Ganglia IOStat Disk Metrics

When using Ganglia to monitor your cluster you might miss the possibility to measure disk metrics.
Luckily Ganglia allows to measure user defined metrics with the command line tool gmetric.

Combined with the disk monitor tool iostat, gmetric allows to measure disk metrics.

So i wrote I small PHP script which puts the iostat data to gmetric and is called periodically by a cronjob.

Using Ganglia Web 2 the outcome is pretty candy

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