[openstack-dev] [vmware][nova] Prevent HA configuration with different hostnames

Matthew Booth mbooth at redhat.com
Wed Feb 11 15:55:28 UTC 2015


On 11/02/15 15:49, Gary Kotton wrote:
> Hi,
> I do not think that that is a healthy solution. That effectively would
> render a cluster down if the compute node goes down. That would be a real
> disaster. The ugly work around is setting the host names to be the same
> value.

I don't think that's an ugly work around. I think that's the only
currently viable solution.

> This is something that we should discuss at the next summit and I would
> hope to propose a topic to talk about.

Sounds like a good plan. However, given that the bug is marked Critical
I was assuming we wanted a more expedient fix, which is what I've proposed.

Matt

> Thanks
> Gary
> 
> On 2/11/15, 5:31 PM, "Matthew Booth" <mbooth at redhat.com> wrote:
> 
>> I just posted this:
>>
>> https://review.openstack.org/#/c/154907/
>>
>> as an alternative fix for critical bug:
>>
>> https://bugs.launchpad.net/nova/+bug/1419785
>>
>> I've just knocked this up quickly for illustration: it obviously needs
>> plenty of cleanup. I have confirmed that it works, though.
>>
>> Before I take it any further, though, I'd like to get some feedback on
>> the approach. I prefer this to the alternative, because the underlying
>> problem is deeper than supporting evacuate. I'd prefer to be honest with
>> the user and just say it ain't gonna work. The alternative would leave
>> Nova running in a broken state, leaving inconsistent state in its wake
>> as it runs.
>>
>> Matt
>>
>> -- 
>> Matthew Booth
>> Red Hat Engineering, Virtualisation Team
>>
>> Phone: +442070094448 (UK)
>> GPG ID:  D33C3490
>> GPG FPR: 3733 612D 2D05 5458 8A8A 1600 3441 EA19 D33C 3490
>>
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> 
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-- 
Matthew Booth
Red Hat Engineering, Virtualisation Team

Phone: +442070094448 (UK)
GPG ID:  D33C3490
GPG FPR: 3733 612D 2D05 5458 8A8A 1600 3441 EA19 D33C 3490



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