[Gluster-users] [EXT] upgrading OS on gluster servers

[Stefan Solbrig]

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 at yahoo.com>:
> 
> 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 at ur.de> 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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