Depending on other constraints you have, you could run prometheus in agent mode, with its WAL on ramdisk, doing remote_write to some other system.
I also remember reading recently about a change in VictoriaMetrics to defer the flushing of memory to reduce SSD wear: https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.85.0 https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3337#issuecomment-1338482663 On Sunday, 12 March 2023 at 23:18:48 UTC Julien Pivotto wrote: > Hello, > > It's not possible directly. > > One possible workaround that comes to mind is using snapshots. > > You could take periodic snapshots of the Prometheus database and flush > them to the filesystem at a lower frequency, say every 5 minutes, as you > mentioned. > > Then you can sync the snapshot to disk. > > Note: You can decide to snapshot the head or just the blocks. > > On 12 Mar 15:18, Marian Velez wrote: > > Hi! > > I need a hand trying to delay I/O flush operations into the > hw/filesystem, > > due to poor hardware SSD lifetime. > > I'm at this time unable to replace the SSD since I'm at a very remote > > location, so in term I was thinking on extending it as match as possible > by > > flushing prometheus synchronous I/O operations into the filesystem like > > every 5 minutes or so. > > > > Initially I was thinking on doing some kind of hybrid thing in which I > run > > tmpfs and sync it into the proper FS, but the DB keep breaking due to > open > > files, which is kind of expected. > > > > On the other hand, I couldn't find any custom Linux filesystem, fuse or > > not, that would allow me to control the underlying FS flushing > frequency, > > so I was trying to see if I had the ability to do that on the prometheus > DB > > side. > > > > Do you have any clue if this is achievable? > > > > Thanks in advance! > > > > -- > > You received this message because you are subscribed to the Google > Groups "Prometheus Users" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to [email protected]. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/prometheus-users/4ca96afd-e76d-407c-9006-4e7320bcae74n%40googlegroups.com > . > > > -- > Julien Pivotto > @roidelapluie > -- You received this message because you are subscribed to the Google Groups "Prometheus Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/050e54c1-0aee-44ea-b805-57dc60b48a55n%40googlegroups.com.
