\"}" \
+                "${KAFKA_URL}")
+
+            if [ "${httpcode}" = "204" ]
+            then
+                info "sent kafka data for: ${host} ${chart}.${name} is ${status} and ip '${KAFKA_SENDER_IP}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send kafka data for: ${host} ${chart}.${name} is ${status} and ip '${KAFKA_SENDER_IP}' with HTTP error code ${httpcode}."
+            fi
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# pagerduty.com sender
+
+send_pd() {
+    local recipients="${1}" sent=0
+    unset t
+    case ${status} in
+        CLEAR)    t='resolve';;
+        WARNING)  t='trigger';;
+        CRITICAL) t='trigger';;
+    esac
+
+    if [ ${SEND_PD} = "YES" -a ! -z "${t}" ]
+        then
+        for PD_SERVICE_KEY in ${recipients}
+        do
+            d="${status} ${name} = ${value_string} - ${host}, ${family}"
+            ${pd_send} -k ${PD_SERVICE_KEY} \
+                       -t ${t} \
+                       -d "${d}" \
+                       -i ${host}:${chart}:${name} \
+                       -f 'info'="${info}" \
+                       -f 'value_w_units'="${value_string}" \
+                       -f 'when'="${when}" \
+                       -f 'duration'="${duration}" \
+                       -f 'roles'="${roles}" \
+                       -f 'host'="${host}" \
+                       -f 'unique_id'="${unique_id}" \
+                       -f 'alarm_id'="${alarm_id}" \
+                       -f 'event_id'="${event_id}" \
+                       -f 'name'="${name}" \
+                       -f 'chart'="${chart}" \
+                       -f 'family'="${family}" \
+                       -f 'status'="${status}" \
+                       -f 'old_status'="${old_status}" \
+                       -f 'value'="${value}" \
+                       -f 'old_value'="${old_value}" \
+                       -f 'src'="${src}" \
+                       -f 'non_clear_duration'="${non_clear_duration}" \
+                       -f 'units'="${units}"
+            retval=$?
+            if [ ${retval} -eq 0 ]
+                then
+                    info "sent pagerduty.com notification for host ${host} ${chart}.${name} using service key ${PD_SERVICE_KEY::-26}....: ${d}"
+                    sent=$((sent + 1))
+                else
+                    error "failed to send pagerduty.com notification for ${host} ${chart}.${name} using service key ${PD_SERVICE_KEY::-26}.... (error code ${retval}): ${d}"
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# twilio sender
+
+send_twilio() {
+    local accountsid="${1}" accounttoken="${2}" twilionumber="${3}" recipients="${4}"  title="${5}" message="${6}" httpcode sent=0 user
+    if [ "${SEND_TWILIO}" = "YES" -a ! -z "${accountsid}" -a ! -z "${accounttoken}" -a ! -z "${twilionumber}" -a ! -z "${recipients}" -a ! -z "${message}" -a ! -z "${title}" ]
+        then
+        #https://www.twilio.com/packages/labs/code/bash/twilio-sms
+        for user in ${recipients}
+        do
+            httpcode=$(docurl -X POST \
+                --data-urlencode "From=${twilionumber}" \
+                --data-urlencode "To=${user}" \
+                --data-urlencode "Body=${title} ${message}" \
+                -u "${accountsid}:${accounttoken}" \
+                "https://api.twilio.com/2010-04-01/Accounts/${accountsid}/Messages.json")
+
+            if [ "${httpcode}" = "201" ]
+            then
+                info "sent Twilio SMS for: ${host} ${chart}.${name} is ${status} to '${user}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send Twilio SMS for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+
+# -----------------------------------------------------------------------------
+# hipchat sender
+
+send_hipchat() {
+    local authtoken="${1}" recipients="${2}" message="${3}" httpcode sent=0 room color sender msg_format notify
+
+    # remove <small></small> from the message
+    message="${message//<small>/}"
+    message="${message//<\/small>/}"
+
+    if [ "${SEND_HIPCHAT}" = "YES" -a ! -z "${HIPCHAT_SERVER}" -a ! -z "${authtoken}" -a ! -z "${recipients}" -a ! -z "${message}" ]
+    then
+        # A label to be shown in addition to the sender's name
+        # Valid length range: 0 - 64. 
+        sender="netdata"
+
+        # Valid values: html, text.
+        # Defaults to 'html'.
+        msg_format="html"
+
+        # Background color for message. Valid values: yellow, green, red, purple, gray, random. Defaults to 'yellow'.
+        case "${status}" in
+            WARNING)  color="yellow" ;;
+            CRITICAL) color="red" ;;
+            CLEAR)    color="green" ;;
+            *)        color="gray" ;;
+        esac
+
+        # Whether this message should trigger a user notification (change the tab color, play a sound, notify mobile phones, etc).
+        # Each recipient's notification preferences are taken into account.
+        # Defaults to false.
+        notify="true"
+
+        for room in ${recipients}
+        do
+            httpcode=$(docurl -X POST \
+                    -H "Content-type: application/json" \
+                    -H "Authorization: Bearer ${authtoken}" \
+                    -d "{\"color\": \"${color}\", \"from\": \"${host}\", \"message_format\": \"${msg_format}\", \"message\": \"${message}\", \"notify\": \"${notify}\"}" \
+                    "https://${HIPCHAT_SERVER}/v2/room/${room}/notification")
+ 
+            if [ "${httpcode}" = "204" ]
+            then
+                info "sent HipChat notification for: ${host} ${chart}.${name} is ${status} to '${room}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send HipChat notification for: ${host} ${chart}.${name} is ${status} to '${room}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+
+# -----------------------------------------------------------------------------
+# messagebird sender
+
+send_messagebird() {
+    local accesskey="${1}" messagebirdnumber="${2}" recipients="${3}"  title="${4}" message="${5}" httpcode sent=0 user
+    if [ "${SEND_MESSAGEBIRD}" = "YES" -a ! -z "${accesskey}" -a ! -z "${messagebirdnumber}" -a ! -z "${recipients}" -a ! -z "${message}" -a ! -z "${title}" ]
+        then
+        #https://developers.messagebird.com/docs/messaging
+        for user in ${recipients}
+        do
+            httpcode=$(docurl -X POST \
+                --data-urlencode "originator=${messagebirdnumber}" \
+                --data-urlencode "recipients=${user}" \
+                --data-urlencode "body=${title} ${message}" \
+		        --data-urlencode "datacoding=auto" \
+                -H "Authorization: AccessKey ${accesskey}" \
+                "https://rest.messagebird.com/messages")
+
+            if [ "${httpcode}" = "201" ]
+            then
+                info "sent Messagebird SMS for: ${host} ${chart}.${name} is ${status} to '${user}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send Messagebird SMS for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# kavenegar sender
+
+send_kavenegar() {
+    local API_KEY="${1}" kavenegarsender="${2}" recipients="${3}"  title="${4}" message="${5}" httpcode sent=0 user
+    if [ "${SEND_KAVENEGAR}" = "YES" -a ! -z "${API_KEY}" -a ! -z "${kavenegarsender}" -a ! -z "${recipients}" -a ! -z "${message}" -a ! -z "${title}" ]
+        then
+        # http://api.kavenegar.com/v1/{API-KEY}/sms/send.json
+        for user in ${recipients}
+        do
+            httpcode=$(docurl -X POST http://api.kavenegar.com/v1/${API_KEY}/sms/send.json \
+                --data-urlencode "sender=${kavenegarsender}" \
+                --data-urlencode "receptor=${user}" \
+                --data-urlencode "message=${title} ${message}")
+
+            if [ "${httpcode}" = "201" ]
+            then
+                info "sent Kavenegar SMS for: ${host} ${chart}.${name} is ${status} to '${user}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send Kavenegar SMS for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# telegram sender
+
+send_telegram() {
+    local bottoken="${1}" chatids="${2}" message="${3}" httpcode sent=0 chatid emoji disableNotification=""
+
+    if [ "${status}" = "CLEAR" ]; then disableNotification="--data-urlencode disable_notification=true"; fi
+    
+    case "${status}" in
+        WARNING)  emoji="⚠️" ;;
+        CRITICAL) emoji="🔴" ;;
+        CLEAR)    emoji="✅" ;;
+        *)        emoji="⚪️" ;;
+    esac
+
+    if [ "${SEND_TELEGRAM}" = "YES" -a ! -z "${bottoken}" -a ! -z "${chatids}" -a ! -z "${message}" ];
+    then
+        for chatid in ${chatids}
+        do
+            # https://core.telegram.org/bots/api#sendmessage
+            httpcode=$(docurl ${disableNotification} \
+                --data-urlencode "parse_mode=HTML" \
+                --data-urlencode "disable_web_page_preview=true" \
+                --data-urlencode "text=${emoji} ${message}" \
+                "https://api.telegram.org/bot${bottoken}/sendMessage?chat_id=${chatid}")
+
+            if [ "${httpcode}" = "200" ]
+            then
+                info "sent telegram notification for: ${host} ${chart}.${name} is ${status} to '${chatid}'"
+                sent=$((sent + 1))
+            elif [ "${httpcode}" = "401" ]
+            then
+                error "failed to send telegram notification for: ${host} ${chart}.${name} is ${status} to '${chatid}': Wrong bot token."
+            else
+                error "failed to send telegram notification for: ${host} ${chart}.${name} is ${status} to '${chatid}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# Microsoft Team sender
+
+send_msteam() {
+
+    local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+    [ "${SEND_MSTEAM}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  icon="${MSTEAM_ICON_WARNING}" && color="${MSTEAM_COLOR_WARNING}";;
+        CRITICAL) icon="${MSTEAM_ICON_CRITICAL}" && color="${MSTEAM_COLOR_CRITICAL}";;
+        CLEAR)    icon="${MSTEAM_ICON_CLEAR}" && color="${MSTEAM_COLOR_CLEAR}";;
+        *)        icon="${MSTEAM_ICON_DEFAULT}" && color="${MSTEAM_COLOR_DEFAULT}";;
+    esac
+
+    for channel in ${channels}
+    do
+        ## More details are available here regarding the payload syntax options : https://docs.microsoft.com/en-us/outlook/actionable-messages/message-card-reference
+        ## Online designer : https://acdesignerbeta.azurewebsites.net/
+        payload="$(cat <<EOF
+        {
+            "@context": "http://schema.org/extensions",
+            "@type": "MessageCard",
+            "themeColor": "${color}",
+            "title": "$icon Alert ${status} from netdata for ${host}",
+            "text": "${host} ${status_message}, ${chart} (_${family}_), *${alarm}*",
+            "potentialAction": [
+            {
+                "@type": "OpenUri",
+                "name": "Netdata",
+                "targets": [
+                { "os": "default", "uri": "${goto_url}" }
+                ]
+            }
+            ]
+        }
+EOF
+        )"
+
+	# Replacing in the webhook CHANNEL string by the MS Teams channel name from conf file.
+	webhook="${webhook//CHANNEL/${channel}}"
+
+	httpcode=$(docurl -H "Content-Type: application/json" -d "${payload}" "${webhook}")
+
+        if [ "${httpcode}" = "200" ]
+        then
+            info "sent Microsoft team notification for: ${host} ${chart}.${name} is ${status} to '${webhook}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send Microsoft team notification for: ${host} ${chart}.${name} is ${status} to '${webhook}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+
+# slack sender
+
+send_slack() {
+    local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+    [ "${SEND_SLACK}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  color="warning" ;;
+        CRITICAL) color="danger" ;;
+        CLEAR)    color="good" ;;
+        *)        color="#777777" ;;
+    esac
+
+    for channel in ${channels}
+    do
+        payload="$(cat <<EOF
+        {
+            "channel": "#${channel}",
+            "username": "netdata on ${host}",
+            "icon_url": "${images_base_url}/images/seo-performance-128.png",
+            "text": "${host} ${status_message}, \`${chart}\` (_${family}_), *${alarm}*",
+            "attachments": [
+                {
+                    "fallback": "${alarm} - ${chart} (${family}) - ${info}",
+                    "color": "${color}",
+                    "title": "${alarm}",
+                    "title_link": "${goto_url}",
+                    "text": "${info}",
+                    "fields": [
+                        {
+                            "title": "${chart}",
+                            "short": true
+                        },
+                        {
+                            "title": "${family}",
+                            "short": true
+                        }
+                    ],
+                    "thumb_url": "${image}",
+                    "footer": "by <${goto_url}|${this_host}>",
+                    "ts": ${when}
+                }
+            ]
+        }
+EOF
+        )"
+
+        httpcode=$(docurl -X POST --data-urlencode "payload=${payload}" "${webhook}")
+        if [ "${httpcode}" = "200" ]
+        then
+            info "sent slack notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send slack notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+
+# -----------------------------------------------------------------------------
+# rocketchat sender
+
+send_rocketchat() {
+    local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+    [ "${SEND_ROCKETCHAT}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  color="warning" ;;
+        CRITICAL) color="danger" ;;
+        CLEAR)    color="good" ;;
+        *)        color="#777777" ;;
+    esac
+
+    for channel in ${channels}
+    do
+        payload="$(cat <<EOF
+        {
+            "channel": "#${channel}",
+            "alias": "netdata on ${host}",
+            "avatar": "${images_base_url}/images/seo-performance-128.png",
+            "text": "${host} ${status_message}, \`${chart}\` (_${family}_), *${alarm}*",
+            "attachments": [
+                {
+                    "color": "${color}",
+                    "title": "${alarm}",
+                    "title_link": "${goto_url}",
+                    "text": "${info}",
+                    "fields": [
+                        {
+                            "title": "${chart}",
+                            "short": true,
+                            "value": "chart"
+                        },
+                        {
+                            "title": "${family}",
+                            "short": true,
+                            "value": "family"
+                        }
+                    ],
+                    "thumb_url": "${image}",
+                    "ts": "${when}"
+                }
+            ]
+        }
+EOF
+        )"
+
+        httpcode=$(docurl -X POST --data-urlencode "payload=${payload}" "${webhook}")
+        if [ "${httpcode}" = "200" ]
+        then
+            info "sent rocketchat notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send rocketchat notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# alerta sender
+
+send_alerta() {
+    local webhook="${1}" channels="${2}" httpcode sent=0 channel severity content
+
+    [ "${SEND_ALERTA}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  severity="warning" ;;
+        CRITICAL) severity="critical" ;;
+        CLEAR)    severity="cleared" ;;
+        *)        severity="unknown" ;;
+    esac
+
+    info=$( echo -n ${info})
+
+    # the "event" property must be unique and repetible between states to let alerta do automatic correlation using severity value
+    for channel in ${channels}
+    do
+        content="{"
+        content="$content \"environment\": \"${channel}\","
+        content="$content \"service\": [\"${host}\"],"
+        content="$content \"resource\": \"${host}\","
+        content="$content \"event\": \"${name}.${chart} (${family})\","
+        content="$content \"severity\": \"${severity}\","
+        content="$content \"value\": \"${alarm}\","
+        content="$content \"text\": \"${info}\""
+        content="$content }"
+
+
+        httpcode=$(docurl -X POST "${webhook}/alert" -H "Content-Type: application/json" -H "Authorization: Key $ALERTA_API_KEY" -d "$content" )
+
+        if [[ "${httpcode}" = "200" || "${httpcode}" = "201" ]]
+        then
+            info "sent alerta notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send alerta notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# flock sender
+
+send_flock() {
+    local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+    [ "${SEND_FLOCK}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  color="warning" ;;
+        CRITICAL) color="danger" ;;
+        CLEAR)    color="good" ;;
+        *)        color="#777777" ;;
+    esac
+
+    for channel in ${channels}
+    do
+        httpcode=$(docurl -X POST "${webhook}" -H "Content-Type: application/json" -d "{
+            \"sendAs\": {
+                \"name\" : \"netdata on ${host}\",
+                \"profileImage\" : \"${images_base_url}/images/seo-performance-128.png\"
+            },
+            \"text\": \"${host} *${status_message}*\",
+            \"timestamp\": \"${when}\",
+            \"attachments\": [
+                {
+                    \"description\": \"${chart} (${family}) - ${info}\",
+                    \"color\": \"${color}\",
+                    \"title\": \"${alarm}\",
+                    \"url\": \"${goto_url}\",
+                    \"text\": \"${info}\",
+                    \"views\": {
+                        \"image\": {
+                            \"original\": { \"src\": \"${image}\", \"width\": 400, \"height\": 400 },
+                            \"thumbnail\": { \"src\": \"${image}\", \"width\": 50, \"height\": 50 },
+                            \"filename\": \"${image}\"
+                            }
+                    }
+                }
+            ]
+        }" )
+        if [ "${httpcode}" = "200" ]
+        then
+            info "sent flock notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send flock notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# discord sender
+
+send_discord() {
+    local webhook="${1}/slack" channels="${2}" httpcode sent=0 channel color payload username
+
+    [ "${SEND_DISCORD}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  color="warning" ;;
+        CRITICAL) color="danger" ;;
+        CLEAR)    color="good" ;;
+        *)        color="#777777" ;;
+    esac
+
+    for channel in ${channels}
+    do
+        username="netdata on ${host}"
+        [ ${#username} -gt 32 ] && username="${username:0:29}..."
+
+        payload="$(cat <<EOF
+        {
+            "channel": "#${channel}",
+            "username": "${username}",
+            "text": "${host} ${status_message}, \`${chart}\` (_${family}_), *${alarm}*",
+            "icon_url": "${images_base_url}/images/seo-performance-128.png",
+            "attachments": [
+                {
+                    "color": "${color}",
+                    "title": "${alarm}",
+                    "title_link": "${goto_url}",
+                    "text": "${info}",
+                    "fields": [
+                        {
+                            "title": "${chart}",
+                            "value": "${family}"
+                        }
+                    ],
+                    "thumb_url": "${image}",
+                    "footer_icon": "${images_base_url}/images/seo-performance-128.png",
+                    "footer": "${this_host}",
+                    "ts": ${when}
+                }
+            ]
+        }
+EOF
+        )"
+
+        httpcode=$(docurl -X POST --data-urlencode "payload=${payload}" "${webhook}")
+        if [ "${httpcode}" = "200" ]
+        then
+            info "sent discord notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send discord notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# fleep sender
+
+send_fleep() {
+    local httpcode sent=0 webhooks="${1}" data message
+    if [ "${SEND_FLEEP}" = "YES" ] ; then
+            message="${host} ${status_message}, \`${chart}\` (${family}), *${alarm}*\\n${info}"
+
+            for hook in "${webhooks}" ; do
+                data="{ "
+                data="${data} 'message': '${message}', "
+                data="${data} 'user': '${FLEEP_SENDER}' "
+                data="${data} }"
+
+                httpcode=$(docurl -X POST --data "${data}" "https://fleep.io/hook/${hook}")
+
+                if [ "${httpcode}" = "200" ] ; then
+                    info "sent fleep data for: ${host} ${chart}.${name} is ${status} and user '${FLEEP_SENDER}'"
+                    sent=$((sent + 1))
+                else
+                    error "failed to send fleep data for: ${host} ${chart}.${name} is ${status} and user '${FLEEP_SENDER}' with HTTP error code ${httpcode}."
+                fi
+            done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# irc sender
+
+send_irc() {
+    local NICKNAME="${1}" REALNAME="${2}" CHANNELS="${3}" NETWORK="${4}" SERVERNAME="${5}" MESSAGE="${6}" sent=0 channel color send_alarm reply_codes error
+    
+    if [ "${SEND_IRC}" = "YES" -a ! -z "${NICKNAME}" -a ! -z "${REALNAME}" -a ! -z "${CHANNELS}" -a ! -z "${NETWORK}" -a ! -z "${SERVERNAME}" ]
+    then
+        case "${status}" in
+            WARNING)  color="warning" ;;
+            CRITICAL) color="danger" ;;
+            CLEAR)    color="good" ;;
+            *)        color="#777777" ;;
+        esac
+
+        for CHANNEL in ${CHANNELS}
+        do
+            error=0
+            send_alarm=$(echo -e "USER ${NICKNAME} guest ${REALNAME} ${SERVERNAME}\nNICK ${NICKNAME}\nJOIN ${CHANNEL}\nPRIVMSG ${CHANNEL} :${MESSAGE}\nQUIT\n" \ | nc ${NETWORK} 6667)
+            reply_codes=$(echo ${send_alarm} | cut -d ' ' -f 2 | grep -o '[0-9]*')
+            for code in ${reply_codes}
+            do
+                [ "${code}" -ge 400 -a "${code}" -le 599 ] && error=1 && break
+            done
+
+            if [ "${error}" -eq 0 ]
+            then
+                info "sent irc notification for: ${host} ${chart}.${name} is ${status} to '${CHANNEL}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send irc notification for: ${host} ${chart}.${name} is ${status} to '${CHANNEL}', with error code ${code}." 
+            fi
+        done
+    fi
+    
+    [ ${sent} -gt 0 ] && return 0
+    
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# Amazon SNS sender
+
+send_awssns() {
+    local targets="${1}" message='' sent=0 region=''
+    local default_format="${status} on ${host} at ${date}: ${chart} ${value_string}"
+
+    [ "${SEND_AWSSNS}" = "YES" ] || return 1
+
+    message=${AWSSNS_MESSAGE_FORMAT:-${default_format}}
+
+    for target in ${targets} ; do
+        # Extract the region from the target ARN.  We need to explicitly specify the region so that it matches up correctly.
+        region="$(echo ${target} | cut -f 4 -d ':')"
+        ${aws} sns publish --region "${region}" --subject "${host} ${status_message} - ${name//_/ } - ${chart}" --message "${message}" --target-arn ${target} &>/dev/null
+        if [ $? = 0 ]; then
+            info "sent Amazon SNS notification for: ${host} ${chart}.${name} is ${status} to '${target}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send Amazon SNS notification for: ${host} ${chart}.${name} is ${status} to '${target}'" 
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# syslog sender
+
+send_syslog() {
+    local facility=${SYSLOG_FACILITY:-"local6"} level='info' targets="${1}"
+    local priority='' message='' host='' port='' prefix=''
+    local temp1='' temp2=''
+
+    [ "${SEND_SYSLOG}" = "YES" ] || return 1
+
+    if [ "${status}" = "CRITICAL" ] ; then
+        level='crit'
+    elif [ "${status}" = "WARNING" ] ; then
+        level='warning'
+    fi
+
+    for target in ${targets} ; do
+        priority="${facility}.${level}"
+        message=''
+        host=''
+        port=''
+        prefix=''
+        temp1=''
+        temp2=''
+
+        prefix=$(echo ${target} | cut -d '/' -f 2)
+        temp1=$(echo ${target} | cut -d '/' -f 1)
+
+        if [ ${prefix} != ${temp1} ] ; then
+            if (echo ${temp1} | grep -q '@' ) ; then
+                temp2=$(echo ${temp1} | cut -d '@' -f 1)
+                host=$(echo ${temp1} | cut -d '@' -f 2)
+
+                if [ ${temp2} != ${host} ] ; then
+                    priority=${temp2}
+                fi
+
+                port=$(echo ${host} | rev | cut -d ':' -f 1 | rev)
+
+                if ( echo ${host} | grep -E -q '\[.*\]' ) ; then
+                    if ( echo ${port} | grep -q ']' ) ; then
+                        port=''
+                    else
+                        host=$(echo ${host} | rev | cut -d ':' -f 2- | rev)
+                    fi
+                else
+                    if [ ${port} = ${host} ] ; then
+                        port=''
+                    else
+                        host=$(echo ${host} | cut -d ':' -f 1)
+                    fi
+                fi
+            else
+                priority=${temp1}
+            fi
+        fi
+
+        message="${prefix} ${status} on ${host} at ${date}: ${chart} ${value_string}"
+
+        if [ ${host} ] ; then
+            logger_options="${logger_options} -n ${host}"
+            if [ ${port} ] ; then
+                logger_options="${logger_options} -P ${port}"
+            fi
+        fi
+
+        ${logger} -p ${priority} ${logger_options} "${message}"
+    done
+
+    return $?
