Labs Nagios Builder

Simple python script to grab labs instances from ldap and build Nagios configs for them.

Using a Puppet classes to determine hostgroups and services to monitor.

How to set this up?

• Clone the git repo (over http) out onto the server, we keep it in /root/

• Setup a crontab with the following (/etc/crontab)

  */5 * * * * root cd /root/nagios-builder/labsnagiosbuilder/ && (git reset --hard; git pull origin master; ./build.py --ignored-hosts=/root/nagios-builder/labsnagiosbuilder/wmflabs-ignored.host >> /var/log/nagios.log 2>&1)

• This will cause the repo to be reset, updated and then the build script run every 5min

• All reloading etc of icinga will happen based on changes

How to add a check

• Create or modify the relevant role file
• Provide any additional info in classes.ini

Puppet classes map 1-1 with / replacing :: ie role::lucene::front_end::poolbeta -> templates/classes/role/lucene/front_end/poolbeta.cfg

How to ignore an instance

• Create an entry in wmflabs-ignored.hosts with the hostname to ignore
• Use # or ; to add comments as to why

License

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.