Re: [EXT] upgrading OS on gluster servers

[Stefan Solbrig <stefan.solbrig@xxxxx>]

Hi Strahli,

Thank you for the quick answer!  Sorry I have to ask again: as far as I can see, Gluster keeps all information about peers, bricks, in /var/lib/glusterd.  So if I migrate to a new OS, it seems that I have to restore them. Or would you suggest rather to re-generate them by repeating all "peer probe ..."  and "volume brick-add ..." commands?

best wishes,

Stefan

-- 

Dr. Stefan Solbrig
Universität Regensburg, Fakultät für Physik,
93040 Regensburg, Germany
Tel +49-941-943-2097

Am 11.05.2021 um 13:46 schrieb Strahil Nikolov <hunter86_bg@xxxxxxxxx>:

Hi Stefan,

I would backup Gluster's dir in /etc .

You don't need to restore any configuration files after the update, but it's good to have them backed up.

Best Regards,

Strahil Nikolov

On Tue, May 11, 2021 at 10:11, Stefan Solbrig

<stefan.solbrig@xxxxx> wrote:

Dear all,

I was wondering what is the prefered way to upgrade the server OS (not glusterd) for a GlusterFS.

I'm running a distributed-only system (no replication) on centos 7, planning an upgrade to centos 8 stream.

I suppose a possible way is like this:

* unmount file system on all clients

* stop cluster

* copy data in /var/lib/glusterd

* upgrade all servers

* restore data in /var/lib/glusterd

Could you please advise me if:

- the files in /var/lib/glusterd  are all that is needed?

- or can I regenerate these from other data?

best wishes,

Stefan

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