If you read the Monit documentation, it tells you exactly how to use Monit environment variables when using exec.
No environment variables are used by Monit. However, when Monit executes a start/stop/restart program or an exec action, it will set several environment variables which can be utilised by the executable to get information about the event, which triggered the action.
https://mmonit.com/monit/documentation/monit.html#ENVIRONMENT
I can be smart, but sometimes I can be daft. You don’t want to use the variables within your monit configuration, but instead, you want to use these variables in your exec script.
Here’s a great example of how to use $MONIT_EVENT. First set up a monit check
check system $HOST-steal
if cpu (steal) > 0.1% for 1 cycles
then exec "script.sh"
AND repeat every 10 cycles
Now here’s script.sh which will use $MONIT_EVENT
#!/bin/bash
echo "Monit Event: $MONIT_EVENT" | mail -s "$MONIT_EVENT" [email protected]I was in a rush and felt I had to post this to help others who might overlook this.