]> arthur.barton.de Git - netdata.git/blobdiff - plugins.d/alarm-notify.sh
Merge pull request #1384 from ktsaou/master
[netdata.git] / plugins.d / alarm-notify.sh
index 30038eebde99329221b1762742a2c37872f6a17c..9f5ca1b09d0aae71ba2fc1fdfa406c5d06421aa4 100755 (executable)
 #!/usr/bin/env bash
 
-# (C) Costa Tsaousis
-# pushover support by Jan Arnold
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
+# GPL v3+
+#
+# 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
+#  - slack.com notifications
+#  - pushover.net notifications
+#  - pushbullet.com push notifications by Tiago Peralta @tperalta82 PR #1070
+#  - telegram.org notifications by @hashworks PR #1002
+#  - twilio.com notifications by Levi Blaney @shadycuz PR #1211
+#  - kafka notifications
+#  - pagerduty.com notifications by Jim Cooley @jimcooley PR #1373
 
-me="${0}"
+# -----------------------------------------------------------------------------
+# testing notifications
 
-if [ $(( ${BASH_VERSINFO[0]} )) -lt 4 ]
+if [ \( "${1}" = "test" -o "${2}" = "test" \) -a "${#}" -le 2 ]
 then
-    echo >&2
-    echo >&2 "$me: ERROR"
-    echo >&2 "BASH version 4 or later is required."
-    echo >&2 "You are running version: ${BASH_VERSION}"
-    echo >&2 "Please upgrade."
-    echo >&2
+    if [ "${2}" = "test" ]
+    then
+        recipient="${1}"
+    else
+        recipient="${2}"
+    fi
+
+    [ -z "${recipient}" ] && recipient="sysadmin"
+
+    id=1
+    last="CLEAR"
+    for x in "CRITICAL" "WARNING" "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"
+        if [ $? -ne 0 ]
+        then
+            echo >&2 "# FAILED"
+        else
+            echo >&2 "# OK"
+        fi
+
+        last="${x}"
+        id=$((id + 1))
+    done
+
     exit 1
 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=0
+debug() {
+    [ ${debug} -eq 1 ] && log DEBUG "${@}"
+}
+
+# -----------------------------------------------------------------------------
+
+# check for BASH v4+ (required for associative arrays)
+[ $(( ${BASH_VERSINFO[0]} )) -lt 4 ] && \
+    fatal "BASH version 4 or later is required (this is ${BASH_VERSION})."
+
+# -----------------------------------------------------------------------------
+# defaults to allow running this script by hand
+
+NETDATA_CONFIG_DIR="${NETDATA_CONFIG_DIR-/etc/netdata}"
+NETDATA_CACHE_DIR="${NETDATA_CACHE_DIR-/var/cache/netdata}"
+[ -z "${NETDATA_REGISTRY_URL}" ] && NETDATA_REGISTRY_URL="https://registry.my-netdata.io"
+[ -z "${NETDATA_HOSTNAME}" ] && NETDATA_HOSTNAME="$(hostname)"
+[ -z "${NETDATA_REGISTRY_HOSTNAME}" ] && NETDATA_REGISTRY_HOSTNAME="${NETDATA_HOSTNAME}"
+
 # -----------------------------------------------------------------------------
 # parse command line parameters
 
-recipient="${1}"   # the recepient of the email
-host="${2}"        # the host this event refers to
+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="${5}"    # the incremental id of the event, for this alarm
-when="${6}"        # the timestamp this event occured
+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, UNITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
 old_status="${11}" # the previous status: REMOVED, UNITIALIZED, UNDEFINED, CLEAR, WARNING, CRITICAL
-value="${12}"      # the current value
-old_value="${13}"  # the previous value
+value="${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="${15}"   # the duration in seconds the previous state took
-non_clear_duration="${16}" # the total duration in seconds this is non-clear
+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
 
