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Nagios to post alerts into a Slack channel # using the Incoming WebHooks integration
#!/bin/bash
# This script is used by Nagios to post alerts into a Slack channel
# using the Incoming WebHooks integration. Create the channel, botname
# and integration first and then add this notification script in your
# Nagios configuration.
#
# All variables that start with NAGIOS_ are provided by Nagios as
# environment variables when an notification is generated.
# A list of the env variables is available here:
# http://nagios.sourceforge.net/docs/3_0/macrolist.html
#
# My info
# Website: bytesunlimited.com
# GitHub: https://github.com/BytesUnlimited
#
#### Config Examples:
#
## Commands Definition:
# # 'notify-host-by-slack' command definition
# define command{
# command_name notify-host-by-slack
# command_line /usr/lib64/nagios/plugins/nagios-slack-alert.sh "$HOSTNAME$" "N/A" "$HOSTSTATE$" "$HOSTOUTPUT$" "$NOTIFICATIONTYPE$"
# }
#
# # 'notify-service-by-slack' command definition
# define command{
# command_name notify-service-by-slack
# command_line /usr/lib64/nagios/plugins/nagios-slack-alert.sh "$HOSTNAME$" "$SERVICEDESC$" "$SERVICESTATE$" "$SERVICEOUTPUT$" "$NOTIFICATIONTYPE$"
#
## Contacts Example:
# define contact {
# contact_name slack-default
# alias Slack Default
# service_notification_period 24x7
# host_notification_period 24x7
# service_notification_options w,u,c,r
# host_notification_options d,r
# service_notification_commands notify-service-by-slack
# host_notification_commands notify-host-by-slack
# }
#
## Contact Group Example:
# define contactgroup{
# contactgroup_name slacknotificationsgroup
# alias Slack Default Notifications
# members slack-default
# }
#
## Service Example:
# define service{
# use default-service
# service_description Check Example Command Description
# check_command check_example_command
# contact_groups slacknotificationsgroup
# host_name server-name
# }
#
#Modify these variables for your environment
MY_NAGIOS_HOSTNAME="MY-IP-OR-Domain-Name"
MY_NAGIOS_STATUS_URL="https://${MY_NAGIOS_HOSTNAME}/nagios/cgi-bin/status.cgi?host=${NAGIOS_HOSTNAME}"
SLACK_HOSTNAME="SLACK-EXTENSION.slack.com"
SLACK_CHANNEL="#CHANNEL-NAME"
SLACK_BOTNAME="Nagios Alerts"
WEBHOOKS_INTEGRATION_URL="https://hooks.slack.com/services/CHANGE-ME/CHANGE-ME/CHANGE-ME"
NAGIOS_SERVICESTATE="@3"
#Set the message icon based on Nagios service state
if [ "$NAGIOS_SERVICESTATE" = "CRITICAL" ]
then
ICON=":banging-head:"
COLOR="danger"
elif [ "$NAGIOS_SERVICESTATE" = "WARNING" ]
then
ICON=":face_with_head_bandage:"
COLOR="warning"
elif [ "$NAGIOS_SERVICESTATE" = "OK" ]
then
ICON=":excellent:"
COLOR="good"
elif [ "$NAGIOS_SERVICESTATE" = "UNKNOWN" ]
then
ICON=":question:"
COLOR="#00FFFF"
else
ICON=":facepalm:"
COLOR="#FFFFFF"
fi
#Send message to Slack using Incoming WebHooks Integration:
curl -X POST --data "payload={\"channel\": \"${SLACK_CHANNEL}\", \"username\": \"${SLACK_BOTNAME}\", \"icon_url\": \"https://slack.com/img/services/nagios_48.png\", \"text\": \"${ICON} HOST: ${1} SERVICE: ${2} MESSAGE: ${4} <${MY_NAGIOS_STATUS_URL}|See Nagios>\"}" $WEBHOOKS_INTEGRATION_URL
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