Description of problem: Using a virt setup with 7 nodes, deployment has Ceph and 3 compute nodes. When trying to live-migrate an instance you find the following error in the nova-compute.log of the host that's currently running the instance: Live Migration failure: operation failed: Failed to connect to remote libvirt URI qemu+tcp://ov-uugkso3o5k-2-exzf5z7st6mi-novacompute-pvxogl3jlxyu.novalocal/system: Unable to resolve address 'ov-uugkso3o5k-2-exzf5z7st6mi-novacompute-pvxogl3jlxyu.novalocal' service '16509': Name or service not known Looking in /etc/hosts you can find the hostnames mapped to IPs, but all entries don't include ".novalocal" in them: # HEAT_HOSTS_START - Do not edit manually within this section! 192.0.2.9 ov-uugkso3o5k-0-liuc7fbnfti6-novacompute-dh7mq5oubb2b 192.0.2.10 ov-uugkso3o5k-1-cdd5mzvqgcjc-novacompute-pqrwgvszrofu 192.0.2.11 ov-uugkso3o5k-2-exzf5z7st6mi-novacompute-pvxogl3jlxyu When you run the "hostname" command on the nodes, the result as ".novalocal" in the end. I added the hostnames with the suffix in each of the above lines in /etc/hosts and was able to live migrate. Version-Release number of selected component (if applicable): openstack-tripleo-0.0.6-dev1717.el7.centos.noarch openstack-nova-api-2015.1.0-4.el7ost.noarch openstack-nova-common-2015.1.0-4.el7ost.noarch How reproducible: 100% Steps to Reproduce: 1. Deploy a virt setup with several compute nodes 2. Launch an instace in the overcloud 3. Determine the host the instance is running on with "nova show" and find a host to migrate it to with "nova host-list" 4. Live migrate: nova live-migration 1578a16e-009c-472c-bd1f-caf639be10b0 ov-uugkso3o5k-2-exzf5z7st6mi-novacompute-pvxogl3jlxyu.novalocal 5. Verify that it migrated with "nova show" and "nova host-describe" 6. Monitor /var/log/nova/nova-compute.log to see if there are errors
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