@@ -44,20 +143,26 @@ info="${18}"       # a short description of the alarm
 # don't do anything if this is not WARNING, CRITICAL or CLEAR
 if [ "${status}" != "WARNING" -a "${status}" != "CRITICAL" -a "${status}" != "CLEAR" ]
 then
-    echo >&2 "${me}: not sending notification for ${status} on '${chart}.${name}'"
+    info "not sending notification for ${status} on '${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 "${status}" = "CLEAR" ]
 then
-    echo >&2 "${me}: not sending notification for ${status} on '${chart}.${name}' (last status was ${old_status})"
+    info "not sending notification for ${status} on '${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"
+
 # needed commands
 # if empty they will be searched in the system path
 curl=
@@ -66,7 +171,12 @@ sendmail=
 # enable / disable features
 SEND_SLACK="YES"
 SEND_PUSHOVER="YES"
+SEND_TWILIO="YES"
+SEND_TELEGRAM="YES"
 SEND_EMAIL="YES"
+SEND_PUSHBULLET="YES"
+SEND_KAFKA="YES"
+SEND_PD="YES"
 
 # slack configs
 SLACK_WEBHOOK_URL=
@@ -78,6 +188,31 @@ PUSHOVER_APP_TOKEN=
 DEFAULT_RECIPIENT_PUSHOVER=
 declare -A role_recipients_pushover=()
 
+# pushbullet configs
+PUSHBULLET_ACCESS_TOKEN=
+DEFAULT_RECIPIENT_PUSHBULLET=
+declare -A role_recipients_pushbullet=()
+
+# twilio configs
+TWILIO_ACCOUNT_SID=
+TWILIO_ACCOUNT_TOKEN=
+TWILIO_NUMBER=
+DEFAULT_RECIPIENT_TWILIO=
+declare -A role_recipients_twilio=()
+
+# telegram configs
+TELEGRAM_BOT_TOKEN=
+DEFAULT_RECIPIENT_TELEGRAM=
+declare -A role_recipients_telegram=()
+
+# kafka configs
+KAFKA_URL=
+KAFKA_SENDER_IP=
+
+# pagerduty.com configs
+PD_SERVICE_KEY=
+declare -A role_recipients_pd=()
+
 # email configs
 DEFAULT_RECIPIENT_EMAIL="root"
 declare -A role_recipients_email=()
@@ -90,30 +225,119 @@ if [ -f "${NETDATA_CONFIG_DIR}/health_alarm_notify.conf" ]
 fi
 
 # -----------------------------------------------------------------------------
-# find the recipient's addresses per method
+# 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="${s^^}"
+    [ "${s}" != "CRITICAL" ] && return 0
+
+    # the new or the old status matches the severity
+    if [ "${s}" = "${status}" -o "${s}" = "${old_status}" ]
+        then
+        [ ! -d "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}" ] && \
+            mkdir -p "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}"
+
+        # we need to keep track of the notifications we sent
+        # so that the same user will receive the recovery
+        # even if old_status does not match the required severity
+        touch "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}"
+        return 0
+    fi
+
+    # it is a cleared alarm we have sent notification for
+    if [ "${status}" != "WARNING" -a "${status}" != "CRITICAL" -a -f "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}" ]
+        then
+        rm "${NETDATA_CACHE_DIR}/alarm-notify/${method}/${r}/${alarm_id}"
+        return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# find the recipients' addresses per method
 
 declare -A arr_slack=()
 declare -A arr_pushover=()
+declare -A arr_pushbullet=()
+declare -A arr_twilio=()
+declare -A arr_telegram=()
+declare -A arr_pd=()
 declare -A arr_email=()
 
-# netdata may call us with multiple recipients
-# so, here we find the unique ones
-for x in ${recipient//,/ }
+# netdata may call us with multiple roles, and roles may have multiple but
+# overlapping recipients - so, here we find the unique recipients.
+for x in ${roles//,/ }
 do
+    # the roles 'silent' and 'disabled' mean:
+    # don't send a notification for this role
+    [ "${x}" = "silent" -o "${x}" = "disabled" ] && continue
+
     # email
-    a="${role_recipients_email[${recipient}]}"
+    a="${role_recipients_email[${x}]}"
     [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_EMAIL}"
-    for r in ${a//,/ }; do arr_email[${r}]="1"; done
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality email "${r}" && arr_email[${r/|*/}]="1"
+    done
 
