I plan to use program check, with it's exit code I can force monit to send alert mail message, ok. But how to include into that message some output produced by checking program?
I could modify program to write it's output in some file but how to tell monit to use this file during message composing?
There is something description field in mail-format, is it suitable for this purpose?
From monit's docs:
The subject and body may contain $NAME variables, which are expanded by Monit. Here is a list of variables that can be used when composing an alert message
…
$DESCRIPTION The description of the error condition
