Adding upstream version 1.17.0.upstream/1.17.0

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

24 files changed, 3297 insertions, 204 deletions

diff --git a/health/notifications/Makefile.in b/health/notifications/Makefile.in
new file mode 100644
index 000000000..16a89b584
--- /dev/null
+++ b/health/notifications/Makefile.in
@@ -0,0 +1,821 @@
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+	smstools3/Makefile.inc $(NULL) syslog/README.md \
+	syslog/Makefile.inc $(NULL) telegram/README.md \
+	telegram/Makefile.inc $(NULL) twilio/README.md \
+	twilio/Makefile.inc $(NULL) web/README.md web/Makefile.inc \
+	$(NULL) custom/README.md custom/Makefile.inc $(NULL)
+all: all-am
+
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+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu health/notifications/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu health/notifications/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
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+	esac;
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+	@$(NORMAL_INSTALL)
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+	if test -n "$$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 } \
+	    if ($$2 == $$4) { files[d] = files[d] " " $$1; \
+	      if (++n[d] == $(am__install_max)) { \
+		print "f", d, files[d]; n[d] = 0; files[d] = "" } } \
+	    else { print "f", d "/" $$4, $$1 } } \
+	  END { for (d in files) print "f", d, files[d] }' | \
+	while read type dir files; do \
+	     if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	     test -z "$$files" || { \
+	       echo " $(INSTALL_SCRIPT) $$files '$(DESTDIR)$(pluginsdir)$$dir'"; \
+	       $(INSTALL_SCRIPT) $$files "$(DESTDIR)$(pluginsdir)$$dir" || exit $$?; \
+	     } \
+	; done
+
+uninstall-dist_pluginsSCRIPTS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_plugins_SCRIPTS)'; test -n "$(pluginsdir)" || exit 0; \
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+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(libconfigdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(libconfigdir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
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+	done | $(am__base_list) | \
+	while read files; do \
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+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(libconfigdir)" || exit $$?; \
+	done
+
+uninstall-dist_libconfigDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(dist_libconfig_DATA)'; test -n "$(libconfigdir)" || list=; \
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+ctags CTAGS:
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+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 $$file; done | \
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+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
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+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
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+	    fi; \
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+	      find "$(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
+check-am: all-am
+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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+	    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 $(CLEANFILES)
+
+distclean-generic:
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+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
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+	pdf-am ps ps-am tags-am uninstall uninstall-am \
+	uninstall-dist_libconfigDATA uninstall-dist_pluginsSCRIPTS
+
+.PRECIOUS: Makefile
+
+.in:
+	if sed \
+		-e 's#[@]localstatedir_POST@#$(localstatedir)#g' \
+		-e 's#[@]sbindir_POST@#$(sbindir)#g' \
+		-e 's#[@]pluginsdir_POST@#$(pluginsdir)#g' \
+		-e 's#[@]configdir_POST@#$(configdir)#g' \
+		-e 's#[@]libconfigdir_POST@#$(libconfigdir)#g' \
+		-e 's#[@]cachedir_POST@#$(cachedir)#g' \
+		-e 's#[@]registrydir_POST@#$(registrydir)#g' \
+		-e 's#[@]varlibdir_POST@#$(varlibdir)#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
index 8c7ab66f7..a0065729a 100644
--- a/health/notifications/README.md
+++ b/health/notifications/README.md
@@ -7,9 +7,9 @@ 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
+-   to multiple recipients
+-   using multiple notification methods
+-   filtering severity per recipient
 
 It uses **roles**. For example `sysadmin`, `webmaster`, `dba`, etc.
 
@@ -23,23 +23,23 @@ 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`.
+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:
+-   settings per notification method:
 
-   all notification methods except email, require some configuration
-   (i.e. API keys, tokens, destination rooms, channels, etc).
+     all notification methods except email, require some configuration
+     (i.e. API keys, tokens, destination rooms, channels, etc).
 
-2. **recipients** per **role** per **notification method**
+2.  **recipients** per **role** per **notification method**
 
 ## Testing Notifications
 
@@ -62,8 +62,10 @@ export NETDATA_ALARM_NOTIFY_DEBUG=1
 Note that in versions before 1.16, the plugins.d directory may be installed in a different location in certain OSs (e.g. under `/usr/lib/netdata`). You can always find the location of the alarm-notify.sh script in `netdata.conf`.
 
