We using Nagios for our servers monitoring.
Each web-environment have 1 cluster as backend - Cassanra 2.0. Each cluster have 3-5 nodes.
Question is: I want write a plugin for Nagios, for Cassandra's nodes monitoring. Unfortunately - I'm not so good familiar with Cassandra, and don't sure - what parameters need exactly to be checked?
I'm planing use Nodetool utility to grab data from nodes - but it have a lot of commands, and each provides lot of information (e.g. -
So - for monitoring I need get some data about memory each node's usage, used disk space, may be - something else?