Re: [EXT] upgrading OS on gluster servers

Felix Kölzow <felix.koelzow@xxxxxx> · Wed, 12 May 2021 12:09:05 +0200

    Dear Stefan,

    what about your expectation on upgrading the OS to CentOS 8
      Stream? 

    Are there any advantages?

    Regards,
    Felix

    On 12/05/2021 12:02, Stefan Solbrig
      wrote:

      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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