 If you need to dig even deeper, you can trace the execution with `bash -x`. Note that in test mode, alarm-notify.sh calls itself with many more arguments. So first do
- ```sh
- bash -x /usr/libexec/netdata/plugins.d/alarm-notify.sh test
- ```
+
+```sh
+bash -x /usr/libexec/netdata/plugins.d/alarm-notify.sh test
+```
+
  Then look in the output for the alarm-notify.sh calls and run the one you want to trace with `bash -x`. 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/alarm-notify.sh b/health/notifications/alarm-notify.sh
new file mode 100644
index 000000000..745a5257f
--- /dev/null
+++ b/health/notifications/alarm-notify.sh
@@ -0,0 +1,2298 @@
+#!/usr/bin/env bash
+#shellcheck source=/dev/null disable=SC2086,SC2154
+
+# 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
+#  - prowlapp.com notifications by @Ferroin
+#  - custom notifications by @ktsaou
+#  - syslog messages by @Ferroin
+#  - Microsoft Team notification by @tioumen
+#  - RocketChat notifications by @Hermsi1337 #3777
+
+# -----------------------------------------------------------------------------
+# testing notifications
+
+if { [ "${1}" = "test" ] || [ "${2}" = "test" ]; } && [ "${#}" -le 2 ]; then
+	if [ "${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" "evaluated expression" "expression variable values" 0 0
+		#shellcheck disable=SC2181
+		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 code ret
+		out=$(mktemp /tmp/netdata-health-alarm-notify-XXXXXXXX)
+		code=$(${curl} ${curl_options} --write-out "%{http_code}" --output "${out}" --silent --show-error "${@}")
+		ret=$?
+		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 $?
+}
+
+# -----------------------------------------------------------------------------
+# List of all the notification mechanisms we support.
+# Used in a couple of places to write more compact code.
+
+method_names="
+email
+pushover
+pushbullet
+telegram
+slack
+alerta
+flock
+discord
+hipchat
+twilio
+messagebird
+pd
+fleep
+syslog
+custom
+msteam
+kavenegar
+prowl
+awssns
+rocketchat
+sms
+"
+
+# -----------------------------------------------------------------------------
+# 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)
+if [ ${BASH_VERSINFO[0]} -lt 4 ]; then
+	fatal "BASH version 4 or later is required (this is ${BASH_VERSION})."
+fi
+
+# -----------------------------------------------------------------------------
+# defaults to allow running this script by hand
+
+[ -z "${NETDATA_USER_CONFIG_DIR}" ] && NETDATA_USER_CONFIG_DIR="/etc/netdata"
+[ -z "${NETDATA_STOCK_CONFIG_DIR}" ] && NETDATA_STOCK_CONFIG_DIR="/usr/lib/netdata/conf.d"
+[ -z "${NETDATA_CACHE_DIR}" ] && NETDATA_CACHE_DIR="/var/cache/netdata"
+[ -z "${NETDATA_REGISTRY_URL}" ] && NETDATA_REGISTRY_URL="https://registry.my-netdata.io"
+[ -z "${NETDATA_REGISTRY_CLOUD_BASE_URL}" ] && NETDATA_REGISTRY_CLOUD_BASE_URL="https://netdata.cloud"
+
+# -----------------------------------------------------------------------------
+# parse command line parameters
+
+if [ ${1} = "unittest" ]; then
+	unittest=1        # enable unit testing mode
+	roles="${2}"      # the role that should be used for unit testing
+	cfgfile="${3}"    # the location of the config file to use for unit testing
+	status="${4}"     # the current status : REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
+	old_status="${5}" # the previous status: REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
+else
+	roles="${1}"               # the roles that should be notified for this event
+	args_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)
+	# shellcheck disable=SC2034
+	# variable is unused, but https://github.com/netdata/netdata/pull/5164#discussion_r255572947
+	old_value_string="${20}"   # friendly old value (with units), previously named "old_value_string"
+	calc_expression="${21}"    # contains the expression that was evaluated to trigger the alarm
+	calc_param_values="${22}"  # the values of the parameters in the expression, at the time of the evaluation
+	total_warnings="${23}"     # Total number of alarms in WARNING state
+	total_critical="${24}"     # Total number of alarms in CRITICAL state
+fi
+
+# -----------------------------------------------------------------------------
+# find a suitable hostname to use, if netdata did not supply a hostname
+
+if [ -z ${args_host} ]; then
+	this_host=$(hostname -s 2>/dev/null)
+	host="${this_host}"
+	args_host="${this_host}"
+else
+	host="${args_host}"
+fi
+
+# -----------------------------------------------------------------------------
+# screen statuses we don't need to send a notification
+
+# don't do anything if this is not WARNING, CRITICAL or CLEAR
+if [ "${status}" != "WARNING" ] && [ "${status}" != "CRITICAL" ] && [ "${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 [ "${clear_alarm_always}" != "YES" ] && [ "${old_status}" != "WARNING" ] && [ "${old_status}" != "CRITICAL" ] && [ "${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=""
+
+# hostname handling
+use_fqdn="NO"
+
+# needed commands
+# if empty they will be searched in the system path
+curl=
+sendmail=
+
+# enable / disable features
+for method_name in ${method_names^^}; do
+	declare SEND_${method_name}="YES"
+	declare DEFAULT_RECIPIENT_${method_name}
+done
+
+for method_name in ${method_names}; do
+	declare -A role_recipients_${method_name}
+done
+
+# slack configs
+SLACK_WEBHOOK_URL=
+
+# Microsoft Team configs
+MSTEAM_WEBHOOK_URL=
+
+# rocketchat configs
+ROCKETCHAT_WEBHOOK_URL=
+
+# alerta configs
+ALERTA_WEBHOOK_URL=
+ALERTA_API_KEY=
+
+# flock configs
+FLOCK_WEBHOOK_URL=
+
+# discord configs
+DISCORD_WEBHOOK_URL=
+
+# pushover configs
+PUSHOVER_APP_TOKEN=
+
+# pushbullet configs
+PUSHBULLET_ACCESS_TOKEN=
+PUSHBULLET_SOURCE_DEVICE=
+
+# twilio configs
+TWILIO_ACCOUNT_SID=
+TWILIO_ACCOUNT_TOKEN=
+TWILIO_NUMBER=
+
+# hipchat configs
+HIPCHAT_SERVER=
+HIPCHAT_AUTH_TOKEN=
+
+# messagebird configs
+MESSAGEBIRD_ACCESS_KEY=
+MESSAGEBIRD_NUMBER=
+
+# kavenegar configs
+KAVENEGAR_API_KEY=
+KAVENEGAR_SENDER=
+
+# telegram configs
+TELEGRAM_BOT_TOKEN=
+
+# kafka configs
+SEND_KAFKA="YES"
+KAFKA_URL=
+KAFKA_SENDER_IP=
+
+# pagerduty.com configs
+PD_SERVICE_KEY=
+
+# fleep.io configs
+FLEEP_SENDER="${host}"
+
+# Amazon SNS configs
+AWSSNS_MESSAGE_FORMAT=
+
+# syslog configs
+SYSLOG_FACILITY=
+
+# email configs
+EMAIL_SENDER=
+EMAIL_CHARSET=$(locale charmap 2>/dev/null)
+EMAIL_THREADING=
+EMAIL_PLAINTEXT_ONLY=
+
+# irc configs
+IRC_NICKNAME=
+IRC_REALNAME=
+IRC_NETWORK=
+
+# load the stock and user configuration files
+# these will overwrite the variables above
+
+if [ ${unittest} ]; then
+	if source "${cfgfile}"; then
+		error "Failed to load requested config file."
+		exit 1
+	fi
+else
+	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 "${CONFIG}" || error "Failed to load config file '${CONFIG}'."
+		else
+			warning "Cannot find file '${CONFIG}'."
+		fi
+	done
+fi
+
+# 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 ${EMAIL_CHARSET} ]; then
+	EMAIL_CHARSET="UTF-8"
+fi
+
+# If we've been asked to use FQDN's for the URL's in the alarm, do so,
+# unless we're sending an alarm for a slave system which we can't get the
+# FQDN of easily.
+if [ "${use_fqdn}" = "YES" ] && [ "${host}" = "$(hostname -s 2>/dev/null)" ]; then
+	host="$(hostname -f 2>/dev/null)"
+fi
+
+# -----------------------------------------------------------------------------
+# filter a recipient based on alarm event severity
+
+filter_recipient_by_criticality() {
