Hi, We went the „long“ way. - first emptied osd node by node (for each pool), purged all OSDs - moved the OS from centos 7 to ubuntu 20 (reinstalled every node) - removed the cache pool and cleaned up some config - installed all OSDs and moved the data back - upgraded ceph nautilus to octopus (containered) and now we are moving to pacific/quincy. This worked (slow - lot’s of data) without any bigger outage or problems. The only thing was, that a pool of NVMe nodes was flooding other nodes while backfilling :) … … so start with low backfill values and CHECK before you carrie on with other pools or nodes. Best . Götz
Am 17.01.2024 um 08:09 schrieb Szabo, Istvan (Agoda) <Istvan.Szabo@agoda.com>:
Hi Goetz,
Which method you finally choose? We've done a successful migration from Centos 8 to ubuntu 20.04 but we have a centos 7 nautilus cluster which we'd like to move to Ubuntu 20.04 octopus same as you. Wonder any of you tried to skip Rocky 8 from the flow?
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