Testing custom notification (notification.py) not wokring

Troubleshooting
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**CMK version: 1.7.12 **

Hi, i have created a python custom notification script to create tickets on BMC via REST API, so the usecase is that when host state changes from up to down or unreachable, it should create a ticket on BMC!

I tried running it on CLI as follows, and it works (created ticket), but when i tried using testing it from checkmk GUI via test notification, it doesnot works (not creating tikcet), what could be the reason? is this the bug in Checkmk, or i am missing something? Also, could anyone guide me how i can use and create my own env variables in my python script for this? i want to ceate a parameter “host_group” in checkmk and want to access it in my script!

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If you put your hosts in host groups, then that membership is automatically reflected in the environment variable NOTIFY_HOSTGROUPNAMES. You don’t need to do anything for that.

For example, I put a host into the two groups grp_1 and grp_2:

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… and the notification script is then automatically called with the following variable:

NOTIFY_HOSTGROUPNAMES=grp_2,grp_1

I suggest you first use this simple script as a notification script to see what variables are automatically set by checkmk. There are about 100 variables and they all start with NOTIFY_

#!/bin/sh
# Notification Inspector (save environment to ~/tmp)

env | sort > $OMD_ROOT/tmp/notify-env.out
exit 0;

As to why your script doesn’t get called is hard to tell without knowing how you configured the notification process.

Again, I would suggest you first try the environment printer script from above and configure a notification rule for one specific contact and without further conditions:

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Then fake the result of any of your services or hosts via “fake check result” and check the file $OMD_ROOT/tmp/notify-env.out.

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