<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Dec 19, 2017 at 1:10 AM, Ziemowit Pierzycki <span dir="ltr"><<a href="mailto:ziemowit@pierzycki.com" target="_blank">ziemowit@pierzycki.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi,<br>
<br>
I have a cluster of 10 servers all running Fedora 24 along with<br>
Gluster 3.8. I'm planning on doing rolling upgrades to Fedora 27 with<br>
Gluster 3.12. I saw the documentation and did some testing but I<br>
would like to run my plan through some (more?) educated minds.<br>
<br>
The current setup is:<br>
<br>
Volume Name: vol0<br>
Distributed-Replicate<br>
Number of Bricks: 2 x (2 + 1) = 6<br>
Bricks:<br>
Brick1: glt01:/vol/vol0<br>
Brick2: glt02:/vol/vol0<br>
Brick3: glt05:/vol/vol0 (arbiter)<br>
Brick4: glt03:/vol/vol0<br>
Brick5: glt04:/vol/vol0<br>
Brick6: glt06:/vol/vol0 (arbiter)<br>
<br>
Volume Name: vol1<br>
Distributed-Replicate<br>
Number of Bricks: 2 x (2 + 1) = 6<br>
Bricks:<br>
Brick1: glt07:/vol/vol1<br>
Brick2: glt08:/vol/vol1<br>
Brick3: glt05:/vol/vol1 (arbiter)<br>
Brick4: glt09:/vol/vol1<br>
Brick5: glt10:/vol/vol1<br>
Brick6: glt06:/vol/vol1 (arbiter)<br>
<br>
After performing the upgrade because of differences in checksums, the<br>
upgraded nodes will become:<br>
<br>
State: Peer Rejected (Connected)<br></blockquote><div><br></div><div>Have you upgraded all the nodes? If yes, have you bumped up the cluster.op-version after upgrading all the nodes? Please follow : <a href="http://docs.gluster.org/en/latest/Upgrade-Guide/op_version/">http://docs.gluster.org/en/latest/Upgrade-Guide/op_version/</a> for more details on how to bump up the cluster.op-version. In case you have done all of these and you're seeing a checksum issue then I'm afraid you have hit a bug. I'd need further details like the checksum mismatch error from glusterd.log file along with the the exact volume's info file from /var/lib/glusterd/vols/<volname>/info between both the peers to debug this further.<br></div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<br>
If I start doing the upgrades one at a time, with nodes glt10 to glt01<br>
except for the arbiters glt05 and glt06, and then upgrading the<br>
arbiters last, everything should remain online at all times through<br>
the process. Correct?<br>
<br>
Thanks.<br>
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</blockquote></div><br></div></div>