[ovirt-users] oVirt HA behavior

[Alex K]

Hi All,

Just completed the tests and it works great.
VM leases is just what I needed.

Thanx,
Alex

On Tue, Sep 19, 2017 at 10:16 AM, Yaniv Kaul <ykaul at redhat.com> wrote:

>
>
> On Tue, Sep 19, 2017 at 1:00 AM, Alex K <rightkicktech at gmail.com> wrote:
>
>> Enabling VM leases could be an answer to this. Will test tomorrow.
>>
>>
> Indeed. Let us know how it worked for you.
>
>
>> Thanx,
>> Alex
>>
>> On Sep 18, 2017 7:50 PM, "Alex K" <rightkicktech at gmail.com> wrote:
>>
>> Hi All,
>>
>> I have the following issue with the HA behavior of oVirt 4.1 and need to
>> check with you if there is any work around from your experience.
>>
>> I have 3 servers (A, B, C) with hosted engine in self hosted setup on top
>> gluster with replica 3 + 1 arbiter. All good except one point:
>>
>> The hosts have been configured with power management using IPMI (server
>> iLO).
>> If I disconnect power from one host (say C) (or disconnect all network
>> cables of the host) the two other hosts go to a loop where they try to
>> verify the status of the host C by issuing power management commands to the
>> host C. Since power of host is off the server iLO does not respond on the
>> network and the power management of host C fails, leaving the VMs that were
>> running on the host C in an unknown state and they are never restarted to
>> the other hosts.
>>
>> Is there any fencing option to change this behavior so as if both
>> available hosts fail to do power management of the unresponsive host to
>> decide that the host is down and to restart the VMs of that host to the
>> other available hosts.
>>
>>
> No, this is a bad assumption. Perhaps they are the ones isolated form it?
> Y.
>
>
>>
>> I could also add additional power management through UPS to avoid this
>> issue but this is not currently an option and I am interested to see if
>> this behavior can be tweaked.
>>
>> Thanx,
>> Alex
>>
>>
>>
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>>
>>
>
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