+}
+
+
+# -----------------------------------------------------------------------------
+# prepare the content of the notification
+
+# the url to send the user on click
+urlencode "${host}" >/dev/null; url_host="${REPLY}"
+urlencode "${chart}" >/dev/null; url_chart="${REPLY}"
+urlencode "${family}" >/dev/null; url_family="${REPLY}"
+urlencode "${name}" >/dev/null; url_name="${REPLY}"
+goto_url="${NETDATA_REGISTRY_URL}/goto-host-from-alarm.html?host=${url_host}&chart=${url_chart}&family=${url_family}&alarm=${url_name}&alarm_unique_id=${unique_id}&alarm_id=${alarm_id}&alarm_event_id=${event_id}"
+
+# the severity of the alarm
+severity="${status}"
+
+# the time the alarm was raised
+duration4human ${duration} >/dev/null; duration_txt="${REPLY}"
+duration4human ${non_clear_duration} >/dev/null; non_clear_duration_txt="${REPLY}"
+raised_for="(was ${old_status,,} for ${duration_txt})"
+
+# the key status message
+status_message="status unknown"
+
+# the color of the alarm
+color="grey"
+
+# the alarm value
+alarm="${name//_/ } = ${value_string}"
+
+# the image of the alarm
+image="${images_base_url}/images/seo-performance-128.png"
+
+# prepare the title based on status
+case "${status}" in
+	CRITICAL)
+        image="${images_base_url}/images/alert-128-red.png"
+        status_message="is critical"
+        color="#ca414b"
+        ;;
+
+    WARNING)
+        image="${images_base_url}/images/alert-128-orange.png"
+        status_message="needs attention"
+        color="#ffc107"
+		;;
+
+	CLEAR)
+        image="${images_base_url}/images/check-mark-2-128-green.png"
+    	status_message="recovered"
+		color="#77ca6d"
+		;;
+esac
+
+if [ "${status}" = "CLEAR" ]
+then
+    severity="Recovered from ${old_status}"
+    if [ ${non_clear_duration} -gt ${duration} ]
+    then
+        raised_for="(alarm was raised for ${non_clear_duration_txt})"
+    fi
+
+    # don't show the value when the status is CLEAR
+    # for certain alarms, this value might not have any meaning
+    alarm="${name//_/ } ${raised_for}"
+
+elif [ "${old_status}" = "WARNING" -a "${status}" = "CRITICAL" ]
+then
+    severity="Escalated to ${status}"
+    if [ ${non_clear_duration} -gt ${duration} ]
+    then
+        raised_for="(alarm is raised for ${non_clear_duration_txt})"
+    fi
+
+elif [ "${old_status}" = "CRITICAL" -a "${status}" = "WARNING" ]
+then
+    severity="Demoted to ${status}"
+    if [ ${non_clear_duration} -gt ${duration} ]
+    then
+        raised_for="(alarm is raised for ${non_clear_duration_txt})"
+    fi
+
+else
+    raised_for=
+fi
+
+# prepare HTML versions of elements
+info_html=
+[ ! -z "${info}" ] && info_html=" <small><br/>${info}</small>"
+
+raised_for_html=
+[ ! -z "${raised_for}" ] && raised_for_html="<br/><small>${raised_for}</small>"
+
+# -----------------------------------------------------------------------------
+# send the slack notification
+
+# slack aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_slack "${SLACK_WEBHOOK_URL}" "${to_slack}"
+SENT_SLACK=$?
+
+# -----------------------------------------------------------------------------
+# send the Microsoft notification
+
+# Microsoft team aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_msteam "${MSTEAM_WEBHOOK_URL}" "${to_msteam}"
+SENT_MSTEAM=$?
+
+# -----------------------------------------------------------------------------
+# send the rocketchat notification
+
+# rocketchat aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_rocketchat "${ROCKETCHAT_WEBHOOK_URL}" "${to_rocketchat}"
+SENT_ROCKETCHAT=$?
+
+# -----------------------------------------------------------------------------
+# send the alerta notification
+
+# alerta aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_alerta "${ALERTA_WEBHOOK_URL}" "${to_alerta}"
+SENT_ALERTA=$?
+
+# -----------------------------------------------------------------------------
+# send the flock notification
+
+# flock aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_flock "${FLOCK_WEBHOOK_URL}" "${to_flock}"
+SENT_FLOCK=$?
+
+# -----------------------------------------------------------------------------
+# send the discord notification
+
+# discord aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_discord "${DISCORD_WEBHOOK_URL}" "${to_discord}"
+SENT_DISCORD=$?
+
+# -----------------------------------------------------------------------------
+# send the pushover notification
+
+send_pushover "${PUSHOVER_APP_TOKEN}" "${to_pushover}" "${when}" "${goto_url}" "${status}" "${host} ${status_message} - ${name//_/ } - ${chart}" "
+<font color=\"${color}\"><b>${alarm}</b></font>${info_html}<br/>&nbsp;
+<small><b>${chart}</b><br/>Chart<br/>&nbsp;</small>
+<small><b>${family}</b><br/>Family<br/>&nbsp;</small>
+<small><b>${severity}</b><br/>Severity<br/>&nbsp;</small>
+<small><b>${date}${raised_for_html}</b><br/>Time<br/>&nbsp;</small>
+<a href=\"${goto_url}\">View Netdata</a><br/>&nbsp;
+<small><small>The source of this alarm is line ${src}</small></small>
+"
+
+SENT_PUSHOVER=$?
+
+# -----------------------------------------------------------------------------
+# send the pushbullet notification
+
+send_pushbullet "${PUSHBULLET_ACCESS_TOKEN}" "${PUSHBULLET_SOURCE_DEVICE}" "${to_pushbullet}" "${goto_url}" "${host} ${status_message} - ${name//_/ } - ${chart}" "${alarm}\n
+Severity: ${severity}\n
+Chart: ${chart}\n
+Family: ${family}\n
+$(date -d @${when})\n
+The source of this alarm is line ${src}"
+
+SENT_PUSHBULLET=$?
+
+# -----------------------------------------------------------------------------
+# send the twilio SMS
+
+send_twilio "${TWILIO_ACCOUNT_SID}" "${TWILIO_ACCOUNT_TOKEN}" "${TWILIO_NUMBER}" "${to_twilio}" "${host} ${status_message} - ${name//_/ } - ${chart}" "${alarm} 
+Severity: ${severity}
+Chart: ${chart}
+Family: ${family}
+${info}"
+
+SENT_TWILIO=$?
+
+# -----------------------------------------------------------------------------
+# send the messagebird SMS
+
+send_messagebird "${MESSAGEBIRD_ACCESS_KEY}" "${MESSAGEBIRD_NUMBER}" "${to_messagebird}" "${host} ${status_message} - ${name//_/ } - ${chart}" "${alarm} 
+Severity: ${severity}
+Chart: ${chart}
+Family: ${family}
+${info}"
+
+SENT_MESSAGEBIRD=$?
+
+
+# -----------------------------------------------------------------------------
+# send the kavenegar SMS
+
+send_kavenegar "${KAVENEGAR_API_KEY}" "${KAVENEGAR_SENDER}" "${to_kavenegar}" "${host} ${status_message} - ${name//_/ } - ${chart}" "${alarm} 
+Severity: ${severity}
+Chart: ${chart}
+Family: ${family}
+${info}"
+
+SENT_KAVENEGAR=$?
+
+
+# -----------------------------------------------------------------------------
+# send the telegram.org message
+
+# https://core.telegram.org/bots/api#formatting-options
+send_telegram "${TELEGRAM_BOT_TOKEN}" "${to_telegram}" "${host} ${status_message} - <b>${name//_/ }</b>
+${chart} (${family})
+<a href=\"${goto_url}\">${alarm}</a>
+<i>${info}</i>"
+
+SENT_TELEGRAM=$?
+
+
+# -----------------------------------------------------------------------------
+# send the kafka message
+
+send_kafka
+SENT_KAFKA=$?
+
+
+# -----------------------------------------------------------------------------
+# send the pagerduty.com message
+
+send_pd "${to_pd}"
+SENT_PD=$?
+
+# -----------------------------------------------------------------------------
+# send the fleep message
+
+send_fleep "${to_fleep}"
+SENT_FLEEP=$?
+
+# -----------------------------------------------------------------------------
+# send the irc message
+
+send_irc "${IRC_NICKNAME}" "${IRC_REALNAME}" "${to_irc}" "${IRC_NETWORK}" "${host}" "${host} ${status_message} - ${name//_/ } - ${chart} ----- ${alarm} 
+Severity: ${severity}
+Chart: ${chart}
+Family: ${family}
+${info}"
+
+SENT_IRC=$?
+
+# -----------------------------------------------------------------------------
+# send the custom message
+
+send_custom() {
+    # is it enabled?
+    [ "${SEND_CUSTOM}" != "YES" ] && return 1
+
+    # do we have any sender?
+    [ -z "${1}" ] && return 1
+
+    # call the custom_sender function
+    custom_sender "${@}"
+}
+
+send_custom "${to_custom}"
+SENT_CUSTOM=$?
+
+
+# -----------------------------------------------------------------------------
+# send hipchat message
+
+send_hipchat "${HIPCHAT_AUTH_TOKEN}" "${to_hipchat}" " \
+${host} ${status_message}<br/> \
+<b>${alarm}</b> ${info_html}<br/> \
+<b>${chart}</b> (family <b>${family}</b>)<br/> \
+<b>${date}${raised_for_html}</b><br/> \
+<a href=\\\"${goto_url}\\\">View netdata dashboard</a> \
+(source of alarm ${src}) \
+"
+
+SENT_HIPCHAT=$?
+
+
+# -----------------------------------------------------------------------------
+# send the Amazon SNS message
+
+send_awssns ${to_awssns}
+
+SENT_AWSSNS=$?
+
+
+# -----------------------------------------------------------------------------
+# send the syslog message
+
+send_syslog ${to_syslog}
+
+SENT_SYSLOG=$?
+
+
+# -----------------------------------------------------------------------------
+# send the email
+
+send_email <<EOF
+To: ${to_email}
+Subject: ${host} ${status_message} - ${name//_/ } - ${chart}
+MIME-Version: 1.0
+Content-Type: multipart/alternative; boundary="multipart-boundary"
+${email_thread_headers}
+
+This is a MIME-encoded multipart message
+
+--multipart-boundary
+Content-Type: text/plain; encoding=${EMAIL_CHARSET}
+Content-Disposition: inline
+Content-Transfer-Encoding: 8bit
+
+${host} ${status_message}
+
+${alarm} ${info}
+${raised_for}
+
+Chart   : ${chart}
+Family  : ${family}
+Severity: ${severity}
+URL     : ${goto_url}
+Source  : ${src}
+Date    : ${date}
+Notification generated on ${this_host}
+
+--multipart-boundary
+Content-Type: text/html; encoding=${EMAIL_CHARSET}
+Content-Disposition: inline
+Content-Transfer-Encoding: 8bit
+
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; box-sizing: border-box; font-size: 14px; margin: 0; padding: 0;">
+<body style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 14px; width: 100% !important; min-height: 100%; line-height: 1.6; background: #f6f6f6; margin:0; padding: 0;">
+<table>
+    <tbody>
+    <tr>
+        <td style="vertical-align: top;" valign="top"></td>
+        <td width="700" style="vertical-align: top; display: block !important; max-width: 700px !important; clear: both !important; margin: 0 auto; padding: 0;" valign="top">
+            <div style="max-width: 700px; display: block; margin: 0 auto; padding: 20px;">
+                <table width="100%" cellpadding="0" cellspacing="0" style="background: #fff; border: 1px solid #e9e9e9;">
+                    <tbody>
+                    <tr>
+                        <td bgcolor="#eee" style="padding: 5px 20px 5px 20px; background-color: #eee;">
+                            <div style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 20px; color: #777; font-weight: bold;">netdata notification</div>
+                        </td>
+                    </tr>
+                    <tr>
+                        <td bgcolor="${color}" style="font-size: 16px; vertical-align: top; font-weight: 400; text-align: center; margin: 0; padding: 10px; color: #ffffff; background: ${color} !important; border: 1px solid ${color}; border-top-color: ${color};" align="center" valign="top">
+                            <h1 style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-weight: 400; margin: 0;">${host} ${status_message}</h1>
+                        </td>
+                    </tr>
+                    <tr>
+                        <td style="vertical-align: top;" valign="top">
+                            <div style="margin: 0; padding: 20px; max-width: 700px;">
+                                <table width="100%" cellpadding="0" cellspacing="0" style="max-width:700px">
+                                    <tbody>
+                                    <tr>
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding:0 0 20px;" align="left" valign="top">
+                                            <span>${chart}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Chart</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            <span><b>${alarm}</b>${info_html}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Alarm</span>
+                                        </td>
+                                    </tr>
+                                    <tr>
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            <span>${family}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Family</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            <span>${severity}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Severity</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top"><span>${date}</span>
+                                            <span>${raised_for_html}</span> <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Time</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;">
+                                            <a href="${goto_url}" style="font-size: 14px; color: #ffffff; text-decoration: none; line-height: 1.5; font-weight: bold; text-align: center; display: inline-block; text-transform: capitalize; background: #35568d; border-width: 1px; border-style: solid; border-color: #2b4c86; margin: 0; padding: 10px 15px;" target="_blank">View Netdata</a>
+                                        </td>
+                                    </tr>
+                                    <tr style="text-align: center; margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 11px; vertical-align: top; margin: 0; padding: 10px 0 0 0; color: #666666;" align="center" valign="bottom">The source of this alarm is line <code>${src}</code><br/>(alarms are configurable, edit this file to adapt the alarm to your needs)
+                                        </td>
+                                    </tr>
+                                    <tr style="text-align: center; margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 12px; vertical-align: top; margin:0; padding: 20px 0 0 0; color: #666666; border-top: 1px solid #f0f0f0;" align="center" valign="bottom">Sent by
+                                            <a href="https://mynetdata.io/" target="_blank">netdata</a>, the real-time performance and health monitoring, on <code>${this_host}</code>.
+                                        </td>
+                                    </tr>
+                                    </tbody>
+                                </table>
+                            </div>
+                        </td>
+                    </tr>
+                    </tbody>
+                </table>
+            </div>
+        </td>
+    </tr>
+    </tbody>
+</table>
+</body>
+</html>
+--multipart-boundary--
+EOF
+
+SENT_EMAIL=$?
+
+# -----------------------------------------------------------------------------
+# let netdata know
+
+if [   ${SENT_EMAIL}        -eq 0 \
+    -o ${SENT_PUSHOVER}     -eq 0 \
+    -o ${SENT_TELEGRAM}     -eq 0 \
+    -o ${SENT_SLACK}        -eq 0 \
+    -o ${SENT_MSTEAM}       -eq 0 \
+    -o ${SENT_ROCKETCHAT}   -eq 0 \
+    -o ${SENT_ALERTA}       -eq 0 \
+    -o ${SENT_FLOCK}        -eq 0 \
+    -o ${SENT_DISCORD}      -eq 0 \
+    -o ${SENT_TWILIO}       -eq 0 \
+    -o ${SENT_HIPCHAT}      -eq 0 \
+    -o ${SENT_MESSAGEBIRD}  -eq 0 \
+    -o ${SENT_KAVENEGAR}    -eq 0 \
+    -o ${SENT_PUSHBULLET}   -eq 0 \
+    -o ${SENT_KAFKA}        -eq 0 \
+    -o ${SENT_PD}           -eq 0 \
+    -o ${SENT_FLEEP}        -eq 0 \
+    -o ${SENT_IRC}          -eq 0 \
+    -o ${SENT_AWSSNS}       -eq 0 \
+    -o ${SENT_CUSTOM}       -eq 0 \
+    -o ${SENT_SYSLOG}       -eq 0 \
+    ]
+    then
+    # we did send something
+    exit 0
+fi
+
+# we did not send anything
+exit 1
diff --git a/health/notifications/alarm-notify.sh.in b/health/notifications/alarm-notify.sh.in
new file mode 100755
index 00000000..4aef3a52
--- /dev/null
+++ b/health/notifications/alarm-notify.sh.in
@@ -0,0 +1,2378 @@
+#!/usr/bin/env bash
+
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2017 Costa Tsaousis <costa@tsaousis.gr>
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# Script to send alarm notifications for netdata
+#
+# Features:
+#  - multiple notification methods
+#  - multiple roles per alarm
+#  - multiple recipients per role
+#  - severity filtering per recipient
+#
+# Supported notification methods:
+#  - emails by @ktsaou
+#  - slack.com notifications by @ktsaou
+#  - alerta.io notifications by @kattunga
+#  - discordapp.com notifications by @lowfive
+#  - pushover.net notifications by @ktsaou
+#  - pushbullet.com push notifications by Tiago Peralta @tperalta82 #1070
+#  - telegram.org notifications by @hashworks #1002
+#  - twilio.com notifications by Levi Blaney @shadycuz #1211
+#  - kafka notifications by @ktsaou #1342
+#  - pagerduty.com notifications by Jim Cooley @jimcooley #1373
+#  - messagebird.com notifications by @tech_no_logical #1453
+#  - hipchat notifications by @ktsaou #1561
+#  - fleep notifications by @Ferroin
+#  - custom notifications by @ktsaou
+#  - syslog messages by @Ferroin
+#  - Microsoft Team notification by @tioumen
+
+# -----------------------------------------------------------------------------
+# testing notifications
+
+
+if [ \( "${1}" = "test" -o "${2}" = "test" \) -a "${#}" -le 2 ]
+then
+    if [ "${2}" = "test" ]
+    then
+        recipient="${1}"
+    else
+        recipient="${2}"
+    fi
+
+    [ -z "${recipient}" ] && recipient="sysadmin"
+
+    id=1
+    last="CLEAR"
+    test_res=0
+    for x in "WARNING" "CRITICAL"  "CLEAR"
+    do
+        echo >&2
+        echo >&2 "# SENDING TEST ${x} ALARM TO ROLE: ${recipient}"
+
+        "${0}" "${recipient}" "$(hostname)" 1 1 "${id}" "$(date +%s)" "test_alarm" "test.chart" "test.family" "${x}" "${last}" 100 90 "${0}" 1 $((0 + id)) "units" "this is a test alarm to verify notifications work" "new value" "old value"
+        if [ $? -ne 0 ]
+        then
+            echo >&2 "# FAILED"
+            test_res=1
+        else
+            echo >&2 "# OK"
+        fi
+
+        last="${x}"
+        id=$((id + 1))
+    done
+
+    exit $test_res
+fi
+
+export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
+export LC_ALL=C
+
+# -----------------------------------------------------------------------------
+
+PROGRAM_NAME="$(basename "${0}")"
+
+logdate() {
+    date "+%Y-%m-%d %H:%M:%S"
+}
+
+log() {
+    local status="${1}"
+    shift
+
+    echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}"
+
+}
+
+warning() {
+    log WARNING "${@}"
+}
+
+error() {
+    log ERROR "${@}"
+}
+
+info() {
+    log INFO "${@}"
+}
+
+fatal() {
+    log FATAL "${@}"
+    exit 1
+}
+
+debug=${NETDATA_ALARM_NOTIFY_DEBUG-0}
+debug() {
+    [ "${debug}" = "1" ] && log DEBUG "${@}"
+}
+
+docurl() {
+    if [ -z "${curl}" ]
+        then
+        error "\${curl} is unset."
+        return 1
+    fi
+
+    if [ "${debug}" = "1" ]
+        then
+        echo >&2 "--- BEGIN curl command ---"
+        printf >&2 "%q " ${curl} "${@}"
+        echo >&2
+        echo >&2 "--- END curl command ---"
+
+        local out=$(mktemp /tmp/netdata-health-alarm-notify-XXXXXXXX)
+        local code=$(${curl} ${curl_options} --write-out %{http_code} --output "${out}" --silent --show-error "${@}")
+        local ret=$?
+        echo >&2 "--- BEGIN received response ---"
+        cat >&2 "${out}"
+        echo >&2
+        echo >&2 "--- END received response ---"
+        echo >&2 "RECEIVED HTTP RESPONSE CODE: ${code}"
+        rm "${out}"
+        echo "${code}"
+        return ${ret}
+    fi
+
+    ${curl} ${curl_options} --write-out %{http_code} --output /dev/null --silent --show-error "${@}"
+    return $?
+}
+
+# -----------------------------------------------------------------------------
+# this is to be overwritten by the config file
+
+custom_sender() {
+    info "not sending custom notification for ${status} of '${host}.${chart}.${name}'"
+}
+
+
+# -----------------------------------------------------------------------------
+
+# check for BASH v4+ (required for associative arrays)
+[ $(( ${BASH_VERSINFO[0]} )) -lt 4 ] && \
+    fatal "BASH version 4 or later is required (this is ${BASH_VERSION})."
+
+# -----------------------------------------------------------------------------
+# defaults to allow running this script by hand
+
+[ -z "${NETDATA_USER_CONFIG_DIR}"  ] && NETDATA_USER_CONFIG_DIR="@configdir_POST@"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="@libconfigdir_POST@"
+[ -z "${NETDATA_CACHE_DIR}"        ] && NETDATA_CACHE_DIR="@cachedir_POST@"
+[ -z "${NETDATA_REGISTRY_URL}"     ] && NETDATA_REGISTRY_URL="https://registry.my-netdata.io"
+
+# -----------------------------------------------------------------------------
+# parse command line parameters
+
+roles="${1}"               # the roles that should be notified for this event
+host="${2}"                # the host generated this event
+unique_id="${3}"           # the unique id of this event
+alarm_id="${4}"            # the unique id of the alarm that generated this event
+event_id="${5}"            # the incremental id of the event, for this alarm id
+when="${6}"                # the timestamp this event occurred
+name="${7}"                # the name of the alarm, as given in netdata health.d entries
+chart="${8}"               # the name of the chart (type.id)
+family="${9}"              # the family of the chart
+status="${10}"             # the current status : REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
+old_status="${11}"         # the previous status: REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
+value="${12}"              # the current value of the alarm
+old_value="${13}"          # the previous value of the alarm
+src="${14}"                # the line number and file the alarm has been configured
+duration="${15}"           # the duration in seconds of the previous alarm state
+non_clear_duration="${16}" # the total duration in seconds this is/was non-clear
+units="${17}"              # the units of the value
+info="${18}"               # a short description of the alarm
+value_string="${19}"       # friendly value (with units)
+old_value_string="${20}"   # friendly old value (with units)
+
+# -----------------------------------------------------------------------------
+# find a suitable hostname to use, if netdata did not supply a hostname
+
+this_host=$(hostname -s 2>/dev/null)
+[ -z "${host}" ] && host="${this_host}"
+
+# -----------------------------------------------------------------------------
+# screen statuses we don't need to send a notification
+
+# don't do anything if this is not WARNING, CRITICAL or CLEAR
+if [ "${status}" != "WARNING" -a "${status}" != "CRITICAL" -a "${status}" != "CLEAR" ]
+then
+    info "not sending notification for ${status} of '${host}.${chart}.${name}'"
+    exit 1
+fi
+
+# don't do anything if this is CLEAR, but it was not WARNING or CRITICAL
+if [ "${old_status}" != "WARNING" -a "${old_status}" != "CRITICAL" -a "${status}" = "CLEAR" ]
+then
+    info "not sending notification for ${status} of '${host}.${chart}.${name}' (last status was ${old_status})"
+    exit 1
+fi
+
+# -----------------------------------------------------------------------------
+# load configuration
+
+# By default fetch images from the global public registry.
+# This is required by default, since all notification methods need to download
+# images via the Internet, and private registries might not be reachable.
+# This can be overwritten at the configuration file.
