Merging upstream version 1.12.0.

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

1 files changed, 755 insertions, 0 deletions

diff --git a/contrib/sles11/alarm-notify-basic.bash3.sh b/contrib/sles11/alarm-notify-basic.bash3.sh
new file mode 100755
index 000000000..df382923e
--- /dev/null
+++ b/contrib/sles11/alarm-notify-basic.bash3.sh
@@ -0,0 +1,755 @@
+#!/usr/bin/env bash
+
+# basic version of netdata notifier to work with bash3
+# only mail and syslog destinations are supported, one recipient each
+# - email: DEFAULT_RECIPIENT_EMAIL, "root" by default
+# - syslog: "netdata" with local6 facility; disabled by default
+# - also: setting recipient to "disabled" or "silent" stops notifications for this alert
+
+# in /etc/netdata/health_alarm_notify.conf set something like
+# EMAIL_SENDER="netdata@gesdev-vm.m0.maxidom.ru"
+# SEND_EMAIL="YES"
+# DEFAULT_RECIPIENT_EMAIL="root"
+# SEND_SYSLOG="YES"
+# SYSLOG_FACILITY="local6"
+# DEFAULT_RECIPIENT_SYSLOG="netdata"
+
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2017 Costa Tsaousis <costa@tsaousis.gr>
+# GPL v3+
+#
+# Script to send alarm notifications for netdata
+#
+# Supported notification methods:
+#  - emails by @ktsaou
+#  - syslog messages by @Ferroin
+#  - all the rest is pruned :)
+
+# -----------------------------------------------------------------------------
+# testing notifications
+
+if [ \( "${1}" = "test" -o "${2}" = "test" \) -a "${#}" -le 2 ]
+then
+    if [ "${2}" = "test" ]
+    then
+        recipient="${1}"
+    else
+        recipient="${2}"
+    fi
+
+    [ -z "${recipient}" ] && recipient="sysadmin"
+
+    id=1
+    last="CLEAR"
+    test_res=0
+    for x in "WARNING" "CRITICAL"  "CLEAR"
+    do
+        echo >&2
+        echo >&2 "# SENDING TEST ${x} ALARM TO ROLE: ${recipient}"
+
+        "${0}" "${recipient}" "$(hostname)" 1 1 "${id}" "$(date +%s)" "test_alarm" "test.chart" "test.family" "${x}" "${last}" 100 90 "${0}" 1 $((0 + id)) "units" "this is a test alarm to verify notifications work" "new value" "old value"
+        if [ $? -ne 0 ]
+        then
+            echo >&2 "# FAILED"
+            test_res=1
+        else
+            echo >&2 "# OK"
+        fi
+
+        last="${x}"
+        id=$((id + 1))
+    done
+
+    exit $test_res
+fi
+
+export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/sbin"
+export LC_ALL=C
+
+# -----------------------------------------------------------------------------
+
+PROGRAM_NAME="$(basename "${0}")"
+
+logdate() {
+    date "+%Y-%m-%d %H:%M:%S"
+}
+
+log() {
+    local status="${1}"
+    shift
+
+    echo >&2 "$(logdate): ${PROGRAM_NAME}: ${status}: ${*}"
+
+}
+
+warning() {
+    log WARNING "${@}"
+}
+
+error() {
+    log ERROR "${@}"
+}
+
+info() {
+    log INFO "${@}"
+}
+
+fatal() {
+    log FATAL "${@}"
+    exit 1
+}
+
+debug=${NETDATA_ALARM_NOTIFY_DEBUG-0}
+debug() {
+    [ "${debug}" = "1" ] && log DEBUG "${@}"
+}
+
+docurl() {
+    if [ -z "${curl}" ]
+        then
+        error "\${curl} is unset."
+        return 1
+    fi
+
+    if [ "${debug}" = "1" ]
+        then
+        echo >&2 "--- BEGIN curl command ---"
+        printf >&2 "%q " ${curl} "${@}"
+        echo >&2
+        echo >&2 "--- END curl command ---"
+
+        local out=$(mktemp /tmp/netdata-health-alarm-notify-XXXXXXXX)
+        local code=$(${curl} ${curl_options} --write-out %{http_code} --output "${out}" --silent --show-error "${@}")
+        local ret=$?
