[Openstack-operators] HA configuration in OpenStack

Anne Gentle anne at openstack.org
Mon Jun 3 19:37:35 UTC 2013


More below, sorry my mail client used the wrong "from" address for my
original response.


On Mon, Jun 3, 2013 at 1:59 PM, Anne Gentle
<annegentle at justwriteclick.com>wrote:

>
>
>
> On Sun, Jun 2, 2013 at 8:13 AM, Alexandra Kisin <KISIN at il.ibm.com> wrote:
>
>>
>> Hello,
>>
>> We want to implement a  production HA OpenStack environment based on
>> Grizzly release .
>> We went over the "Introduction to OpenStack High Availability" guide
>> (http://docs.openstack.org/trunk/openstack-ha/content/ch-intro.html) and
>> we
>> have few questions:
>> 1. Does Pacemaker is the preferred tool to base OpenStack HA solution on ?
>>
>
> It's documented but there's no preference. I want to address your
> assumption that the OpenStack docs site endorses particular solutions
> preferentially - that is not the case. We collect documents that should
> help others answer their questions as they approach a complex system.
>
>
>> 2. Are there any alternatives for Pacemaker ?
>>
>
> Surely there are.
>
>
>> 3. Will Pacemaker be used as official HA solution in Havana as well ?
>>
>
> As I indicated above, a document hosted on the docs.openstack.org site
> does not connote an "official" endorsement. Nor does it indicate a roadmap
> for future releases.
>
>
>> 4. Is the guide mentioned above can be used in continue to the basic
>> Grizzly installation guide or any additional steps should be performed
>> before ?
>>
>
> We had a thread on the openstack-docs mailing list about this particular
> doc updates for Grizzly:
> http://lists.openstack.org/pipermail/openstack-docs/2013-April/001547.htmlIn it you'll find that the current active / passive mode is not completely
> documented. The document is mean to help with considerations. As you can
> see from the discussion there's no "one right way." Florian Haas, the
> original author, addresses that in this response:
> http://lists.openstack.org/pipermail/openstack-docs/2013-April/001570.html
> .
>
>
>
>> 5. Does the guide assume 2 controller nodes, meaning Pacemaker cluster
>> will
>> be installed on  2 controller nodes to support HA ?
>>
>
> I believe the document prepares MySQL and RabbitMQ for Pacemaker HA. That
> doesn't assume 2 controller nodes does it? Perhaps Florian or Emilien can
> comment.
>
>
>> 6. Is there a possibility to configure HA for the Network Node ? If yes ,
>> can you point us to any relevant references.
>>
>
> I don't know of any.
>
> Hope this helps,
> Anne
>
>
>>
>> Thank you.
>>
>> Alexandra Kisin
>> Servers & Network group, IBM R&D Labs in Israel
>> Unix & Virtualization Team
>>
>>
>> _______________________________________________
>> OpenStack-operators mailing list
>> OpenStack-operators at lists.openstack.org
>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>>
>
>
>
> --
> Anne Gentle
> annegentle at justwriteclick.com
>
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