+images_base_url="https://registry.my-netdata.io"
+
+# curl options to use
+curl_options=""
+
+# needed commands
+# if empty they will be searched in the system path
+curl=
+sendmail=
+
+# enable / disable features
+SEND_SLACK="YES"
+SEND_MSTEAM="YES"
+SEND_ALERTA="YES"
+SEND_FLOCK="YES"
+SEND_DISCORD="YES"
+SEND_PUSHOVER="YES"
+SEND_TWILIO="YES"
+SEND_HIPCHAT="YES"
+SEND_MESSAGEBIRD="YES"
+SEND_KAVENEGAR="YES"
+SEND_TELEGRAM="YES"
+SEND_EMAIL="YES"
+SEND_PUSHBULLET="YES"
+SEND_KAFKA="YES"
+SEND_PD="YES"
+SEND_FLEEP="YES"
+SEND_IRC="YES"
+SEND_AWSSNS="YES"
+SEND_SYSLOG="NO"
+SEND_CUSTOM="YES"
+
+# slack configs
+SLACK_WEBHOOK_URL=
+DEFAULT_RECIPIENT_SLACK=
+declare -A role_recipients_slack=()
+
+# Microsoft Team configs
+MSTEAM_WEBHOOK_URL=
+DEFAULT_RECIPIENT_MSTEAM=
+declare -A role_recipients_msteam=()
+
+# rocketchat configs
+ROCKETCHAT_WEBHOOK_URL=
+DEFAULT_RECIPIENT_ROCKETCHAT=
+declare -A role_recipients_rocketchat=()
+
+# alerta configs
+ALERTA_WEBHOOK_URL=
+ALERTA_API_KEY=
+DEFAULT_RECIPIENT_ALERTA=
+declare -A role_recipients_alerta=()
+
+# flock configs
+FLOCK_WEBHOOK_URL=
+DEFAULT_RECIPIENT_FLOCK=
+declare -A role_recipients_flock=()
+
+# discord configs
+DISCORD_WEBHOOK_URL=
+DEFAULT_RECIPIENT_DISCORD=
+declare -A role_recipients_discord=()
+
+# pushover configs
+PUSHOVER_APP_TOKEN=
+DEFAULT_RECIPIENT_PUSHOVER=
+declare -A role_recipients_pushover=()
+
+# pushbullet configs
+PUSHBULLET_ACCESS_TOKEN=
+PUSHBULLET_SOURCE_DEVICE=
+DEFAULT_RECIPIENT_PUSHBULLET=
+declare -A role_recipients_pushbullet=()
+
+# twilio configs
+TWILIO_ACCOUNT_SID=
+TWILIO_ACCOUNT_TOKEN=
+TWILIO_NUMBER=
+DEFAULT_RECIPIENT_TWILIO=
+declare -A role_recipients_twilio=()
+
+# hipchat configs
+HIPCHAT_SERVER=
+HIPCHAT_AUTH_TOKEN=
+DEFAULT_RECIPIENT_HIPCHAT=
+declare -A role_recipients_hipchat=()
+
+# messagebird configs
+MESSAGEBIRD_ACCESS_KEY=
+MESSAGEBIRD_NUMBER=
+DEFAULT_RECIPIENT_MESSAGEBIRD=
+declare -A role_recipients_messagebird=()
+
+# kavenegar configs
+KAVENEGAR_API_KEY=""
+KAVENEGAR_SENDER=""
+DEFAULT_RECIPIENT_KAVENEGAR=()
+declare -A role_recipients_kavenegar=""
+
+# telegram configs
+TELEGRAM_BOT_TOKEN=
+DEFAULT_RECIPIENT_TELEGRAM=
+declare -A role_recipients_telegram=()
+
+# kafka configs
+KAFKA_URL=
+KAFKA_SENDER_IP=
+
+# pagerduty.com configs
+PD_SERVICE_KEY=
+DEFAULT_RECIPIENT_PD=
+declare -A role_recipients_pd=()
+
+# fleep.io configs
+FLEEP_SENDER="${host}"
+DEFAULT_RECIPIENT_FLEEP=
+declare -A role_recipients_fleep=()
+
+# Amazon SNS configs
+DEFAULT_RECIPIENT_AWSSNS=
+AWSSNS_MESSAGE_FORMAT=
+declare -A role_recipients_awssns=()
+
+# syslog configs
+SYSLOG_FACILITY=
+declare -A role_recipients_syslog=()
+
+# custom configs
+DEFAULT_RECIPIENT_CUSTOM=
+declare -A role_recipients_custom=()
+
+# email configs
+EMAIL_SENDER=
+DEFAULT_RECIPIENT_EMAIL="root"
+EMAIL_CHARSET=$(locale charmap 2>/dev/null)
+EMAIL_THREADING=
+declare -A role_recipients_email=()
+
+# irc configs
+IRC_NICKNAME=
+IRC_REALNAME=
+DEFAULT_RECIPIENT_IRC=
+IRC_NETWORK=
+declare -A role_recipients_irc=()
+
+# load the stock and user configuration files
+# these will overwrite the variables above
+
+for CONFIG in "${NETDATA_STOCK_CONFIG_DIR}/health_alarm_notify.conf" "${NETDATA_USER_CONFIG_DIR}/health_alarm_notify.conf"
+do
+    if [ -f "${CONFIG}" ]
+        then
+        debug "Loading config file '${CONFIG}'..."
+        source "${CONFIG}"
+        [ $? -ne 0 ] && error "Failed to load config file '${CONFIG}'."
+    else
+        warning "Cannot find file '${CONFIG}'."
+    fi
+done
+
+# If we didn't autodetect the character set for e-mail and it wasn't
+# set by the user, we need to set it to a reasonable default.  UTF-8
+# should be correct for almost all modern UNIX systems.
+if [ -z ${EMAIL_CHARSET} ]
+    then
+    EMAIL_CHARSET="UTF-8"
+fi
+
+# -----------------------------------------------------------------------------
+# filter a recipient based on alarm event severity
+
+filter_recipient_by_criticality() {
+    local method="${1}" x="${2}" r s
+    shift
+
+    r="${x/|*/}" # the recipient
+    s="${x/*|/}" # the severity required for notifying this recipient
+
+    # no severity filtering for this person
+    [ "${r}" = "${s}" ] && return 0
+
+    # the severity is invalid
+    s="${s^^}"
+    if [ "${s}" != "CRITICAL" ]
+    then
+        error "SEVERITY FILTERING for ${x} VIA ${method}: invalid severity '${s,,}', only 'critical' is supported."
+        return 0
+    fi
+
+    # create the status tracking directory for this user
+    [ ! -d "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}" ] && \
+        mkdir -p "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}"
+
+    case "${status}" in
+        CRITICAL)
+            # make sure he will get future notifications for this alarm too
+            touch "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}"
+            debug "SEVERITY FILTERING for ${x} VIA ${method}: ALLOW: the alarm is CRITICAL (will now receive next status change)"
+            return 0
+            ;;
+
+        WARNING)
+            if [ -f "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}" ]
+            then
+                # we do not remove the file, so that he will get future notifications of this alarm
+                debug "SEVERITY FILTERING for ${x} VIA ${method}: ALLOW: recipient has been notified for this alarm in the past (will still receive next status change)"
+                return 0
+            fi
+            ;;
+
+        *)
+            if [ -f "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}" ]
+            then
+                # remove the file, so that he will only receive notifications for CRITICAL states for this alarm
+                rm "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}"
+                debug "SEVERITY FILTERING for ${x} VIA ${method}: ALLOW: recipient has been notified for this alarm (will only receive CRITICAL notifications from now on)"
+                return 0
+            fi
+            ;;
+    esac
+
+    debug "SEVERITY FILTERING for ${x} VIA ${method}: BLOCK: recipient should not receive this notification"
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# find the recipients' addresses per method
+
+declare -A arr_slack=()
+declare -A arr_msteam=()
+declare -A arr_rocketchat=()
+declare -A arr_alerta=()
+declare -A arr_flock=()
+declare -A arr_discord=()
+declare -A arr_pushover=()
+declare -A arr_pushbullet=()
+declare -A arr_twilio=()
+declare -A arr_hipchat=()
+declare -A arr_telegram=()
+declare -A arr_pd=()
+declare -A arr_email=()
+declare -A arr_custom=()
+declare -A arr_messagebird=()
+declare -A arr_kavenegar=()
+declare -A arr_fleep=()
+declare -A arr_irc=()
+declare -A arr_syslog=()
+declare -A arr_awssns=()
+
+# netdata may call us with multiple roles, and roles may have multiple but
+# overlapping recipients - so, here we find the unique recipients.
+for x in ${roles//,/ }
+do
+    # the roles 'silent' and 'disabled' mean:
+    # don't send a notification for this role
+    [ "${x}" = "silent" -o "${x}" = "disabled" ] && continue
+
+    # email
+    a="${role_recipients_email[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_EMAIL}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality email "${r}" && arr_email[${r/|*/}]="1"
+    done
+
+    # pushover
+    a="${role_recipients_pushover[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_PUSHOVER}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality pushover "${r}" && arr_pushover[${r/|*/}]="1"
+    done
+
+    # pushbullet
+    a="${role_recipients_pushbullet[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_PUSHBULLET}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality pushbullet "${r}" && arr_pushbullet[${r/|*/}]="1"
+    done
+
+    # twilio
+    a="${role_recipients_twilio[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_TWILIO}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality twilio "${r}" && arr_twilio[${r/|*/}]="1"
+    done
+
+    # hipchat
+    a="${role_recipients_hipchat[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_HIPCHAT}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality hipchat "${r}" && arr_hipchat[${r/|*/}]="1"
+    done
+
+    # messagebird
+    a="${role_recipients_messagebird[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_MESSAGEBIRD}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality messagebird "${r}" && arr_messagebird[${r/|*/}]="1"
+    done
+
+    # kavenegar
+    a="${role_recipients_kavenegar[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_KAVENEGAR}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality kavenegar "${r}" && arr_kavenegar[${r/|*/}]="1"
+    done
+
+    # telegram
+    a="${role_recipients_telegram[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_TELEGRAM}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality telegram "${r}" && arr_telegram[${r/|*/}]="1"
+    done
+
+    # slack
+    a="${role_recipients_slack[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_SLACK}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality slack "${r}" && arr_slack[${r/|*/}]="1"
+    done
+
+    # Microsoft Team
+    a="${role_recipients_msteam[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_MSTEAM}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality msteam "${r}" && arr_msteam[${r/|*/}]="1"
+    done
+
+    # rocketchat
+    a="${role_recipients_rocketchat[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_ROCKETCHAT}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality rocketchat "${r}" && arr_rocketchat[${r/|*/}]="1"
+    done
+
+    # alerta
+    a="${role_recipients_alerta[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_ALERTA}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality alerta "${r}" && arr_alerta[${r/|*/}]="1"
+    done
+
+    # flock
+    a="${role_recipients_flock[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_FLOCK}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality flock "${r}" && arr_flock[${r/|*/}]="1"
+    done
+
+    # discord
+    a="${role_recipients_discord[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_DISCORD}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality discord "${r}" && arr_discord[${r/|*/}]="1"
+    done
+
+    # pagerduty.com
+    a="${role_recipients_pd[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_PD}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality pd "${r}" && arr_pd[${r/|*/}]="1"
+    done
+
+    # fleep.io
+    a="${role_recipients_fleep[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_FLEEP}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality fleep "${r}" && arr_fleep[${r/|*/}]="1"
+    done
+
+    # irc
+    a="${role_recipients_irc[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_IRC}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality irc "${r}" && arr_irc[${r/|*/}]="1"
+    done
+
+    # amazon sns
+    a="${role_recipients_awssns[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_AWSSNS}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality awssns "${r}" && arr_awssns[${r/|*/}]="1"
+    done
+
+    # syslog
+    a="${role_recipients_syslog[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_SYSLOG}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality syslog "${r}" && arr_syslog[${r/|*/}]="1"
+    done
+
+    # custom
+    a="${role_recipients_custom[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_CUSTOM}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality custom "${r}" && arr_custom[${r/|*/}]="1"
+    done
+
+done
+
+# build the list of slack recipients (channels)
+to_slack="${!arr_slack[*]}"
+[ -z "${to_slack}" ] && SEND_SLACK="NO"
+
+# build the list of Microsoft team recipients (channels)
+to_msteam="${!arr_msteam[*]}"
+[ -z "${to_msteam}" ] && SEND_MSTEAM="NO"
+
+# build the list of rocketchat recipients (channels)
+to_rocketchat="${!arr_rocketchat[*]}"
+[ -z "${to_rocketchat}" ] && SEND_ROCKETCHAT="NO"
+
+# build the list of alerta recipients (channels)
+to_alerta="${!arr_alerta[*]}"
+[ -z "${to_alerta}" ] && SEND_ALERTA="NO"
+
+# build the list of flock recipients (channels)
+to_flock="${!arr_flock[*]}"
+[ -z "${to_flock}" ] && SEND_FLOCK="NO"
+
+# build the list of discord recipients (channels)
+to_discord="${!arr_discord[*]}"
+[ -z "${to_discord}" ] && SEND_DISCORD="NO"
+
+# build the list of pushover recipients (user tokens)
+to_pushover="${!arr_pushover[*]}"
+[ -z "${to_pushover}" ] && SEND_PUSHOVER="NO"
+
+# build the list of pushbulet recipients (user tokens)
+to_pushbullet="${!arr_pushbullet[*]}"
+[ -z "${to_pushbullet}" ] && SEND_PUSHBULLET="NO"
+
+# build the list of twilio recipients (phone numbers)
+to_twilio="${!arr_twilio[*]}"
+[ -z "${to_twilio}" ] && SEND_TWILIO="NO"
+
+# build the list of hipchat recipients (rooms)
+to_hipchat="${!arr_hipchat[*]}"
+[ -z "${to_hipchat}" ] && SEND_HIPCHAT="NO"
+
+# build the list of messagebird recipients (phone numbers)
+to_messagebird="${!arr_messagebird[*]}"
+[ -z "${to_messagebird}" ] && SEND_MESSAGEBIRD="NO"
+
+# build the list of kavenegar recipients (phone numbers)
+to_kavenegar="${!arr_kavenegar[*]}"
+[ -z "${to_kavenegar}" ] && SEND_KAVENEGAR="NO"
+
+# check array of telegram recipients (chat ids)
+to_telegram="${!arr_telegram[*]}"
+[ -z "${to_telegram}" ] && SEND_TELEGRAM="NO"
+
+# build the list of pagerduty recipients (service keys)
+to_pd="${!arr_pd[*]}"
+[ -z "${to_pd}" ] && SEND_PD="NO"
+
+# build the list of fleep recipients (conversation webhooks)
+to_fleep="${!arr_fleep[*]}"
+[ -z "${to_fleep}" ] && SEND_FLEEP="NO"
+
+# build the list of custom recipients
+to_custom="${!arr_custom[*]}"
+[ -z "${to_custom}" ] && SEND_CUSTOM="NO"
+
+# build the list of email recipients (email addresses)
+to_email=
+for x in "${!arr_email[@]}"
+do
+    [ ! -z "${to_email}" ] && to_email="${to_email}, "
+    to_email="${to_email}${x}"
+done
+[ -z "${to_email}" ] && SEND_EMAIL="NO"
+
+# build the list of irc recipients (channels)
+to_irc="${!arr_irc[*]}"
+[ -z "${to_irc}" ] && SEND_IRC="NO"
+
+# build the list of awssns recipients (facilities, servers, and prefixes)
+to_awssns="${!arr_awssns[*]}"
+[ -z "${to_awssns}" ] && SEND_AWSSNS="NO"
+
+# build the list of syslog recipients (facilities, servers, and prefixes)
+to_syslog="${!arr_syslog[*]}"
+[ -z "${to_syslog}" ] && SEND_SYSLOG="NO"
+
+# -----------------------------------------------------------------------------
+# verify the delivery methods supported
+
+# check slack
+[ -z "${SLACK_WEBHOOK_URL}" ] && SEND_SLACK="NO"
+
+# check rocketchat
+[ -z "${ROCKETCHAT_WEBHOOK_URL}" ] && SEND_ROCKETCHAT="NO"
+
+# check alerta
+[ -z "${ALERTA_WEBHOOK_URL}" ] && SEND_ALERTA="NO"
+
+# check flock
+[ -z "${FLOCK_WEBHOOK_URL}" ] && SEND_FLOCK="NO"
+
+# check discord
+[ -z "${DISCORD_WEBHOOK_URL}" ] && SEND_DISCORD="NO"
+
+# check pushover
+[ -z "${PUSHOVER_APP_TOKEN}" ] && SEND_PUSHOVER="NO"
+
+# check pushbullet
+[ -z "${PUSHBULLET_ACCESS_TOKEN}" ] && SEND_PUSHBULLET="NO"
+
+# check twilio
+[ -z "${TWILIO_ACCOUNT_TOKEN}" -o -z "${TWILIO_ACCOUNT_SID}" -o -z "${TWILIO_NUMBER}" ] && SEND_TWILIO="NO"
+
+# check hipchat
+[ -z "${HIPCHAT_AUTH_TOKEN}" ] && SEND_HIPCHAT="NO"
+
+# check messagebird
+[ -z "${MESSAGEBIRD_ACCESS_KEY}" -o -z "${MESSAGEBIRD_NUMBER}" ] && SEND_MESSAGEBIRD="NO"
+
+# check kavenegar
+[ -z "${KAVENEGAR_API_KEY}" -o -z "${KAVENEGAR_SENDER}" ] && SEND_KAVENEGAR="NO"
+
+# check telegram
+[ -z "${TELEGRAM_BOT_TOKEN}" ] && SEND_TELEGRAM="NO"
+
+# check kafka
+[ -z "${KAFKA_URL}" -o -z "${KAFKA_SENDER_IP}" ] && SEND_KAFKA="NO"
+
+# check irc
+[ -z "${IRC_NETWORK}" ] && SEND_IRC="NO"
+
+# check fleep
+[ -z "${FLEEP_SERVER}" -o -z "${FLEEP_SENDER}" ] && SEND_FLEEP="NO"
+
+# check pagerduty.com
+# if we need pd-send, check for the pd-send command
+# https://www.pagerduty.com/docs/guides/agent-install-guide/
+if [ "${SEND_PD}" = "YES" ]
+    then
+    pd_send="$(which pd-send 2>/dev/null || command -v pd-send 2>/dev/null)"
+    if [ -z "${pd_send}" ]
+        then
+        error "Cannot find pd-send command in the system path. Disabling pagerduty.com notifications."
+        SEND_PD="NO"
+    fi
+fi
+
+# if we need curl, check for the curl command
+if [ \( \
+           "${SEND_PUSHOVER}"    = "YES" \
+        -o "${SEND_SLACK}"       = "YES" \
+        -o "${SEND_ROCKETCHAT}"  = "YES" \
+        -o "${SEND_ALERTA}"      = "YES" \
+        -o "${SEND_FLOCK}"       = "YES" \
+        -o "${SEND_DISCORD}"     = "YES" \
+        -o "${SEND_HIPCHAT}"     = "YES" \
+        -o "${SEND_TWILIO}"      = "YES" \
+        -o "${SEND_MESSAGEBIRD}" = "YES" \
+        -o "${SEND_KAVENEGAR}"   = "YES" \
+        -o "${SEND_TELEGRAM}"    = "YES" \
+        -o "${SEND_PUSHBULLET}"  = "YES" \
+        -o "${SEND_KAFKA}"       = "YES" \
+        -o "${SEND_FLEEP}"       = "YES" \
+        -o "${SEND_CUSTOM}"      = "YES" \
+        -o "${SEND_MSTEAM}"        = "YES" \
+    \) -a -z "${curl}" ]
+    then
+    curl="$(which curl 2>/dev/null || command -v curl 2>/dev/null)"
+    if [ -z "${curl}" ]
+        then
+        error "Cannot find curl command in the system path. Disabling all curl based notifications."
+        SEND_PUSHOVER="NO"
+        SEND_PUSHBULLET="NO"
+        SEND_TELEGRAM="NO"
+        SEND_SLACK="NO"
+        SEND_MSTEAM="NO"
+        SEND_ROCKETCHAT="NO"
+        SEND_ALERTA="NO"
+        SEND_FLOCK="NO"
+        SEND_DISCORD="NO"
+        SEND_TWILIO="NO"
+        SEND_HIPCHAT="NO"
+        SEND_MESSAGEBIRD="NO"
+        SEND_KAVENEGAR="NO"
+        SEND_KAFKA="NO"
+        SEND_FLEEP="NO"
+        SEND_CUSTOM="NO"
+    fi
+fi
+
+# if we need sendmail, check for the sendmail command
+if [ "${SEND_EMAIL}" = "YES" -a -z "${sendmail}" ]
+    then
+    sendmail="$(which sendmail 2>/dev/null || command -v sendmail 2>/dev/null)"
+    if [ -z "${sendmail}" ]
+        then
+        debug "Cannot find sendmail command in the system path. Disabling email notifications."
+        SEND_EMAIL="NO"
+    fi
+fi
+
+# if we need logger, check for the logger command
+if [ "${SEND_SYSLOG}" = "YES" -a -z "${logger}" ]
+    then
+    logger="$(which logger 2>/dev/null || command -v logger 2>/dev/null)"
+    if [ -z "${logger}" ]
+        then
+        debug "Cannot find logger command in the system path. Disabling syslog notifications."
+        SEND_SYSLOG="NO"
+    fi
+fi
+
+# if we need aws, check for the aws command
+if [ "${SEND_AWSSNS}" = "YES" -a -z "${aws}" ]
+    then
+    aws="$(which aws 2>/dev/null || command -v aws 2>/dev/null)"
+    if [ -z "${aws}" ]
+        then
+        debug "Cannot find aws command in the system path.  Disabling Amazon SNS notifications."
+        SEND_AWSSNS="NO"
+    fi
+fi
+
+# check that we have at least a method enabled
+if [   "${SEND_EMAIL}"          != "YES" \
+    -a "${SEND_PUSHOVER}"       != "YES" \
+    -a "${SEND_TELEGRAM}"       != "YES" \
+    -a "${SEND_SLACK}"          != "YES" \
+    -a "${SEND_ROCKETCHAT}"     != "YES" \
+    -a "${SEND_ALERTA}"         != "YES" \
+    -a "${SEND_FLOCK}"          != "YES" \
+    -a "${SEND_DISCORD}"        != "YES" \
+    -a "${SEND_TWILIO}"         != "YES" \
+    -a "${SEND_HIPCHAT}"        != "YES" \
+    -a "${SEND_MESSAGEBIRD}"    != "YES" \
+    -a "${SEND_KAVENEGAR}"      != "YES" \
+    -a "${SEND_PUSHBULLET}"     != "YES" \
+    -a "${SEND_KAFKA}"          != "YES" \
+    -a "${SEND_PD}"             != "YES" \
+    -a "${SEND_FLEEP}"          != "YES" \
+    -a "${SEND_CUSTOM}"         != "YES" \
+    -a "${SEND_IRC}"            != "YES" \
+    -a "${SEND_AWSSNS}"         != "YES" \
+    -a "${SEND_SYSLOG}"         != "YES" \
+    -a "${SEND_MSTEAM}"         != "YES" \
+    ]
+    then
+    fatal "All notification methods are disabled. Not sending notification for host '${host}', chart '${chart}' to '${roles}' for '${name}' = '${value}' for status '${status}'."
+fi
+
+# -----------------------------------------------------------------------------
+# get the date the alarm happened
+
+date=$(date --date=@${when} "${date_format}" 2>/dev/null)
+[ -z "${date}" ] && date=$(date "${date_format}" 2>/dev/null)
+[ -z "${date}" ] && date=$(date --date=@${when} 2>/dev/null)
+[ -z "${date}" ] && date=$(date 2>/dev/null)
+
+# ----------------------------------------------------------------------------
+# prepare some extra headers if we've been asked to thread e-mails
+if [ "${SEND_EMAIL}" == "YES" -a "${EMAIL_THREADING}" == "YES" ] ; then
+    email_thread_headers="In-Reply-To: <${chart}-${name}@${host}>\nReferences: <${chart}-${name}@${host}>"
+else
+    email_thread_headers=
+fi
+
+# -----------------------------------------------------------------------------
+# function to URL encode a string
+
+urlencode() {
+    local string="${1}" strlen encoded pos c o
+
+    strlen=${#string}
+    for (( pos=0 ; pos<strlen ; pos++ ))
+    do
+        c=${string:${pos}:1}
+        case "${c}" in
+            [-_.~a-zA-Z0-9])
+                o="${c}"
+                ;;
+
+            *)
+                printf -v o '%%%02x' "'${c}"
+                ;;
+        esac
+        encoded+="${o}"
+    done
+
+    REPLY="${encoded}"
+    echo "${REPLY}"
+}
+
+# -----------------------------------------------------------------------------
+# function to convert a duration in seconds, to a human readable duration
+# using DAYS, MINUTES, SECONDS
+
+duration4human() {
+    local s="${1}" d=0 h=0 m=0 ds="day" hs="hour" ms="minute" ss="second" ret
+    d=$(( s / 86400 ))
+    s=$(( s - (d * 86400) ))
+    h=$(( s / 3600 ))
+    s=$(( s - (h * 3600) ))
+    m=$(( s / 60 ))
+    s=$(( s - (m * 60) ))
+
+    if [ ${d} -gt 0 ]
+    then
+        [ ${m} -ge 30 ] && h=$(( h + 1 ))
+        [ ${d} -gt 1 ] && ds="days"
+        [ ${h} -gt 1 ] && hs="hours"
+        if [ ${h} -gt 0 ]
+        then
+            ret="${d} ${ds} and ${h} ${hs}"
+        else
+            ret="${d} ${ds}"
+        fi
+    elif [ ${h} -gt 0 ]
+    then
+        [ ${s} -ge 30 ] && m=$(( m + 1 ))
+        [ ${h} -gt 1 ] && hs="hours"
+        [ ${m} -gt 1 ] && ms="minutes"
+        if [ ${m} -gt 0 ]
+        then
+            ret="${h} ${hs} and ${m} ${ms}"
+        else
+            ret="${h} ${hs}"
+        fi
+    elif [ ${m} -gt 0 ]
+    then
+        [ ${m} -gt 1 ] && ms="minutes"
+        [ ${s} -gt 1 ] && ss="seconds"
+        if [ ${s} -gt 0 ]
+        then
+            ret="${m} ${ms} and ${s} ${ss}"
+        else
+            ret="${m} ${ms}"
+        fi
+    else
+        [ ${s} -gt 1 ] && ss="seconds"
+        ret="${s} ${ss}"
+    fi
+
+    REPLY="${ret}"
+    echo "${REPLY}"
+}
+
+# -----------------------------------------------------------------------------
+# email sender
+
+send_email() {
+    local ret= opts=() sender_email="${EMAIL_SENDER}" sender_name=
+    if [ "${SEND_EMAIL}" = "YES" ]
+        then
+
+        if [ ! -z "${EMAIL_SENDER}" ]
+            then
+            if [[ "${EMAIL_SENDER}" =~ ^\".*\"\ \<.*\>$ ]]
+                then
+                # the name includes double quotes
+                sender_email="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1)"
+                sender_name="$(echo "${EMAIL_SENDER}" | cut -d '"' -f 2)"
+            elif [[ "${EMAIL_SENDER}" =~ ^\'.*\'\ \<.*\>$ ]]
+                then
+                # the name includes single quotes
+                sender_email="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1)"
+                sender_name="$(echo "${EMAIL_SENDER}" | cut -d "'" -f 2)"
+            elif [[ "${EMAIL_SENDER}" =~ ^.*\ \<.*\>$ ]]
+                then
+                # the name does not have any quotes
+                sender_email="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1)"
+                sender_name="$(echo "${EMAIL_SENDER}" | cut -d '<' -f 1)"
+            fi
+        fi
+
+        [ ! -z "${sender_email}" ] && opts+=(-f "${sender_email}")
+        [ ! -z "${sender_name}" ]  && opts+=(-F "${sender_name}")
+
+        if [ "${debug}" = "1" ]
+            then
+            echo >&2 "--- BEGIN sendmail command ---"
+            printf >&2 "%q " "${sendmail}" -t "${opts[@]}"
+            echo >&2
+            echo >&2 "--- END sendmail command ---"
+        fi
+
+        "${sendmail}" -t "${opts[@]}"
+        ret=$?