     # pushover
-    a="${role_recipients_pushover[${recipient}]}"
+    a="${role_recipients_pushover[${x}]}"
     [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_PUSHOVER}"
-    for r in ${a//,/ }; do arr_pushover[${r}]="1"; done
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality pushover "${r}" && arr_pushover[${r/|*/}]="1"
+    done
+
+    # pushbullet
+    a="${role_recipients_pushbullet[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_PUSHBULLET}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality pushbullet "${r}" && arr_pushbullet[${r/|*/}]="1"
+    done
+
+    # twilio
+    a="${role_recipients_twilio[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_TWILIO}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality twilio "${r}" && arr_twilio[${r/|*/}]="1"
+    done
+
+    # telegram
+    a="${role_recipients_telegram[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_TELEGRAM}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality telegram "${r}" && arr_telegram[${r/|*/}]="1"
+    done
 
     # slack
-    a="${role_recipients_slack[${recipient}]}"
+    a="${role_recipients_slack[${x}]}"
     [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_SLACK}"
-    for r in ${a//,/ }; do arr_slack[${r}]="1"; done
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality slack "${r}" && arr_slack[${r/|*/}]="1"
+    done
+
+    # pagerduty.com
+    a="${role_recipients_pd[${x}]}"
+    [ -z "${a}" ] && a="${DEFAULT_RECIPIENT_PD}"
+    for r in ${a//,/ }
+    do
+        [ "${r}" != "disabled" ] && filter_recipient_by_criticality pd "${r}" && arr_pd[${r/|*/}]="1"
+    done
 done
 
 # build the list of slack recipients (channels)
@@ -124,14 +348,30 @@ to_slack="${!arr_slack[*]}"
 to_pushover="${!arr_pushover[*]}"
 [ -z "${to_pushover}" ] && SEND_PUSHOVER="NO"
 
+# build the list of pushbulet recipients (user tokens)
+to_pushbullet="${!arr_pushbullet[*]}"
+[ -z "${to_pushbullet}" ] && SEND_PUSHBULLET="NO"
+
+# build the list of twilio recipients (phone numbers)
+to_twilio="${!arr_twilio[*]}"
+[ -z "${to_twilio}" ] && SEND_TWILIO="NO"
+
+# check array of telegram recipients (chat ids)
+to_telegram="${!arr_telegram[*]}"
+[ -z "${to_telegram}" ] && SEND_TELEGRAM="NO"
+
+# build the list of pagerduty recipients (service keys)
+to_pd="${!arr_pd[*]}"
+[ -z "${to_pd}" ] && SEND_PD="NO"
+
 # build the list of email recipients (email addresses)
 to_email=
-for x in "${!arr_email[*]}"
+for x in "${!arr_email[@]}"
 do
     [ ! -z "${to_email}" ] && to_email="${to_email}, "
     to_email="${to_email}${x}"
 done
-[ -z "${to_email}" ] && to_email="root"
+[ -z "${to_email}" ] && SEND_EMAIL="NO"
 
 
 # -----------------------------------------------------------------------------
@@ -143,16 +383,50 @@ done
 # check pushover
 [ -z "${PUSHOVER_APP_TOKEN}" ] && SEND_PUSHOVER="NO"
 
