[ovirt-users] HostedEngine with HA

[Hanson Turner]

Hi Carlos,

If you're using shared storage across the nodes/hypervisors, the 
HostedEngine VM should already be HA.

Sometimes this allows the engine to drop while restarting it on another 
node. Usually when this happens the rest of the nodes running VMs stay 
up, and things resync when the downed node comes back.

IE the only one to lose pings is the Hosted-Engine. Unless ofcourse 
there were VM's on the same node, in which case, if they were HA VMs 
they will be restarted/resumed depending on your settings.


Thanks,

Hanson


On 08/17/2016 05:06 AM, Carlos Rodrigues wrote:
> Anyone can help me to build HA on HostedEngine VM?
>
> How can i guarantee that if host with HostedEngine VM goes down, the
> HostedEngine VM moves to another host?
>
> Regards,
> Carlos Rodrigues
>
> On Tue, 2016-08-16 at 11:53 +0100, Carlos Rodrigues wrote:
>> On Sun, 2016-08-14 at 14:22 +0300, Roy Golan wrote:
>>>
>>>
>>> On 12 August 2016 at 20:23, Carlos Rodrigues <cmar at eurotux.com>
>>> wrote:
>>>> Hello,
>>>>
>>>> I have one cluster with two hosts with power management correctly
>>>> configured and one virtual machine with HostedEngine over shared
>>>> storage with FiberChannel.
>>>>
>>>> When i shutdown the network of host with HostedEngine VM,  it
>>>> should be
>>>> possible the HostedEngine VM migrate automatically to another
>>>> host?
>>>>
>>> migrate on which network?
>>>   
>>>> What is the expected behaviour on this HA scenario?
>>> After a few minutes your vm will be shutdown by the High
>>> Availability
>>> agent, as it can't see network, and started on another host.
>>
>> I'm testing this scenario and after shutdown network, it should be
>> expected that agent shutdown ha and started on another host, but
>> after
>> couple minutes nothing happens and on host with network we getting
>> the
>> following messages:
>>
>> Aug 16 11:44:08 ied-blade11.install.eurotux.local ovirt-ha-
>> agent[2779]:
>> ovirt-ha-agent
>> ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine.config ERROR
>> Unable to get vm.conf from OVF_STORE, falling back to initial vm.conf
>>
>> I think the HA agent its trying to get vm configuration but some how
>> it
>> can't get vm.conf to start VM.
>>
>> Regards,
>> Carlos Rodrigues
>>
>>
>>>>
>>>> Regards,
>>>>
>>>> --
>>>> Carlos Rodrigues
>>>>
>>>> Engenheiro de Software Sénior
>>>>
>>>> Eurotux Informática, S.A. | www.eurotux.com
>>>> (t) +351 253 680 300 (m) +351 911 926 110
>>>>
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