Re: [Openstack] [Openstack-operators] Nova Controller HA issues

2012-06-28 Thread Igor Laskovy
Hi guys, have any updates here? On Sun, Jun 17, 2012 at 12:59 PM, Igor Laskovy igor.lask...@gmail.com wrote: John, Jason, can you please concretely clarify what this bad things? For example the worst-case. Yoshi, Kei, can you please clarify current status of Kemari. How far it is from

Re: [Openstack] [Openstack-operators] Nova Controller HA issues

2012-06-17 Thread Igor Laskovy
*John, Jason*, can you please concretely clarify what this bad things? For example the worst-case. *Yoshi, Kei*, can you please clarify current status of Kemari. How far it is from production usage? On Fri, Jun 15, 2012 at 5:48 PM, Jason Hedden jhed...@mcs.anl.gov wrote: I'm running 2 full nova

Re: [Openstack] [Openstack-operators] Nova Controller HA issues

2012-06-15 Thread Igor Laskovy
Why? Can you please clarify. Igor Laskovy facebook.com/igor.laskovy Kiev, Ukraine On Jun 15, 2012 1:55 AM, Christian Parpart tra...@gmail.com wrote: I don't think putting the controller node completely into a VM is a good advice, at least when speaking of nova-scheduler and nova-api (if

Re: [Openstack] [Openstack-operators] Nova Controller HA issues

2012-06-15 Thread Christian Parpart
Hey, well, I said I might be wrong because I have no clear vision on how OpenStack works in its deepest detail, however, I would not like to depend on a controller node that is inside a virtual machine, controlled by compute nodes, that are controlled by the controller node. This sounds quite

Re: [Openstack] [Openstack-operators] Nova Controller HA issues

2012-06-15 Thread Igor Laskovy
I am using OpenStack for my little lab for a short time too)) Ok, you are right of course, but I meant a some another design when told about virtualization controller nodes. It is can be only two dedicated hypetvisor with dedicated share/drbd between them. This hypervisors will be standalone,

Re: [Openstack] [Openstack-operators] Nova Controller HA issues

2012-06-15 Thread John Garbutt
I know there is some work in the XenAPI driver to make it resilient to these kinds of failures (to allow frequent updates of the nova code), and I think there were plans for the work to be reused in the Libvirt driver. AFAIK, in Essex and lower, bad things can happen if you don't wait for all

Re: [Openstack] [Openstack-operators] Nova Controller HA issues

2012-06-15 Thread Igor Laskovy
So, making cloud controller node highly available using Corosync/Pacemaker does not really avoid potential issue which you have mentioned below (recover from half completed tasks), correct? Igor Laskovy facebook.com/igor.laskovy Kiev, Ukraine On Jun 15, 2012 1:36 PM, John Garbutt

Re: [Openstack] [Openstack-operators] Nova Controller HA issues

2012-06-14 Thread Igor Laskovy
Hi, have any updates there? Can anybody clarify what happens if controller nodes just going hard shutdown? I thinking about solution with two hypervisors and putting controller node in VM shared storage, which can be relaunched when active hypervisor will die. Any ideas, advise? On Tue, Jun 12,

Re: [Openstack] [Openstack-operators] Nova Controller HA issues

2012-06-14 Thread Christian Parpart
I don't think putting the controller node completely into a VM is a good advice, at least when speaking of nova-scheduler and nova-api (if central). I may be wrong, and if so, please correct me. Christian. On Thu, Jun 14, 2012 at 7:20 PM, Igor Laskovy igor.lask...@gmail.comwrote: Hi, have any