-if [ \( "${SEND_PUSHOVER}" = "YES" -o "${SEND_SLACK}" = "YES" \) -a -z "${curl}" ]
+# check pushbullet
+[ -z "${PUSHBULLET_ACCESS_TOKEN}" ] && SEND_PUSHBULLET="NO"
+
+# check twilio
+[ -z "${TWILIO_ACCOUNT_TOKEN}" -o -z "${TWILIO_ACCOUNT_SID}" -o -z "${TWILIO_NUMBER}" ] && SEND_TWILIO="NO"
+
+# check telegram
+[ -z "${TELEGRAM_BOT_TOKEN}" ] && SEND_TELEGRAM="NO"
+
+# check kafka
+[ -z "${KAFKA_URL}" -o -z "${KAFKA_SENDER_IP}" ] && SEND_KAFKA="NO"
+
+# check pagerduty.com
+# if we need pd-send, check for the pd-send command
+# https://www.pagerduty.com/docs/guides/agent-install-guide/
+if [ "${SEND_PD}" = "YES" ]
+    then
+    pd_send="$(which pd-send 2>/dev/null || command -v pd-send 2>/dev/null)"
+    if [ -z "${pd_send}" ]
+        then
+        # no pd-send available
+        # disable pagerduty.com
+        SEND_PD="NO"
+    fi
+fi
+
+# if we need curl, check for the curl command
+if [ \( "${SEND_PUSHOVER}" = "YES" -o "${SEND_SLACK}" = "YES" -o "${SEND_TWILIO}" = "YES" -o "${SEND_TELEGRAM}" = "YES" -o "${SEND_PUSHBULLET}" = "YES" -o "${SEND_KAFKA}" = "YES" \) -a -z "${curl}" ]
     then
     curl="$(which curl 2>/dev/null || command -v curl 2>/dev/null)"
     if [ -z "${curl}" ]
         then
+        # no curl available
+        # disable all curl based methods
         SEND_PUSHOVER="NO"
+        SEND_PUSHBULLET="NO"
+        SEND_TELEGRAM="NO"
         SEND_SLACK="NO"
+        SEND_TWILIO="NO"
+        SEND_KAFKA="NO"
     fi
 fi
 
+# if we need sendmail, check for the sendmail command
 if [ "${SEND_EMAIL}" = "YES" -a -z "${sendmail}" ]
     then
     sendmail="$(which sendmail 2>/dev/null || command -v sendmail 2>/dev/null)"
@@ -160,14 +434,21 @@ if [ "${SEND_EMAIL}" = "YES" -a -z "${sendmail}" ]
 fi
 
 # check that we have at least a method enabled
-if [ "${SEND_EMAIL}" != "YES" -a "${SEND_PUSHOVER}" != "YES" -a "${SEND_SLACK}" != "YES" ]
+if [   "${SEND_EMAIL}"      != "YES" \
+    -a "${SEND_PUSHOVER}"   != "YES" \
+    -a "${SEND_TELEGRAM}"   != "YES" \
+    -a "${SEND_SLACK}"      != "YES" \
+    -a "${SEND_TWILIO}"     != "YES" \
+    -a "${SEND_PUSHBULLET}" != "YES" \
+    -a "${SEND_KAFKA}"      != "YES" \
+    -a "${SEND_PD}"         != "YES" \
+    ]
     then
-    echo >&2 "I don't have a means to send a notification. Sorry!"
-    exit 1
+    fatal "All notification methods are disabled. Not sending notification to '${roles}' for '${name}' = '${value}' of chart '${chart}' for status '${status}'."
 fi
 
 # -----------------------------------------------------------------------------
-# get the system hostname
+# find a suitable hostname to use, if netdata did not supply a hostname
 
 [ -z "${host}" ] && host="${NETDATA_HOSTNAME}"
 [ -z "${host}" ] && host="${NETDATA_REGISTRY_HOSTNAME}"
@@ -180,7 +461,7 @@ date="$(date --date=@${when} 2>/dev/null)"
 [ -z "${date}" ] && date="$(date 2>/dev/null)"
 
 # -----------------------------------------------------------------------------
-# URL encode a string
+# function to URL encode a string
 
 urlencode() {
     local string="${1}" strlen encoded pos c o
@@ -188,14 +469,14 @@ urlencode() {
     strlen=${#string}
     for (( pos=0 ; pos<strlen ; pos++ ))
     do
-        c=${string:$pos:1}
-        case "$c" in
+        c=${string:${pos}:1}
+        case "${c}" in
             [-_.~a-zA-Z0-9])
                 o="${c}"
                 ;;
 
             *)
-                printf -v o '%%%02x' "'$c"
+                printf -v o '%%%02x' "'${c}"
                 ;;
         esac
         encoded+="${o}"
@@ -206,7 +487,7 @@ urlencode() {
 }
 
 # -----------------------------------------------------------------------------
-# convert a duration in seconds, to a human readable duration
+# function to convert a duration in seconds, to a human readable duration
 # using DAYS, MINUTES, SECONDS
 
 duration4human() {
@@ -270,12 +551,12 @@ send_email() {
         "${sendmail}" -t
         ret=$?
 