+	local method="${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 ${method}: BLOCK: recipient should not receive this notification"
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# verify the delivery methods supported
+
+# check slack
+[ -z "${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 "${TWILIO_ACCOUNT_TOKEN}" ] || [ -z "${TWILIO_ACCOUNT_SID}" ] || [ -z "${TWILIO_NUMBER}" ]; } && SEND_TWILIO="NO"
+
+# check hipchat
+[ -z "${HIPCHAT_AUTH_TOKEN}" ] && SEND_HIPCHAT="NO"
+
+# check messagebird
+{ [ -z "${MESSAGEBIRD_ACCESS_KEY}" ] || [ -z "${MESSAGEBIRD_NUMBER}" ]; } && SEND_MESSAGEBIRD="NO"
+
+# check kavenegar
+{ [ -z "${KAVENEGAR_API_KEY}" ] || [ -z "${KAVENEGAR_SENDER}" ]; } && SEND_KAVENEGAR="NO"
+
+# check telegram
+[ -z "${TELEGRAM_BOT_TOKEN}" ] && SEND_TELEGRAM="NO"
+
+# check kafka
+{ [ -z "${KAFKA_URL}" ] || [ -z "${KAFKA_SENDER_IP}" ]; } && SEND_KAFKA="NO"
+
+# check irc
+[ -z "${IRC_NETWORK}" ] && SEND_IRC="NO"
+
+# check fleep
+#shellcheck disable=SC2153
+{ [ -z "${FLEEP_SERVER}" ] || [ -z "${FLEEP_SENDER}" ]; } && SEND_FLEEP="NO"
+
+if [ "${SEND_PUSHOVER}" = "YES" ] ||
+	[ "${SEND_SLACK}" = "YES" ] ||
+	[ "${SEND_ROCKETCHAT}" = "YES" ] ||
+	[ "${SEND_ALERTA}" = "YES" ] ||
+	[ "${SEND_PD}" = "YES" ] ||
+	[ "${SEND_FLOCK}" = "YES" ] ||
+	[ "${SEND_DISCORD}" = "YES" ] ||
+	[ "${SEND_HIPCHAT}" = "YES" ] ||
+	[ "${SEND_TWILIO}" = "YES" ] ||
+	[ "${SEND_MESSAGEBIRD}" = "YES" ] ||
+	[ "${SEND_KAVENEGAR}" = "YES" ] ||
+	[ "${SEND_TELEGRAM}" = "YES" ] ||
+	[ "${SEND_PUSHBULLET}" = "YES" ] ||
+	[ "${SEND_KAFKA}" = "YES" ] ||
+	[ "${SEND_FLEEP}" = "YES" ] ||
+	[ "${SEND_PROWL}" = "YES" ] ||
+	[ "${SEND_CUSTOM}" = "YES" ] ||
+	[ "${SEND_MSTEAM}" = "YES" ]; then
+	# if we need curl, check for the curl command
+	if [ -z "${curl}" ]; then
+		curl="$(command -v curl 2>/dev/null)"
+	fi
+	if [ -z "${curl}" ]; then
+		error "Cannot find curl command in the system path. Disabling all curl based notifications."
+		SEND_PUSHOVER="NO"
+		SEND_PUSHBULLET="NO"
+		SEND_TELEGRAM="NO"
+		SEND_SLACK="NO"
+		SEND_MSTEAM="NO"
+		SEND_ROCKETCHAT="NO"
+		SEND_ALERTA="NO"
+		SEND_PD="NO"
+		SEND_FLOCK="NO"
+		SEND_DISCORD="NO"
+		SEND_TWILIO="NO"
+		SEND_HIPCHAT="NO"
+		SEND_MESSAGEBIRD="NO"
+		SEND_KAVENEGAR="NO"
+		SEND_KAFKA="NO"
+		SEND_FLEEP="NO"
+		SEND_PROWL="NO"
+		SEND_CUSTOM="NO"
+	fi
+fi
+
+if [ "${SEND_SMS}" = "YES" ]; then
+	if [ -z "${sendsms}" ]; then
+		sendsms="$(command -v sendsms 2>/dev/null)"
+	fi
+	if [ -z "${sendsms}" ]; then
+		SEND_SMS="NO"
+	fi
+fi
+# if we need sendmail, check for the sendmail command
+if [ "${SEND_EMAIL}" = "YES" ] && [ -z "${sendmail}" ]; then
+	sendmail="$(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" ] && [ -z "${logger}" ]; then
+	logger="$(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" ] && [ -z "${aws}" ]; then
+	aws="$(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
+
+# -----------------------------------------------------------------------------
+# find the recipients' addresses per method
+
+# netdata may call us with multiple roles, and roles may have multiple but
+# overlapping recipients - so, here we find the unique recipients.
+for method_name in ${method_names}; do
+	send_var="SEND_${method_name^^}"
+	if [ "${!send_var}" = "NO" ]; then
+		continue
+	fi
+
+	declare -A arr_var=()
+
+	for x in ${roles//,/ }; do
+		# the roles 'silent' and 'disabled' mean:
+		# don't send a notification for this role
+		if [ "${x}" = "silent" ] || [ "${x}" = "disabled" ]; then
+			continue
+		fi
+
+		role_recipients="role_recipients_${method_name}[$x]"
+		default_recipient_var="DEFAULT_RECIPIENT_${method_name^^}"
+
+		a="${!role_recipients}"
+		[ -z "${a}" ] && a="${!default_recipient_var}"
+		for r in ${a//,/ }; do
+			[ "${r}" != "disabled" ] && filter_recipient_by_criticality ${method_name} "${r}" && arr_var[${r/|*/}]="1"
+		done
+	done
+
+	# build the list of recipients
+	to_var="to_${method_name}"
+	declare to_${method_name}="${!arr_var[*]}"
+
+	[ -z "${!to_var}" ] && declare ${send_var}="NO"
+done
+
+# -----------------------------------------------------------------------------
+# handle fixup of the email recipient list.
+
+fix_to_email() {
+	to_email=
+	while [ -n "${1}" ]; do
+		[ -n "${to_email}" ] && to_email="${to_email}, "
+		to_email="${to_email}${1}"
+		shift 1
+	done
+}
+
+# ${to_email} without quotes here
+fix_to_email ${to_email}
+
+# -----------------------------------------------------------------------------
+# handle output if we're running in unit test mode
+if [ ${unittest} ]; then
+	for method_name in ${method_names}; do
+		to_var="to_${method_name}"
+		echo "results: ${method_name}: ${!to_var}"
+	done
+	exit 0
+fi
+
+# -----------------------------------------------------------------------------
+# check that we have at least a method enabled
+proceed=0
+for method in "${SEND_EMAIL}" \
+	"${SEND_PUSHOVER}" \
+	"${SEND_TELEGRAM}" \
+	"${SEND_SLACK}" \
+	"${SEND_ROCKETCHAT}" \
+	"${SEND_ALERTA}" \
+	"${SEND_FLOCK}" \
+	"${SEND_DISCORD}" \
+	"${SEND_TWILIO}" \
+	"${SEND_HIPCHAT}" \
+	"${SEND_MESSAGEBIRD}" \
+	"${SEND_KAVENEGAR}" \
+	"${SEND_PUSHBULLET}" \
+	"${SEND_KAFKA}" \
+	"${SEND_PD}" \
+	"${SEND_FLEEP}" \
+	"${SEND_PROWL}" \
+	"${SEND_CUSTOM}" \
+	"${SEND_IRC}" \
+	"${SEND_AWSSNS}" \
+	"${SEND_SYSLOG}" \
+	"${SEND_SMS}" \
+	"${SEND_MSTEAM}"; do
+	if [ "${method}" == "YES" ]; then
+		proceed=1
+		break
+	fi
+done
+if [ "$proceed" -eq 0 ]; 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" ] && [ "${EMAIL_THREADING}" != "NO" ]; then
+	email_thread_headers="In-Reply-To: <${chart}-${name}@${host}>\\r\\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 [ "${SEND_EMAIL}" = "YES" ]; then
+
+		if [ -n "${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
+
+		[ -n "${sender_email}" ] && opts+=(-f "${sender_email}")
+		[ -n "${sender_name}" ] && opts+=(-F "${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 [ "${SEND_PUSHOVER}" = "YES" ] && [ -n "${apptoken}" ] && [ -n "${usertokens}" ] && [ -n "${title}" ] && [ -n "${message}" ]; then
+
+		# https://pushover.net/api
+		priority=-2
+		case "${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" ] && [ -n "${userapikey}" ] && [ -n "${recipients}" ] && [ -n "${message}" ] && [ -n "${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 [ ${SEND_PD} = "YES" ] && [ -n "${t}" ]; then
+		for PD_SERVICE_KEY in ${recipients}; do
+			d="${status} ${name} = ${value_string} - ${host}, ${family}"
+			payload="$(
+				cat <<EOF
+            {
+              "service_key": "${PD_SERVICE_KEY}",
+              "event_type": "${t}",
+              "incident_key" : "${alarm_id}",
+              "description": "${d}",
+              "details": {
+                "value_w_units": "${value_string}",
+                "when": "${when}",
+                "duration" : "${duration}",
+                "roles": "${roles}",
+                "alarm_id" : "${alarm_id}",
+                "name" : "${name}",
+                "chart" : "${chart}",
+                "family" : "${family}",
+                "status" : "${status}",
+                "old_status" : "${old_status}",
+                "value" : "${value}",
+                "old_value" : "${old_value}",
+                "src" : "${src}",
+                "non_clear_duration" : "${non_clear_duration}",
+                "units" : "${units}",
+                "info" : "${info}"
+              }
+            }
+EOF
+			)"
