https://bugzilla.wikimedia.org/show_bug.cgi?id=36994
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Bug #: 36994
Summary: disk I/O in ganglia
Product: Wikimedia Labs
Version: unspecified
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: Unprioritized
Component: General
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
Mobile Platform: ---
Ganglia on wmflabs is missing disk I/O reporting. The reason we want them, is
to be able to tell which instance is doing heavy I/O activities which might be
kill GlusterFS (see bug 36993).
There is a Gmetric plugin which we might want to use. Based on /proc/diskstats
https://github.com/ganglia/gmetric/blob/master/disk/diskio.pl/ganglia_disk_stats.pl
We used to have a homegrown `ganglia-metrics` debian package in
/trunk/ganglia_metrics, it is probably obsolete nowadays. Anyway, there was a
python script there:
http://svn.wikimedia.org/viewvc/mediawiki/trunk/ganglia_metrics/DiskStats.py?view=markup&pathrev=69278
OR, maybe Ganglia already provides the metrics and it is all about enabling
them?
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