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. – cfstats
, info
, status
etc).
So – for monitoring I need get some data about memory each node's usage, used disk space, may be – something else?
Best Answer
Basically you need to start observe system.log and will get more and more error for monitoring.