+        echo >&2 "--- BEGIN received response ---"
+        cat >&2 "${out}"
+        echo >&2
+        echo >&2 "--- END received response ---"
+        echo >&2 "RECEIVED HTTP RESPONSE CODE: ${code}"
+        rm "${out}"
+        echo "${code}"
+        return ${ret}
+    fi
+
+    ${curl} ${curl_options} --write-out %{http_code} --output /dev/null --silent --show-error "${@}"
+    return $?
+}
+
+# -----------------------------------------------------------------------------
+# this is to be overwritten by the config file
+
+custom_sender() {
+    info "not sending custom notification for ${status} of '${host}.${chart}.${name}'"
+}
+
+
+# -----------------------------------------------------------------------------
+
+# check for BASH v4+ (required for associative arrays)
+[ $(( ${BASH_VERSINFO[0]} )) -lt 3 ] && \
+    fatal "BASH version 3 or later is required (this is ${BASH_VERSION})."
+
+# -----------------------------------------------------------------------------
+# defaults to allow running this script by hand
+
+[ -z "${NETDATA_CONFIG_DIR}"   ] && NETDATA_CONFIG_DIR="$(dirname "${0}")/../../../../etc/netdata"
+[ -z "${NETDATA_CACHE_DIR}"    ] && NETDATA_CACHE_DIR="$(dirname "${0}")/../../../../var/cache/netdata"
+[ -z "${NETDATA_REGISTRY_URL}" ] && NETDATA_REGISTRY_URL="https://registry.my-netdata.io"
+
+# -----------------------------------------------------------------------------
+# parse command line parameters
+
+roles="${1}"               # the roles that should be notified for this event
+host="${2}"                # the host generated this event
+unique_id="${3}"           # the unique id of this event
+alarm_id="${4}"            # the unique id of the alarm that generated this event
+event_id="${5}"            # the incremental id of the event, for this alarm id
+when="${6}"                # the timestamp this event occurred
+name="${7}"                # the name of the alarm, as given in netdata health.d entries
+chart="${8}"               # the name of the chart (type.id)
+family="${9}"              # the family of the chart
+status="${10}"             # the current status : REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
+old_status="${11}"         # the previous status: REMOVED, UNINITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
+value="${12}"              # the current value of the alarm
+old_value="${13}"          # the previous value of the alarm
+src="${14}"                # the line number and file the alarm has been configured
+duration="${15}"           # the duration in seconds of the previous alarm state
+non_clear_duration="${16}" # the total duration in seconds this is/was non-clear
+units="${17}"              # the units of the value
+info="${18}"               # a short description of the alarm
+value_string="${19}"       # friendly value (with units)
+old_value_string="${20}"   # friendly old value (with units)
+
+# -----------------------------------------------------------------------------
+# find a suitable hostname to use, if netdata did not supply a hostname
+
+this_host=$(hostname -s 2>/dev/null)
+[ -z "${host}" ] && host="${this_host}"
+
+# -----------------------------------------------------------------------------
+# screen statuses we don't need to send a notification
+
+# don't do anything if this is not WARNING, CRITICAL or CLEAR
+if [ "${status}" != "WARNING" -a "${status}" != "CRITICAL" -a "${status}" != "CLEAR" ]
+then
+    info "not sending notification for ${status} of '${host}.${chart}.${name}'"
+    exit 1
+fi
+
+# don't do anything if this is CLEAR, but it was not WARNING or CRITICAL
+if [ "${old_status}" != "WARNING" -a "${old_status}" != "CRITICAL" -a "${status}" = "CLEAR" ]
+then
+    info "not sending notification for ${status} of '${host}.${chart}.${name}' (last status was ${old_status})"
+    exit 1
+fi
+
+# -----------------------------------------------------------------------------
+# load configuration
+
+# By default fetch images from the global public registry.
+# This is required by default, since all notification methods need to download
+# images via the Internet, and private registries might not be reachable.
+# This can be overwritten at the configuration file.
+images_base_url="https://registry.my-netdata.io"
+
+# curl options to use
+curl_options=
+
+# needed commands
+# if empty they will be searched in the system path
+curl=
+sendmail=
+
+# enable / disable features
+SEND_EMAIL="YES"
+SEND_SYSLOG="YES"
+
+# syslog configs
+SYSLOG_FACILITY="local6"
+
+# email configs
+EMAIL_SENDER=
+DEFAULT_RECIPIENT_EMAIL="root"
+EMAIL_CHARSET=$(locale charmap 2>/dev/null)
+
+# load the user configuration
+# this will overwrite the variables above
+if [ -f "${NETDATA_CONFIG_DIR}/health_alarm_notify.conf" ]
+    then
+    source "${NETDATA_CONFIG_DIR}/health_alarm_notify.conf"
+else
+    error "Cannot find file ${NETDATA_CONFIG_DIR}/health_alarm_notify.conf. Using internal defaults."