+			httpcode=$(docurl -X POST --data "${payload}" "https://events.pagerduty.com/generic/2010-04-15/create_event.json")
+			if [ "${httpcode}" = "200" ]; then
+				info "sent pagerduty notification for: ${host} ${chart}.${name} is ${status}'"
+				sent=$((sent + 1))
+			else
+				error "failed to send pagerduty notification for: ${host} ${chart}.${name} is ${status}, with HTTP error code ${httpcode}."
+			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" ] && [ -n "${accountsid}" ] && [ -n "${accounttoken}" ] && [ -n "${twilionumber}" ] && [ -n "${recipients}" ] && [ -n "${message}" ] && [ -n "${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 msg_format notify
+
+	# remove <small></small> from the message
+	message="${message//<small>/}"
+	message="${message//<\/small>/}"
+
+	if [ "${SEND_HIPCHAT}" = "YES" ] && [ -n "${HIPCHAT_SERVER}" ] && [ -n "${authtoken}" ] && [ -n "${recipients}" ] && [ -n "${message}" ]; then
+		# Valid values: html, text.
+		# Defaults to 'html'.
+		msg_format="html"
+
+		# Background color for message. Valid values: yellow, green, red, purple, gray, random. Defaults to 'yellow'.
+		case "${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 [ "${SEND_MESSAGEBIRD}" = "YES" ] && [ -n "${accesskey}" ] && [ -n "${messagebirdnumber}" ] && [ -n "${recipients}" ] && [ -n "${message}" ] && [ -n "${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 [ "${SEND_KAVENEGAR}" = "YES" ] && [ -n "${API_KEY}" ] && [ -n "${kavenegarsender}" ] && [ -n "${recipients}" ] && [ -n "${message}" ] && [ -n "${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}" = "200" ]; 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 [ "${SEND_TELEGRAM}" = "YES" ] && [ -n "${bottoken}" ] && [ -n "${chatids}" ] && [ -n "${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 ${channels}; do
+		# Default entry in the recipient is without a hash in front (backwards-compatible). Accept specification of channel or user.
+		if [ "${channel::1}" != "#" ] && [ "${channel::1}" != "@" ]; then channel="#$channel"; fi
+
+		# If channel is equal to "#" then do not send the channel attribute at all. Slack also defines channels and users in webhooks.
+		if [ "${channel}" = "#" ]; then
+			ch=""
+			chstr="without specifying a channel"
+		else
+			ch="\"channel\": \"${channel}\","
+			chstr="to '${channel}'"
+		fi
+
+		payload="$(
+			cat <<EOF
+        {
+            $ch
+            "username": "netdata on ${host}",
+            "icon_url": "${images_base_url}/images/banner-icon-144x144.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 ${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} ${chstr}"
+			sent=$((sent + 1))
+		else
+			error "failed to send slack notification for: ${host} ${chart}.${name} is ${status} ${chstr}, 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/banner-icon-144x144.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="${2}" httpcode sent=0 channel severity resource event payload auth
+
+	[ "${SEND_ALERTA}" != "YES" ] && return 1
+
+	case "${status}" in
+	CRITICAL) severity="critical" ;;
+	WARNING) severity="warning" ;;
+	CLEAR) severity="cleared" ;;
+	*) severity="indeterminate" ;;
+	esac
+
+	if [[ ${chart} == httpcheck* ]]; then
+		resource=$chart
+		event=$name
+	else
+		resource="${host}:${family}"
+		event="${chart}.${name}"
+	fi
+
+	for channel in ${channels}; do
+		payload="$(
+			cat <<EOF
+        {
+            "resource": "${resource}",
+            "event": "${event}",
+            "environment": "${channel}",
+            "severity": "${severity}",
+            "service": ["Netdata"],
+            "group": "Performance",
+            "value": "${value_string}",
+            "text": "${info}",
+            "tags": ["alarm_id:${alarm_id}"],
+            "attributes": {
+                "roles": "${roles}",
+                "name": "${name}",
+                "chart": "${chart}",
+                "family": "${family}",
+                "source": "${src}",
+                "moreInfo": "<a href=\"${goto_url}\">View Netdata</a>"
+            },
+            "origin": "netdata/${host}",
+            "type": "netdataAlarm",
+            "rawData": "${BASH_ARGV[@]}"
+        }
+EOF
+		)"
+
+		if [ -n "${ALERTA_API_KEY}" ]; then
+			auth="Key ${ALERTA_API_KEY}"
+		fi
+
+		httpcode=$(docurl -X POST "${webhook}/alert" -H "Content-Type: application/json" -H "Authorization: $auth" --data "${payload}")
+
+		if [ "${httpcode}" = "200" ] || [ "${httpcode}" = "201" ]; then
+			info "sent alerta notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+			sent=$((sent + 1))
+		elif [ "${httpcode}" = "202" ]; then
+			info "suppressed alerta notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+		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/banner-icon-144x144.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": "${images_base_url}/images/banner-icon-144x144.png",
+            "attachments": [
+                {
+                    "color": "${color}",
+                    "title": "${alarm}",
+                    "title_link": "${goto_url}",
+                    "text": "${info}",
+                    "fields": [
+                        {
+                            "title": "${chart}",
+                            "value": "${family}"
+                        }
+                    ],
+                    "thumb_url": "${image}",
+                    "footer_icon": "${images_base_url}/images/banner-icon-144x144.png",
+                    "footer": "${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
+
+		[ ${sent} -gt 0 ] && return 0
+	fi
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# Prowl sender
+
+send_prowl() {
+	local httpcode sent=0 data message keys prio=0 alarm_url event
+	if [ "${SEND_PROWL}" = "YES" ]; then
+		message="$(urlencode "${host} ${status_message}, \`${chart}\` (${family}), *${alarm}*\\n${info}")"
+		message="description=${message}"
+		keys="$(urlencode "$(echo "${1}" | tr ' ' ,)")"
+		keys="apikey=${keys}"
+		app="application=Netdata"
+
+		case "${status}" in
+		CRITICAL)
+			prio=2
+			;;
+		WARNING)
+			prio=1
+			;;
+		esac
+		prio="priority=${prio}"
+
+		alarm_url="$(urlencode ${goto_url})"
+		alarm_url="url=${alarm_url}"
+		event="$(urlencode "${host} ${status_message}")"
+		event="event=${event}"
+
+		data="${keys}&${prio}&${alarm_url}&${app}&${event}&${message}"
+
+		httpcode=$(docurl -X POST --data "${data}" "https://api.prowlapp.com/publicapi/add")
+
+		if [ "${httpcode}" = "200" ]; then
+			info "sent prowl data for: ${host} ${chart}.${name} is ${status}"
+			sent=1
+		else
+			error "failed to send prowl data for: ${host} ${chart}.${name} is ${status} with with error code ${httpcode}."
+		fi
+
+		[ ${sent} -gt 0 ] && return 0
+	fi
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# irc sender
+
+send_irc() {
+	local NICKNAME="${1}" REALNAME="${2}" CHANNELS="${3}" NETWORK="${4}" SERVERNAME="${5}" MESSAGE="${6}" sent=0 channel color send_alarm reply_codes error
+
+	if [ "${SEND_IRC}" = "YES" ] && [ -n "${NICKNAME}" ] && [ -n "${REALNAME}" ] && [ -n "${CHANNELS}" ] && [ -n "${NETWORK}" ] && [ -n "${SERVERNAME}" ]; then
+		case "${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 ${reply_codes}; do
+				if [ "${code}" -ge 400 ] && [ "${code}" -le 599 ]; then
+					error=1
+					break
+				fi
+			done
+
+			if [ "${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 ':')"
