[ovirt-users] hyperconverged question

[Charles Kozler]

Hi Kasturi -

Thanks for feedback

> If cockpit+gdeploy plugin would be have been used then that would have
automatically detected glusterfs replica 3 volume created during Hosted
Engine deployment and this question would not have been asked

Actually, doing hosted-engine --deploy it too also auto detects glusterfs.
I know glusterfs fuse client has the ability to failover between all nodes
in cluster, but I am still curious given the fact that I see in ovirt
config node1:/engine (being node1 I set it to in hosted-engine --deploy).
So my concern was to ensure and find out exactly how engine works when one
node goes away and the fuse client moves over to the other node in the
gluster cluster

But you did somewhat answer my question, the answer seems to be no (as
default) and I will have to use hosted-engine.conf and change the parameter
as you list

So I need to do something manual to create HA for engine on gluster? Yes?

Thanks so much!

On Thu, Aug 31, 2017 at 3:03 AM, Kasturi Narra <knarra at redhat.com> wrote:

> Hi,
>
>    During Hosted Engine setup question about glusterfs volume is being
> asked because you have setup the volumes yourself. If cockpit+gdeploy
> plugin would be have been used then that would have automatically detected
> glusterfs replica 3 volume created during Hosted Engine deployment and this
> question would not have been asked.
>
>    During new storage domain creation when glusterfs is selected there is
> a feature called 'use managed gluster volumes' and upon checking this all
> glusterfs volumes managed will be listed and you could choose the volume of
> your choice from the dropdown list.
>
>     There is a conf file called /etc/hosted-engine/hosted-engine.conf
> where there is a parameter called backup-volfile-servers="h1:h2" and if one
> of the gluster node goes down engine uses this parameter to provide ha /
> failover.
>
>  Hope this helps !!
>
> Thanks
> kasturi
>
>
>
> On Wed, Aug 30, 2017 at 8:09 PM, Charles Kozler <ckozleriii at gmail.com>
> wrote:
>
>> Hello -
>>
>> I have successfully created a hyperconverged hosted engine setup
>> consisting of 3 nodes - 2 for VM's and the third purely for storage. I
>> manually configured it all, did not use ovirt node or anything. Built the
>> gluster volumes myself
>>
>> However, I noticed that when setting up the hosted engine and even when
>> adding a new storage domain with glusterfs type, it still asks for
>> hostname:/volumename
>>
>> This leads me to believe that if that one node goes down (ex:
>> node1:/data), then ovirt engine wont be able to communicate with that
>> volume because its trying to reach it on node 1 and thus, go down
>>
>> I know glusterfs fuse client can connect to all nodes to provide
>> failover/ha but how does the engine handle this?
>>
>> _______________________________________________
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>> Users at ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>>
>
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