openstack team mailing list archive

[Sébastien Han <han.sebastien@xxxxxxxxx>]

Hi,

Managing a resource via LSB only checks the PID. If the PID exists the
service is running but it's not enough because it doesn't mean that the
service is truly functionnal. However OCF agents offer more features like
fine monitoring (scripting).
I'm not sure to understand your question about Rabbit-MQ but if the
question was: "How do you monitor the connection of each service to
Rabbit-MQ?", here is the answer:

The RA monitors the connection state (ESTABLISHED) between the service
(nova-scheduler, nova-cert, nova-consoleauth) and rabbit-MQ according to
the PID of the process.

By the way, did you start with the floating IP OCF agent?

Cheers.


On Tue, Jul 3, 2012 at 12:45 PM, Christian Parpart <trapni@xxxxxxxxx> wrote:

> Hey,
>
> that's great, but how do you handle RabbitMQ in-between?
>
> I kind of achieved it w/o OCF agents but used native upstart support of
> Pacemaker, however,
> OCF's are much more nicer, and still, I'd be interested in how you solved
> the RabbitMQ issue.
>
> Best regards,
> Christian Parpart.
>
> On Mon, Jul 2, 2012 at 7:38 PM, Sébastien Han <han.sebastien@xxxxxxxxx>wrote:
>
>> Hi everyone,
>>
>> For those of you who want to achieve HA in nova. I wrote some resource
>> agents according to the OCF specification. The RAs available are:
>>
>>    - nova-scheduler
>>    - nova-api
>>    - novnc
>>    - nova-consoleauth
>>    - nova-cert
>>
>> The how-to is available here:
>> http://www.sebastien-han.fr/blog/2012/07/02/openstack-nova-components-ha/ and
>> the RAs on my Github https://github.com/leseb/OpenStack-ra
>>
>> Those RAs mainly re-use the structure of the resource agent written by
>> Martin Gerhard Loschwitz from Hastexo.
>>
>> Hope it helps!
>>
>> Cheers.
>>
>> ~Seb
>>
>>
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>>
>