+
+        if [ ${ret} -eq 0 ]
+        then
+            info "sent email notification for: ${host} ${chart}.${name} is ${status} to '${to_email}'"
+            return 0
+        else
+            error "failed to send email notification for: ${host} ${chart}.${name} is ${status} to '${to_email}' with error code ${ret}."
+            return 1
+        fi
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# pushover sender
+
+send_pushover() {
+    local apptoken="${1}" usertokens="${2}" when="${3}" url="${4}" status="${5}" title="${6}" message="${7}" httpcode sent=0 user priority
+
+    if [ "${SEND_PUSHOVER}" = "YES" -a ! -z "${apptoken}" -a ! -z "${usertokens}" -a ! -z "${title}" -a ! -z "${message}" ]
+        then
+
+        # https://pushover.net/api
+        priority=-2
+        case "${status}" in
+            CLEAR) priority=-1;;   # low priority: no sound or vibration
+            WARNING) priority=0;;  # normal priority: respect quiet hours
+            CRITICAL) priority=1;; # high priority: bypass quiet hours
+            *) priority=-2;;       # lowest priority: no notification at all
+        esac
+
+        for user in ${usertokens}
+        do
+            httpcode=$(docurl \
+                --form-string "token=${apptoken}" \
+                --form-string "user=${user}" \
+                --form-string "html=1" \
+                --form-string "title=${title}" \
+                --form-string "message=${message}" \
+                --form-string "timestamp=${when}" \
+                --form-string "url=${url}" \
+                --form-string "url_title=Open netdata dashboard to view the alarm" \
+                --form-string "priority=${priority}" \
+                https://api.pushover.net/1/messages.json)
+
+            if [ "${httpcode}" = "200" ]
+            then
+                info "sent pushover notification for: ${host} ${chart}.${name} is ${status} to '${user}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send pushover notification for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# pushbullet sender
+
+send_pushbullet() {
+    local userapikey="${1}" source_device="${2}" recipients="${3}" url="${4}" title="${5}" message="${6}" httpcode sent=0 user
+    if [ "${SEND_PUSHBULLET}" = "YES" -a ! -z "${userapikey}" -a ! -z "${recipients}" -a ! -z "${message}" -a ! -z "${title}" ]
+        then
+        #https://docs.pushbullet.com/#create-push
+        for user in ${recipients}
+        do
+            httpcode=$(docurl \
+              --header 'Access-Token: '${userapikey}'' \
+              --header 'Content-Type: application/json' \
+              --data-binary  @<(cat <<EOF
+                              {"title": "${title}",
+                              "type": "link",
+                              "email": "${user}",
+                              "body": "$( echo -n ${message})",
+                              "url": "${url}",
+                              "source_device_iden": "${source_device}"}
+EOF
+               ) "https://api.pushbullet.com/v2/pushes" -X POST)
+
+            if [ "${httpcode}" = "200" ]
+            then
+                info "sent pushbullet notification for: ${host} ${chart}.${name} is ${status} to '${user}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send pushbullet notification for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# kafka sender
+
+send_kafka() {
+    local httpcode sent=0 
+    if [ "${SEND_KAFKA}" = "YES" ]
+        then
+            httpcode=$(docurl -X POST \
+                --data "{host_ip:\"${KAFKA_SENDER_IP}\",when:${when},name:\"${name}\",chart:\"${chart}\",family:\"${family}\",status:\"${status}\",old_status:\"${old_status}\",value:${value},old_value:${old_value},duration:${duration},non_clear_duration:${non_clear_duration},units:\"${units}\",info:\"${info}\"}" \
+                "${KAFKA_URL}")
+
+            if [ "${httpcode}" = "204" ]
+            then
+                info "sent kafka data for: ${host} ${chart}.${name} is ${status} and ip '${KAFKA_SENDER_IP}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send kafka data for: ${host} ${chart}.${name} is ${status} and ip '${KAFKA_SENDER_IP}' with HTTP error code ${httpcode}."
+            fi
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# pagerduty.com sender
+
+send_pd() {
+    local recipients="${1}" sent=0
+    unset t
+    case ${status} in
+        CLEAR)    t='resolve';;
+        WARNING)  t='trigger';;
+        CRITICAL) t='trigger';;
+    esac
+
+    if [ ${SEND_PD} = "YES" -a ! -z "${t}" ]
+        then
+        for PD_SERVICE_KEY in ${recipients}
+        do
+            d="${status} ${name} = ${value_string} - ${host}, ${family}"
+            ${pd_send} -k ${PD_SERVICE_KEY} \
+                       -t ${t} \
+                       -d "${d}" \
+                       -i ${host}:${chart}:${name} \
+                       -f 'info'="${info}" \
+                       -f 'value_w_units'="${value_string}" \
+                       -f 'when'="${when}" \
+                       -f 'duration'="${duration}" \
+                       -f 'roles'="${roles}" \
+                       -f 'host'="${host}" \
+                       -f 'unique_id'="${unique_id}" \
+                       -f 'alarm_id'="${alarm_id}" \
+                       -f 'event_id'="${event_id}" \
+                       -f 'name'="${name}" \
+                       -f 'chart'="${chart}" \
+                       -f 'family'="${family}" \
+                       -f 'status'="${status}" \
+                       -f 'old_status'="${old_status}" \
+                       -f 'value'="${value}" \
+                       -f 'old_value'="${old_value}" \
+                       -f 'src'="${src}" \
+                       -f 'non_clear_duration'="${non_clear_duration}" \
+                       -f 'units'="${units}"
+            retval=$?
+            if [ ${retval} -eq 0 ]
+                then
+                    info "sent pagerduty.com notification for host ${host} ${chart}.${name} using service key ${PD_SERVICE_KEY::-26}....: ${d}"
+                    sent=$((sent + 1))
+                else
+                    error "failed to send pagerduty.com notification for ${host} ${chart}.${name} using service key ${PD_SERVICE_KEY::-26}.... (error code ${retval}): ${d}"
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# twilio sender
+
+send_twilio() {
+    local accountsid="${1}" accounttoken="${2}" twilionumber="${3}" recipients="${4}"  title="${5}" message="${6}" httpcode sent=0 user
+    if [ "${SEND_TWILIO}" = "YES" -a ! -z "${accountsid}" -a ! -z "${accounttoken}" -a ! -z "${twilionumber}" -a ! -z "${recipients}" -a ! -z "${message}" -a ! -z "${title}" ]
+        then
+        #https://www.twilio.com/packages/labs/code/bash/twilio-sms
+        for user in ${recipients}
+        do
+            httpcode=$(docurl -X POST \
+                --data-urlencode "From=${twilionumber}" \
+                --data-urlencode "To=${user}" \
+                --data-urlencode "Body=${title} ${message}" \
+                -u "${accountsid}:${accounttoken}" \
+                "https://api.twilio.com/2010-04-01/Accounts/${accountsid}/Messages.json")
+
+            if [ "${httpcode}" = "201" ]
+            then
+                info "sent Twilio SMS for: ${host} ${chart}.${name} is ${status} to '${user}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send Twilio SMS for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+
+# -----------------------------------------------------------------------------
+# hipchat sender
+
+send_hipchat() {
+    local authtoken="${1}" recipients="${2}" message="${3}" httpcode sent=0 room color sender msg_format notify
+
+    # remove <small></small> from the message
+    message="${message//<small>/}"
+    message="${message//<\/small>/}"
+
+    if [ "${SEND_HIPCHAT}" = "YES" -a ! -z "${HIPCHAT_SERVER}" -a ! -z "${authtoken}" -a ! -z "${recipients}" -a ! -z "${message}" ]
+    then
+        # A label to be shown in addition to the sender's name
+        # Valid length range: 0 - 64. 
+        sender="netdata"
+
+        # Valid values: html, text.
+        # Defaults to 'html'.
+        msg_format="html"
+
+        # Background color for message. Valid values: yellow, green, red, purple, gray, random. Defaults to 'yellow'.
+        case "${status}" in
+            WARNING)  color="yellow" ;;
+            CRITICAL) color="red" ;;
+            CLEAR)    color="green" ;;
+            *)        color="gray" ;;
+        esac
+
+        # Whether this message should trigger a user notification (change the tab color, play a sound, notify mobile phones, etc).
+        # Each recipient's notification preferences are taken into account.
+        # Defaults to false.
+        notify="true"
+
+        for room in ${recipients}
+        do
+            httpcode=$(docurl -X POST \
+                    -H "Content-type: application/json" \
+                    -H "Authorization: Bearer ${authtoken}" \
+                    -d "{\"color\": \"${color}\", \"from\": \"${host}\", \"message_format\": \"${msg_format}\", \"message\": \"${message}\", \"notify\": \"${notify}\"}" \
+                    "https://${HIPCHAT_SERVER}/v2/room/${room}/notification")
+ 
+            if [ "${httpcode}" = "204" ]
+            then
+                info "sent HipChat notification for: ${host} ${chart}.${name} is ${status} to '${room}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send HipChat notification for: ${host} ${chart}.${name} is ${status} to '${room}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+
+# -----------------------------------------------------------------------------
+# messagebird sender
+
+send_messagebird() {
+    local accesskey="${1}" messagebirdnumber="${2}" recipients="${3}"  title="${4}" message="${5}" httpcode sent=0 user
+    if [ "${SEND_MESSAGEBIRD}" = "YES" -a ! -z "${accesskey}" -a ! -z "${messagebirdnumber}" -a ! -z "${recipients}" -a ! -z "${message}" -a ! -z "${title}" ]
+        then
+        #https://developers.messagebird.com/docs/messaging
+        for user in ${recipients}
+        do
+            httpcode=$(docurl -X POST \
+                --data-urlencode "originator=${messagebirdnumber}" \
+                --data-urlencode "recipients=${user}" \
+                --data-urlencode "body=${title} ${message}" \
+		        --data-urlencode "datacoding=auto" \
+                -H "Authorization: AccessKey ${accesskey}" \
+                "https://rest.messagebird.com/messages")
+
+            if [ "${httpcode}" = "201" ]
+            then
+                info "sent Messagebird SMS for: ${host} ${chart}.${name} is ${status} to '${user}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send Messagebird SMS for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# kavenegar sender
+
+send_kavenegar() {
+    local API_KEY="${1}" kavenegarsender="${2}" recipients="${3}"  title="${4}" message="${5}" httpcode sent=0 user
+    if [ "${SEND_KAVENEGAR}" = "YES" -a ! -z "${API_KEY}" -a ! -z "${kavenegarsender}" -a ! -z "${recipients}" -a ! -z "${message}" -a ! -z "${title}" ]
+        then
+        # http://api.kavenegar.com/v1/{API-KEY}/sms/send.json
+        for user in ${recipients}
+        do
+            httpcode=$(docurl -X POST http://api.kavenegar.com/v1/${API_KEY}/sms/send.json \
+                --data-urlencode "sender=${kavenegarsender}" \
+                --data-urlencode "receptor=${user}" \
+                --data-urlencode "message=${title} ${message}")
+
+            if [ "${httpcode}" = "201" ]
+            then
+                info "sent Kavenegar SMS for: ${host} ${chart}.${name} is ${status} to '${user}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send Kavenegar SMS for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# telegram sender
+
+send_telegram() {
+    local bottoken="${1}" chatids="${2}" message="${3}" httpcode sent=0 chatid emoji disableNotification=""
+
+    if [ "${status}" = "CLEAR" ]; then disableNotification="--data-urlencode disable_notification=true"; fi
+    
+    case "${status}" in
+        WARNING)  emoji="⚠️" ;;
+        CRITICAL) emoji="🔴" ;;
+        CLEAR)    emoji="✅" ;;
+        *)        emoji="⚪️" ;;
+    esac
+
+    if [ "${SEND_TELEGRAM}" = "YES" -a ! -z "${bottoken}" -a ! -z "${chatids}" -a ! -z "${message}" ];
+    then
+        for chatid in ${chatids}
+        do
+            # https://core.telegram.org/bots/api#sendmessage
+            httpcode=$(docurl ${disableNotification} \
+                --data-urlencode "parse_mode=HTML" \
+                --data-urlencode "disable_web_page_preview=true" \
+                --data-urlencode "text=${emoji} ${message}" \
+                "https://api.telegram.org/bot${bottoken}/sendMessage?chat_id=${chatid}")
+
+            if [ "${httpcode}" = "200" ]
+            then
+                info "sent telegram notification for: ${host} ${chart}.${name} is ${status} to '${chatid}'"
+                sent=$((sent + 1))
+            elif [ "${httpcode}" = "401" ]
+            then
+                error "failed to send telegram notification for: ${host} ${chart}.${name} is ${status} to '${chatid}': Wrong bot token."
+            else
+                error "failed to send telegram notification for: ${host} ${chart}.${name} is ${status} to '${chatid}' with HTTP error code ${httpcode}."
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# Microsoft Team sender
+
+send_msteam() {
+
+    local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+    [ "${SEND_MSTEAM}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  icon="${MSTEAM_ICON_WARNING}" && color="${MSTEAM_COLOR_WARNING}";;
+        CRITICAL) icon="${MSTEAM_ICON_CRITICAL}" && color="${MSTEAM_COLOR_CRITICAL}";;
+        CLEAR)    icon="${MSTEAM_ICON_CLEAR}" && color="${MSTEAM_COLOR_CLEAR}";;
+        *)        icon="${MSTEAM_ICON_DEFAULT}" && color="${MSTEAM_COLOR_DEFAULT}";;
+    esac
+
+    for channel in ${channels}
+    do
+        ## More details are available here regarding the payload syntax options : https://docs.microsoft.com/en-us/outlook/actionable-messages/message-card-reference
+        ## Online designer : https://acdesignerbeta.azurewebsites.net/
+        payload="$(cat <<EOF
+        {
+            "@context": "http://schema.org/extensions",
+            "@type": "MessageCard",
+            "themeColor": "${color}",
+            "title": "$icon Alert ${status} from netdata for ${host}",
+            "text": "${host} ${status_message}, ${chart} (_${family}_), *${alarm}*",
+            "potentialAction": [
+            {
+                "@type": "OpenUri",
+                "name": "Netdata",
+                "targets": [
+                { "os": "default", "uri": "${goto_url}" }
+                ]
+            }
+            ]
+        }
+EOF
+        )"
+
+	# Replacing in the webhook CHANNEL string by the MS Teams channel name from conf file.
+	webhook="${webhook//CHANNEL/${channel}}"
+
+	httpcode=$(docurl -H "Content-Type: application/json" -d "${payload}" "${webhook}")
+
+        if [ "${httpcode}" = "200" ]
+        then
+            info "sent Microsoft team notification for: ${host} ${chart}.${name} is ${status} to '${webhook}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send Microsoft team notification for: ${host} ${chart}.${name} is ${status} to '${webhook}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+
+# slack sender
+
+send_slack() {
+    local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+    [ "${SEND_SLACK}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  color="warning" ;;
+        CRITICAL) color="danger" ;;
+        CLEAR)    color="good" ;;
+        *)        color="#777777" ;;
+    esac
+
+    for channel in ${channels}
+    do
+        payload="$(cat <<EOF
+        {
+            "channel": "#${channel}",
+            "username": "netdata on ${host}",
+            "icon_url": "${images_base_url}/images/seo-performance-128.png",
+            "text": "${host} ${status_message}, \`${chart}\` (_${family}_), *${alarm}*",
+            "attachments": [
+                {
+                    "fallback": "${alarm} - ${chart} (${family}) - ${info}",
+                    "color": "${color}",
+                    "title": "${alarm}",
+                    "title_link": "${goto_url}",
+                    "text": "${info}",
+                    "fields": [
+                        {
+                            "title": "${chart}",
+                            "short": true
+                        },
+                        {
+                            "title": "${family}",
+                            "short": true
+                        }
+                    ],
+                    "thumb_url": "${image}",
+                    "footer": "by <${goto_url}|${this_host}>",
+                    "ts": ${when}
+                }
+            ]
+        }
+EOF
+        )"
+
+        httpcode=$(docurl -X POST --data-urlencode "payload=${payload}" "${webhook}")
+        if [ "${httpcode}" = "200" ]
+        then
+            info "sent slack notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send slack notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+
+# -----------------------------------------------------------------------------
+# rocketchat sender
+
+send_rocketchat() {
+    local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+    [ "${SEND_ROCKETCHAT}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  color="warning" ;;
+        CRITICAL) color="danger" ;;
+        CLEAR)    color="good" ;;
+        *)        color="#777777" ;;
+    esac
+
+    for channel in ${channels}
+    do
+        payload="$(cat <<EOF
+        {
+            "channel": "#${channel}",
+            "alias": "netdata on ${host}",
+            "avatar": "${images_base_url}/images/seo-performance-128.png",
+            "text": "${host} ${status_message}, \`${chart}\` (_${family}_), *${alarm}*",
+            "attachments": [
+                {
+                    "color": "${color}",
+                    "title": "${alarm}",
+                    "title_link": "${goto_url}",
+                    "text": "${info}",
+                    "fields": [
+                        {
+                            "title": "${chart}",
+                            "short": true,
+                            "value": "chart"
+                        },
+                        {
+                            "title": "${family}",
+                            "short": true,
+                            "value": "family"
+                        }
+                    ],
+                    "thumb_url": "${image}",
+                    "ts": "${when}"
+                }
+            ]
+        }
+EOF
+        )"
+
+        httpcode=$(docurl -X POST --data-urlencode "payload=${payload}" "${webhook}")
+        if [ "${httpcode}" = "200" ]
+        then
+            info "sent rocketchat notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send rocketchat notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# alerta sender
+
+send_alerta() {
+    local webhook="${1}" channels="${2}" httpcode sent=0 channel severity content
+
+    [ "${SEND_ALERTA}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  severity="warning" ;;
+        CRITICAL) severity="critical" ;;
+        CLEAR)    severity="cleared" ;;
+        *)        severity="unknown" ;;
+    esac
+
+    info=$( echo -n ${info})
+
+    # the "event" property must be unique and repetible between states to let alerta do automatic correlation using severity value
+    for channel in ${channels}
+    do
+        content="{"
+        content="$content \"environment\": \"${channel}\","
+        content="$content \"service\": [\"${host}\"],"
+        content="$content \"resource\": \"${host}\","
+        content="$content \"event\": \"${name}.${chart} (${family})\","
+        content="$content \"severity\": \"${severity}\","
+        content="$content \"value\": \"${alarm}\","
+        content="$content \"text\": \"${info}\""
+        content="$content }"
+
+
+        httpcode=$(docurl -X POST "${webhook}/alert" -H "Content-Type: application/json" -H "Authorization: Key $ALERTA_API_KEY" -d "$content" )
+
+        if [[ "${httpcode}" = "200" || "${httpcode}" = "201" ]]
+        then
+            info "sent alerta notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send alerta notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# flock sender
+
+send_flock() {
+    local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+    [ "${SEND_FLOCK}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  color="warning" ;;
+        CRITICAL) color="danger" ;;
+        CLEAR)    color="good" ;;
+        *)        color="#777777" ;;
+    esac
+
+    for channel in ${channels}
+    do
+        httpcode=$(docurl -X POST "${webhook}" -H "Content-Type: application/json" -d "{
+            \"sendAs\": {
+                \"name\" : \"netdata on ${host}\",
+                \"profileImage\" : \"${images_base_url}/images/seo-performance-128.png\"
+            },
+            \"text\": \"${host} *${status_message}*\",
+            \"timestamp\": \"${when}\",
+            \"attachments\": [
+                {
+                    \"description\": \"${chart} (${family}) - ${info}\",
+                    \"color\": \"${color}\",
+                    \"title\": \"${alarm}\",
+                    \"url\": \"${goto_url}\",
+                    \"text\": \"${info}\",
+                    \"views\": {
+                        \"image\": {
+                            \"original\": { \"src\": \"${image}\", \"width\": 400, \"height\": 400 },
+                            \"thumbnail\": { \"src\": \"${image}\", \"width\": 50, \"height\": 50 },
+                            \"filename\": \"${image}\"
+                            }
+                    }
+                }
+            ]
+        }" )
+        if [ "${httpcode}" = "200" ]
+        then
+            info "sent flock notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send flock notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# discord sender
+
+send_discord() {
+    local webhook="${1}/slack" channels="${2}" httpcode sent=0 channel color payload username
+
+    [ "${SEND_DISCORD}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  color="warning" ;;
+        CRITICAL) color="danger" ;;
+        CLEAR)    color="good" ;;
+        *)        color="#777777" ;;
+    esac
+
+    for channel in ${channels}
+    do
+        username="netdata on ${host}"
+        [ ${#username} -gt 32 ] && username="${username:0:29}..."
+
+        payload="$(cat <<EOF
+        {
+            "channel": "#${channel}",
+            "username": "${username}",
+            "text": "${host} ${status_message}, \`${chart}\` (_${family}_), *${alarm}*",
+            "icon_url": "${images_base_url}/images/seo-performance-128.png",
+            "attachments": [
+                {
+                    "color": "${color}",
+                    "title": "${alarm}",
+                    "title_link": "${goto_url}",
+                    "text": "${info}",
+                    "fields": [
+                        {
+                            "title": "${chart}",
+                            "value": "${family}"
+                        }
+                    ],
+                    "thumb_url": "${image}",
+                    "footer_icon": "${images_base_url}/images/seo-performance-128.png",
+                    "footer": "${this_host}",
+                    "ts": ${when}
+                }
+            ]
+        }
+EOF
+        )"
+
+        httpcode=$(docurl -X POST --data-urlencode "payload=${payload}" "${webhook}")
+        if [ "${httpcode}" = "200" ]
+        then
+            info "sent discord notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send discord notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# fleep sender
+
+send_fleep() {
+    local httpcode sent=0 webhooks="${1}" data message
+    if [ "${SEND_FLEEP}" = "YES" ] ; then
+            message="${host} ${status_message}, \`${chart}\` (${family}), *${alarm}*\\n${info}"
+
+            for hook in "${webhooks}" ; do
+                data="{ "
+                data="${data} 'message': '${message}', "
+                data="${data} 'user': '${FLEEP_SENDER}' "
+                data="${data} }"
+
+                httpcode=$(docurl -X POST --data "${data}" "https://fleep.io/hook/${hook}")
+
+                if [ "${httpcode}" = "200" ] ; then
+                    info "sent fleep data for: ${host} ${chart}.${name} is ${status} and user '${FLEEP_SENDER}'"
+                    sent=$((sent + 1))
+                else
+                    error "failed to send fleep data for: ${host} ${chart}.${name} is ${status} and user '${FLEEP_SENDER}' with HTTP error code ${httpcode}."
+                fi
+            done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# irc sender
+
+send_irc() {
+    local NICKNAME="${1}" REALNAME="${2}" CHANNELS="${3}" NETWORK="${4}" SERVERNAME="${5}" MESSAGE="${6}" sent=0 channel color send_alarm reply_codes error
+    
+    if [ "${SEND_IRC}" = "YES" -a ! -z "${NICKNAME}" -a ! -z "${REALNAME}" -a ! -z "${CHANNELS}" -a ! -z "${NETWORK}" -a ! -z "${SERVERNAME}" ]
+    then
+        case "${status}" in
+            WARNING)  color="warning" ;;
+            CRITICAL) color="danger" ;;
+            CLEAR)    color="good" ;;
+            *)        color="#777777" ;;
+        esac
+
+        for CHANNEL in ${CHANNELS}
+        do
+            error=0
+            send_alarm=$(echo -e "USER ${NICKNAME} guest ${REALNAME} ${SERVERNAME}\nNICK ${NICKNAME}\nJOIN ${CHANNEL}\nPRIVMSG ${CHANNEL} :${MESSAGE}\nQUIT\n" \ | nc ${NETWORK} 6667)
+            reply_codes=$(echo ${send_alarm} | cut -d ' ' -f 2 | grep -o '[0-9]*')
+            for code in ${reply_codes}
+            do
+                [ "${code}" -ge 400 -a "${code}" -le 599 ] && error=1 && break
+            done
+
+            if [ "${error}" -eq 0 ]
+            then
+                info "sent irc notification for: ${host} ${chart}.${name} is ${status} to '${CHANNEL}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send irc notification for: ${host} ${chart}.${name} is ${status} to '${CHANNEL}', with error code ${code}." 