+		if ${aws} sns publish --region "${region}" --subject "${host} ${status_message} - ${name//_/ } - ${chart}" --message "${message}" --target-arn ${target} &>/dev/null; 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 $?
+}
+
+# -----------------------------------------------------------------------------
+# SMS sender
+
+send_sms() {
+	local recipients="${1}" errcode errmessage sent=0
+
+    # Human readable SMS
+    local msg="${host} ${status_message}: ${chart} (${family}), ${alarm}"
+
+    # limit it to 160 characters
+    msg="${msg:0:160}"
+
+	if [ "${SEND_SMS}" = "YES" ] && [ -n "${sendsms}" ] && [ -n "${recipients}" ] && [ -n "${msg}" ]; then
+		# http://api.kavenegar.com/v1/{API-KEY}/sms/send.json
+		for phone in ${recipients}; do
+			errmessage=$($sendsms $phone "$msg" 2>&1)
+			errcode=$?
+			if [ ${errcode} -eq 0 ]; then
+				info "sent smstools3 SMS for: ${host} ${chart}.${name} is ${status} to '${user}'"
+				sent=$((sent + 1))
+			else
+				error "failed to send smstools3 SMS for: ${host} ${chart}.${name} is ${status} to '${user}' with error code ${errcode}: ${errmessage}."
+			fi
+		done
+
+		[ ${sent} -gt 0 ] && return 0
+	fi
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# prepare the content of the notification
+
+# the url to send the user on click
+urlencode "${args_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="${REPLY}"
+
+redirect_params="host=${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}"
+GOTOCLOUD=0
+
+if [ "${NETDATA_REGISTRY_URL}" == "https://registry.my-netdata.io" ]; then
+	if [ -z "${NETDATA_REGISTRY_UNIQUE_ID}" ]; then
+		if [ -f "/var/lib/netdata/registry/netdata.public.unique.id" ]; then
+			NETDATA_REGISTRY_UNIQUE_ID="$(cat "/var/lib/netdata/registry/netdata.public.unique.id")"
+		fi
+	fi
+	if [ -n "${NETDATA_REGISTRY_UNIQUE_ID}" ]; then
+		GOTOCLOUD=1
+	fi
+fi
+
+if [ ${GOTOCLOUD} -eq 0 ]; then
+	goto_url="${NETDATA_REGISTRY_URL}/goto-host-from-alarm.html?${redirect_params}"
+else
+	goto_url="${NETDATA_REGISTRY_CLOUD_BASE_URL}/alarms/redirect?agentID=${NETDATA_REGISTRY_UNIQUE_ID}&${redirect_params}"
+fi
+
+# 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/banner-icon-144x144.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" ] && [ "${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" ] && [ "${status}" = "WARNING" ]; }; then
+	severity="Demoted to ${status}"
+	if [ ${non_clear_duration} -gt ${duration} ]; then
+		raised_for="(alarm is raised for ${non_clear_duration_txt})"
+	fi
+
+else
+	raised_for=
+fi
+
+# prepare HTML versions of elements
+info_html=
+[ -n "${info}" ] && info_html=" <small><br/>${info}</small>"
+
+raised_for_html=
+[ -n "${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}\\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=$?
+
+# -----------------------------------------------------------------------------
+# send the Prowl message
+
+send_prowl "${to_prowl}"
+SENT_PROWL=$?
+
+# -----------------------------------------------------------------------------
+# send the irc message
+
+send_irc "${IRC_NICKNAME}" "${IRC_REALNAME}" "${to_irc}" "${IRC_NETWORK}" "${host}" "${host} ${status_message} - ${name//_/ } - ${chart} ----- ${alarm}
+Severity: ${severity}
+Chart: ${chart}
+Family: ${family}
+${info}"
+
+SENT_IRC=$?
+
+# -----------------------------------------------------------------------------
+# send the SMS message with smstools3
+
+send_sms "${to_sms}"
+
+SENT_SMS=$?
+
+# -----------------------------------------------------------------------------
+# send the custom message
+
+send_custom() {
+	# is it enabled?
+	[ "${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
+
+IFS='' read -r -d '' email_plaintext_part <<EOF
+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 ${host}
+
+Evaluated Expression :  ${calc_expression}
+Expression Variables :  ${calc_param_values}
+
+The host has ${total_warnings} WARNING and ${total_critical} CRITICAL alarm(s) raised.
+EOF
+
+if [[ "${EMAIL_PLAINTEXT_ONLY}" == "YES" ]]; then
+
+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
+${email_plaintext_part}
+--multipart-boundary--
+EOF
+
+else
+
+IFS='' read -r -d '' email_html_part <<EOF
+Content-Type: text/html; encoding=${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;" align="left" valign="top">
+                                            <span>${calc_expression}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Evaluated Expression</span>
+                                        </td>
+                                    </tr>
+                                     <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            <span>${calc_param_values}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Expression Variables</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">
+                                            The host has ${total_warnings} WARNING and ${total_critical} CRITICAL alarm(s) raised.
+                                         </td>
+                                    </tr>
+
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;">
+                                            <a href="${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>${src}</code><br/>(alarms are configurable, edit this file to adapt the alarm to your needs)
+                                        </td>
+                                    </tr>
+                                    <tr style="text-align: center; margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 12px; vertical-align: top; margin:0; padding: 20px 0 0 0; color: #666666; border-top: 1px solid #f0f0f0;" align="center" valign="bottom">Sent by
+                                            <a href="https://mynetdata.io/" target="_blank">netdata</a>, the real-time performance and health monitoring, on <code>${host}</code>.
+                                        </td>
+                                    </tr>
+                                    </tbody>
+                                </table>
+                            </div>
+                        </td>
+                    </tr>
+                    </tbody>
+                </table>
+            </div>
+        </td>
+    </tr>
+    </tbody>
+</table>
+</body>
+</html>
+EOF
+
+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
+${email_plaintext_part}
+--multipart-boundary
+${email_html_part}
+--multipart-boundary--
+EOF
+
+fi
+
+SENT_EMAIL=$?
+
+# -----------------------------------------------------------------------------
+# let netdata know
+for state in "${SENT_EMAIL}" \
+	"${SENT_PUSHOVER}" \
+	"${SENT_TELEGRAM}" \
+	"${SENT_SLACK}" \
+	"${SENT_ROCKETCHAT}" \
+	"${SENT_ALERTA}" \
+	"${SENT_FLOCK}" \
+	"${SENT_DISCORD}" \
+	"${SENT_TWILIO}" \
+	"${SENT_HIPCHAT}" \
+	"${SENT_MESSAGEBIRD}" \
+	"${SENT_KAVENEGAR}" \
+	"${SENT_PUSHBULLET}" \
+	"${SENT_KAFKA}" \
+	"${SENT_PD}" \
+	"${SENT_FLEEP}" \
+	"${SENT_PROWL}" \
+	"${SENT_CUSTOM}" \
+	"${SENT_IRC}" \
+	"${SENT_AWSSNS}" \
+	"${SENT_SYSLOG}" \
+	"${SENT_SMS}" \
+	"${SENT_MSTEAM}"; do
+	if [ "${state}" -eq 0 ]; then
+		# we sent something
+		exit 0
+	fi
+done
+# we did not send anything
+exit 1
diff --git a/health/notifications/alerta/README.md b/health/notifications/alerta/README.md
index 2826fe773..a34d2b796 100644
--- a/health/notifications/alerta/README.md
+++ b/health/notifications/alerta/README.md
@@ -26,7 +26,9 @@ configurations are out os scope of this tutorial but information
 about different deployment scenaries can be found in the  [docs][3].
 
