Nagios plugin to monitor FreeSWITCH

Question

I am trying to configure Nagios to monitor FreeSWITCH as mentioned at https://github.com/kjhosein/nagios-freeswitch-plugin .

I have downloaded the script from git and followed listed steps.

On remote (NRPE) server I have added below line in nrpe.cfg file

command[check_freeswitch_health]=/usr/lib64/nagios/plugins/check_freeswitch_health.pl $ARG1$

On Nagios server,added in commands.cfg file

define command {
    command_name    check_freeswitch_health
    command_line    $USER1$/check_nrpe -H $HOSTADDRESS$ -c check_freeswitch_health $ARG1$
  }

and in services.cfg file

define service {
    host_name       freeswitch01
    service_description     FreeSWITCH - Calls Count
    check_command   check_freeswitch_health!-a '-q show-calls-count'!!!!!!!
  }

But on Nagios web interface I am getting

CHECK_NRPE: Received 0 bytes from daemon. Check the remote server logs for error messages.

On remote server, logs(/var/log/syslog) showing below error

Request contained command arguments!
Client request was invalid, bailing out...

What I am missing here ? Can anyone please assist me with correct configurations ?

Thanks,

Rutu

Keith · Answer 1 · 2016-01-20T16:25:36.670

Make sure you can run that perl script locally, as the nagios/nrpe user.
Make sure that perl script doesn't depend on ENV (e.g., $PATH). Verify by running through env -i /usr/lib64/nagios/plugins/check_freeswitch_health.pl ...
Use your generic check_nrpe command definition, instead of writing a check_{whatever} for every different NRPE command you want to run.
To pass args with -a, you must enable command arguments in nrpe.cfg by setting dont_blame_nrpe=1

For example, if your check_nrpe command looks like this:

define command {
    command_name    check_nrpe
    command_line    $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$ -a $ARG2$
}

Then your service definition would be:

define service {
    host_name       freeswitch01
    service_description     FreeSWITCH - Calls Count
    check_command   check_nrpe!check_freeswitch_health!-q show-calls-count
}

(Why do you have !!!!!!! at the end of your command?)

Or, if the only option you ever pass to that perl script is -q, you can put it in the command definition in the NRPE config:

command[check_freeswitch_health]=/usr/lib64/nagios/plugins/check_freeswitch_health.pl -q $ARG1$

Then your check_command would be just check_nrpe!check_freeswitch_health!show-calls-count

Hi Keith, Thank you for detailed explanation to my query. 1.Make sure you can run that perl script locally, as the nagios/nrpe user. >>How can I check that perl script is run as nagios/nrpe user? 2.Make sure that perl script doesn't depend on ENV (e.g., $PATH). >>When I run env -i /usr/lib/nagios/plugins/check_freeswitch_health.pl -q show-calls-count on nrpe server,it gives: REESWITCH_HEALTH OK - Result of check is: 0 total. | show-calls-count=0;; — Rutu, Jan 20 '16 at 05:40
3.Use your generic check_nrpe command definition, instead of writing a check_{whatever} for every different NRPE command you want to run. >> I have tried as you have suggested but still getting same issue. I have script check_freeswitch_health.pl at /usr/lib/nagios/plugins/ Is there any specific steps to install nagios-freeswitch-plugin ? — Rutu, Jan 20 '16 at 05:56
Added a step 4 for you ;-) Not sure how I missed this the first time, sorry. — Keith, Jan 20 '16 at 16:25

Nagios plugin to monitor FreeSWITCH

1 Answers1