[Gluster-users] Gluster update

Dj Merrill
Thu, 26 May 2016 20:52:29 -0000

On 05/26/2016 04:43 PM, Gandalf Corvotempesta wrote:
> If bring down everything is really needed to upgrade, gluster can not be
> considered highly available
>
> Bring down single host or server is ok, what is not ok and is nonsense
> is bring down the whole infrastructure as stated on official docs.
>

High availability has a lot to do with how you design your
infrastructure.  If you only have one server, for example, that isn't
going to provide high availability no matter what the software can do.

If you need 100% uptime for particular critical services then design
around that requirement.  Multiple servers, with enough redundancy and
capability to migrate critical services (VMs whatever) so that they
always stay up.

Upgrade part of the Gluster infrastructure, then migrate your critical
items to the upgraded servers, then upgrade the rest, etc.

This is more of a design and administrative issue than a software issue,
IMHO.

-Dj