[Gluster-users] Client vs Server Quorum

[Lindsay Mathieson]

Many thanks for the detailed reply Ravishankar

On 11 October 2015 at 16:27, Ravishankar N <ravishankar at redhat.com> wrote:

> Question:
> - Which is better, server or client quorums?
>
> You can still end up in  split-brain of the files stored in the volume  if
> sever quorum is enabled. Sever quorum is more useful to avoid conflicts in
> volume configuration since it also disallows volume set commands, peer
> probe etc when not in quorum. Client quorum is better if you want to avoid
> split-brains of files present in the volume.
>
> - Can you safely enable both? recommended?
>
> IMHO, client-quorum is enough. In case of dist-rep volumes, it acts on
> only those replica sets where quorum is not met making only that replica
> pair EROFS. Server quorum outright kills the bricks, not even allowing read
> access. But yes, you can enable both.
>


I'll think about that, but sounds like just client quorum is sufficient,
though with VM hosting you probably don't even want read access.

One thing, just to clarify - client quorum is controlled by the following
settings?

- cluster.quorum-type
- cluster.quorum-count


Thanks and Cheers,




-- 
Lindsay
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