max local storage size

[Александр Петров]

Hello, i'm new in prometheus .

Is there option to set maximum size of local storage after that it will be cleared and reused.
(some kind of rotation)

I have limited disk space and can give 5-10Gb for prometheus, but don't want to monitor size manually and call rm -f ./data after size expired

Thanks

[Matthias Rampke]

You can use the -storage.local.retention flag to set *how long* data
is kept around. Data points older than that will eventually be removed
(this is fuzzy).

This is not a limit "by size", and how retention time translates to
time depends on the number and shape of your time series. As soon as
you know after how many days you run out of space, set the retention
to a little less and it should hover around an acceptable size.

The additional benefit for you is that you don't need to start empty
every time – you will have a rolling window of data.

/MR

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Matthias Rampke
Engineer

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[Björn Rabenstein]

See also https://github.com/prometheus/prometheus/issues/968 , which
will enable automatic deletion of old samples once the disk gets close
to its capacity.

For now, you have to do what Matthias described: Set a reasonably
retention time, and tune it down or up depending on the disk usage you
see in practice.

--
Björn Rabenstein, Engineer
http://soundcloud.com/brabenstein

SoundCloud Ltd. | Rheinsberger Str. 76/77, 10115 Berlin, Germany