[ovirt-users] hyperconverged question

[Kasturi Narra]

yes, right.  What you can do is edit the hosted-engine.conf file and there
is a parameter as shown below [1] and replace h2 and h3 with your second
and third storage servers. Then you will need to restart ovirt-ha-agent and
ovirt-ha-broker services in all the nodes .

[1] 'mnt_options=backup-volfile-servers=<h2>:<h3>'

On Thu, Aug 31, 2017 at 5:54 PM, Charles Kozler <ckozleriii at gmail.com>
wrote:

> 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?
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users
>>>
>>>
>>
>
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