-        if [ $ret -eq 0 ]
+        if [ ${ret} -eq 0 ]
         then
-            echo >&2 "${me}: Sent email notification for: ${host} ${chart}.${name} is ${status} to '${to_email}'"
+            info "sent email notification for: ${host} ${chart}.${name} is ${status} to '${to_email}'"
             return 0
         else
-            echo >&2 "${me}: Failed to send email notification for: ${host} ${chart}.${name} is ${status} to '${to_email}' with error code ${ret}."
+            error "failed to send email notification for: ${host} ${chart}.${name} is ${status} to '${to_email}' with error code ${ret}."
             return 1
         fi
     fi
@@ -292,8 +573,14 @@ send_pushover() {
     if [ "${SEND_PUSHOVER}" = "YES" -a ! -z "${apptoken}" -a ! -z "${usertokens}" -a ! -z "${title}" -a ! -z "${message}" ]
         then
 
-        priority=0
-        [ "${status}" = "CRITICAL" ] && priority=1
+        # https://pushover.net/api
+        priority=-2
+        case "${status}" in
+            CLEAR) priority=-1;;   # low priority: no sound or vibration
+            WARNING) priotity=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
@@ -311,10 +598,10 @@ send_pushover() {
 
             if [ "${httpcode}" == "200" ]
             then
-                echo >&2 "${me}: Sent pushover notification for: ${host} ${chart}.${name} is ${status} to '${user}'"
+                info "sent pushover notification for: ${host} ${chart}.${name} is ${status} to '${user}'"
                 sent=$((sent + 1))
             else
-                echo >&2 "${me}: Failed to send pushover notification for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
+                error "failed to send pushover notification for: ${host} ${chart}.${name} is ${status} to '${user}' with HTTP error code ${httpcode}."
             fi
         done
 
@@ -325,33 +612,182 @@ send_pushover() {
 }
 
 # -----------------------------------------------------------------------------
-# slack sender
+# pushbullet sender
 
-send_slack() {
-    local webhook="${1}" channels="${2}" when="${3}" username="${4}" image="${5}" author="${6}" httpcode sent=0 channel color
+send_pushbullet() {
+    local userapikey="${1}" recipients="${2}"  title="${3}" message="${4}" httpcode sent=0 user
+    if [ "${SEND_PUSHBULLET}" = "YES" -a ! -z "${userapikey}" -a ! -z "${recipients}" -a ! -z "${message}" -a ! -z "${title}" ]
+        then
+        #https://docs.pushbullet.com/#create-push
+        for user in ${recipients}
+        do
+            httpcode=$(${curl} --write-out %{http_code} --silent --output /dev/null \
+              --header 'Access-Token: '${userapikey}'' \
+              --header 'Content-Type: application/json' \
+              --data-binary  @<(cat <<EOF
+                              {"title": "${title}",
+                              "type": "note",
+                              "email": "${user}",
+                              "body": "$( echo -n ${message})"}
+EOF
+               ) "https://api.pushbullet.com/v2/pushes" -X POST)
+
+            if [ "${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
 
-    if [ "${SEND_SLACK}" = "YES" -a ! -z "${webhook}" -a ! -z "${channels}" -a ! -z "${username}" -a ! -z "${image}" -a ! -z "${author}" ]
+send_kafka() {
+    local httpcode sent=0 
+    if [ "${SEND_KAFKA}" = "YES" ]
         then
+            httpcode=$(${curl} -X POST --write-out %{http_code} --silent --output /dev/null \
+                --data "{host_ip:\"${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}")
 