+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 ${EMAIL_CHARSET} ]
+    then
+    EMAIL_CHARSET="UTF-8"
+fi
+
+# disable if role = silent or disabled
+if [[ "${role}" = "silent" || "${role}" = "disabled" ]]; then
+    SEND_EMAIL="NO"
+    SEND_SYSLOG="NO"
+fi
+
+if [[ "SEND_EMAIL" != "NO" ]]; then
+    to_email=$DEFAULT_RECIPIENT_EMAIL
+else
+    to_email=''
+fi
+
+if [[ "SEND_SYSLOG" != "NO" ]]; then
+    to_syslog=$DEFAULT_RECIPIENT_SYSLOG
+else
+    to_syslog=''
+fi
+
+# if we need sendmail, check for the sendmail command
+if [ "${SEND_EMAIL}" = "YES" -a -z "${sendmail}" ]
+    then
+    sendmail="$(which sendmail 2>/dev/null || command -v sendmail 2>/dev/null)"
+    if [ -z "${sendmail}" ]
+        then
+        debug "Cannot find sendmail command in the system path. Disabling email notifications."
+        SEND_EMAIL="NO"
+    fi
+fi
+
+# if we need logger, check for the logger command
+if [ "${SEND_SYSLOG}" = "YES" -a -z "${logger}" ]
+    then
+    logger="$(which logger 2>/dev/null || command -v logger 2>/dev/null)"
+    if [ -z "${logger}" ]
+        then
+        debug "Cannot find logger command in the system path. Disabling syslog notifications."
+        SEND_SYSLOG="NO"
+    fi
+fi
+
+# check that we have at least a method enabled
+if [   "${SEND_EMAIL}"          != "YES" \
+    -a "${SEND_SYSLOG}"         != "YES" \
+    ]
+    then
+    fatal "All notification methods are disabled. Not sending notification for host '${host}', chart '${chart}' to '${roles}' for '${name}' = '${value}' for status '${status}'."
+fi
+
+# -----------------------------------------------------------------------------
+# get the date the alarm happened
+
+date=$(date --date=@${when} "${DATE_FORMAT}" 2>/dev/null)
+[ -z "${date}" ] && date=$(date "${DATE_FORMAT}" 2>/dev/null)
+[ -z "${date}" ] && date=$(date --date=@${when} 2>/dev/null)
+[ -z "${date}" ] && date=$(date 2>/dev/null)
+
+# -----------------------------------------------------------------------------
+# 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 "${REPLY}"
+}
+
+# -----------------------------------------------------------------------------
+# email sender
+
+send_email() {
+    local ret= opts=
+    if [[ "${SEND_EMAIL}" == "YES" ]]
+        then
+
+        if [[ ! -z "${EMAIL_SENDER}" ]]
+            then
+            if [[ "${EMAIL_SENDER}" =~ \".*\"\ \<.*\> ]]
+                then
+                # the name includes single quotes
+                opts=" -f $(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1) -F $(echo "${EMAIL_SENDER}" | cut -d '<' -f 1)"
+            elif [[ "${EMAIL_SENDER}" =~ \'.*\'\ \<.*\> ]]
+                then
+                # the name includes double quotes
+                opts=" -f $(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1) -F $(echo "${EMAIL_SENDER}" | cut -d '<' -f 1)"
+            elif [[ "${EMAIL_SENDER}" =~ .*\ \<.*\> ]]
+                then
+                # the name does not have any quotes
+                opts=" -f $(echo "${EMAIL_SENDER}" | cut -d '<' -f 2 | cut -d '>' -f 1) -F '$(echo "${EMAIL_SENDER}" | cut -d '<' -f 1)'"
+            else
+                # no name at all
+                opts=" -f ${EMAIL_SENDER}"
+            fi
+        fi
+
+        if [[ "${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 ${ret}."
+            return 1
+        fi
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# syslog sender
+
+send_syslog() {
+    local facility=${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} ${value_string}"
+
+        message="${prefix} ${status}: ${chart} ${value_string}"
+
+        if [ ${host} ] ; then
+            logger_options="${logger_options} -n ${host}"
+            if [ ${port} ] ; then
+                logger_options="${logger_options} -P ${port}"
+            fi
+        fi
+
+        ${logger} -p ${priority} ${logger_options} "${message}"
+    done
+
+    return $?
