check_celery

A Nagios NRPE plugin written in Python to monitor celery workers.

Requirements

• Python 2.7
• For RHEL distros:
  • yum install nagios nagios-devel nagios-plugins nagios-plugins-nrpe nrpe

Installation

• Copy check_celery.py to /usr/lib64/nagios/plugins
• chmod u+x /usr/lib64/nagios/plugins/check_celery.py
• chown nagios:nagios /usr/lib64/nagios/pluginscheck_celery.py
• Add command to nrpe.cfg:
  • command[check_celery]=/usr/bin/sudo /usr/lib64/nagios/plugins/check_celery.py $ARG1$
• Allow nrpe user to run the check with sudo without requiring a password
  • Use visudo command to edit /etc/sudoers and add following:

    Defaults:nrpe !requiretty
    nrpe    ALL=(ALL)   NOPASSWD:/usr/lib64/nagios/plugins/check_celery.py

Command Line Parameters

• Space separated list of worker node names to check
• --service - [optional] - Service script used to manage celery; defaults to "celeryd"

Example Usage

As standalone:

[user@host ~]# sudo ./check_celery.py atomic1 atomic2 periodic1
OK - All workers running

As NRPE plugin:

./check_nrpe -H localhost -c check_celery -a "atomic1 atomic2 periodic1 --service celeryd_scc"

Sample services.cfg

define service{
    use                 generic-service
    hostgroup_name	    celery_hosts
    service_description Check Celery Workers
    check_command	    check_nrpe!check_celery!"atomic1 atomic2 periodic1"
}

In order to pass arguments to the command being executed by check_nrpe, I'd recommend creating a new command, similar to the default chec_nrpe command:

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