Hi Alessandro, My patch is about removing the need for pacemaker (and it's pacemaker that I denoted with the term "TCP load balancer").
I didn't submit the patch yesterday because I underestimated the effort to write unit tests for it and found a few issues on the way. I hope I'll finish today. On Tue, Jul 24, 2012 at 12:00 AM, Alessandro Tagliapietra <tagliapietra.alessan...@gmail.com> wrote: > 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 <ekirpic...@gmail.com> >> 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 <ogelb...@mirantis.com> >>> 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 <ekirpic...@gmail.com> >>>> 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 <jaypi...@gmail.com> 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@lists.launchpad.net >>>>>> 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@lists.launchpad.net >>>>> 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 >> >> _______________________________________________ >> Mailing list: https://launchpad.net/~openstack >> Post to : openstack@lists.launchpad.net >> 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@lists.launchpad.net Unsubscribe : https://launchpad.net/~openstack More help : https://help.launchpad.net/ListHelp