 [1]: https://hub.docker.com/r/alerta/alerta-web/
+
 [2]: http://alerta.readthedocs.io/en/latest/gettingstarted/tutorial-1-deploy-alerta.html
+
 [3]: http://docs.alerta.io/en/latest/deployment.html
 
 ## Send alarms to Alerta
@@ -42,7 +44,9 @@ Step 2. configure Netdata to send alarms to Alerta
 
 On your system run:
 
-    $ /etc/netdata/edit-config health_alarm_notify.conf
+```sh
+/etc/netdata/edit-config health_alarm_notify.conf
+```
 
 and modify the file as below:
 
@@ -70,13 +74,15 @@ DEFAULT_RECIPIENT_ALERTA="Production"
 
 We can test alarms using the standard approach:
 
-    $ /opt/netdata/netdata-plugins/plugins.d/alarm-notify.sh test
+```sh
+/opt/netdata/netdata-plugins/plugins.d/alarm-notify.sh test
+```
 
 Note: Netdata will send 3 alarms, and because last alarm is "CLEAR"
 you will not see 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.
 
-For more information see [https://docs.alerta.io](https://docs.alerta.io)
+For more information see <https://docs.alerta.io>
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Falerta%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Falerta%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/awssns/README.md b/health/notifications/awssns/README.md
index 5205d4cb4..ed838dacb 100644
--- a/health/notifications/awssns/README.md
+++ b/health/notifications/awssns/README.md
@@ -2,23 +2,25 @@
 
 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.
+-   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.
+-   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:
+Once you have all the above, run the following command as the user Netdata runs under:
 
-    aws configure
+```
+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).
 
@@ -26,8 +28,8 @@ Once that's done, you're ready to go and can specify the desired topic ARN as a
 
 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.
+-   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.
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fawssns%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fawssns%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/custom/README.md b/health/notifications/custom/README.md
index eeaad8a60..18df79541 100644
--- a/health/notifications/custom/README.md
+++ b/health/notifications/custom/README.md
@@ -39,45 +39,45 @@ The following is a sample `custom_sender` function in `health_alarm_notify.conf`
 
 Variables available to the custom_sender:
 
- - `${to_custom}`          the list of recipients for the alarm
- - `${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
- - `${goto_url}`           the URL the user can click to see the netdata dashboard
- - `${calc_expression}`    the expression evaluated to provide the value for the alarm
- - `${calc_param_values}`  the value of the variables in the evaluated expression
- - `${total_warnings}`     the total number of alarms in WARNING state on the host
- - `${total_critical}`     the total number of alarms in CRITICAL state on the host
+-   `${to_custom}`          the list of recipients for the alarm
+-   `${host}`               the host generated this event
+-   `${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
+-   `${calc_expression}`    the expression evaluated to provide the value for the alarm
+-   `${calc_param_values}`  the value of the variables in the evaluated expression
+-   `${total_warnings}`     the total number of alarms in WARNING state on the host
+-   `${total_critical}`     the total number of alarms in CRITICAL state on the host
 
 The following 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)"
+-   `${alarm}`              like "name = value units"
+-   `${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)"
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fcustom%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fcustom%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/discord/README.md b/health/notifications/discord/README.md
index 7694fef4b..88e0a970e 100644
--- a/health/notifications/discord/README.md
+++ b/health/notifications/discord/README.md
@@ -6,8 +6,8 @@ This is what you will get:
 
 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.
+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:
 
@@ -29,7 +29,6 @@ DISCORD_WEBHOOK_URL="https://discordapp.com/api/webhooks/XXXXXXXXXXXXX/XXXXXXXXX
 # 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`.
@@ -43,4 +42,4 @@ role_recipients_discord[webmaster]="marketing development"
 
 The keywords `systems`, `databases`, `marketing`, `development` are discordapp.com channels (they should already exist within your discord server).
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fdiscord%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fdiscord%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/email/README.md b/health/notifications/email/README.md
index 84a9e0ce7..92916d192 100644
--- a/health/notifications/email/README.md
+++ b/health/notifications/email/README.md
@@ -2,7 +2,7 @@
 
 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.
+Netdata sends all emails as user `netdata`, so make sure your `sendmail` works for local users.
 
 email notifications look like this:
 
@@ -16,7 +16,7 @@ You can configure recipients in [`/etc/netdata/health_alarm_notify.conf`](https:
 
 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.
+Changes to this file do not require a Netdata restart.
 
