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[Alessandro Tagliapietra <tagliapietra.alessandro@xxxxxxxxx>]

Sorry for the delay, i was out from work.
Awesome work Eugene, I don't need the patch instantly as i'm still building the infrastructure.
Will it will take alot of time to go in Ubuntu repositories?

Why you said you need load balancing? You can use only the master node and in case the rabbitmq-server dies, switch the ip to the new master with pacemaker, that's how I would do.

Best Regards

Alessadro


Il giorno 23/lug/2012, alle ore 21:49, Eugene Kirpichov ha scritto:

> +openstack-dev@
> 
> To openstack-dev: this is a discussion of an upcoming patch about
> native RabbitMQ H/A support in nova. I'll post the patch for
> codereview today.
> 
> On Mon, Jul 23, 2012 at 12:46 PM, Eugene Kirpichov <ekirpichov@xxxxxxxxx> wrote:
>> Yup, that's basically the same thing that Jay suggested :) Obvious in
>> retrospect...
>> 
>> On Mon, Jul 23, 2012 at 12:42 PM, Oleg Gelbukh <ogelbukh@xxxxxxxxxxxx> wrote:
>>> Eugene,
>>> 
>>> I suggest just add option 'rabbit_servers' that will override
>>> 'rabbit_host'/'rabbit_port' pair, if present. This won't break anything, in
>>> my understanding.
>>> 
>>> --
>>> Best regards,
>>> Oleg Gelbukh
>>> Mirantis, Inc.
>>> 
>>> 
>>> On Mon, Jul 23, 2012 at 10:58 PM, Eugene Kirpichov <ekirpichov@xxxxxxxxx>
>>> wrote:
>>>> 
>>>> Hi,
>>>> 
>>>> I'm working on a RabbitMQ H/A patch right now.
>>>> 
>>>> It actually involves more than just using H/A queues (unless you're
>>>> willing to add a TCP load balancer on top of your RMQ cluster).
>>>> You also need to add support for multiple RabbitMQ's directly to nova.
>>>> This is not hard at all, and I have the patch ready and tested in
>>>> production.
>>>> 
>>>> Alessandro, if you need this urgently, I can send you the patch right
>>>> now before the discussion codereview for inclusion in core nova.
>>>> 
>>>> The only problem is, it breaks backward compatibility a bit: my patch
>>>> assumes you have a flag "rabbit_addresses" which should look like
>>>> "rmq-host1:5672,rmq-host2:5672" instead of the prior rabbit_host and
>>>> rabbit_port flags.
>>>> 
>>>> Guys, can you advise on a way to do this without being ugly and
>>>> without breaking compatibility?
>>>> Maybe have "rabbit_host", "rabbit_port" be ListOpt's? But that sounds
>>>> weird, as their names are in singular.
>>>> Maybe have "rabbit_host", "rabbit_port" and also "rabbit_host2",
>>>> "rabbit_port2" (assuming we only have clusters of 2 nodes)?
>>>> Something else?
>>>> 
>>>> On Mon, Jul 23, 2012 at 11:27 AM, Jay Pipes <jaypipes@xxxxxxxxx> wrote:
>>>>> On 07/23/2012 09:02 AM, Alessandro Tagliapietra wrote:
>>>>>> Hi guys,
>>>>>> 
>>>>>> just an idea, i'm deploying Openstack trying to make it HA.
>>>>>> The missing thing is rabbitmq, which can be easily started in
>>>>>> active/active mode, but it needs to declare the queues adding an
>>>>>> x-ha-policy entry.
>>>>>> http://www.rabbitmq.com/ha.html
>>>>>> It would be nice to add a config entry to be able to declare the queues
>>>>>> in that way.
>>>>>> If someone know where to edit the openstack code, else i'll try to do
>>>>>> that in the next weeks maybe.
>>>>> 
>>>>> 
>>>>> https://github.com/openstack/openstack-common/blob/master/openstack/common/rpc/impl_kombu.py
>>>>> 
>>>>> You'll need to add the config options there and the queue is declared
>>>>> here with the options supplied to the ConsumerBase constructor:
>>>>> 
>>>>> 
>>>>> https://github.com/openstack/openstack-common/blob/master/openstack/common/rpc/impl_kombu.py#L114
>>>>> 
>>>>> Best,
>>>>> -jay
>>>>> 
>>>>> _______________________________________________
>>>>> Mailing list: https://launchpad.net/~openstack
>>>>> Post to     : openstack@xxxxxxxxxxxxxxxxxxx
>>>>> Unsubscribe : https://launchpad.net/~openstack
>>>>> More help   : https://help.launchpad.net/ListHelp
>>>> 
>>>> 
>>>> 
>>>> --
>>>> Eugene Kirpichov
>>>> http://www.linkedin.com/in/eugenekirpichov
>>>> 
>>>> _______________________________________________
>>>> Mailing list: https://launchpad.net/~openstack
>>>> Post to     : openstack@xxxxxxxxxxxxxxxxxxx
>>>> Unsubscribe : https://launchpad.net/~openstack
>>>> More help   : https://help.launchpad.net/ListHelp
>>> 
>>> 
>> 
>> 
>> 
>> --
>> Eugene Kirpichov
>> http://www.linkedin.com/in/eugenekirpichov
> 
> 
> 
> -- 
> Eugene Kirpichov
> http://www.linkedin.com/in/eugenekirpichov
> 
> _______________________________________________
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