Re: Is it safe to add different OS but same ceph version to the existing cluster?

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On Mon, Aug 7, 2023 at 8:23 AM Szabo, Istvan (Agoda)
<Istvan.Szabo@xxxxxxxxx> wrote:
> Hi,
> I have an octopus cluster on the latest octopus version with mgr/mon/rgw/osds on centos 8.
> Is it safe to add an ubuntu osd host with the same octopus version?
> Thank you

Well, the ceph source bits surely remain the same. The binary bits
could be different due to better compiler support on the newer OS
So assuming the new ceph is deployed on the same hardware platform
things should be stable.
Also, assuming that relevant OS tunables and ceph features and config
options have been configured to match the older deployment, the new
ceph deployment should just work fine and as expected.
Saying all this, I'd still recommend to test out the move one node at
a time rather than executing a bulk move.
Making a list of types of devices and checking driver support on the
new OS would also be a prudent thing to do.
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