[Gluster-users] Why is it not possible to mount a replicated gluster volume with one Gluster server?

[Atin Mukherjee]

On 09/01/2015 01:00 AM, Merlin Morgenstern wrote:
> this all makes sense and sounds a bit like a solr setup :-)
> 
> I have now added the third node as a peer
> sudo gluster peer probe gs3
> 
> That indeed allow me to mount the share manually on node2 even if node1 is
> down.
> 
> BUT: It does not mount on reboot! It only successfully mounts if node1 is
> up. I need to do a manual: sudo mount -a
You would need to ensure that at least two of the nodes are up in the
cluster in this case.
> 
> Is there a particular reason for this, or is it a misconfiguration?
> 
> 
> 
> 2015-08-31 21:01 GMT+02:00 Joe Julian <joe at julianfamily.org>:
> 
>>
>>
>> On 08/31/2015 10:41 AM, Vijay Bellur wrote:
>>
>>> On Monday 31 August 2015 10:42 PM, Atin Mukherjee wrote:
>>>
>>>>  > 2. Server2 dies. Server1 has to reboot.
>>>>  >
>>>>  > In this case the service stays down. It is inpossible to remount the
>>>> share without Server1. This is not acceptable for a High Availability
>>>> System and I believe also not intended, but a misconfiguration or bug.
>>>> This is exactly what I gave as an example in the thread (please read
>>>> again). GlusterD is not supposed to start brick process if its other
>>>> counter part hasn't come up yet in a 2 node setup. The reason it has
>>>> been designed in this way is to block GlusterD on operating on a volume
>>>> which could be stale as the node was down and cluster was operational
>>>> earlier.
>>>>
>>>
>>> For two node deployments, a third dummy node is recommended to ensure
>>> that quorum is maintained when one of the nodes is down.
>>>
>>> Regards,
>>> Vijay
>>>
>>
>> Have the settings changed to enable server quorum by default?
>>
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> 
> 
> 
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