+}
+
+
+# -----------------------------------------------------------------------------
+# prepare the content of the notification
+
+# the url to send the user on click
+urlencode "${host}" >/dev/null; url_host="${REPLY}"
+urlencode "${chart}" >/dev/null; url_chart="${REPLY}"
+urlencode "${family}" >/dev/null; url_family="${REPLY}"
+urlencode "${name}" >/dev/null; url_name="${REPLY}"
+goto_url="${NETDATA_REGISTRY_URL}/goto-host-from-alarm.html?host=${url_host}&chart=${url_chart}&family=${url_family}&alarm=${url_name}&alarm_unique_id=${unique_id}&alarm_id=${alarm_id}&alarm_event_id=${event_id}"
+
+# the severity of the alarm
+severity="${status}"
+
+# the time the alarm was raised
+duration4human ${duration} >/dev/null; duration_txt="${REPLY}"
+duration4human ${non_clear_duration} >/dev/null; non_clear_duration_txt="${REPLY}"
+raised_for="(was ${old_status} for ${duration_txt})"
+
+# the key status message
+status_message="status unknown"
+
+# the color of the alarm
+color="grey"
+
+# the alarm value
+alarm="${name//_/ } = ${value_string}"
+
+# the image of the alarm
+image="${images_base_url}/images/seo-performance-128.png"
+
+# prepare the title based on status
+case "${status}" in
+	CRITICAL)
+        image="${images_base_url}/images/alert-128-red.png"
+        status_message="is critical"
+        color="#ca414b"
+        ;;
+
+    WARNING)
+        image="${images_base_url}/images/alert-128-orange.png"
+        status_message="needs attention"
+        color="#ffc107"
+		;;
+
+	CLEAR)
+        image="${images_base_url}/images/check-mark-2-128-green.png"
+    	status_message="recovered"
+		color="#77ca6d"
+		;;
+esac
+
+if [ "${status}" = "CLEAR" ]
+then
+    severity="Recovered from ${old_status}"
+    if [ ${non_clear_duration} -gt ${duration} ]
+    then
+        raised_for="(alarm was raised for ${non_clear_duration_txt})"
+    fi
+
+    # don't show the value when the status is CLEAR
+    # for certain alarms, this value might not have any meaning
+    alarm="${name//_/ } ${raised_for}"
+
+elif [ "${old_status}" = "WARNING" -a "${status}" = "CRITICAL" ]
+then
+    severity="Escalated to ${status}"
+    if [ ${non_clear_duration} -gt ${duration} ]
+    then
+        raised_for="(alarm is raised for ${non_clear_duration_txt})"
+    fi
+
+elif [ "${old_status}" = "CRITICAL" -a "${status}" = "WARNING" ]
+then
+    severity="Demoted to ${status}"
+    if [ ${non_clear_duration} -gt ${duration} ]
+    then
+        raised_for="(alarm is raised for ${non_clear_duration_txt})"
+    fi
+
+else
+    raised_for=
+fi
+
+# prepare HTML versions of elements
+info_html=
+[ ! -z "${info}" ] && info_html=" <small><br/>${info}</small>"
+
+raised_for_html=
+[ ! -z "${raised_for}" ] && raised_for_html="<br/><small>${raised_for}</small>"
+
+
+# -----------------------------------------------------------------------------
+# send the syslog message
+
+send_syslog ${to_syslog}
+
+SENT_SYSLOG=$?
