sensu/sensu-community-plugins — pull request #113 by chrisalexander (2012-12-05 16:32:11+00:00)
Title: Percona cluster size plugin

Percona Cluster is a MySQL fork which provides many additional features, one of which is the ability to run MySQL in a multi-master configuration.

This plugin solves one of our problems with monitoring Percona in that we want to make sure we still have 3 servers in the cluster at all times. It monitors the size of the cluster, as reported by the global status key, and errors if it is not equal to the desired number as set up in monitoring.