-        case "${status}" in
-            WARNING) color="warning" ;;
-            CRITICAL) color="danger" ;;
-            CLEAR) color="good" ;;
-            *) color="#777777" ;;
-        esac
+            if [ "${httpcode}" == "204" ]
+            then
+                info "sent kafka data for: ${host} ${chart}.${name} is ${status} and ip '${KAFKA_SENDER_IP}'"
+                sent=$((sent + 1))
+            else
+                error "failed to send kafka data for: ${host} ${chart}.${name} is ${status} and ip '${KAFKA_SENDER_IP}' with HTTP error code ${httpcode}."
+            fi
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# pagerduty.com sender
+
+send_pd() {
+    local recipients="${1}" sent=0
+    unset t
+    case ${status} in
+        CLEAR)    t='resolve';;
+        WARNING)  t='trigger';;
+        CRITICAL) t='trigger';;
+    esac
+
+    if [ ${SEND_PD} = "YES" -a ! -z "${t}" ]
+        then
+        for PD_SERVICE_KEY in ${recipients}
+        do
+            d="${status} ${name}=${value} ${units} - ${host}, ${family}"
+            ${pd_send} -k ${PD_SERVICE_KEY} \
+                       -t ${t} \
+                       -d "${d}" \
+                       -i ${alarm_id} \
+                       -f 'info'="${info}" \
+                       -f 'value_w_units'="${value} ${units}" \
+                       -f 'when'="${when}" \
+                       -f 'duration'="${duration}" \
+                       -f 'roles'="${roles}" \
+                       -f 'host'="${host}" \
+                       -f 'unique_id'="${unique_id}" \
+                       -f 'alarm_id'="${alarm_id}" \
+                       -f 'event_id'="${event_id}" \
+                       -f 'name'="${name}" \
+                       -f 'chart'="${chart}" \
+                       -f 'family'="${family}" \
+                       -f 'status'="${status}" \
+                       -f 'old_status'="${old_status}" \
+                       -f 'value'="${value}" \
+                       -f 'old_value'="${old_value}" \
+                       -f 'src'="${src}" \
+                       -f 'non_clear_duration'="${non_clear_duration}" \
+                       -f 'units'="${units}"
+            retval=$?
+            if [ ${retval} -eq 0 ]
+                then
+                    info "sent pagerduty.com notification using service key ${PD_SERVICE_KEY::-26}....: ${d}"
+                    sent=$((sent + 1))
+                else
+                    error "failed to send pagerduty.com notification using service key ${PD_SERVICE_KEY::-26}.... (error code ${retval}): ${d}"
+            fi
+        done
+
+        [ ${sent} -gt 0 ] && return 0
+    fi
+
+    return 1
+}
+
+# -----------------------------------------------------------------------------
+# twilio sender
+
+send_twilio() {
+    local accountsid="${1}" accounttoken="${2}" twilionumber="${3}" recipients="${4}"  title="${5}" message="${6}" httpcode sent=0 user
+    if [ "${SEND_TWILIO}" = "YES" -a ! -z "${accountsid}" -a ! -z "${accounttoken}" -a ! -z "${twilionumber}" -a ! -z "${recipients}" -a ! -z "${message}" -a ! -z "${title}" ]
+        then
+        #https://www.twilio.com/packages/labs/code/bash/twilio-sms
+        for user in ${recipients}
+        do
+            httpcode=$(${curl} -X POST --write-out %{http_code} --silent --output /dev/null \
+                --data-urlencode "From=${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
+}
+
+# -----------------------------------------------------------------------------
+# telegram sender
 
