----- Original Message ----- > From: "Ted Miller" <tmil...@hcjb.org> > To: users@ovirt.org > Sent: Monday, March 24, 2014 8:27:31 PM > Subject: Re: [Users] Force certain VMs to be on different hosts > > Scott > > On 3/19/2014 10:30 AM, Scott Ocken wrote: > > Ted, > > > > Yes! This is exactly what I was looking for. I think you described it > > better than I did. This feature would be really nice. > > > > Thanks > > Scott > > > > Quoting Ted Miller <tmil...@hcjb.org>: > > > >> I think what the OP is asking for a designation as a "redundant group 1". > >> He may have 10 hosts and 3 VMs in "redundant group 1". He doesn't care > >> which hosts they run on, as long as they are three separate hosts. > >> > >> I can see this as being fairly widely applicable. If you have multiple > >> web servers for load sharing, you don't want them all running on the same > >> host, because VM load is going to peak on them at the same times. oVirt > >> has no way of knowing that unless you give oVirt a hint to spread things > >> around. The web group might also want to split up the server that spreads > >> the jobs around, and a database server used by all the web hosts. I can > >> see easily ending up with a group of 5 machines (3 web servers, a load > >> sharing controller, and a database server) that you want spread across any > >> 5 of the 15 servers in a cluster, because their loads are all going to > >> spike together. You don't want oVirt having to try to migrate some of them > >> during a load spike, because oVirt noticed that a host with 3 of the 5 is > >> overloaded. > >> > >> Not my situation, but one I can see the usefulness of. > >> Ted Miller > >> Elkhart, IN, USA > >> > >> On 3/18/2014 11:54 AM, Meital Bourvine wrote: > >>> Hi Scott, > >>> > >>> Click on a vm > >>> Edit > >>> Show Advanced Options > >>> Host > >>> "Start Running on" > >>> > >>> ----- Original Message ----- > >>>> From: "Scott Ocken" <sc...@infobunker.com> > >>>> To: Users@ovirt.org > >>>> Sent: Tuesday, March 18, 2014 5:08:24 PM > >>>> Subject: [Users] Force certain VMs to be on different hosts > >>>> > >>>> Is there a way to have certain VMs to be on different hosts? (assuming > >>>> there are enough hosts) > >>>> > >>>> IE. I have a db cluster of 3 VMs. I would like each one to always be > >>>> on different hosts. That way if a host goes down my db cluster is > >>>> still happy while migration happens. Or if migration fails I am still > >>>> good. > >>>> > >>>> Thanks > >>>> Scott > >> > >> Ted Miller > It looks like the Negative Affinity/Anti-Affinity feature that Itamar Hein > pointed out in his email, with a feature page at > http://www.ovirt.org/Features/VM-Affinity includes what you are trying to > do.
+1 :-) > This is in 3.4, which in the QA process now. As far as I know this feature is fully tested and verified for version 3.4. I'd love for feedback! and would like to assist in anything :) > > Ted Miller > Elkhart, IN, USA > > _______________________________________________ > Users mailing list > Users@ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users