Hi, do you have shared storage for your instances? If your instances disks are in a shared storage like iscsi or CEPH you can do live migrations without problems, otherwise, if your instances disks are in the compute nodes local storage ( /var/lib/nova/instances), you may need to put this directory in a NFS share to be able to do live migrations.
BR, Xabier El 11/06/15 a las 11:56, Yngvi Páll Þorfinnsson escribió: > > Hi > > > > I have installed and configured OpenStack(Juno) environment on > Ubuntu(14.04). > > We have currently 1 controller node, 3 network nodes and 4 compute > nodes as well as 4 swift nodes. > > I'm using OpenStack Networking (neutron). > > > > I was thinking of doing a „live migration“ of several instances, if I > need to do a OS upgrade on a compute node. > > For the task of configuring „live magration“ I‘ve been reading this > document: > > > > *OpenStack Cloud Administrator Guide* > > current (2015-05-21) > > Copyright © 2013-2015 OpenStack Foundation Some rights reserved. > > > > I can quickly see it‘s necessary to add this line to the nova.conf > file ( on computer nodes): > > > > live_migration_flag=VIR_MIGRATE_UNDEFINE_SOURCE,VIR_MIGRATE_PEER2PEER, > > VIR_MIGRATE_LIVE, VIR_MIGRATE_TUNNELLED > > > > Also, it seems I need to configure a NFS mount og the dir > > /var/lib/nova/instances > > and thus configures file system access between all compute nodes. > > > > *My question is:* > > Is this the only way to configure a Live migration of instances in > Openstack ? i.e. configure a nfs mount of directories? > > > > Best regards > > Yngvi > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > Post to : openstack@lists.openstack.org > Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
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