Re: [Openstack] Compute Node Down!

2012-09-20 Thread Wolfgang Hennerbichler
Thanks, that's what I ended up doing (by intuition rather than knowledge) yesterday. I didn't know about nova rescue either. I think this is a Big Big room for improvement here. In the best case this should be discovered automatically and the switchover should be done without human

Re: [Openstack] Compute Node Down!

2012-09-19 Thread Alejandro Comisario
if you are on essex, you can issue a nova rescue, if in cactus, you have to manipulate the instances table to tell where the new instance will be running, and then from the new compute node issue a : virsh define /path/to/XML virsh start instance_name From that moment, you can manage the

Re: [Openstack] Compute Node Down!

2012-09-19 Thread Sam Stoelinga
Hi Ale, It's the first time I see nova rescue, maybe this should be somewhere else in the documentation. Maybe the part related to migration, that's where I looked and tried. I first tried to do migration of the VM on a dead host, but that didn't work then after searching I stumbled upon this

Re: [Openstack] Compute Node Down!

2012-09-19 Thread Vishvananda Ishaya
rescue does not bring back nodes from dead hosts. It reboots the instance with a fresh copy of the image it booted with as the base drive and attaches the current drive as a second drive so you can mount it and fix things. Unrescue switches back to the original drive after you have made your

Re: [Openstack] Compute Node Down!

2012-09-19 Thread Tom Fifield
On 20/09/12 13:50, Vishvananda Ishaya wrote: ** On Wed, Sep 19, 2012 at 4:03 AM, Wolfgang Hennerbichler wolfgang.hennerbich...@risc-software.at mailto:wolfgang.hennerbich...@risc-software.at wrote: Hello Folks, Although it seems a pretty straightforward scenario I have a hard time