[ovirt-users] GlusterFS Distributed Replicate HA with KeepAlived

Thu Nov 6 09:19:59 UTC 2014

Hi Humble,

Seems this option " 'backup-vol-file-servers' " work in the beginning of
the setup....is this option can automatically try to mount another server
if first one fail such as three months later after setup ??

https://access.redhat.com/documentation/en-US/Red_Hat_Storage/2.1/html/Administration_Guide/sect-Administration_Guide-GlusterFS_Client-GlusterFS_Client-Mounting_Volumes.html

On Fri, Aug 22, 2014 at 4:55 PM, Humble Devassy Chirammal <
humble.devassy at gmail.com> wrote:

> The 'referred' mount point is the 'gluster server IP' and the VM behaviour
> depends on the Gluster Volume availability as discussed before.
>
> Reg#localhost instead of server IP, I havent tried this, but logically it
> should work. You may test it. Also there is an option called
> 'backup-vol-file-servers' [1] , which should serve(if I am not wrong in
> interpreting the mentioned mail thread )the same purpose.
>
> --Humble
>
>
> On Wed, Aug 20, 2014 at 9:23 AM, Punit Dambiwal <hypunit at gmail.com> wrote:
>
>> Hi Humble,
>>
>> Thanks for the update...the mount point is the ip address to mount the
>> gluster volume,so if this server goes down...all the VM's will pause :-
>>
>> [image: Inline image 1]
>>
>> Some one from community suggest me to use the localhost instead of the ip
>> address for HA....but i have doubt if i use localhost...then whenever any
>> node goes down the VM's of the failed node will not migrate to another
>> node... ??
>>
>> http://lists.ovirt.org/pipermail/users/2014-July/025728.html
>>
>> Thanks,
>> Punit Dambiwal
>>
>>
>>
>>
>> On Tue, Aug 19, 2014 at 8:23 PM, Humble Devassy Chirammal <
>> humble.devassy at gmail.com> wrote:
>>
>>> Hi,
>>>
>>>
>>> >>
>>> ....but i want the way from the ovirt portal...if possible ??
>>> >>
>>>
>>>
>>> Yes, its possible.
>>>
>>> >>
>>> Also in my case if the mount point HV node goes down...all the VM's will
>>> pause...and once the node come up..i need to manually poweroff the VM's and
>>> manually start again...
>>> >>
>>>
>>> I failed to interpret  'mount point' here. If you are talking about
>>> 'gluster' volume server , the VM behaviour depends on the gluster
>>> configuration which indirectly depend on the quorum configuration and
>>> volume configuration. If there is an error from underlying storage ( here
>>> gluster volume) VM can pause , however latest versions of ovirt support
>>> auto resume.
>>>
>>> >>
>>> Someone from community suggest me to use the localhost as mount point if
>>> you are using compute & storage on the same node...but i doubt about the
>>> failover...that means if any node goes down....how the VM migration on
>>> another node will happen ??
>>> >>
>>>
>>> If you are using local data center the VM migration can't happen. You
>>> have to configure a storage domain which can be accessed from your Ovirt
>>> Cluster  Hosts .
>>>
>>> Please have a look at
>>> http://www.ovirt.org/Gluster_Storage_Domain_Reference which talks about
>>> the recommended way of configuring it.
>>>
>>> --Humble
>>>
>>>
>>> On Tue, Aug 19, 2014 at 7:26 AM, Punit Dambiwal <hypunit at gmail.com>
>>> wrote:
>>>
>>>> Hi Humble,
>>>>
>>>> Thanks for the updates....but i want the way from the ovirt portal...if
>>>> possible ??
>>>>
>>>> Also in my case if the mount point HV node goes down...all the VM's
>>>> will pause...and once the node come up..i need to manually poweroff the
>>>> VM's and manually start again...
>>>>
>>>> Someone from community suggest me to use the localhost as mount point
>>>> if you are using compute & storage on the same node...but i doubt about the
>>>> failover...that means if any node goes down....how the VM migration on
>>>> another node will happen ??
>>>>
>>>> Thanks,
>>>> Punit
>>>>
>>>>
>>>> On Mon, Aug 18, 2014 at 9:37 PM, Humble Devassy Chirammal <
>>>> humble.devassy at gmail.com> wrote:
>>>>
>>>>> Hi Punit,
>>>>>
>>>>>
>>>>> If you are using gluster volume for virt store, it is always recommend
>>>>> to enable /considering virt store use case mentioned here :
>>>>> http://gluster.org/documentation/use_cases/Virt-store-usecase/
>>>>>
>>>>> Regarding how to add bricks to the volume , you can refer #
>>>>> https://access.redhat.com/documentation/en-US/Red_Hat_Storage/2.1/html/Administration_Guide/sect-User_Guide-Managing_Volumes-Expanding.html
>>>>>
>>>>> The virt store use case enables quorum which ideally resolves the
>>>>> possibilities of split brain.
>>>>>
>>>>> Please feel free to revert if you come across any issues.
>>>>>
>>>>> --Humble
>>>>>
>>>>>
>>>>> On Fri, Aug 15, 2014 at 12:05 PM, Punit Dambiwal <hypunit at gmail.com>
>>>>> wrote:
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> I have 4 node GlusterFS Distributed Replicate volume...the same 4
>>>>>> host node i am using for compute purpose....now i want to make it HA....so
>>>>>> if any host goes down .....VM will not pause and it will migrate to another
>>>>>> available node...
>>>>>>
>>>>>> 1. Can any one have any document or reference to do this with
>>>>>> keepalived...
>>>>>> 2. I have one more node as spare...so if any host goes down and can
>>>>>> not come up again because of any HW failure...i can add it...but i didn't
>>>>>> find any way to add these bricks to volume...??
>>>>>>
>>>>>> Thanks,
>>>>>> Punit
>>>>>>
>>>>>> _______________________________________________
>>>>>> Users mailing list
>>>>>> Users at ovirt.org
>>>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
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