+            fi
+        done
+    fi
+    
+    [ ${sent} -gt 0 ] && return 0
+    
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# Amazon SNS sender
+
+send_awssns() {
+    local targets="${1}" message='' sent=0 region=''
+    local default_format="${status} on ${host} at ${date}: ${chart} ${value_string}"
+
+    [ "${SEND_AWSSNS}" = "YES" ] || return 1
+
+    message=${AWSSNS_MESSAGE_FORMAT:-${default_format}}
+
+    for target in ${targets} ; do
+        # Extract the region from the target ARN.  We need to explicitly specify the region so that it matches up correctly.
+        region="$(echo ${target} | cut -f 4 -d ':')"
+        ${aws} sns publish --region "${region}" --subject "${host} ${status_message} - ${name//_/ } - ${chart}" --message "${message}" --target-arn ${target} &>/dev/null
+        if [ $? = 0 ]; then
+            info "sent Amazon SNS notification for: ${host} ${chart}.${name} is ${status} to '${target}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send Amazon SNS notification for: ${host} ${chart}.${name} is ${status} to '${target}'" 
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# syslog sender
+
+send_syslog() {
+    local facility=${SYSLOG_FACILITY:-"local6"} level='info' targets="${1}"
+    local priority='' message='' host='' port='' prefix=''
+    local temp1='' temp2=''
+
+    [ "${SEND_SYSLOG}" = "YES" ] || return 1
+
+    if [ "${status}" = "CRITICAL" ] ; then
+        level='crit'
+    elif [ "${status}" = "WARNING" ] ; then
+        level='warning'
+    fi
+
+    for target in ${targets} ; do
+        priority="${facility}.${level}"
+        message=''
+        host=''
+        port=''
+        prefix=''
+        temp1=''
+        temp2=''
+
+        prefix=$(echo ${target} | cut -d '/' -f 2)
+        temp1=$(echo ${target} | cut -d '/' -f 1)
+
+        if [ ${prefix} != ${temp1} ] ; then
+            if (echo ${temp1} | grep -q '@' ) ; then
+                temp2=$(echo ${temp1} | cut -d '@' -f 1)
+                host=$(echo ${temp1} | cut -d '@' -f 2)
+
+                if [ ${temp2} != ${host} ] ; then
+                    priority=${temp2}
+                fi
+
+                port=$(echo ${host} | rev | cut -d ':' -f 1 | rev)
+
+                if ( echo ${host} | grep -E -q '\[.*\]' ) ; then
+                    if ( echo ${port} | grep -q ']' ) ; then
+                        port=''
+                    else
+                        host=$(echo ${host} | rev | cut -d ':' -f 2- | rev)
+                    fi
+                else
+                    if [ ${port} = ${host} ] ; then
+                        port=''
+                    else
+                        host=$(echo ${host} | cut -d ':' -f 1)
+                    fi
+                fi
+            else
+                priority=${temp1}
+            fi
+        fi
+
+        message="${prefix} ${status} on ${host} at ${date}: ${chart} ${value_string}"
+
+        if [ ${host} ] ; then
+            logger_options="${logger_options} -n ${host}"
+            if [ ${port} ] ; then
+                logger_options="${logger_options} -P ${port}"
+            fi
+        fi
+
+        ${logger} -p ${priority} ${logger_options} "${message}"
+    done
+
+    return $?
+}
+
+
+# -----------------------------------------------------------------------------
+# prepare the content of the notification
+
+# the url to send the user on click
+urlencode "${host}" >/dev/null; url_host="${REPLY}"
+urlencode "${chart}" >/dev/null; url_chart="${REPLY}"
+urlencode "${family}" >/dev/null; url_family="${REPLY}"
+urlencode "${name}" >/dev/null; url_name="${REPLY}"
+goto_url="${NETDATA_REGISTRY_URL}/goto-host-from-alarm.html?host=${url_host}&chart=${url_chart}&family=${url_family}&alarm=${url_name}&alarm_unique_id=${unique_id}&alarm_id=${alarm_id}&alarm_event_id=${event_id}"
+
+# the severity of the alarm
+severity="${status}"
+
+# the time the alarm was raised
+duration4human ${duration} >/dev/null; duration_txt="${REPLY}"
+duration4human ${non_clear_duration} >/dev/null; non_clear_duration_txt="${REPLY}"
+raised_for="(was ${old_status,,} for ${duration_txt})"
+
+# the key status message
+status_message="status unknown"
+
+# the color of the alarm
+color="grey"
+
+# the alarm value
+alarm="${name//_/ } = ${value_string}"
+
+# the image of the alarm
+image="${images_base_url}/images/seo-performance-128.png"
+
+# prepare the title based on status
+case "${status}" in
+	CRITICAL)
+        image="${images_base_url}/images/alert-128-red.png"
+        status_message="is critical"
+        color="#ca414b"
+        ;;
+
+    WARNING)
+        image="${images_base_url}/images/alert-128-orange.png"
+        status_message="needs attention"
+        color="#ffc107"
+		;;
+
+	CLEAR)
+        image="${images_base_url}/images/check-mark-2-128-green.png"
+    	status_message="recovered"
+		color="#77ca6d"
+		;;
+esac
+
+if [ "${status}" = "CLEAR" ]
+then
+    severity="Recovered from ${old_status}"
+    if [ ${non_clear_duration} -gt ${duration} ]
+    then
+        raised_for="(alarm was raised for ${non_clear_duration_txt})"
+    fi
+
+    # don't show the value when the status is CLEAR
+    # for certain alarms, this value might not have any meaning
+    alarm="${name//_/ } ${raised_for}"
+
+elif [ "${old_status}" = "WARNING" -a "${status}" = "CRITICAL" ]
+then
+    severity="Escalated to ${status}"
+    if [ ${non_clear_duration} -gt ${duration} ]
+    then
+        raised_for="(alarm is raised for ${non_clear_duration_txt})"
+    fi
+
+elif [ "${old_status}" = "CRITICAL" -a "${status}" = "WARNING" ]
+then
+    severity="Demoted to ${status}"
+    if [ ${non_clear_duration} -gt ${duration} ]
+    then
+        raised_for="(alarm is raised for ${non_clear_duration_txt})"
+    fi
+
+else
+    raised_for=
+fi
+
+# prepare HTML versions of elements
+info_html=
+[ ! -z "${info}" ] && info_html=" <small><br/>${info}</small>"
+
+raised_for_html=
+[ ! -z "${raised_for}" ] && raised_for_html="<br/><small>${raised_for}</small>"
+
+# -----------------------------------------------------------------------------
+# send the slack notification
+
+# slack aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_slack "${SLACK_WEBHOOK_URL}" "${to_slack}"
+SENT_SLACK=$?
+
+# -----------------------------------------------------------------------------
+# send the Microsoft notification
+
+# Microsoft team aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_msteam "${MSTEAM_WEBHOOK_URL}" "${to_msteam}"
+SENT_MSTEAM=$?
+
+# -----------------------------------------------------------------------------
+# send the rocketchat notification
+
+# rocketchat aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_rocketchat "${ROCKETCHAT_WEBHOOK_URL}" "${to_rocketchat}"
+SENT_ROCKETCHAT=$?
+
+# -----------------------------------------------------------------------------
+# send the alerta notification
+
+# alerta aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_alerta "${ALERTA_WEBHOOK_URL}" "${to_alerta}"
+SENT_ALERTA=$?
+
+# -----------------------------------------------------------------------------
+# send the flock notification
+
+# flock aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_flock "${FLOCK_WEBHOOK_URL}" "${to_flock}"
+SENT_FLOCK=$?
+
+# -----------------------------------------------------------------------------
+# send the discord notification
+
+# discord aggregates posts from the same username
+# so we use "${host} ${status}" as the bot username, to make them diff
+
+send_discord "${DISCORD_WEBHOOK_URL}" "${to_discord}"
+SENT_DISCORD=$?
+
+# -----------------------------------------------------------------------------
+# send the pushover notification
+
+send_pushover "${PUSHOVER_APP_TOKEN}" "${to_pushover}" "${when}" "${goto_url}" "${status}" "${host} ${status_message} - ${name//_/ } - ${chart}" "
+<font color=\"${color}\"><b>${alarm}</b></font>${info_html}<br/>&nbsp;
+<small><b>${chart}</b><br/>Chart<br/>&nbsp;</small>
+<small><b>${family}</b><br/>Family<br/>&nbsp;</small>
+<small><b>${severity}</b><br/>Severity<br/>&nbsp;</small>
+<small><b>${date}${raised_for_html}</b><br/>Time<br/>&nbsp;</small>
+<a href=\"${goto_url}\">View Netdata</a><br/>&nbsp;
+<small><small>The source of this alarm is line ${src}</small></small>
+"
+
+SENT_PUSHOVER=$?
+
+# -----------------------------------------------------------------------------
+# send the pushbullet notification
+
+send_pushbullet "${PUSHBULLET_ACCESS_TOKEN}" "${PUSHBULLET_SOURCE_DEVICE}" "${to_pushbullet}" "${goto_url}" "${host} ${status_message} - ${name//_/ } - ${chart}" "${alarm}\n
+Severity: ${severity}\n
+Chart: ${chart}\n
+Family: ${family}\n
+$(date -d @${when})\n
+The source of this alarm is line ${src}"
+
+SENT_PUSHBULLET=$?
+
+# -----------------------------------------------------------------------------
+# send the twilio SMS
+
+send_twilio "${TWILIO_ACCOUNT_SID}" "${TWILIO_ACCOUNT_TOKEN}" "${TWILIO_NUMBER}" "${to_twilio}" "${host} ${status_message} - ${name//_/ } - ${chart}" "${alarm} 
+Severity: ${severity}
+Chart: ${chart}
+Family: ${family}
+${info}"
+
+SENT_TWILIO=$?
+
+# -----------------------------------------------------------------------------
+# send the messagebird SMS
+
+send_messagebird "${MESSAGEBIRD_ACCESS_KEY}" "${MESSAGEBIRD_NUMBER}" "${to_messagebird}" "${host} ${status_message} - ${name//_/ } - ${chart}" "${alarm} 
+Severity: ${severity}
+Chart: ${chart}
+Family: ${family}
+${info}"
+
+SENT_MESSAGEBIRD=$?
+
+
+# -----------------------------------------------------------------------------
+# send the kavenegar SMS
+
+send_kavenegar "${KAVENEGAR_API_KEY}" "${KAVENEGAR_SENDER}" "${to_kavenegar}" "${host} ${status_message} - ${name//_/ } - ${chart}" "${alarm} 
+Severity: ${severity}
+Chart: ${chart}
+Family: ${family}
+${info}"
+
+SENT_KAVENEGAR=$?
+
+
+# -----------------------------------------------------------------------------
+# send the telegram.org message
+
+# https://core.telegram.org/bots/api#formatting-options
+send_telegram "${TELEGRAM_BOT_TOKEN}" "${to_telegram}" "${host} ${status_message} - <b>${name//_/ }</b>
+${chart} (${family})
+<a href=\"${goto_url}\">${alarm}</a>
+<i>${info}</i>"
+
+SENT_TELEGRAM=$?
+
+
+# -----------------------------------------------------------------------------
+# send the kafka message
+
+send_kafka
+SENT_KAFKA=$?
+
+
+# -----------------------------------------------------------------------------
+# send the pagerduty.com message
+
+send_pd "${to_pd}"
+SENT_PD=$?
+
+# -----------------------------------------------------------------------------
+# send the fleep message
+
+send_fleep "${to_fleep}"
+SENT_FLEEP=$?
+
+# -----------------------------------------------------------------------------
+# send the irc message
+
+send_irc "${IRC_NICKNAME}" "${IRC_REALNAME}" "${to_irc}" "${IRC_NETWORK}" "${host}" "${host} ${status_message} - ${name//_/ } - ${chart} ----- ${alarm} 
+Severity: ${severity}
+Chart: ${chart}
+Family: ${family}
+${info}"
+
+SENT_IRC=$?
+
+# -----------------------------------------------------------------------------
+# send the custom message
+
+send_custom() {
+    # is it enabled?
+    [ "${SEND_CUSTOM}" != "YES" ] && return 1
+
+    # do we have any sender?
+    [ -z "${1}" ] && return 1
+
+    # call the custom_sender function
+    custom_sender "${@}"
+}
+
+send_custom "${to_custom}"
+SENT_CUSTOM=$?
+
+
+# -----------------------------------------------------------------------------
+# send hipchat message
+
+send_hipchat "${HIPCHAT_AUTH_TOKEN}" "${to_hipchat}" " \
+${host} ${status_message}<br/> \
+<b>${alarm}</b> ${info_html}<br/> \
+<b>${chart}</b> (family <b>${family}</b>)<br/> \
+<b>${date}${raised_for_html}</b><br/> \
+<a href=\\\"${goto_url}\\\">View netdata dashboard</a> \
+(source of alarm ${src}) \
+"
+
+SENT_HIPCHAT=$?
+
+
+# -----------------------------------------------------------------------------
+# send the Amazon SNS message
+
+send_awssns ${to_awssns}
+
+SENT_AWSSNS=$?
+
+
+# -----------------------------------------------------------------------------
+# send the syslog message
+
+send_syslog ${to_syslog}
+
+SENT_SYSLOG=$?
+
+
+# -----------------------------------------------------------------------------
+# send the email
+
+send_email <<EOF
+To: ${to_email}
+Subject: ${host} ${status_message} - ${name//_/ } - ${chart}
+MIME-Version: 1.0
+Content-Type: multipart/alternative; boundary="multipart-boundary"
+${email_thread_headers}
+
+This is a MIME-encoded multipart message
+
+--multipart-boundary
+Content-Type: text/plain; encoding=${EMAIL_CHARSET}
+Content-Disposition: inline
+Content-Transfer-Encoding: 8bit
+
+${host} ${status_message}
+
+${alarm} ${info}
+${raised_for}
+
+Chart   : ${chart}
+Family  : ${family}
+Severity: ${severity}
+URL     : ${goto_url}
+Source  : ${src}
+Date    : ${date}
+Notification generated on ${this_host}
+
+--multipart-boundary
+Content-Type: text/html; encoding=${EMAIL_CHARSET}
+Content-Disposition: inline
+Content-Transfer-Encoding: 8bit
+
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; box-sizing: border-box; font-size: 14px; margin: 0; padding: 0;">
+<body style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 14px; width: 100% !important; min-height: 100%; line-height: 1.6; background: #f6f6f6; margin:0; padding: 0;">
+<table>
+    <tbody>
+    <tr>
+        <td style="vertical-align: top;" valign="top"></td>
+        <td width="700" style="vertical-align: top; display: block !important; max-width: 700px !important; clear: both !important; margin: 0 auto; padding: 0;" valign="top">
+            <div style="max-width: 700px; display: block; margin: 0 auto; padding: 20px;">
+                <table width="100%" cellpadding="0" cellspacing="0" style="background: #fff; border: 1px solid #e9e9e9;">
+                    <tbody>
+                    <tr>
+                        <td bgcolor="#eee" style="padding: 5px 20px 5px 20px; background-color: #eee;">
+                            <div style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 20px; color: #777; font-weight: bold;">netdata notification</div>
+                        </td>
+                    </tr>
+                    <tr>
+                        <td bgcolor="${color}" style="font-size: 16px; vertical-align: top; font-weight: 400; text-align: center; margin: 0; padding: 10px; color: #ffffff; background: ${color} !important; border: 1px solid ${color}; border-top-color: ${color};" align="center" valign="top">
+                            <h1 style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-weight: 400; margin: 0;">${host} ${status_message}</h1>
+                        </td>
+                    </tr>
+                    <tr>
+                        <td style="vertical-align: top;" valign="top">
+                            <div style="margin: 0; padding: 20px; max-width: 700px;">
+                                <table width="100%" cellpadding="0" cellspacing="0" style="max-width:700px">
+                                    <tbody>
+                                    <tr>
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding:0 0 20px;" align="left" valign="top">
+                                            <span>${chart}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Chart</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            <span><b>${alarm}</b>${info_html}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Alarm</span>
+                                        </td>
+                                    </tr>
+                                    <tr>
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            <span>${family}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Family</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            <span>${severity}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Severity</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top"><span>${date}</span>
+                                            <span>${raised_for_html}</span> <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Time</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;">
+                                            <a href="${goto_url}" style="font-size: 14px; color: #ffffff; text-decoration: none; line-height: 1.5; font-weight: bold; text-align: center; display: inline-block; text-transform: capitalize; background: #35568d; border-width: 1px; border-style: solid; border-color: #2b4c86; margin: 0; padding: 10px 15px;" target="_blank">View Netdata</a>
+                                        </td>
+                                    </tr>
+                                    <tr style="text-align: center; margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 11px; vertical-align: top; margin: 0; padding: 10px 0 0 0; color: #666666;" align="center" valign="bottom">The source of this alarm is line <code>${src}</code><br/>(alarms are configurable, edit this file to adapt the alarm to your needs)
+                                        </td>
+                                    </tr>
+                                    <tr style="text-align: center; margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 12px; vertical-align: top; margin:0; padding: 20px 0 0 0; color: #666666; border-top: 1px solid #f0f0f0;" align="center" valign="bottom">Sent by
+                                            <a href="https://mynetdata.io/" target="_blank">netdata</a>, the real-time performance and health monitoring, on <code>${this_host}</code>.
+                                        </td>
+                                    </tr>
+                                    </tbody>
+                                </table>
+                            </div>
+                        </td>
+                    </tr>
+                    </tbody>
+                </table>
+            </div>
+        </td>
+    </tr>
+    </tbody>
+</table>
+</body>
+</html>
+--multipart-boundary--
+EOF
+
+SENT_EMAIL=$?
+
+# -----------------------------------------------------------------------------
+# let netdata know
+
+if [   ${SENT_EMAIL}        -eq 0 \
+    -o ${SENT_PUSHOVER}     -eq 0 \
+    -o ${SENT_TELEGRAM}     -eq 0 \
+    -o ${SENT_SLACK}        -eq 0 \
+    -o ${SENT_MSTEAM}       -eq 0 \
+    -o ${SENT_ROCKETCHAT}   -eq 0 \
+    -o ${SENT_ALERTA}       -eq 0 \
+    -o ${SENT_FLOCK}        -eq 0 \
+    -o ${SENT_DISCORD}      -eq 0 \
+    -o ${SENT_TWILIO}       -eq 0 \
+    -o ${SENT_HIPCHAT}      -eq 0 \
+    -o ${SENT_MESSAGEBIRD}  -eq 0 \
+    -o ${SENT_KAVENEGAR}    -eq 0 \
+    -o ${SENT_PUSHBULLET}   -eq 0 \
+    -o ${SENT_KAFKA}        -eq 0 \
+    -o ${SENT_PD}           -eq 0 \
+    -o ${SENT_FLEEP}        -eq 0 \
+    -o ${SENT_IRC}          -eq 0 \
+    -o ${SENT_AWSSNS}       -eq 0 \
+    -o ${SENT_CUSTOM}       -eq 0 \
+    -o ${SENT_SYSLOG}       -eq 0 \
+    ]
+    then
+    # we did send something
+    exit 0
+fi
+
+# we did not send anything
+exit 1
diff --git a/health/notifications/alarm-test.sh b/health/notifications/alarm-test.sh
new file mode 100755
index 00000000..828aa756
--- /dev/null
+++ b/health/notifications/alarm-test.sh
@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2017 Costa Tsaousis <costa@tsaousis.gr>
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# Script to test alarm notifications for netdata
+
+dir="$(dirname "${0}")"
+"${dir}/alarm-notify.sh" test "${1}"
+exit $?
diff --git a/health/notifications/alerta/Makefile.inc b/health/notifications/alerta/Makefile.inc
new file mode 100644
index 00000000..32fa0894
--- /dev/null
+++ b/health/notifications/alerta/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	alerta/README.md \
+	alerta/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/alerta/README.md b/health/notifications/alerta/README.md
new file mode 100644
index 00000000..bbed23ba
--- /dev/null
+++ b/health/notifications/alerta/README.md
@@ -0,0 +1,236 @@
+# alerta.io notifications
+
+The alerta monitoring system is a tool used to consolidate and de-duplicate alerts from multiple sources for quick ‘at-a-glance’ visualisation. With just one system you can monitor alerts from many other monitoring tools on a single screen.
+
+![](http://docs.alerta.io/en/latest/_images/alerta-screen-shot-3.png)
+
+When receiving alerts from multiple sources you can quickly become overwhelmed. With Alerta any alert with the same environment and resource is considered a duplicate if it has the same severity. If it has a different severity it is correlated so that you only see the most recent one. Awesome.
+
+main site http://www.alerta.io
+
+We can send Netadata alarms to Alerta so yo can see in one place alerts coming from many Netdata hosts or also from a multihost Netadata configuration.\
+The big advantage over other notifications method is that you have in a main view all active alarms with only las state, but you can also search history.
+
+## Setting up an Alerta server with Ubuntu 16.04
+
+Here we will set a basic Alerta server to test it with Netdata alerts.\
+More advanced configurations are out os scope of this tutorial.
+
+source: http://alerta.readthedocs.io/en/latest/gettingstarted/tutorial-1-deploy-alerta.html
+
+I recommend to set up the server in a separated server, VM or container.\
+If you have other Nginx or Apache server in your organization, I recommend to proxy to this new server.
+
+Set us as root for easiest working
+```
+sudo su
+cd
+```
+
+Install Mongodb https://docs.mongodb.com/manual/tutorial/install-mongodb-on-ubuntu/
+```
+apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 2930ADAE8CAF5059EE73BB4B58712A2291FA4AD5
+echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/3.6 multiverse" | tee /etc/apt/sources.list.d/mongodb-org-3.6.list
+apt-get update
+apt-get install -y mongodb-org
+systemctl enable mongod
+systemctl start mongod
+systemctl status mongod
+```
+
+Install Nginx and Alerta uwsgi
+```
+apt-get install -y python-pip python-dev nginx
+pip install alerta-server uwsgi
+```
+
+Install web console
+```
+cd /var/www/html
+mkdir alerta
+cd alerta
+wget -q -O - https://github.com/alerta/angular-alerta-webui/tarball/master | tar zxf -
+mv alerta*/app/* .
+cd
+```
+## Services configuration
+
+Create a wsgi python file
+```
+nano /var/www/wsgi.py
+```
+fill with
+```
+from alerta import app
+```
+Create uWsgi configuration file
+```
+nano /etc/uwsgi.ini
+```
+fill with
+```
+[uwsgi]
+chdir = /var/www
+mount = /alerta/api=wsgi.py
+callable = app
+manage-script-name = true
+
+master = true
+processes = 5
+logger = syslog:alertad
+
+socket = /tmp/uwsgi.sock
+chmod-socket = 664
+uid = www-data
+gid = www-data
+vacuum = true
+
+die-on-term = true
+```
+Create a systemd configuration file
+```
+nano /etc/systemd/system/uwsgi.service
+```
+fill with
+```
+[Unit]
+Description=uWSGI service
+
+[Service]
+ExecStart=/usr/local/bin/uwsgi --ini /etc/uwsgi.ini
+
+[Install]
+WantedBy=multi-user.target
+```
+enable service
+```
+systemctl start uwsgi
+systemctl status uwsgi
+systemctl enable uwsgi
+```
+Configure nginx to serve Alerta as a uWsgi application on /alerta/api
+```
+nano /etc/nginx/sites-enabled/default
+```
+fill with
+```
+server {
+        listen 80 default_server;
+        listen [::]:80 default_server;
+
+        location /alerta/api { try_files $uri @alerta/api; }
+        location @alerta/api {
+            include uwsgi_params;
+            uwsgi_pass unix:/tmp/uwsgi.sock;
+            proxy_set_header Host $host:$server_port;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        }
+
+        location / {
+            root /var/www/html;
+        }
+}
+```
+restart nginx
+```
+service nginx restart
+```
+## Config web console
+```
+nano /var/www/html/config.js
+```
+fill with
+```
+'use strict';
+
+angular.module('config', [])
+  .constant('config', {
+    'endpoint'    : "/alerta/api",
+    'provider'    : "basic",
+    'colors'      : {},
+    'severity'    : {},
+    'audio'       : {}
+  });
+```
+
+## Config Alerta server
+
+source: http://alerta.readthedocs.io/en/latest/configuration.html
+
+Create a random string to use as SECRET_KEY
+```
+cat /dev/urandom | tr -dc A-Za-z0-9_\!\@\#\$\%\^\&\*\(\)-+= | head -c 32 && echo
+```
+will output something like
+```
+0pv8Bw7VKfW6avDAz_TqzYPme_fYV%7g
+```
+Edit alertad.conf
+```
+nano /etc/alertad.conf
+```
+fill with (take care about all single quotes)
+```
+BASE_URL='/alerta/api'
+AUTH_REQUIRED=True
+SECRET_KEY='0pv8Bw7VKfW6avDAz_TqzYPme_fYV%7g'
+ADMIN_USERS=['<here put you email for future login>']
+```
+
+restart
+```
+systemctl restart uwsgi
+```
+
+* go to console to http://yourserver/alerta/
+* go to Login -> Create an account
+* use your email for login so and administrative account will be created
+
+## create an API KEY
+
+You need an API KEY to send messages from any source.\
+To create an API KEY go to Configuration -> Api Keys\
+Then create a API KEY with write permisions.