-        for channel in ${channels}
+send_telegram() {
+    local bottoken="${1}" chatids="${2}" message="${3}" httpcode sent=0 chatid disableNotification=""
+
+    if [ "${status}" = "CLEAR" ]; then disableNotification="--data-urlencode disable_notification=true"; fi
+
+    if [ "${SEND_TELEGRAM}" = "YES" -a ! -z "${bottoken}" -a ! -z "${chatids}" -a ! -z "${message}" ];
+    then
+        for chatid in ${chatids}
         do
-            httpcode=$(${curl} --write-out %{http_code} --silent --output /dev/null -X POST --data-urlencode \
-                "payload={\"channel\": \"#${channel}\", \"username\": \"${username}\", \"text\": \"${host} ${status_message} - ${author} ${raised_for} - click <${goto_url}|here> to view the netdata dashboard.\", \"icon_url\": \"${image}\", \"attachments\": [{\"fallback\": \"${alarm} - ${info}\", \"color\": \"${color}\", \"title\": \"${alarm}\", \"title_link\": \"${goto_url}\", \"text\": \"${info}\", \"footer\": \"netdata\", \"footer_icon\": \"${NETDATA_REGISTRY_URL}/images/seo-performance-128.png\", \"ts\": ${when}}]}" \
-                "${webhook}")
+            # https://core.telegram.org/bots/api#sendmessage
+            httpcode=$(${curl} --write-out %{http_code} --silent --output /dev/null ${disableNotification} \
+                --data-urlencode "parse_mode=HTML" \
+                --data-urlencode "disable_web_page_preview=true" \
+                --data-urlencode "text=${message}" \
+                "https://api.telegram.org/bot${bottoken}/sendMessage?chat_id=${chatid}")
 
             if [ "${httpcode}" == "200" ]
             then
-                echo >&2 "${me}: Sent slack notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+                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
-                echo >&2 "${me}: Failed to send slack notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+                error "failed to send telegram notification for: ${host} ${chart}.${name} is ${status} to '${chatid}' with HTTP error code ${httpcode}."
             fi
         done
 
@@ -361,6 +797,70 @@ send_slack() {
     return 1
 }
 
+# -----------------------------------------------------------------------------
+# slack sender
+
+send_slack() {
+    local webhook="${1}" channels="${2}" httpcode sent=0 channel color payload
+
+    [ "${SEND_SLACK}" != "YES" ] && return 1
+
+    case "${status}" in
+        WARNING)  color="warning" ;;
+        CRITICAL) color="danger" ;;
+        CLEAR)    color="good" ;;
+        *)        color="#777777" ;;
+    esac
+
+    for channel in ${channels}
+    do
+        payload="$(cat <<EOF
+        {
+            "channel": "#${channel}",
+            "username": "netdata on ${host}",
+            "icon_url": "${images_base_url}/images/seo-performance-128.png",
+            "text": "${host} ${status_message}, \`${chart}\` (_${family}_), *${alarm}*",
+            "attachments": [
+                {
+                    "fallback": "${alarm} - ${chart} (${family}) - ${info}",
+                    "color": "${color}",
+                    "title": "${alarm}",
+                    "title_link": "${goto_url}",
+                    "text": "${info}",
+                    "fields": [
+                        {
+                            "title": "${chart}",
+                            "short": true
+                        },
+                        {
+                            "title": "${family}",
+                            "short": true
+                        }
+                    ],
+                    "thumb_url": "${image}",
+                    "footer": "<${goto_url}|${host}>",
+                    "ts": ${when}
+                }
+            ]
+        }
+EOF
+        )"
+
+        httpcode=$(${curl} --write-out %{http_code} --silent --output /dev/null -X POST --data-urlencode "payload=${payload}" "${webhook}")
+        if [ "${httpcode}" == "200" ]
+        then
+            info "sent slack notification for: ${host} ${chart}.${name} is ${status} to '${channel}'"
+            sent=$((sent + 1))
+        else
+            error "failed to send slack notification for: ${host} ${chart}.${name} is ${status} to '${channel}', with HTTP error code ${httpcode}."
+        fi
+    done
+
+    [ ${sent} -gt 0 ] && return 0
+
+    return 1
+}
+
 
 # -----------------------------------------------------------------------------
 # prepare the content of the notification
@@ -378,7 +878,7 @@ 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}"
+raised_for="(was ${old_status,,} for ${duration_txt})"
 
 # the key status message
 status_message="status unknown"
@@ -390,45 +890,45 @@ color="grey"
 alarm="${name//_/ } = ${value} ${units}"
 
