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Ganglia Overview

Avatar for Peter Juritz Peter Juritz
June 03, 2013
Programming
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Ganglia Overview

A brief overview of the components which make up the ganglia monitoring system.

Avatar for Peter Juritz

Peter Juritz

June 03, 2013
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Transcript

  1. Ganglia Overview Peter Juritz [email protected]

  2. Overview Aimed at HPC environments Three main components : gmond

    gmetad gweb Developed on Github

  3. gmond Metric collection agent Written in C Accept and Send

    channels UDP and TCP transports Send and collect intervals configurable (per metric) Extensible Module format (python + C)

  4. gmetad Written in C (python impl is being worked on)

    Two different modes (normal , “scalable”) Receives data , saves in RRDs Produces XML to requesting clients Oragnised in a tree: Grid => Cluster => Node

  5. A note on RRDs Round robin database – old values

    lost Multiple RRAs per rrd Format: RRA:AVERAGE:0.5:24:61 Important to think about size and scale - Do you REALLY need 1 value per second?

  6. Ganglia-Web Written in PHP \o/ Can drill down from: overview->cluster->node-metric

    Web frontend (also mobile version ) Good inspection functionality

  7. STOP! DEMO TIME!