Re: Upgrading nautilus / centos7 to octopus / ubuntu 20.04. - Suggestions and hints?

[Götz Reinicke <goetz.reinicke@xxxxxxxxxxxxxxx>]

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@xxxxxxxxx>:

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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