 You can test your configuration by issuing the commands:
 
@@ -30,6 +30,7 @@ sudo su -s /bin/bash netdata
 
 Where `[ROLE]` is the role you want to test. The default (if you don't give a `[ROLE]`) is `sysadmin`.
 
-Note that in versions before 1.16, the plugins.d directory may be installed in a different location in certain OSs (e.g. under `/usr/lib/netdata`). You can always find the location of the alarm-notify.sh script in `netdata.conf`.
+Note that in versions before 1.16, the plugins.d directory may be installed in a different location in certain OSs (e.g. under `/usr/lib/netdata`). 
+You can always find the location of the alarm-notify.sh script in `netdata.conf`.
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Femail%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Femail%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/flock/README.md b/health/notifications/flock/README.md
index 0d679ce6b..658fc7b82 100644
--- a/health/notifications/flock/README.md
+++ b/health/notifications/flock/README.md
@@ -2,14 +2,14 @@
 
 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).
+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
+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:
 
@@ -21,13 +21,12 @@ Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system r
 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.
+# 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"
-
 ```
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fflock%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fflock%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/irc/README.md b/health/notifications/irc/README.md
index 9ea86e92d..36590eb79 100644
--- a/health/notifications/irc/README.md
+++ b/health/notifications/irc/README.md
@@ -2,15 +2,15 @@
 
 This is what you will get:
 
-IRCCloud web client:  
+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 `$PATH`.
+
+1.  The `nc` utility. If you do not set the path, Netdata will search for it in your system `$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:
 
@@ -22,12 +22,11 @@ Set the path for `nc` in `/etc/netdata/health_alarm_notify.conf` (to edit it on
 # 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.   
+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:
 
@@ -57,11 +56,10 @@ 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 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):  
 
 ```
@@ -72,4 +70,4 @@ 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.
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Firc%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Firc%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/kavenegar/README.md b/health/notifications/kavenegar/README.md
index d833eef82..495b5338e 100644
--- a/health/notifications/kavenegar/README.md
+++ b/health/notifications/kavenegar/README.md
@@ -8,10 +8,10 @@ Will look like this on your Android device:
 
 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=""
+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:
 
@@ -32,10 +32,10 @@ SEND_KAVENEGAR="YES"
 # 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.
+# Without an API key, Netdata cannot send KAVENEGAR text messages.
 KAVENEGAR_API_KEY=""
 KAVENEGAR_SENDER=""
 DEFAULT_RECIPIENT_KAVENEGAR=""
 ```
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fkavenegar%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fkavenegar%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/messagebird/README.md b/health/notifications/messagebird/README.md
index cdb3e8dc1..30d52a4f2 100644
--- a/health/notifications/messagebird/README.md
+++ b/health/notifications/messagebird/README.md
@@ -6,12 +6,12 @@ The messagebird notifications will look like this on your Android device:
 
 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"
+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)
+5.  Fill in MESSAGEBIRD_ACCESS_KEY="XXXXXXXX" MESSAGEBIRD_NUMBER="+XXXXXXXXXXX"
+6.  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:
 
@@ -31,11 +31,10 @@ SEND_MESSAGEBIRD="YES"
 # 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.
+# Without an access key, Netdata cannot send Messagebird text messages.
 MESSAGEBIRD_ACCESS_KEY="XXXXXXXX"
 MESSAGEBIRD_NUMBER="XXXXXXX"
 DEFAULT_RECIPIENT_MESSAGEBIRD="XXXXXXX"
-
 ```
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fmessagebird%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fmessagebird%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/pagerduty/README.md b/health/notifications/pagerduty/README.md
index 884b97923..59a48515c 100644
--- a/health/notifications/pagerduty/README.md
+++ b/health/notifications/pagerduty/README.md
@@ -2,13 +2,13 @@
 
 [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:
+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)
+![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:
+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/
+<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.
 
@@ -34,4 +34,4 @@ SEND_PD="YES"
 DEFAULT_RECIPIENT_PD="<service key>"
 ```
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fpagerduty%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fpagerduty%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/prowl/Makefile.inc b/health/notifications/prowl/Makefile.inc
deleted file mode 100644
index 08e4c2e54..000000000
--- a/health/notifications/prowl/Makefile.inc
+++ /dev/null
@@ -1,12 +0,0 @@
-# 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 += \
-	prowl/README.md \
-	prowl/Makefile.inc \
-	$(NULL)
-
diff --git a/health/notifications/prowl/README.md b/health/notifications/prowl/README.md
deleted file mode 100644
index 1f060edcf..000000000
--- a/health/notifications/prowl/README.md
+++ /dev/null
@@ -1,22 +0,0 @@
-# prowl
-
-(Prowl)[1] is a push notification service for iOS devices.  Netdata
-supprots delivering notifications to iOS devices through Prowl.
-
-Because of how Netdata integrates with Prowl, there is a hard limit of
-at most 1000 notifications per hour (starting from the first notification
-sent).  Any alerts beyond the first thousand in an hour will be dropped.
-
-Warning messages will be sent with the 'High' priority, critical messages
-will be sent with the 'Emergency' priority, and all other messages will
-be sent with the normal priority.  Opening the notification's associated
-URL will take you to the Netdata dashboard of the system that issued
-the alert, directly to the chart that it triggered on.
-
-## configuration
-
-To use this, you will need a Prowl API key, which can be rquested through
-the Prowl website after registering.
-
-Once you have an API key, simply specify that as a recipient for Prowl
-notifications.
diff --git a/health/notifications/pushbullet/README.md b/health/notifications/pushbullet/README.md
index 42b343e45..f5673eca9 100644
--- a/health/notifications/pushbullet/README.md
+++ b/health/notifications/pushbullet/README.md
@@ -5,16 +5,15 @@ Will look like this on your browser:
 
 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!!
+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:
 
@@ -36,9 +35,9 @@ SEND_PUSHBULLET="YES"
 # 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.
+# Without an access token, Netdata cannot send pushbullet notifications.
 PUSHBULLET_ACCESS_TOKEN="o.Sometokenhere"
 DEFAULT_RECIPIENT_PUSHBULLET="admin1@example.com admin3@somemail.com"
 ```
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fpushbullet%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fpushbullet%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/pushover/README.md b/health/notifications/pushover/README.md
index 1debf5dcd..2d488d1a8 100644
--- a/health/notifications/pushover/README.md
+++ b/health/notifications/pushover/README.md
@@ -2,12 +2,12 @@
 
 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.
+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.
+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).
 
