On Sat, Jun 2, 2018 at 1:57 AM, femi adegoke <ovirt@fateknollogee.com> wrote:
> we recommend up to 7 HE hosts, it is not important if the number is
> odd or even. The real implementation limit is much higher and you
> won't reach it. But since we do not test more than 7 as part of the QE
> process, we can't recommend it.

If I increase the number of hosts from 3 to 3+n, what is the proper way to add gluster volumes (data/engine/vmstore) to the new hosts?

You can create new replica 3 or replica 2 + arbiter volumes - so you would need 3 new bricks. The bricks need to be of same configuratation and size, except for the arbiter bricks.

To add hosts to existing cluster, you can add hosts via oVirt engine and use the web UI to create bricks and add new volumes.
With 4.2, we also provide a way to scale hosts via the Cockpit UI ( from the Manage Gluster plugin on the HE dashboard)


I would like the new hosts to also be hyperconverged (aka compute + storage)
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