How and where to set Storage retention configuration?

[Digambar Dinde]

I want to store scraped data for a month on prometheus server. Now data is getting deleted in 15 days.

[vteja...@gmail.com]

Hi,

If you run Prometheus help, you can see some attribute like:

./prometheus -h

--storage.tsdb.retention=15d   How long to retain samples in the storage.

If you want it for 1 month, set this to

--storage.tsdb.retention=30d

Time durations are specified as a number, followed immediately by one of the following units:

• s - seconds
• m - minutes
• h - hours
• d - days
• w - weeks
• y - years

Please correct if I am wrong.

BR,

Teja

[Digambar Dinde]

Thanks, should we set this flag while starting prometheus server? and where to set it?

[vteja...@gmail.com]

Yes, should be set before you start it

[g...@recongate.com]

Is there a place where i can configure the retention so that it will work even after reboot (perhaps a config file)?

[Ben Kochie]

Yes, you include it in however you start your server, init script, systemd unit, etc.

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[bp3...@gmail.com]

Is there a way to turn off the retention completely? (i.e. retain everything). Or should I just set my limit to a very high number? (e.g. 5 years)

[Ben Kochie]

Setting to a high number like 10 years is the typical solution.

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