@@ -15,4 +15,4 @@ pushover.net notifications look like this:
 
 ![image](https://cloud.githubusercontent.com/assets/2662304/18407319/839c10c4-7715-11e6-92c0-12f8215128d3.png)
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fpushover%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fpushover%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/rocketchat/README.md b/health/notifications/rocketchat/README.md
index f05e73f08..47ac5e3f1 100644
--- a/health/notifications/rocketchat/README.md
+++ b/health/notifications/rocketchat/README.md
@@ -4,10 +4,10 @@ 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.
+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
+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:
 
@@ -22,15 +22,14 @@ Set them in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system r
 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.
+# 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`.
@@ -45,4 +44,4 @@ 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.
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Frocketchat%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Frocketchat%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/slack/README.md b/health/notifications/slack/README.md
index 0616de463..2352d27c8 100644
--- a/health/notifications/slack/README.md
+++ b/health/notifications/slack/README.md
@@ -5,11 +5,11 @@ This is what you will get:
 
 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.
+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.
 
 To get a webhook that works on multiple channels, you will need to login to your slack.com workspace and create an incoming webhook using the [Incoming Webhooks App](https://slack.com/apps/A0F7XDUAZ-incoming-webhooks).
-Do NOT use the instructions in https://api.slack.com/incoming-webhooks#enable_webhooks, as the particular webhooks work only for a single channel.
+Do NOT use the instructions in <https://api.slack.com/incoming-webhooks#enable_webhooks>, as the particular webhooks work only for a single channel.
 
 Set the webhook and the recipients in `/etc/netdata/health_alarm_notify.conf` (to edit it on your system run `/etc/netdata/edit-config health_alarm_notify.conf`), like this:
 
@@ -24,15 +24,15 @@ SLACK_WEBHOOK_URL="https://hooks.slack.com/services/XXXXXXXX/XXXXXXXX/XXXXXXXXXX
 # - The channel or user defined in slack for the webhook (syntax: '#')
 # empty = do not send a notification for unconfigured roles 
 DEFAULT_RECIPIENT_SLACK="alarms"
-
 ```
 
 You can define multiple recipients like this: `# #alarms systems @myuser`. 
 This example will send the alarm to:
-- The recipient defined in slack for the webhook (not known to netdata)
-- The channel 'alarms'
-- The channel 'systems'
-- The user @myuser
+
+-   The recipient defined in slack for the webhook (not known to Netdata)
+-   The channel 'alarms'
+-   The channel 'systems'
+-   The user @myuser
 
 You can give different recipients per **role** using these (at the same file):
 
@@ -42,4 +42,4 @@ role_recipients_slack[dba]="databases systems"
 role_recipients_slack[webmaster]="marketing development"
 ```
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fslack%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fslack%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/smstools3/README.md b/health/notifications/smstools3/README.md
index 4a1469853..28184b3c4 100644
--- a/health/notifications/smstools3/README.md
+++ b/health/notifications/smstools3/README.md
@@ -2,12 +2,12 @@
 
 The [SMS Server Tools 3](http://smstools3.kekekasvi.com/) is a SMS Gateway software which can send and receive short messages through GSM modems and mobile phones.
 
-To have netdata send notifications via SMS Server Tools 3, you'll first need to [install](http://smstools3.kekekasvi.com/index.php?p=compiling) and [configure](http://smstools3.kekekasvi.com/index.php?p=configure) smsd.
+To have Netdata send notifications via SMS Server Tools 3, you'll first need to [install](http://smstools3.kekekasvi.com/index.php?p=compiling) and [configure](http://smstools3.kekekasvi.com/index.php?p=configure) smsd.
 
 Ensure that the user `netdata` can execute `sendsms`. Any user executing `sendsms` needs to:
 
-* Have write permissions to `/tmp` and `/var/spool/sms/outgoing`
-* Be a member of group `smsd`
+-   Have write permissions to `/tmp` and `/var/spool/sms/outgoing`
+-   Be a member of group `smsd`
 
 To ensure that the steps above are successful, just `su netdata` and execute `sendsms phone message`.
 
@@ -36,4 +36,4 @@ Netdata uses the script `sendsms` that is installed by `smstools3` and just pass
 sendsms=""
 ```
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fsmstools3%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fsmstools3%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/syslog/README.md b/health/notifications/syslog/README.md
index 597db0cd2..5f1d5d8be 100644
--- a/health/notifications/syslog/README.md
+++ b/health/notifications/syslog/README.md
@@ -4,7 +4,9 @@ You need a working `logger` command for this to work.  This is the case on prett
 
 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
+```
+netdata WARNING on hostname at Tue Apr 3 09:00:00 EDT 2018: disk_space._ out of disk space time = 5h
+```
 
 ## configuration
 
@@ -14,12 +16,14 @@ 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
+```
+[[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).
+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).
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fsyslog%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fsyslog%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/telegram/README.md b/health/notifications/telegram/README.md
index 9d652542c..981030efd 100644
--- a/health/notifications/telegram/README.md
+++ b/health/notifications/telegram/README.md
@@ -4,13 +4,13 @@
 
 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.
+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.
+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.
 
@@ -18,4 +18,4 @@ Telegram messages look like this:
 
 ![image](https://fb.hash.works/ytl/preview.jpg)
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Ftelegram%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Ftelegram%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/twilio/README.md b/health/notifications/twilio/README.md
index 743f54e3c..8c8d7cfb8 100644
--- a/health/notifications/twilio/README.md
+++ b/health/notifications/twilio/README.md
@@ -6,11 +6,11 @@ Will look like this on your Android device:
 
 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"
+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>
+4.  Fill in TWILIO_ACCOUNT_SID="XXXXXXXX" TWILIO_ACCOUNT_TOKEN="XXXXXXXXX" TWILIO_NUMBER="+XXXXXXXXXXX"
+5.  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
 
@@ -32,11 +32,11 @@ SEND_TWILIO="YES"
 # 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.
+# 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"
 ```
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Ftwilio%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Ftwilio%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/health/notifications/web/README.md b/health/notifications/web/README.md
index 0aac9419b..8eed06bfb 100644
--- a/health/notifications/web/README.md
+++ b/health/notifications/web/README.md
@@ -1,8 +1,8 @@
 # Dashboard
 
-The netdata dashboard shows HTML notifications, when it is open.
+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)
 
-[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fweb%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)]()
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fhealth%2Fnotifications%2Fweb%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)