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
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