munin_msteams_notify.sh

#!/bin/bash

# MsTeams notification script for Munin
# Nirmal Nath (@nkn1111)
#
# We use the slack module to post the alerts to Msteams webhook endpoint
# To use:
# 1) Create a new incoming webhook for MsTeams
# 2) Edit the Webhook URL for the variable 
# 3) Add the following to your munin configuration:
#
# # -- Slack contact configuration
# contact.slack.command MUNIN_SERVICESTATE="${var:worst}" MUNIN_HOST="${var:host}" MUNIN_SERVICE="${var:graph_title}" MUNIN_GROUP=${var:group} MUNIN_CONSOLE="https://munin.com/admin/munin/problems.html" /usr/local/bin/munin_msteams_notify.sh
# contact.slack.always_send warning critical
# # note: This has to be on one line for munin to parse properly
# contact.slack.text ${if:cfields \u000A* CRITICALs:${loop<,>:cfields  ${var:label} is ${var:value} (outside range [${var:crange}])${if:extinfo : ${var:extinfo}}}.}${if:wfields \u000A* WARNINGs:${loop<,>:wfields  ${var:label} is ${var:value} (outside range [${var:wrange}])${if:extinfo : ${var:extinfo}}}.}${if:ufields \u000A* UNKNOWNs:${loop<,>:ufields  ${var:label} is ${var:value}${if:extinfo : ${var:extinfo}}}.}${if:fofields \u000A* OKs:${loop<,>:fofields  ${var:label} is ${var:value}${if:extinfo : ${var:extinfo}}}.}


MSTEAMS_WEBHOOK_URL="https://outlook.office.com/webhook/your/msteams/webhook/endpoint"

input=`cat`

#Set the message icon based on service state
if [ "$MUNIN_SERVICESTATE" = "CRITICAL" ]
then
    ICON=":exclamation:"
    COLOR="8C1A1A"
elif [ "$MUNIN_SERVICESTATE" = "WARNING" ]
then
    ICON=":warning:"
    COLOR="FFA500"
elif [ "$MUNIN_SERVICESTATE" = "ok" ]
then
    ICON=":white_check_mark:"
    COLOR="2DC72D"
elif [ "$MUNIN_SERVICESTATE" = "OK" ]
then
    ICON=":white_check_mark:"
    COLOR="2DC72D"
elif [ "$MUNIN_SERVICESTATE" = "UNKNOWN" ]
then
    ICON=":question:"
    COLOR="808080"
else
    ICON=":white_medium_square:"
    COLOR="808080"
fi

# Generate the JSON payload
PAYLOAD="{\"@type\":\"MessageCard\",\"@context\":\"http://schema.org/extensions\",\"themeColor\":\"${COLOR}\",\"summary\":\"Munin alert\",\"title\":\"Munin alert - ${MUNIN_SERVICESTATE}: ${MUNIN_SERVICE} on ${MUNIN_HOST}\",\"sections\":[{\"activityTitle\":\"[View Munin Console](${MUNIN_CONSOLE})\",\"facts\":[{\"name\":\"Description\",\"value\":\"${MUNIN_SERVICE} execeeds threshold on ${MUNIN_HOST}\"},{\"name\":\"Severity\",\"value\":\"${MUNIN_SERVICESTATE}\"},{\"name\":\"Service\",\"value\":\"${MUNIN_SERVICE}\"},{\"name\":\"Current value\",\"value\":\"${input}\"}],\"markdown\":true}]}"

#Send message to Msteams
curl -sH 'Content-Type: application/json' -d "${PAYLOAD}" $MSTEAMS_WEBHOOK_URL