+
+## configure Netdata to send alarms to Alerta
+
+On your system run:
+
+```
+/etc/netdata/edit-config health_alarm_notify.conf
+```
+
+and set
+
+```
+# enable/disable sending alerta notifications
+SEND_ALERTA="YES"
+
+# here set your alerta server API url
+# this is the API url you defined when installed Alerta server, 
+# it is the same for all users. Do not include last slash.
+ALERTA_WEBHOOK_URL="http://yourserver/alerta/api"
+
+# Login with an administrative user to you Alerta server and create an API KEY
+# with write permissions.
+ALERTA_API_KEY="you last created API KEY"
+
+# you can define environments in /etc/alertad.conf option ALLOWED_ENVIRONMENTS
+# standard environments are Production and Development
+# if a role's recipients are not configured, a notification will be send to
+# this Environment (empty = do not send a notification for unconfigured roles):
+DEFAULT_RECIPIENT_ALERTA="Production"
+```
+
+## Test alarms
+
+We can test alarms with standard
+```
+sudo su -s /bin/bash netdata
+/opt/netdata/netdata-plugins/plugins.d/alarm-notify.sh test
+exit
+```
+But the problem is that Netdata will send 3 alarms, and because last alarm is "CLEAR" you will not se them in main Alerta page, you need to select to see "closed" alarma in top-right lookup.
+
+A little change in alarm-notify.sh that let us test each state one by one will be useful.
\ No newline at end of file
diff --git a/health/notifications/awssns/Makefile.inc b/health/notifications/awssns/Makefile.inc
new file mode 100644
index 00000000..3d8e58ff
--- /dev/null
+++ b/health/notifications/awssns/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	awssns/README.md \
+	awssns/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/awssns/README.md b/health/notifications/awssns/README.md
new file mode 100644
index 00000000..d040d2d2
--- /dev/null
+++ b/health/notifications/awssns/README.md
@@ -0,0 +1,31 @@
+# Amazon SNS notifications
+
+As part of it's AWS suite, Amazon provides a notification broker service called 'Simple Notification Service' or SNS.  Amazon SNS works kind of similarly to Netdata's own notification system, allowing dispatch of a single notification to multiple subscribers of different types.  Among other things, SNS supports sending notifications to:
+
+* Email addresses.
+* Mobile Phones via SMS.
+* HTTP or HTTPS web hooks.
+* AWS Lambda functions.
+* AWS SQS queues.
+* Mobile applications via push notifications.
+
+To get this working, you will need:
+
+* The Amazon Web Services CLI tools.  Most distributions provide these with the package name `awscli`.
+* An actual home directory for the user you run Netdata as, instead of just using `/` as a home directory.  Setup of this is distribution specific.  `/var/lib/netdata` is the recommended directory (because the permissions will already be correct) if you are using a dedicated user (which is how most distributions work).
+* An Amazon SNS topic to send notifications to with one or more subscribers.  The [Getting Started](https://docs.aws.amazon.com/sns/latest/dg/GettingStarted.html) section of the Amazon SNS documentation covers the basics of how to set this up.  Make note of the Topic ARN when you create the topic.
+* While not mandatory, it is highly recommended to create a dedicated IAM user on your account for netdata to send notifications.  This user needs to have programmatic access, and should only allow access to SNS.  If you're really paranoid, you can create one for each system or group of systems.
+
+Once you have all the above, run the follwing command as the user netdata runs under:
+
+    aws configure
+
+THis will prompt you for the access key and secret key for accessing Amazon SNS (as well as the default region and output format, but you can leave those blank because we don't use them).
+
+Once that's done, you're ready to go and can specify the desired topic ARN as a recipient.
+
+Notes:
+
+   * Netdata's native email notification support is far better in almost all respects than it's support through Amazon SNS.  If you want email notifications, use the native support, not SNS.
+    * If you need to change the notification format for SNS notifications, you can do so by specifying the format in `AWSSNS_MESSAGE_FORMAT` in the configuration.  This variable supports all the same vairiables you can use in custom notifications.
+    * While Amazon SNS supports sending differently formatted messages for different delivery methods, netdata does not currently support this functionality.
\ No newline at end of file
diff --git a/health/notifications/discord/Makefile.inc b/health/notifications/discord/Makefile.inc
new file mode 100644
index 00000000..03d0339a
--- /dev/null
+++ b/health/notifications/discord/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	discord/README.md \
+	discord/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/discord/README.md b/health/notifications/discord/README.md
new file mode 100644
index 00000000..5889ea09
--- /dev/null
+++ b/health/notifications/discord/README.md
@@ -0,0 +1,44 @@
+# Discordapp.com notifications
+
+This is what you will get:
+
+![image](https://cloud.githubusercontent.com/assets/7321975/22215935/b49ede7e-e162-11e6-98d0-ae8541e6b92e.png)
+
+You need:
+
+1. The **incoming webhook URL** as given by Discord. Create a webhook by following the official [Discord documentation](https://support.discordapp.com/hc/en-us/articles/228383668-Intro-to-Webhooks). You can use the same on all your netdata servers (or you can have multiple if you like - your decision).
+2. One or more Discord channels to post the messages to.
+
+Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+###############################################################################
+# sending discord notifications
+
+# note: multiple recipients can be given like this:
+#                  "CHANNEL1 CHANNEL2 ..."
+
+# enable/disable sending discord notifications
+SEND_DISCORD="YES"
+
+# Create a webhook by following the official documentation -
+# https://support.discordapp.com/hc/en-us/articles/228383668-Intro-to-Webhooks
+DISCORD_WEBHOOK_URL="https://discordapp.com/api/webhooks/XXXXXXXXXXXXX/XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
+
+# if a role's recipients are not configured, a notification will be send to
+# this discord channel (empty = do not send a notification for unconfigured
+# roles):
+DEFAULT_RECIPIENT_DISCORD="alarms"
+
+```
+
+You can define multiple channels like this: `alarms systems`.
+You can give different channels per **role** using these (at the same file):
+
+```
+role_recipients_discord[sysadmin]="systems"
+role_recipients_discord[dba]="databases systems"
+role_recipients_discord[webmaster]="marketing development"
+```
+
+The keywords `systems`, `databases`, `marketing`, `development` are discordapp.com channels (they should already exist within your discord server).
diff --git a/health/notifications/email/Makefile.inc b/health/notifications/email/Makefile.inc
new file mode 100644
index 00000000..62dd18a6
--- /dev/null
+++ b/health/notifications/email/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	email/README.md \
+	email/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/email/README.md b/health/notifications/email/README.md
new file mode 100644
index 00000000..979790ad
--- /dev/null
+++ b/health/notifications/email/README.md
@@ -0,0 +1,31 @@
+# email notifications
+
+You need a working `sendmail` command for email alerts to work. Almost all MTAs provide a `sendmail` interface.
+
+netdata sends all emails as user `netdata`, so make sure your `sendmail` works for local users.
+
+email notifications look like this:
+
+![image](https://cloud.githubusercontent.com/assets/2662304/18407294/e9218c68-7714-11e6-8739-e4dd8a498252.png)
+
+## configuration
+
+To edit `health_alarm_notify.conf` on your system run `/etc/netdata/edit-config health_alarm_notify.conf`.
+
+You can configure recipients in [`/etc/netdata/health_alarm_notify.conf`](https://github.com/netdata/netdata/blob/99d44b7d0c4e006b11318a28ba4a7e7d3f9b3bae/conf.d/health_alarm_notify.conf#L101).
+
+You can also configure per role recipients [in the same file, a few lines below](https://github.com/netdata/netdata/blob/99d44b7d0c4e006b11318a28ba4a7e7d3f9b3bae/conf.d/health_alarm_notify.conf#L313).
+
+Changes to this file do not require netdata restart.
+
+You can test your configuration by issuing the commands:
+
+```sh
+# become user netdata
+sudo su -s /bin/bash netdata
+
+# send a test alarm
+/usr/libexec/netdata/plugins.d/alarm-notify.sh test [ROLE]
+```
+
+Where `[ROLE]` is the role you want to test. The default (if you don't give a `[ROLE]`) is `sysadmin`.
\ No newline at end of file
diff --git a/health/notifications/flock/Makefile.inc b/health/notifications/flock/Makefile.inc
new file mode 100644
index 00000000..fbff309a
--- /dev/null
+++ b/health/notifications/flock/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	flock/README.md \
+	flock/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/flock/README.md b/health/notifications/flock/README.md
new file mode 100644
index 00000000..33a545ea
--- /dev/null
+++ b/health/notifications/flock/README.md
@@ -0,0 +1,31 @@
+# flock.com notifications
+
+This is what you will get:
+
+
+![Flock](https://i.imgur.com/ok9bRzw.png)
+
+You need:
+
+The **incoming webhook URL** as given by flock.com. You can use the same on all your netdata servers (or you can have multiple if you like - your decision).
+
+Get them here: https://admin.flock.com/webhooks
+
+Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+###############################################################################
+# sending flock notifications
+
+# enable/disable sending pushover notifications
+SEND_FLOCK="YES"
+
+# Login to flock.com and create an incoming webhook.
+# You need only one for all your netdata servers.
+# Without it, netdata cannot send flock notifications.
+FLOCK_WEBHOOK_URL="https://api.flock.com/hooks/sendMessage/XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
+
+# if a role recipient is not configured, no notification will be sent
+DEFAULT_RECIPIENT_FLOCK="alarms"
+
+```
\ No newline at end of file
diff --git a/health/notifications/health_alarm_notify.conf b/health/notifications/health_alarm_notify.conf
new file mode 100755
index 00000000..9e72aac4
--- /dev/null
+++ b/health/notifications/health_alarm_notify.conf
@@ -0,0 +1,961 @@
+# Configuration for alarm notifications
+#
+# This configuration is used by: alarm-notify.sh
+# changes take effect immediately (the next alarm will use them).
+#
+# alarm-notify.sh can send:
+# - e-mails (using the sendmail command),
+# - push notifications to your mobile phone (pushover.net),
+# - messages to your slack team (slack.com),
+# - messages to your alerta server (alerta.io),
+# - messages to your flock team (flock.com),
+# - messages to your discord guild (discordapp.com),
+# - messages to your telegram chat / group chat (telegram.org)
+# - sms messages to your cell phone or any sms enabled device (twilio.com)
+# - sms messages to your cell phone or any sms enabled device (messagebird.com)
+# - notifications to users on pagerduty.com
+# - notifications to Amazon SNS topics (aws.amazon.com)
+# - messages to your irc channel on your selected network
+# - messages to a local or remote syslog daemon
+# - message to Microsoft Team (thru webhook)
+#
+# The 'to' line given at netdata alarms defines a *role*, so that many
+# people can be notified for each role.
+#
+# This file is a BASH script itself.
+#
+#
+#------------------------------------------------------------------------------
+# proxy configuration
+#
+# If you need to send curl based notifications (pushover, pushbullet, slack, alerta,
+# flock, discord, telegram) via a proxy, set these to your proxy address:
+#export http_proxy="http://10.0.0.1:3128/"
+#export https_proxy="http://10.0.0.1:3128/"
+
+
+#------------------------------------------------------------------------------
+# notifications images
+#
+# Images in notifications need to be downloaded from an Internet facing site.
+# To allow notification providers fetch the icons/images, by default we set
+# the URL of the global public netdata registry.
+# If you have an Internet facing netdata (or you have copied the images/ folder
+# of netdata to your web server), set its URL here, to fetch the notification
+# images from it.
+#images_base_url="http://my.public.netdata.server:19999"
+
+
+#------------------------------------------------------------------------------
+# date handling
+#
+# You can configure netdata alerts to send dates in any format you want.
+# This uses standard `date` command format strings.  See `man date` for
+# more info on what you can put in here.  Note that this has to start with a '+', otherwise it won't work.
+#
+# For ISO 8601 dates, use '+%FT%T%z'
+# For RFC 5322 dates, use '+%a, %d %b %Y %H:%M:%S %z'
+# For RFC 3339 dates, use '+%F %T%:z'
+# For RFC 1123 dates, use '+%a, %d %b %Y %H:%M:%S %Z'
+# For RFC 1036 dates, use '+%A, %d-%b-%y %H:%M:%S %Z'
+# For a reasonably local date and time (in that order), use '+%x %X'
+# For the old default behavior (compatible with ANSI C's asctime() function), leave this empty.
+date_format=''
+
+
+#------------------------------------------------------------------------------
+# external commands
+
+# The full path to the sendmail command.
+# If empty, the system $PATH will be searched for it.
+# If not found, email notifications will be disabled (silently).
+sendmail=""
+
+# The full path of the curl command.
+# If empty, the system $PATH will be searched for it.
+# If not found, most notifications will be silently disabled.
+curl=""
+
+# The full path of the nc command.
+# If empty, the system $PATH will be searched for it.
+# If not found, irc notifications will be silently disabled.
+nc=""
+
+# The full path of the logger command.
+# If empty, the system $PATH will be searched for it.
+# If not found, syslog notifications will be silently disabled.
+logger=""
+
+# The full path of the aws command.
+# If empty, the system $PATH will be searched for it.
+# If not found, Amazon SNS notifications will be silently disabled.
+aws=""
+
+#------------------------------------------------------------------------------
+# extra options for external commands
+#
+# In some cases, you may need to change what options get passed to an
+# external command.  Such cases are covered here.
+
+# Extra options to pass to curl.  In most cases, you shouldn't need to add anything
+# to this.  If you're having issues with HTTPS connections, you might try adding
+# '--insecure' here, but be warned that it will make it much easier for
+# third-parties to block notification delivery, and may allow disclosure
+# of potentially sensitive information.
+#curl_options="--insecure"
+
+# Extra options to pass to logger.  You shouldn't have to specify anything
+# here in most cases.
+#logger_options=""
+
+#------------------------------------------------------------------------------
+# NOTE ABOUT RECIPIENTS
+#
+# When you define recipients (all types):
+#
+#  - emails addresses
+#  - pushover user tokens
+#  - telegram chat ids
+#  - slack channels
+#  - alerta environment
+#  - flock rooms
+#  - discord channels
+#  - hipchat rooms
+#  - sms phone numbers
+#  - pagerduty.com (pd) services
+#  - irc channels
+#
+# You can append |critical to limit the notifications to be sent.
+#
+# In these examples, the first recipient receives all the alarms
+# while the second one receives only the critical ones:
+#
+#  email      : "user1@example.com user2@example.com|critical"
+#  pushover   : "2987343...9437837 8756278...2362736|critical"
+#  telegram   : "111827421 112746832|critical"
+#  slack      : "alarms disasters|critical"
+#  alerta     : "alarms disasters|critical"
+#  flock      : "alarms disasters|critical"
+#  discord    : "alarms disasters|critical"
+#  twilio     : "+15555555555 +17777777777|critical"
+#  messagebird: "+15555555555 +17777777777|critical"
+#  kavenegar  : "09155555555 09177777777|critical"
+#  pd         : "<pd_service_key_1> <pd_service_key_2>|critical"
+#  irc        : "<irc_channel_1> <irc_channel_2>|critical"
+#
+# If a recipient is set to empty string, the default recipient of the given
+# notification method (email, pushover, telegram, slack, alerta, etc) will be used.
+# To disable a notification, use the recipient called: disabled
+# This works for all notification methods (including the default recipients).
+
+
+#------------------------------------------------------------------------------
+# email global notification options
+
+# multiple recipients can be given like this:
+#              "admin1@example.com admin2@example.com ..."
+
+# the email address sending email notifications
+# the default is the system user netdata runs as (usually: netdata)
+# The following formats are supported:
+# EMAIL_SENDER="user@domain"
+# EMAIL_SENDER="User Name <user@domain>"
+# EMAIL_SENDER="'User Name' <user@domain>"
+# EMAIL_SENDER="\"User Name\" <user@domain>"
+EMAIL_SENDER=""
+
+# enable/disable sending emails
+SEND_EMAIL="YES"
+
+# if a role recipient is not configured, an email will be send to:
+DEFAULT_RECIPIENT_EMAIL="root"
+# to receive only critical alarms, set it to "root|critical"
+
+# Optionally specify the encoding to list in the Content-Type header.
+# This doesn't change what encoding the e-mail is sent with, just what
+# the headers say it was encoded as.
+# This shouldn't need to be changed as it will almost always be
+# autodetected from the environment.
+#EMAIL_CHARSET="UTF-8"
+
+# You can also have netdata add headers to the message that will
+# cause most e-mail clients to treat all notifications for a given
+# chart+alarm+host combination as a single thread.  This can help
+# simplify tracking of alarms, as it provides an easy wway for scripts
+# to corelate messages and also will cause most clients to group all the
+# messages together.  THis is off by default.
+#EMAIL_THREADING="YES"
+
+
+#------------------------------------------------------------------------------
+# pushover (pushover.net) global notification options
+
+# multiple recipients can be given like this:
+#                  "USERTOKEN1 USERTOKEN2 ..."
+
+# enable/disable sending pushover notifications
+SEND_PUSHOVER="YES"
+
+# Login to pushover.net to get your pushover app token.
+# You need only one for all your netdata servers (or you can have one for
+# each of your netdata - your call).
+# Without an app token, netdata cannot send pushover notifications.
+PUSHOVER_APP_TOKEN=""
+
+# if a role's recipients are not configured, a notification will be send to
+# this pushover user token (empty = do not send a notification for unconfigured
+# roles):
+DEFAULT_RECIPIENT_PUSHOVER=""
+
+
+#------------------------------------------------------------------------------
+# pushbullet (pushbullet.com) push notification options
+
+# multiple recipients can be given like this:
+#                  "user1@email.com user2@mail.com"
+
+# enable/disable sending pushbullet notifications
+SEND_PUSHBULLET="YES"
+
+# Signup and Login to pushbullet.com
+# To get your Access Token, go to https://www.pushbullet.com/#settings/account
+# Create a new access token and paste it below.
+# Then just set the recipients' emails.
+# Please note that the if the email in the DEFAULT_RECIPIENT_PUSHBULLET does
+# not have a pushbullet account, the pushbullet service will send an email
+# to that address instead.
+
+# Without an access token, netdata cannot send pushbullet notifications.
+PUSHBULLET_ACCESS_TOKEN=""
+DEFAULT_RECIPIENT_PUSHBULLET=""
+
+# Device iden of the sending device. Optional.
+PUSHBULLET_SOURCE_DEVICE=""
+
+
+#------------------------------------------------------------------------------
+# Twilio (twilio.com) SMS options
+
+# multiple recipients can be given like this:
+#                  "+15555555555 +17777777777"
+
+# enable/disable sending twilio SMS
+SEND_TWILIO="YES"
+
+# Signup for free trial and select a SMS capable Twilio Number
+# To get your Account SID and Token, go to https://www.twilio.com/console
+# Place your sid, token and number below.
+# Then just set the recipients' phone numbers.
+# The trial account is only allowed to use the number specified when set up.
+
+# Without an account sid and token, netdata cannot send Twilio text messages.
+TWILIO_ACCOUNT_SID=""
+TWILIO_ACCOUNT_TOKEN=""
+TWILIO_NUMBER=""
+DEFAULT_RECIPIENT_TWILIO=""
+
+
+#------------------------------------------------------------------------------
+# Messagebird (messagebird.com) SMS options
+
+# multiple recipients can be given like this:
+#                  "+15555555555 +17777777777"
+
+# enable/disable sending messagebird SMS
+SEND_MESSAGEBIRD="YES"
+
+# to get an access key, create a free account at https://www.messagebird.com
+# verify and activate the account (no CC info needed)
+# login to your account and enter your phonenumber to get some free credits
+# to get the API key, click on 'API' in the sidebar, then 'API Access (REST)' 
+# click 'Add access key' and fill in data (you want a live key to send SMS)
+
+# Without an access key, netdata cannot send Messagebird text messages.
+MESSAGEBIRD_ACCESS_KEY=""
+MESSAGEBIRD_NUMBER=""
+DEFAULT_RECIPIENT_MESSAGEBIRD=""
+
+
+#------------------------------------------------------------------------------
+# Kavenegar (Kavenegar.com) SMS options
+
+# multiple recipients can be given like this:
+#                  "09155555555 09177777777"
+
+# enable/disable sending kavenegar SMS
+SEND_KAVENEGAR="YES"
+
+# to get an access key, after selecting and purchasing your desired service
+# at http://kavenegar.com/pricing.html
+# login to your account, go to your dashboard and my account are
+# https://panel.kavenegar.com/Client/setting/account from API Key
+# copy your api key. You can generate new API Key too.
+# You can find and select kevenegar sender number from this place.
+
+# Without an API key, netdata cannot send KAVENEGAR text messages.
+KAVENEGAR_API_KEY=""
+KAVENEGAR_SENDER=""
+DEFAULT_RECIPIENT_KAVENEGAR=""
+
+
+#------------------------------------------------------------------------------
+# telegram (telegram.org) global notification options
+
+# To get your chat ID send the command /my_id to telegram bot @get_id.
+# Users also need to open a query with the bot (see below).
+
+# note: multiple recipients can be given like this:
+#                  "CHAT_ID_1 CHAT_ID_2 ..."
+
+# enable/disable sending telegram messages
+SEND_TELEGRAM="YES"
+
+# Contact the bot @BotFather to create a new bot and receive a bot token.
+# Without it, netdata cannot send telegram messages.
+TELEGRAM_BOT_TOKEN=""
+
+# If a role's recipients are not configured, a message will be send to
+# this chat id (empty = do not send a notification for unconfigured roles):
+DEFAULT_RECIPIENT_TELEGRAM=""
+
+
+#------------------------------------------------------------------------------
+# slack (slack.com) global notification options
+
+# multiple recipients can be given like this:
+#                  "CHANNEL1 CHANNEL2 ..."
+
+# enable/disable sending slack notifications
+SEND_SLACK="YES"
+
+# Login to slack.com and create an incoming webhook. You need only one for all
+# your netdata servers (or you can have one for each of your netdata).
+# Without it, netdata cannot send slack notifications.
+# Get yours from: https://api.slack.com/incoming-webhooks
+SLACK_WEBHOOK_URL=""
+
+# if a role's recipients are not configured, a notification will be send to
+# this slack channel (empty = do not send a notification for unconfigured
+# roles):
+DEFAULT_RECIPIENT_SLACK=""
+
+#------------------------------------------------------------------------------
+# Microsoft Team (office.com) global notification options
+# More details are available here regarding the payload syntax options : https://docs.microsoft.com/en-us/outlook/actionable-messages/message-card-reference
+# Online designer : https://acdesignerbeta.azurewebsites.net/
+# multiple recipients can be given like this:
+#                  "CHANNEL1 CHANNEL2 ..."
+
+# enable/disable sending team notifications
+SEND_MSTEAM="YES"
+
+# if a role's recipients are not configured, a notification will be send to
+# this slack channel (empty = do not send a notification for unconfigured
+# roles):
+# For team the channel name is encoded in the URI after ....IncomingWebhook/___/.....
+# This value will be replaced in the webhook value to publish to several channels in a same Team.
+# In order to get it working properly, you have to replace the value between [] ....IncomingWebhook/[___]/..... by "CHANNEL" string.
+DEFAULT_RECIPIENT_MSTEAM=""
+# Based on the way MS Teams is working, put the differents channels here like : "CHANNEL1 CHANNEL2 ..."
+# AT LEAST ONE CHANNEL IS MANDATORY
+MSTEAM_WEBHOOK_URL=""
+
+# Define the default color scheme for alert to MS Team - icon and color
+# Icons - go to https://emojipedia.org/bomb/
+MSTEAM_ICON_DEFAULT="♡"
+MSTEAM_ICON_CLEAR="💚"
+MSTEAM_ICON_WARNING="⚠️"
+MSTEAM_ICON_CRITICAL="🔥"
+
+# Colors
+MSTEAM_COLOR_DEFAULT="0076D7"
+MSTEAM_COLOR_CLEAR="65A677"
+MSTEAM_COLOR_WARNING="FFA500"
+MSTEAM_COLOR_CRITICAL="D93F3C"
+
+
+#------------------------------------------------------------------------------
+# rocketchat (rocket.chat) global notification options
+
+# multiple recipients can be given like this:
+#                  "CHANNEL1 CHANNEL2 ..."