 # the image of the alarm
-image="${NETDATA_REGISTRY_URL}/images/seo-performance-128.png"
+image="${images_base_url}/images/seo-performance-128.png"
 
 # prepare the title based on status
 case "${status}" in
        CRITICAL)
-        image="${NETDATA_REGISTRY_URL}/images/alert-128-red.png"
+        image="${images_base_url}/images/alert-128-red.png"
         status_message="is critical"
         color="#ca414b"
         ;;
 
     WARNING)
-        image="${NETDATA_REGISTRY_URL}/images/alert-128-orange.png"
+        image="${images_base_url}/images/alert-128-orange.png"
         status_message="needs attention"
         color="#caca4b"
                ;;
 
        CLEAR)
-        image="${NETDATA_REGISTRY_URL}/images/check-mark-2-128-green.png"
+        image="${images_base_url}/images/check-mark-2-128-green.png"
        status_message="recovered"
                color="#77ca6d"
-
-               # don't show the value when the status is CLEAR
-               # for certain alarms, this value might not have any meaning
-               alarm="${name//_/ }"
                ;;
 esac
 
 if [ "${status}" = "CLEAR" ]
 then
     severity="Recovered from ${old_status}"
-    if [ $non_clear_duration -gt $duration ]
+    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 ]
+    if [ ${non_clear_duration} -gt ${duration} ]
     then
         raised_for="(alarm is raised for ${non_clear_duration_txt})"
     fi
@@ -436,7 +936,7 @@ then
 elif [ "${old_status}" = "CRITICAL" -a "${status}" = "WARNING" ]
 then
     severity="Demoted to ${status}"
-    if [ $non_clear_duration -gt $duration ]
+    if [ ${non_clear_duration} -gt ${duration} ]
     then
         raised_for="(alarm is raised for ${non_clear_duration_txt})"
     fi
@@ -458,7 +958,7 @@ raised_for_html=
 # slack aggregates posts from the same username
 # so we use "${host} ${status}" as the bot username, to make them diff
 
-send_slack "${SLACK_WEBHOOK_URL}" "${to_slack}" "${when}" "${host} ${status}" "${image}" "${chart} (${family})"
+send_slack "${SLACK_WEBHOOK_URL}" "${to_slack}"
 SENT_SLACK=$?
 
 # -----------------------------------------------------------------------------
@@ -476,6 +976,55 @@ send_pushover "${PUSHOVER_APP_TOKEN}" "${to_pushover}" "${when}" "${goto_url}" "
 
 SENT_PUSHOVER=$?
 
+# -----------------------------------------------------------------------------
+# send the pushbullet notification
+
+send_pushbullet "${PUSHBULLET_ACCESS_TOKEN}" "${to_pushbullet}" "${host} ${status_message} - ${name//_/ } - ${chart}" "${alarm}\n
+Severity: ${severity}\n
+Chart: ${chart}\n
+Family: ${family}\n
+To View Netdata go to: ${goto_url}\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=$?
+
+# -----------------------------------------------------------------------------
+# send the telegram.org message
+
+# https://core.telegram.org/bots/api#formatting-options
+send_telegram "${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 email
 
@@ -574,8 +1123,19 @@ SENT_EMAIL=$?
 # -----------------------------------------------------------------------------
 # let netdata know
 
-# we did send somehting
-[ ${SENT_EMAIL} -eq 0 -o ${SENT_PUSHOVER} -eq 0 -o ${SENT_SLACK} -eq 0 ] && exit 0
+if [   ${SENT_EMAIL}      -eq 0 \
+    -o ${SENT_PUSHOVER}   -eq 0 \
+    -o ${SENT_TELEGRAM}   -eq 0 \
+    -o ${SENT_SLACK}      -eq 0 \
+    -o ${SENT_TWILIO}     -eq 0 \
+    -o ${SENT_PUSHBULLET} -eq 0 \
+    -o ${SENT_KAFKA}      -eq 0 \
+    -o ${SENT_PD}         -eq 0 \
+    ]
+    then
+    # we did send something
+    exit 0
+fi
 
 # we did not send anything
 exit 1