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Just my 2 cents:
UNIVENTION_NAGIOS uses check_univention_procs_name as plugin command. check_univention_procs_name itself just calls check_procs like this:

/usr/lib/nagios/plugins/check_procs -w $ARG1$ -c $ARG2$ -C $ARG3$

The arguments are defined at the LDAP object of the check UNIVENTION_NAGIOS and can be altered via the UMC. The default is:

1:1!1:!nscd

This means check_procs is called like this (the exclamation mark “!” is the separator here):

/usr/lib/nagios/plugins/check_procs -w 1:1 -c 1: -C nscd

And this translates to:

  • Generate a WARNING state if not exactly 1 process of nscd is running (the range is min:max)
  • Generate a CRITICAL state if no process of nscd is running (the given 1: means < 1)

With this knowledge we can add a custom Nagios check in the UMC, copy all the settings from UNIVENTION_NSCD but adjust the min:max range as we need it and link this new check to the UCS host. With a UCS system with one Docker App running an additional nscd, we probably want something like this:

/usr/lib/nagios/plugins/check_procs -w 2:2 -c 2: -C nscd

For the UMC entry plugin command parameter, this would be:

2:2!2:!nscd

Best regards,
Michael

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