+
+# -----------------------------------------------------------------------------
+# send the email
+
+send_email <<EOF
+To: ${to_email}
+Subject: ${host} ${status_message} - ${name//_/ } - ${chart}
+MIME-Version: 1.0
+Content-Type: multipart/alternative; boundary="multipart-boundary"
+
+This is a MIME-encoded multipart message
+
+--multipart-boundary
+Content-Type: text/plain; encoding=${EMAIL_CHARSET}
+Content-Disposition: inline
+Content-Transfer-Encoding: 8bit
+
+${host} ${status_message}
+
+${alarm} ${info}
+${raised_for}
+
+Chart   : ${chart}
+Family  : ${family}
+Severity: ${severity}
+URL     : ${goto_url}
+Source  : ${src}
+Date    : ${date}
+Value   : ${value_string}
+Notification generated on ${this_host}
+
+--multipart-boundary
+Content-Type: text/html; encoding=${EMAIL_CHARSET}
+Content-Disposition: inline
+Content-Transfer-Encoding: 8bit
+
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; box-sizing: border-box; font-size: 14px; margin: 0; padding: 0;">
+<body style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 14px; width: 100% !important; min-height: 100%; line-height: 1.6; background: #f6f6f6; margin:0; padding: 0;">
+<table>
+    <tbody>
+    <tr>
+        <td style="vertical-align: top;" valign="top"></td>
+        <td width="700" style="vertical-align: top; display: block !important; max-width: 700px !important; clear: both !important; margin: 0 auto; padding: 0;" valign="top">
+            <div style="max-width: 700px; display: block; margin: 0 auto; padding: 20px;">
+                <table width="100%" cellpadding="0" cellspacing="0" style="background: #fff; border: 1px solid #e9e9e9;">
+                    <tbody>
+                    <tr>
+                        <td bgcolor="#eee" style="padding: 5px 20px 5px 20px; background-color: #eee;">
+                            <div style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 20px; color: #777; font-weight: bold;">netdata notification</div>
+                        </td>
+                    </tr>
+                    <tr>
+                        <td bgcolor="${color}" style="font-size: 16px; vertical-align: top; font-weight: 400; text-align: center; margin: 0; padding: 10px; color: #ffffff; background: ${color} !important; border: 1px solid ${color}; border-top-color: ${color};" align="center" valign="top">
+                            <h1 style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-weight: 400; margin: 0;">${host} ${status_message}</h1>
+                        </td>
+                    </tr>
+                    <tr>
+                        <td style="vertical-align: top;" valign="top">
+                            <div style="margin: 0; padding: 20px; max-width: 700px;">
+                                <table width="100%" cellpadding="0" cellspacing="0" style="max-width:700px">
+                                    <tbody>
+                                    <tr>
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding:0 0 20px;" align="left" valign="top">
+                                            <span>${chart}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Chart</span>
+                                        </td>
+                                    </tr>
+                                    <tr>
+                                        <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>${value_string}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Value</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            <span><b>${alarm}</b>${info_html}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Alarm</span>
+                                        </td>
+                                    </tr>
+                                    <tr>
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            <span>${family}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Family</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top">
+                                            <span>${severity}</span>
+                                            <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Severity</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;" align="left" valign="top"><span>${date}</span>
+                                            <span>${raised_for_html}</span> <span style="display: block; color: #666666; font-size: 12px; font-weight: 300; line-height: 1; text-transform: uppercase;">Time</span>
+                                        </td>
+                                    </tr>
+                                    <tr style="margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; vertical-align: top; margin: 0; padding: 0 0 20px;">
+                                            <a href="${goto_url}" style="font-size: 14px; color: #ffffff; text-decoration: none; line-height: 1.5; font-weight: bold; text-align: center; display: inline-block; text-transform: capitalize; background: #35568d; border-width: 1px; border-style: solid; border-color: #2b4c86; margin: 0; padding: 10px 15px;" target="_blank">View Netdata</a>
+                                        </td>
+                                    </tr>
+                                    <tr style="text-align: center; margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 11px; vertical-align: top; margin: 0; padding: 10px 0 0 0; color: #666666;" align="center" valign="bottom">The source of this alarm is line <code>${src}</code><br/>(alarms are configurable, edit this file to adapt the alarm to your needs)
+                                        </td>
+                                    </tr>
+                                    <tr style="text-align: center; margin: 0; padding: 0;">
+                                        <td style="font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 12px; vertical-align: top; margin:0; padding: 20px 0 0 0; color: #666666; border-top: 1px solid #f0f0f0;" align="center" valign="bottom">Sent by
+                                            <a href="https://mynetdata.io/" target="_blank">netdata</a>, the real-time performance and health monitoring, on <code>${this_host}</code>.
+                                        </td>
+                                    </tr>
+                                    </tbody>
+                                </table>
+                            </div>
+                        </td>
+                    </tr>
+                    </tbody>
+                </table>
+            </div>
+        </td>
+    </tr>
+    </tbody>
+</table>
+</body>
+</html>
+--multipart-boundary--
+EOF
+
+SENT_EMAIL=$?
+
+# -----------------------------------------------------------------------------
+# let netdata know
+
+if [   ${SENT_EMAIL}        -eq 0 \
+    -o ${SENT_SYSLOG}       -eq 0 \
+    ]
+    then
+    # we did send something
+    exit 0
+fi
+
+# we did not send anything
+exit 1