+
+# enable/disable sending rocketchat notifications
+SEND_ROCKETCHAT="YES"
+
+# Login to rocket.chat and create an incoming webhook. You need only one for all
+# your netdata servers (or you can have one for each of your netdata).
+# Without it, netdata cannot send rocketchat notifications.
+ROCKETCHAT_WEBHOOK_URL=""
+
+# if a role's recipients are not configured, a notification will be send to
+# this rocketchat channel (empty = do not send a notification for unconfigured
+# roles):
+DEFAULT_RECIPIENT_ROCKETCHAT=""
+
+
+#------------------------------------------------------------------------------
+# alerta (alerta.io) global notification options
+
+# multiple recipients (Environments) can be given like this:
+#                  "Production Development ..."
+
+# enable/disable sending alerta notifications
+SEND_ALERTA="YES"
+
+# here set your alerta server API url
+# this is the API url you defined when installed Alerta server, 
+# it is the same for all users. Do not include last slash.
+# ALERTA_WEBHOOK_URL="https://<server>/alerta/api"
+ALERTA_WEBHOOK_URL=""
+
+# Login with an administrative user to you Alerta server and create an API KEY
+# with write permissions.
+ALERTA_API_KEY=""
+
+# you can define environments in /etc/alertad.conf option ALLOWED_ENVIRONMENTS
+# standard environments are Production and Development
+# if a role's recipients are not configured, a notification will be send to
+# this Environment (empty = do not send a notification for unconfigured roles):
+DEFAULT_RECIPIENT_ALERTA=""
+
+
+#------------------------------------------------------------------------------
+# flock (flock.com) global notification options
+
+# enable/disable sending flock notifications
+SEND_FLOCK="YES"
+
+# Login to flock.com and create an incoming webhook. You need only one for all
+# your netdata servers (or you can have one for each of your netdata).
+# Without it, netdata cannot send flock notifications.
+FLOCK_WEBHOOK_URL=""
+
+# if a role recipient is not configured, no notification will be sent
+DEFAULT_RECIPIENT_FLOCK=""
+
+
+#------------------------------------------------------------------------------
+# discord (discordapp.com) global notification options
+
+# multiple recipients can be given like this:
+#                  "CHANNEL1 CHANNEL2 ..."
+
+# enable/disable sending discord notifications
+SEND_DISCORD="YES"
+
+# Create a webhook by following the official documentation -
+# https://support.discordapp.com/hc/en-us/articles/228383668-Intro-to-Webhooks
+DISCORD_WEBHOOK_URL=""
+
+# if a role's recipients are not configured, a notification will be send to
+# this discord channel (empty = do not send a notification for unconfigured
+# roles):
+DEFAULT_RECIPIENT_DISCORD=""
+
+
+#------------------------------------------------------------------------------
+# hipchat global notification options
+
+# multiple recipients can be given like this:
+#                  "ROOM1 ROOM2 ..."
+
+# enable/disable sending hipchat notifications
+SEND_HIPCHAT="YES"
+
+# define hipchat server
+HIPCHAT_SERVER="api.hipchat.com"
+
+# api.hipchat.com authorization token
+# Without this, netdata cannot send hipchat notifications.
+HIPCHAT_AUTH_TOKEN=""
+
+# if a role's recipients are not configured, a notification will be send to
+# this hipchat room (empty = do not send a notification for unconfigured
+# roles):
+DEFAULT_RECIPIENT_HIPCHAT=""
+
+
+#------------------------------------------------------------------------------
+# kafka notification options
+
+# enable/disable sending kafka notifications
+SEND_KAFKA="YES"
+
+# The URL to POST kafka alarm data to. It should be the full URL.
+KAFKA_URL=""
+
+# The IP to be used in the kafka message as the sender.
+KAFKA_SENDER_IP=""
+
+
+#------------------------------------------------------------------------------
+# pagerduty.com notification options
+#
+# pagerduty.com notifications require the pagerduty agent to be installed and 
+# a "Generic API" pagerduty service.
+# https://www.pagerduty.com/docs/guides/agent-install-guide/
+
+# multiple recipients can be given like this:
+#              "<pd_service_key_1> <pd_service_key_2> ..."
+
+# enable/disable sending pagerduty notifications
+SEND_PD="YES"
+
+# if a role's recipients are not configured, a notification will be sent to
+# the "General API" pagerduty.com service that uses this service key.
+# (empty = do not send a notification for unconfigured roles):
+DEFAULT_RECIPIENT_PD=""
+
+
+#------------------------------------------------------------------------------
+# fleep notification options
+#
+# To send fleep.io notifications, you will need a webhook for the
+# conversation you want to send to.
+
+# Fleep recipients are specified as the last part of the webhook URL.
+# So, for a webhook URL of: https://fleep.io/hook/IJONmBuuSlWlkb_ttqyXJg, the
+# recipient name would be: 'IJONmBuuSlWlkb_ttqyXJg'.
+
+# enable/disable sending fleep notifications
+SEND_FLEEP="YES"
+
+# if a role's recipients are not configured, a notification will not be sent.
+# (empty = do not send a notification for unconfigured roles):
+DEFAULT_RECIPIENT_FLEEP=""
+
+# The user name to label the messages with.  If this is unset,
+# the hostname of the system the notification is for will be used.
+FLEEP_SENDER=""
+
+
+#------------------------------------------------------------------------------
+# irc notification options
+#
+# irc notifications require only the nc utility to be installed. 
+
+# multiple recipients can be given like this:
+#              "<irc_channel_1> <irc_channel_2> ..."
+
+# enable/disable sending irc notifications
+SEND_IRC="YES"
+
+# if a role's recipients are not configured, a notification will not be sent.
+# (empty = do not send a notification for unconfigured roles):
+DEFAULT_RECIPIENT_IRC=""
+
+# The irc network to which the recipients belong. It must be the full network.
+# e.g. "irc.freenode.net"
+IRC_NETWORK=""
+
+# The irc nickname which is required to send the notification. It must not be 
+# an already registered name as the connection's MODE is defined as a 'guest'.
+IRC_NICKNAME=""
+
+# The irc realname which is required in order to make the connection and is an
+# extra identifier.
+IRC_REALNAME=""
+
+
+#------------------------------------------------------------------------------
+# syslog notifications
+#
+# syslog notifications only need you to have a working logger command, which
+# should be the case on pretty much any Linux system.
+
+# enable/disable sending syslog notifications
+# NOTE: make sure you have everything else configured the way you want
+# it _before_ turning this on.
+SEND_SYSLOG="NO"
+
+# A note on log levels and facilities:
+#
+# The traditional UNIX syslog mechanism has the concept of both log
+# levels and facilities.  A log level indicates the relaitve severity of
+# the message, while a facility specifies a generic source for the message
+# (for example, the `mail` facility is where sendmail and postfix log
+# their messages).  All major syslog daemons have the ability to filter
+# messages based on both log level and facility, and can often also make
+# routing decisions for messages based on both factors.
+#
+# On Linux, the eight log levels in decreasing order of severity are:
+# emerg, alert, crit, err, warning, notice, info, debug
+#
+# By default, warnings will be logged at the warning level, critical
+# alerts at the crit level, and clear notifications at the invo level.
+#
+# And the 19 facilities you can log to are:
+# auth, authpriv, cron, daemon, ftp, lpr, mail, news, syslog, user,
+# uucp, local0, local1, local2, local3, local4, local5, local6, and local7
+#
+# By default, netdata alerts will be logged to the local6 facility.
+#
+# Depending on your distribution, this means that either all your
+# netdata alerts will by default end up in the main system log (usually
+# /var/log/messages), or they won't be logged to a file at all.
+# Neither of these are likely to be what you actually want, but any
+# configuration to change that needs to happen in the syslog daemon
+# configuration, not here.
+
+# This controls which facility is used by defalt for logging.  Defaults
+# to local6.
+SYSLOG_FACILITY=''
+
+# If a role's recipients are not configured, use the following.
+# (empty = do not send a notification for unconfigured roles)
+#
+# The recipient format for syslog uses the following format:
+# [[facility.level][@host[:port]]/]prefix
+#
+# `prefix` gets appended to the front of all log messages generated for
+# that recipient.  The prefix is mandatory.
+# 'host' and 'port' can be used to specify a remote syslog server to
+# send messages to.  Leave these out if you want messages to be delivered
+# locally.  'host' can be either a hostname or an IP address.
+# IPv6 addresses must have square around them.
+# 'facility' and 'level' are used to override the default logging facility
+# set above and the log level.  If one is specified, both must be present.
+#
+# For example, to send messages with a 'netdata' prefix to a syslog
+# daemon listening on port 514 on 'loghost' using the daemon facility and
+# notice log level:
+# DEFAULT_RECIPIENT_SYSLOG='daemon.notice@loghost:514/netdata'
+#
+DEFAULT_RECIPIENT_SYSLOG="netdata"
+
+#------------------------------------------------------------------------------
+# Amazon SNS notifications
+#
+# This method requires potentially complex manual configuration.  See the
+# netdata wiki for information on what is needed.
+
+# enable/disable sending Amazon SNS notifications
+SEND_AWSSNS="YES"
+
+# Specify a template for the Amazon SNS notifications.  This supports
+# the same set of variables that are usable in the `custom_sender()`
+# function in the custom notification configuration below.
+#
+AWSSNS_MESSAGE_FORMAT="${status} on ${host} at ${date}: ${chart} ${value_string}"
+
+# If a role's recipients are not configured, use the following.
+# (empty = do not send a notification for unconfigured roles)
+#
+# Recipients for AWS SNS notifications are specified as topic ARN's.
+#
+DEFAULT_RECIPIENT_AWSSNS=""
+
+#------------------------------------------------------------------------------
+# custom notifications
+#
+
+# enable/disable sending custom notifications
+SEND_CUSTOM="YES"
+
+# if a role's recipients are not configured, use the following.
+# (empty = do not send a notification for unconfigured roles)
+DEFAULT_RECIPIENT_CUSTOM=""
+
+# The custom_sender() is a custom function to do whatever you need to do
+custom_sender() {
+    # variables you can use:
+    # ${host}               the host generated this event
+    # ${url_host}           same as ${host} but URL encoded
+    # ${unique_id}          the unique id of this event
+    # ${alarm_id}           the unique id of the alarm that generated this event
+    # ${event_id}           the incremental id of the event, for this alarm id
+    # ${when}               the timestamp this event occurred
+    # ${name}               the name of the alarm, as given in netdata health.d entries
+    # ${url_name}           same as ${name} but URL encoded
+    # ${chart}              the name of the chart (type.id)
+    # ${url_chart}          same as ${chart} but URL encoded
+    # ${family}             the family of the chart
+    # ${url_family}         same as ${family} but URL encoded
+    # ${status}             the current status : REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
+    # ${old_status}         the previous status: REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
+    # ${value}              the current value of the alarm
+    # ${old_value}          the previous value of the alarm
+    # ${src}                the line number and file the alarm has been configured
+    # ${duration}           the duration in seconds of the previous alarm state
+    # ${duration_txt}       same as ${duration} for humans
+    # ${non_clear_duration} the total duration in seconds this is/was non-clear
+    # ${non_clear_duration_txt} same as ${non_clear_duration} for humans
+    # ${units}              the units of the value
+    # ${info}               a short description of the alarm
+    # ${value_string}       friendly value (with units)
+    # ${old_value_string}   friendly old value (with units)
+    # ${image}              the URL of an image to represent the status of the alarm
+    # ${color}              a color in #AABBCC format for the alarm
+    # ${goto_url}           the URL the user can click to see the netdata dashboard
+
+    # these are more human friendly:
+    # ${alarm}              like "name = value units"
+    # ${status_message}     like "needs attention", "recovered", "is critical"
+    # ${severity}           like "Escalated to CRITICAL", "Recovered from WARNING"
+    # ${raised_for}         like "(alarm was raised for 10 minutes)"
+
+    # example human readable SMS
+    local msg="${host} ${status_message}: ${alarm} ${raised_for}"
+
+    # limit it to 160 characters and encode it for use in a URL
+    urlencode "${msg:0:160}" >/dev/null; msg="${REPLY}"
+
+    # a space separated list of the recipients to send alarms to
+    to="${1}"
+
+    info "not sending custom notification to ${to}, for ${status} of '${host}.${chart}.${name}' - custom_sender() is not configured."
+}
+
+
+###############################################################################
+# RECIPIENTS PER ROLE
+
+# -----------------------------------------------------------------------------
+# generic system alarms
+# CPU, disks, network interfaces, entropy, etc
+
+role_recipients_email[sysadmin]="${DEFAULT_RECIPIENT_EMAIL}"
+
+role_recipients_pushover[sysadmin]="${DEFAULT_RECIPIENT_PUSHOVER}"
+
+role_recipients_pushbullet[sysadmin]="${DEFAULT_RECIPIENT_PUSHBULLET}"
+
+role_recipients_telegram[sysadmin]="${DEFAULT_RECIPIENT_TELEGRAM}"
+
+role_recipients_slack[sysadmin]="${DEFAULT_RECIPIENT_SLACK}"
+
+role_recipients_alerta[sysadmin]="${DEFAULT_RECIPIENT_ALERTA}"
+
+role_recipients_flock[sysadmin]="${DEFAULT_RECIPIENT_FLOCK}"
+
+role_recipients_discord[sysadmin]="${DEFAULT_RECIPIENT_DISCORD}"
+
+role_recipients_hipchat[sysadmin]="${DEFAULT_RECIPIENT_HIPCHAT}"
+
+role_recipients_twilio[sysadmin]="${DEFAULT_RECIPIENT_TWILIO}"
+
+role_recipients_messagebird[sysadmin]="${DEFAULT_RECIPIENT_MESSAGEBIRD}"
+
+role_recipients_kavenegar[sysadmin]="${DEFAULT_RECIPIENT_KAVENEGAR}"
+
+role_recipients_pd[sysadmin]="${DEFAULT_RECIPIENT_PD}"
+
+role_recipients_fleep[sysadmin]="${DEFAULT_RECIPIENT_FLEEP}"
+
+role_recipients_irc[sysadmin]="${DEFAULT_RECIPIENT_IRC}"
+
+role_recipients_syslog[sysadmin]="${DEFAULT_RECIPIENT_SYSLOG}"
+
+role_recipients_awssns[sysadmin]="${DEFAULT_RECIPIENT_AWSSNS}"
+
+role_recipients_custom[sysadmin]="${DEFAULT_RECIPIENT_CUSTOM}"
+
+role_recipients_msteam[sysadmin]="${DEFAULT_RECIPIENT_MSTEAM}"
+
+# -----------------------------------------------------------------------------
+# DNS related alarms
+
+role_recipients_email[domainadmin]="${DEFAULT_RECIPIENT_EMAIL}"
+
+role_recipients_pushover[domainadmin]="${DEFAULT_RECIPIENT_PUSHOVER}"
+
+role_recipients_pushbullet[domainadmin]="${DEFAULT_RECIPIENT_PUSHBULLET}"
+
+role_recipients_telegram[domainadmin]="${DEFAULT_RECIPIENT_TELEGRAM}"
+
+role_recipients_slack[domainadmin]="${DEFAULT_RECIPIENT_SLACK}"
+
+role_recipients_alerta[domainadmin]="${DEFAULT_RECIPIENT_ALERTA}"
+
+role_recipients_flock[domainadmin]="${DEFAULT_RECIPIENT_FLOCK}"
+
+role_recipients_discord[domainadmin]="${DEFAULT_RECIPIENT_DISCORD}"
+
+role_recipients_hipchat[domainadmin]="${DEFAULT_RECIPIENT_HIPCHAT}"
+
+role_recipients_twilio[domainadmin]="${DEFAULT_RECIPIENT_TWILIO}"
+
+role_recipients_messagebird[domainadmin]="${DEFAULT_RECIPIENT_MESSAGEBIRD}"
+
+role_recipients_kavenegar[domainadmin]="${DEFAULT_RECIPIENT_KAVENEGAR}"
+
+role_recipients_pd[domainadmin]="${DEFAULT_RECIPIENT_PD}"
+
+role_recipients_fleep[domainadmin]="${DEFAULT_RECIPIENT_FLEEP}"
+
+role_recipients_irc[domainadmin]="${DEFAULT_RECIPIENT_IRC}"
+
+role_recipients_syslog[domainadmin]="${DEFAULT_RECIPIENT_SYSLOG}"
+
+role_recipients_awssns[domainadmin]="${DEFAULT_RECIPIENT_AWSSNS}"
+
+role_recipients_custom[domainadmin]="${DEFAULT_RECIPIENT_CUSTOM}"
+
+role_recipients_msteam[domainadmin]="${DEFAULT_RECIPIENT_MSTEAM}"
+
+# -----------------------------------------------------------------------------
+# database servers alarms
+# mysql, redis, memcached, postgres, etc
+
+role_recipients_email[dba]="${DEFAULT_RECIPIENT_EMAIL}"
+
+role_recipients_pushover[dba]="${DEFAULT_RECIPIENT_PUSHOVER}"
+
+role_recipients_pushbullet[dba]="${DEFAULT_RECIPIENT_PUSHBULLET}"
+
+role_recipients_telegram[dba]="${DEFAULT_RECIPIENT_TELEGRAM}"
+
+role_recipients_slack[dba]="${DEFAULT_RECIPIENT_SLACK}"
+
+role_recipients_alerta[dba]="${DEFAULT_RECIPIENT_ALERTA}"
+
+role_recipients_flock[dba]="${DEFAULT_RECIPIENT_FLOCK}"
+
+role_recipients_discord[dba]="${DEFAULT_RECIPIENT_DISCORD}"
+
+role_recipients_hipchat[dba]="${DEFAULT_RECIPIENT_HIPCHAT}"
+
+role_recipients_twilio[dba]="${DEFAULT_RECIPIENT_TWILIO}"
+
+role_recipients_messagebird[dba]="${DEFAULT_RECIPIENT_MESSAGEBIRD}"
+
+role_recipients_kavenegar[dba]="${DEFAULT_RECIPIENT_KAVENEGAR}"
+
+role_recipients_pd[dba]="${DEFAULT_RECIPIENT_PD}"
+
+role_recipients_fleep[dba]="${DEFAULT_RECIPIENT_FLEEP}"
+
+role_recipients_irc[dba]="${DEFAULT_RECIPIENT_IRC}"
+
+role_recipients_syslog[dba]="${DEFAULT_RECIPIENT_SYSLOG}"
+
+role_recipients_awssns[dba]="${DEFAULT_RECIPIENT_AWSSNS}"
+
+role_recipients_custom[dba]="${DEFAULT_RECIPIENT_CUSTOM}"
+
+role_recipients_msteam[dba]="${DEFAULT_RECIPIENT_MSTEAM}"
+
+# -----------------------------------------------------------------------------
+# web servers alarms
+# apache, nginx, lighttpd, etc
+
+role_recipients_email[webmaster]="${DEFAULT_RECIPIENT_EMAIL}"
+
+role_recipients_pushover[webmaster]="${DEFAULT_RECIPIENT_PUSHOVER}"
+
+role_recipients_pushbullet[webmaster]="${DEFAULT_RECIPIENT_PUSHBULLET}"
+
+role_recipients_telegram[webmaster]="${DEFAULT_RECIPIENT_TELEGRAM}"
+
+role_recipients_slack[webmaster]="${DEFAULT_RECIPIENT_SLACK}"
+
+role_recipients_alerta[webmaster]="${DEFAULT_RECIPIENT_ALERTA}"
+
+role_recipients_flock[webmaster]="${DEFAULT_RECIPIENT_FLOCK}"
+
+role_recipients_discord[webmaster]="${DEFAULT_RECIPIENT_DISCORD}"
+
+role_recipients_hipchat[webmaster]="${DEFAULT_RECIPIENT_HIPCHAT}"
+
+role_recipients_twilio[webmaster]="${DEFAULT_RECIPIENT_TWILIO}"
+
+role_recipients_messagebird[webmaster]="${DEFAULT_RECIPIENT_MESSAGEBIRD}"
+
+role_recipients_kavenegar[webmaster]="${DEFAULT_RECIPIENT_KAVENEGAR}"
+
+role_recipients_pd[webmaster]="${DEFAULT_RECIPIENT_PD}"
+
+role_recipients_fleep[webmaster]="${DEFAULT_RECIPIENT_FLEEP}"
+
+role_recipients_irc[webmaster]="${DEFAULT_RECIPIENT_IRC}"
+
+role_recipients_syslog[webmaster]="${DEFAULT_RECIPIENT_SYSLOG}"
+
+role_recipients_awssns[webmaster]="${DEFAULT_RECIPIENT_AWSSNS}"
+
+role_recipients_custom[webmaster]="${DEFAULT_RECIPIENT_CUSTOM}"
+
+role_recipients_msteam[webmaster]="${DEFAULT_RECIPIENT_MSTEAM}"
+
+# -----------------------------------------------------------------------------
+# proxy servers alarms
+# squid, etc
+
+role_recipients_email[proxyadmin]="${DEFAULT_RECIPIENT_EMAIL}"
+
+role_recipients_pushover[proxyadmin]="${DEFAULT_RECIPIENT_PUSHOVER}"
+
+role_recipients_pushbullet[proxyadmin]="${DEFAULT_RECIPIENT_PUSHBULLET}"
+
+role_recipients_telegram[proxyadmin]="${DEFAULT_RECIPIENT_TELEGRAM}"
+
+role_recipients_slack[proxyadmin]="${DEFAULT_RECIPIENT_SLACK}"
+
+role_recipients_alerta[proxyadmin]="${DEFAULT_RECIPIENT_ALERTA}"
+
+role_recipients_flock[proxyadmin]="${DEFAULT_RECIPIENT_FLOCK}"
+
+role_recipients_discord[proxyadmin]="${DEFAULT_RECIPIENT_DISCORD}"
+
+role_recipients_hipchat[proxyadmin]="${DEFAULT_RECIPIENT_HIPCHAT}"
+
+role_recipients_twilio[proxyadmin]="${DEFAULT_RECIPIENT_TWILIO}"
+
+role_recipients_messagebird[proxyadmin]="${DEFAULT_RECIPIENT_MESSAGEBIRD}"
+
+role_recipients_kavenegar[proxyadmin]="${DEFAULT_RECIPIENT_KAVENEGAR}"
+
+role_recipients_pd[proxyadmin]="${DEFAULT_RECIPIENT_PD}"
+
+role_recipients_fleep[proxyadmin]="${DEFAULT_RECIPIENT_FLEEP}"
+
+role_recipients_irc[proxyadmin]="${DEFAULT_RECIPIENT_IRC}"
+
+role_recipients_syslog[proxyadmin]="${DEFAULT_RECIPIENT_SYSLOG}"
+
+role_recipients_awssns[porxyadmin]="${DEFAULT_RECIPIENT_AWSSNS}"
+
+role_recipients_custom[proxyadmin]="${DEFAULT_RECIPIENT_CUSTOM}"
+
+role_recipients_msteam[proxyadmin]="${DEFAULT_RECIPIENT_MSTEAM}"
+
+# -----------------------------------------------------------------------------
+# peripheral devices
+# UPS, photovoltaics, etc
+
+role_recipients_email[sitemgr]="${DEFAULT_RECIPIENT_EMAIL}"
+
+role_recipients_pushover[sitemgr]="${DEFAULT_RECIPIENT_PUSHOVER}"
+
+role_recipients_pushbullet[sitemgr]="${DEFAULT_RECIPIENT_PUSHBULLET}"
+
+role_recipients_telegram[sitemgr]="${DEFAULT_RECIPIENT_TELEGRAM}"
+
+role_recipients_slack[sitemgr]="${DEFAULT_RECIPIENT_SLACK}"
+
+role_recipients_alerta[sitemgr]="${DEFAULT_RECIPIENT_ALERTA}"
+
+role_recipients_flock[sitemgr]="${DEFAULT_RECIPIENT_FLOCK}"
+
+role_recipients_discord[sitemgr]="${DEFAULT_RECIPIENT_DISCORD}"
+
+role_recipients_hipchat[sitemgr]="${DEFAULT_RECIPIENT_HIPCHAT}"
+
+role_recipients_twilio[sitemgr]="${DEFAULT_RECIPIENT_TWILIO}"
+
+role_recipients_messagebird[sitemgr]="${DEFAULT_RECIPIENT_MESSAGEBIRD}"
+
+role_recipients_kavenegar[sitemgr]="${DEFAULT_RECIPIENT_KAVENEGAR}"
+
+role_recipients_pd[sitemgr]="${DEFAULT_RECIPIENT_PD}"
+
+role_recipients_fleep[sitemgr]="${DEFAULT_RECIPIENT_FLEEP}"
+
+role_recipients_syslog[sitemgr]="${DEFAULT_RECIPIENT_SYSLOG}"
+
+role_recipients_awssns[sitemgr]="${DEFAULT_RECIPIENT_AWSSNS}"
+
+role_recipients_custom[sitemgr]="${DEFAULT_RECIPIENT_CUSTOM}"
+
+role_recipients_msteam[sitemgr]="${DEFAULT_RECIPIENT_MSTEAM}"
diff --git a/health/notifications/health_email_recipients.conf b/health/notifications/health_email_recipients.conf
new file mode 100644
index 00000000..f56c6c64
--- /dev/null
+++ b/health/notifications/health_email_recipients.conf
@@ -0,0 +1,2 @@
+# OBSOLETE FILE
+# REPLACED WITH health_alarm_notify.conf
diff --git a/health/notifications/irc/Makefile.inc b/health/notifications/irc/Makefile.inc
new file mode 100644
index 00000000..23be7210
--- /dev/null
+++ b/health/notifications/irc/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	irc/README.md \
+	irc/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/irc/README.md b/health/notifications/irc/README.md
new file mode 100644
index 00000000..ece879fe
--- /dev/null
+++ b/health/notifications/irc/README.md
@@ -0,0 +1,73 @@
+# IRC notifications
+
+This is what you will get:
+
+IRCCloud web client:  
+![image](https://user-images.githubusercontent.com/31221999/36793487-3735673e-1ca6-11e8-8880-d1d8b6cd3bc0.png)
+
+Irssi terminal client:
+![image](https://user-images.githubusercontent.com/31221999/36793486-3713ada6-1ca6-11e8-8c12-70d956ad801e.png)
+
+
+You need:
+1. The `nc` utility. If you do not set the path, netdata will search for it in your system `$PATH`.
+
+Set the path for `nc` in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+#------------------------------------------------------------------------------
+# external commands
+#
+# The full path of the nc command.
+# If empty, the system $PATH will be searched for it.
+# If not found, irc notifications will be silently disabled.
+nc="/usr/bin/nc"
+
+```
+
+2. Αn `IRC_NETWORK` to which your preffered channels belong to.   
+3. One or more channels ( `DEFAULT_RECIPIENT_IRC` ) to post the messages to.   
+4. An `IRC_NICKNAME` and an `IRC_REALNAME` to identify in IRC.   
+
+Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+#------------------------------------------------------------------------------
+# irc notification options
+#
+# irc notifications require only the nc utility to be installed. 
+
+# multiple recipients can be given like this:
+#              "<irc_channel_1> <irc_channel_2> ..."
+
+# enable/disable sending irc notifications
+SEND_IRC="YES"
+
+# if a role's recipients are not configured, a notification will not be sent.
+# (empty = do not send a notification for unconfigured roles):
+DEFAULT_RECIPIENT_IRC="#system-alarms"
+
+# The irc network to which the recipients belong. It must be the full network.
+IRC_NETWORK="irc.freenode.net"
+
+# The irc nickname which is required to send the notification. It must not be 
+# an already registered name as the connection's MODE is defined as a 'guest'.
+IRC_NICKNAME="netdata-alarm-user"
+
+# The irc realname which is required in order to make the connection and is an
+# extra identifier.
+IRC_REALNAME="netdata-user"
+
+```
+
+You can define multiple channels like this: `#system-alarms #networking-alarms`.  
+You can also filter the notifications like this: `#system-alarms|critical`.  
+You can give different channels per **role** using these (at the same file):  
+
+```
+role_recipients_irc[sysadmin]="#user-alarms #networking-alarms #system-alarms"
+role_recipients_irc[dba]="#databases-alarms"
+role_recipients_irc[webmaster]="#networking-alarms"
+```
+
+The keywords `#user-alarms`, `#networking-alarms`, `#system-alarms`, `#databases-alarms` are irc channels which belong to the specified IRC network.
\ No newline at end of file
diff --git a/health/notifications/kavenegar/Makefile.inc b/health/notifications/kavenegar/Makefile.inc
new file mode 100644
index 00000000..6a17c348
--- /dev/null
+++ b/health/notifications/kavenegar/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	kavenegar/README.md \
+	kavenegar/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/kavenegar/README.md b/health/notifications/kavenegar/README.md
new file mode 100644
index 00000000..e59ad4d4
--- /dev/null
+++ b/health/notifications/kavenegar/README.md
@@ -0,0 +1,39 @@
+# Kavenegar notifications
+
+[Kavenegar](https://www.kavenegar.com/) as service for software developers, based in Iran, provides send and receive SMS, calling voice by using its APIs.
+
+Will look like this on your Android device:
+
+![image](https://cloud.githubusercontent.com/assets/17090999/20034652/620b6100-a39b-11e6-96af-4f83b8e830e2.png)
+
+You will need:
+
+1. Signup and Login to kavenegar.com
+2. Get your APIKEY and Sender from http://panel.kavenegar.com/client/setting/account
+3. Fill in KAVENEGAR_API_KEY="" KAVENEGAR_SENDER=""
+4. Add the recipient phone numbers to DEFAULT_RECIPIENT_KAVENEGAR=""
+
+Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+###############################################################################
+# Kavenegar (kavenegar.com) SMS options
+
+# multiple recipients can be given like this:
+#                 "09155555555 09177777777"
+
+# enable/disable sending kavenegar SMS
+SEND_KAVENEGAR="YES"
+
+# to get an access key, after selecting and purchasing your desired service
+# at http://kavenegar.com/pricing.html
+# login to your account, go to your dashboard and my account are
+# https://panel.kavenegar.com/Client/setting/account from API Key
+# copy your api key. You can generate new API Key too.
+# You can find and select kevenegar sender number from this place.
+
+# Without an API key, netdata cannot send KAVENEGAR text messages.
+KAVENEGAR_API_KEY=""
+KAVENEGAR_SENDER=""
+DEFAULT_RECIPIENT_KAVENEGAR=""
+```
\ No newline at end of file
diff --git a/health/notifications/messagebird/Makefile.inc b/health/notifications/messagebird/Makefile.inc
new file mode 100644
index 00000000..8132fecc
--- /dev/null
+++ b/health/notifications/messagebird/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	messagebird/README.md \
+	messagebird/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/messagebird/README.md b/health/notifications/messagebird/README.md
new file mode 100644
index 00000000..e09ba5d3
--- /dev/null
+++ b/health/notifications/messagebird/README.md
@@ -0,0 +1,38 @@
+
+Will look like this on your Android device:
+
+![image](https://cloud.githubusercontent.com/assets/17090999/20034652/620b6100-a39b-11e6-96af-4f83b8e830e2.png)
+
+You will need:
+
+1. Signup and Login to messagebird.com
+2. Pick an SMS capable number after sign up to get some free credits
+3. Go to <https://www.messagebird.com/app/settings/developers/access>
+4. Create a new access key under 'API ACCESS (REST)' (you will want a live key)
+3. Fill in MESSAGEBIRD_ACCESS_KEY="XXXXXXXX" MESSAGEBIRD_NUMBER="+XXXXXXXXXXX"
+4. Add the recipient phone numbers to DEFAULT_RECIPIENT_MESSAGEBIRD="+XXXXXXXXXXX"
+
+Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+#------------------------------------------------------------------------------
+# Messagebird (messagebird.com) SMS options
+
+# multiple recipients can be given like this:
+#                  "+15555555555 +17777777777"
+
+# enable/disable sending messagebird SMS
+SEND_MESSAGEBIRD="YES"
+
+# to get an access key, create a free account at https://www.messagebird.com
+# verify and activate the account (no CC info needed)
+# login to your account and enter your phonenumber to get some free credits
+# to get the API key, click on 'API' in the sidebar, then 'API Access (REST)' 
+# click 'Add access key' and fill in data (you want a live key to send SMS)
+
+# Without an access key, netdata cannot send Messagebird text messages.
+MESSAGEBIRD_ACCESS_KEY="XXXXXXXX"
+MESSAGEBIRD_NUMBER="XXXXXXX"
+DEFAULT_RECIPIENT_MESSAGEBIRD="XXXXXXX"
+
+```
diff --git a/health/notifications/pagerduty/Makefile.inc b/health/notifications/pagerduty/Makefile.inc
new file mode 100644
index 00000000..6012d20e
--- /dev/null
+++ b/health/notifications/pagerduty/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	pagerduty/README.md \
+	pagerduty/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/pagerduty/README.md b/health/notifications/pagerduty/README.md
new file mode 100644
index 00000000..e35051fd
--- /dev/null
+++ b/health/notifications/pagerduty/README.md
@@ -0,0 +1,34 @@
+
+[PagerDuty](https://www.pagerduty.com/company/) is the enterprise incident resolution service that integrates with ITOps and DevOps monitoring stacks to improve operational reliability and agility. From enriching and aggregating events to correlating them into incidents, PagerDuty streamlines the incident management process by reducing alert noise and resolution times.
+
+Here is an example of a PagerDuty dashboard with netdata notifications:
+
+![PagerDuty dashboard with netdata notifications](https://cloud.githubusercontent.com/assets/19278582/21233877/b466a08a-c2a5-11e6-8d66-ee6eed43818f.png)
+
+To have netdata send notifications to PagerDuty, you'll first need to set up a PagerDuty `Generic API` service and install the PagerDuty agent on the host running netdata.  See the following guide for details:
+
+https://www.pagerduty.com/docs/guides/agent-install-guide/
+
+During the setup of the `Generic API` PagerDuty service, you'll obtain a `pagerduty service key`.  Keep this **service key** handy.
+
+Once the PagerDuty agent is installed on your host and can send notifications from your host to your `Generic API` service on PagerDuty, add the **service key** to `DEFAULT_RECIPIENT_PD` in `health_alarm_notify.conf`:
+
+```
+#------------------------------------------------------------------------------
+# pagerduty.com notification options
+#
+# pagerduty.com notifications require the pagerduty agent to be installed and 
+# a "Generic API" pagerduty service.
+# https://www.pagerduty.com/docs/guides/agent-install-guide/
+
+# multiple recipients can be given like this:
+#              "<pd_service_key_1> <pd_service_key_2> ..."
+
+# enable/disable sending pagerduty notifications
+SEND_PD="YES"
+
+# if a role's recipients are not configured, a notification will be sent to
+# the "General API" pagerduty.com service that uses this service key.
+# (empty = do not send a notification for unconfigured roles):
+DEFAULT_RECIPIENT_PD="<service key>"
+```
diff --git a/health/notifications/pushbullet/Makefile.inc b/health/notifications/pushbullet/Makefile.inc
new file mode 100644
index 00000000..693a0ffb
--- /dev/null
+++ b/health/notifications/pushbullet/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	pushbullet/README.md \
+	pushbullet/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/pushbullet/README.md b/health/notifications/pushbullet/README.md
new file mode 100644
index 00000000..827d9301
--- /dev/null
+++ b/health/notifications/pushbullet/README.md
@@ -0,0 +1,42 @@
+$ PushBullet notifications
+
+Will look like this on your browser:
+![image](https://cloud.githubusercontent.com/assets/4300670/19109636/278b1c0c-8aee-11e6-8a09-7fc94fdbfec8.png)
+
+And like this on your Android device:
+
+
+![image](https://cloud.githubusercontent.com/assets/4300670/19109635/278a1dde-8aee-11e6-9984-0bc87a13312d.png)
+
+You will need:
+
+1. Signup and Login to pushbullet.com
+2. Get your Access Token, go to https://www.pushbullet.com/#settings/account and create a new one
+3. Fill in the PUSHBULLET_ACCESS_TOKEN with that value
+4. Add the recipient emails to DEFAULT_RECIPIENT_PUSHBULLET
+!!PLEASE NOTE THAT IF THE RECIPIENT DOES NOT HAVE A PUSHBULLET ACCOUNT, PUSHBULLET SERVICE WILL SEND AN EMAIL!!
+
+Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+###############################################################################
+# pushbullet (pushbullet.com) push notification options
+
+# multiple recipients can be given like this:
+#                  "user1@email.com user2@mail.com"
+
+# enable/disable sending pushbullet notifications
+SEND_PUSHBULLET="YES"
+
+# Signup and Login to pushbullet.com
+# To get your Access Token, go to https://www.pushbullet.com/#settings/account
+# And create a new access token
+# Then just set the recipients emails
+# Please note that the if the email in the DEFAULT_RECIPIENT_PUSHBULLET does
+# not have a pushbullet account, the pushbullet service will send an email
+# to that address instead
+
+# Without an access token, netdata cannot send pushbullet notifications.
+PUSHBULLET_ACCESS_TOKEN="o.Sometokenhere"
+DEFAULT_RECIPIENT_PUSHBULLET="admin1@example.com admin3@somemail.com"
+```
\ No newline at end of file
diff --git a/health/notifications/pushover/Makefile.inc b/health/notifications/pushover/Makefile.inc
new file mode 100644
index 00000000..926ac7c3
--- /dev/null
+++ b/health/notifications/pushover/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	pushover/README.md \
+	pushover/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/pushover/README.md b/health/notifications/pushover/README.md
new file mode 100644
index 00000000..28498169
--- /dev/null
+++ b/health/notifications/pushover/README.md
@@ -0,0 +1,17 @@
+
+# PushOver notifications
+
+pushover.net allows you to receive push notifications on your mobile phone. The service seems free for up to 7.500 messages per month.
+
+netdata will send warning messages with priority `0` and critical messages with priority `1`. pushover.net allows you to select do-not-disturb hours. The way this is configured, critical notifications will ring and vibrate your phone, even during the do-not-disturb-hours. All other notifications will be delivered silently.
+
+You need:
+
+1. APP TOKEN. You can use the same on all your netdata servers.
+2. USER TOKEN for each user you are going to send notifications to. This is the actual recipient of the notification.
+
+The configuration is like above (slack messages).
+
+pushover.net notifications look like this:
+
+![image](https://cloud.githubusercontent.com/assets/2662304/18407319/839c10c4-7715-11e6-92c0-12f8215128d3.png)
\ No newline at end of file
diff --git a/health/notifications/rocketchat/Makefile.inc b/health/notifications/rocketchat/Makefile.inc
new file mode 100644
index 00000000..a6fc5d57
--- /dev/null
+++ b/health/notifications/rocketchat/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	rocketchat/README.md \
+	rocketchat/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/rocketchat/README.md b/health/notifications/rocketchat/README.md
new file mode 100644
index 00000000..70c69867
--- /dev/null
+++ b/health/notifications/rocketchat/README.md
@@ -0,0 +1,46 @@
+# Rocket.Chat notifications
+
+This is what you will get:
+![Netdata on RocketChat](https://i.imgur.com/Zu4t3j3.png)
+You need:
+
+1. The **incoming webhook URL** as given by RocketChat. You can use the same on all your netdata servers (or you can have multiple if you like - your decision).
+2. One or more channels to post the messages to.
+
+Get them here: https://rocket.chat/docs/administrator-guides/integrations/index.html#how-to-create-a-new-incoming-webhook
+
+Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+#------------------------------------------------------------------------------
+# rocketchat (rocket.chat) global notification options
+
+# multiple recipients can be given like this:
+#                  "CHANNEL1 CHANNEL2 ..."
+
+# enable/disable sending rocketchat notifications
+SEND_ROCKETCHAT="YES"
+
+# Login to rocket.chat and create an incoming webhook. You need only one for all
+# your netdata servers (or you can have one for each of your netdata).
+# Without it, netdata cannot send rocketchat notifications.
+ROCKETCHAT_WEBHOOK_URL="<your_incoming_webhook_url>"
+
+# if a role's recipients are not configured, a notification will be send to
+# this rocketchat channel (empty = do not send a notification for unconfigured
+# roles).
+DEFAULT_RECIPIENT_ROCKETCHAT="monitoring_alarms"
+
+```
+
+You can define multiple channels like this: `alarms systems`.
+You can give different channels per **role** using these (at the same file):
+
+```
+role_recipients_rocketchat[sysadmin]="systems"
+role_recipients_rocketchat[dba]="databases systems"
+role_recipients_rocketchat[webmaster]="marketing development"
+```
+
+The keywords `systems`, `databases`, `marketing`, `development` are RocketChat channels (they should already exist).
+Both public and private channels can be used, even if they differ from the channel configured in yout RocketChat incomming webhook.
diff --git a/health/notifications/slack/Makefile.inc b/health/notifications/slack/Makefile.inc
new file mode 100644
index 00000000..955a8c7a
--- /dev/null
+++ b/health/notifications/slack/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	slack/README.md \
+	slack/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/slack/README.md b/health/notifications/slack/README.md
new file mode 100644
index 00000000..45be4519
--- /dev/null
+++ b/health/notifications/slack/README.md
@@ -0,0 +1,45 @@
+# Slack.com notifications
+
+This is what you will get:
+![image](https://cloud.githubusercontent.com/assets/2662304/18407116/bbd0fee6-7710-11e6-81cf-58c0defaee2b.png)
+
+You need:
+
+1. The **incoming webhook URL** as given by slack.com. You can use the same on all your netdata servers (or you can have multiple if you like - your decision).
+2. One or more channels to post the messages to.
+
+Get them here: https://api.slack.com/incoming-webhooks
+
+Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+###############################################################################
+# sending slack notifications
+
+# note: multiple recipients can be given like this:
+#                  "CHANNEL1 CHANNEL2 ..."
+
+# enable/disable sending pushover notifications
+SEND_SLACK="YES"
+
+# Login to slack.com and create an incoming webhook.
+# You need only one for all your netdata servers.
+# Without it, netdata cannot send slack notifications.
+SLACK_WEBHOOK_URL="https://hooks.slack.com/services/XXXXXXXX/XXXXXXXX/XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
+
+# if a role recipient is not configured, a notification will be send to
+# this slack channel:
+DEFAULT_RECIPIENT_SLACK="alarms"
+
+```
+
+You can define multiple channels like this: `alarms systems`.
+You can give different channels per **role** using these (at the same file):
+
+```
+role_recipients_slack[sysadmin]="systems"
+role_recipients_slack[dba]="databases systems"
+role_recipients_slack[webmaster]="marketing development"
+```
+
+The keywords `systems`, `databases`, `marketing`, `development` are slack.com channels (they should already exist in slack).
diff --git a/health/notifications/syslog/Makefile.inc b/health/notifications/syslog/Makefile.inc
new file mode 100644
index 00000000..1792b9d9
--- /dev/null
+++ b/health/notifications/syslog/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	syslog/README.md \
+	syslog/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/syslog/README.md b/health/notifications/syslog/README.md
new file mode 100644
index 00000000..fcc2466a
--- /dev/null
+++ b/health/notifications/syslog/README.md
@@ -0,0 +1,23 @@
+# syslog notifications
+
+You need a working `logger` command for this to work.  This is the case on pretty much every Linux system in existence, and most BSD systems.
+
+Logged messages will look like this:
+
+    netdata WARNING on hostname at Tue Apr 3 09:00:00 EDT 2018: disk_space._ out of disk space time = 5h
+
+## configuration
+
+System log targets are configured as recipients in [`/etc/netdata/health_alarm_notify.conf`](https://github.com/netdata/netdata/blob/36bedc044584dea791fd29455bdcd287c3306cb2/conf.d/health_alarm_notify.conf#L534) (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`).
+
+You can als configure per-role targets in the same file a bit further down.
+
+Targets are defined as follows:
+
+    [[facility.level][@host[:port]]/]prefix
+
+`prefix` defines what the log messages are prefixed with.  By default, all lines are prefixed with 'netdata'.
+
+The `facility` and `level` are the standard syslog facility and level options, for more info on them see your local `logger` and `syslog` documentation.  By default, netdata will log to the `local6` facility, with a log level dependent on the type of message (`crit` for CRITICAL, `warning` for WARNING, and `info` for everything else).
+
+You can configure sending directly to remote log servers by specifying a host (and optionally a port).  However, this has a somewhat high overhead, so it is much preferred to use your local syslog daemon to handle the forwarding of messages to remote systems (pretty much all of them allow at least simple forwarding, and most of the really popular ones support complex queueing and routing of messages to remote log servers).
diff --git a/health/notifications/telegram/Makefile.inc b/health/notifications/telegram/Makefile.inc
new file mode 100644
index 00000000..003996ba
--- /dev/null
+++ b/health/notifications/telegram/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	telegram/README.md \
+	telegram/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/telegram/README.md b/health/notifications/telegram/README.md
new file mode 100644
index 00000000..cd52fe19
--- /dev/null
+++ b/health/notifications/telegram/README.md
@@ -0,0 +1,19 @@
+# Telegram.org notifications
+
+[Telegram](https://telegram.org/) is a messaging app with a focus on speed and security, it’s super-fast, simple and free. You can use Telegram on all your devices at the same time — your messages sync seamlessly across any number of your phones, tablets or computers.
+
+With Telegram, you can send messages, photos, videos and files of any type (doc, zip, mp3, etc), as well as create groups for up to 30,000 people or channels for broadcasting to unlimited audiences. You can write to your phone contacts and find people by their usernames. As a result, Telegram is like SMS and email combined — and can take care of all your personal or business messaging needs.
+
+netdata will send warning messages without vibration.
+
+You need:
+
+1. A bot token. To get one, contact the [@BotFather](https://t.me/BotFather) bot and send the command `/newbot`. Follow the instructions.
+2. A chat id for every chat you want to send messages to. Contact the [@myidbot](https://t.me/myidbot) bot and send the command `/getid` to get your personal chat id or invite him into a group and issue the same command to get the group chat id.
+3. Start a conversation with your bot or invite him into a group you want to sent messages to.
+
+See slack for configuration.
+
+Telegram messages look like this:
+
+![image](https://fb.hash.works/ytl/preview.jpg)
diff --git a/health/notifications/twilio/Makefile.inc b/health/notifications/twilio/Makefile.inc
new file mode 100644
index 00000000..5bd00a21
--- /dev/null
+++ b/health/notifications/twilio/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	twilio/README.md \
+	twilio/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/twilio/README.md b/health/notifications/twilio/README.md
new file mode 100644
index 00000000..ab3dd3c0
--- /dev/null
+++ b/health/notifications/twilio/README.md
@@ -0,0 +1,40 @@
+# Twilio.com notifications
+
+Will look like this on your Android device:
+
+![image](https://cloud.githubusercontent.com/assets/17090999/20034652/620b6100-a39b-11e6-96af-4f83b8e830e2.png)
+
+You will need:
+
+1. Signup and Login to twilio.com
+2. Pick an SMS capable number during sign up.
+3. Get your SID, and Token from <https://www.twilio.com/console>
+3. Fill in TWILIO_ACCOUNT_SID="XXXXXXXX" TWILIO_ACCOUNT_TOKEN="XXXXXXXXX" TWILIO_NUMBER="+XXXXXXXXXXX"
+4. Add the recipient phone numbers to DEFAULT_RECIPIENT_TWILIO="+XXXXXXXXXXX"
+
+!!PLEASE NOTE THAT IF YOUR ACCOUNT IS A TRIAL ACCOUNT YOU WILL ONLY BE ABLE TO SEND NOTIFICATIONS TO THE NUMBER YOU SIGNED UP WITH
+
+Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
+
+```
+###############################################################################
+# Twilio (twilio.com) SMS options
+
+# multiple recipients can be given like this:
+#                  "+15555555555 +17777777777"
+
+# enable/disable sending twilio SMS
+SEND_TWILIO="YES"
+
+# Signup for free trial and select a SMS capable Twilio Number
+# To get your Account SID and Token, go to https://www.twilio.com/console
+# Place your sid, token and number below.
+# Then just set the recipients' phone numbers.
+# The trial account is only allowed to use the number specified when set up.
+
+# Without an account sid and token, netdata cannot send Twilio text messages.
+TWILIO_ACCOUNT_SID="xxxxxxxxx"
+TWILIO_ACCOUNT_TOKEN="xxxxxxxxxx"
+TWILIO_NUMBER="xxxxxxxxxxx"
+DEFAULT_RECIPIENT_TWILIO="+15555555555"
+```
diff --git a/health/notifications/web/Makefile.inc b/health/notifications/web/Makefile.inc
new file mode 100644
index 00000000..89082431
--- /dev/null
+++ b/health/notifications/web/Makefile.inc
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_noinst_DATA += \
+	web/README.md \
+	web/Makefile.inc \
+	$(NULL)
+
diff --git a/health/notifications/web/README.md b/health/notifications/web/README.md
new file mode 100644
index 00000000..ba7dac1f
--- /dev/null
+++ b/health/notifications/web/README.md
@@ -0,0 +1,6 @@
+# Dashboard notifications
+
+The netdata dashboard shows HTML notifications, when it is open.
+
+Such web notifications look like this:
+![image](https://cloud.githubusercontent.com/assets/2662304/18407279/82bac6a6-7714-11e6-847e-c2e84eeacbfb.png)