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Hi all,
I have deployed Openstack Liberty with github openstack charms- branch 16.07/stable in HA.
After deployment I am hitting one issue with Nova cloud controller.
root@radcmaas01:~/deployments# nova service-list
+------------------+----------------------+----------+---------+-------+----------------------------+-----------------+
| Binary           | Host                 | Zone     | Status  | State | Updated_at                 | Disabled Reason |
+------------------+----------------------+----------+---------+-------+----------------------------+-----------------+
| nova-conductor   | juju-machine-1-lxc-6 | internal | enabled | up    | 2016-08-19T08:35:03.000000 | -               |
| nova-cert        | juju-machine-1-lxc-6 | internal | enabled | up    | 2016-08-19T08:35:04.000000 | -               |
| nova-scheduler   | juju-machine-1-lxc-6 | internal | enabled | up    | 2016-08-19T08:35:03.000000 | -               |
| nova-cert        | juju-machine-2-lxc-7 | internal | enabled | up    | 2016-08-19T08:36:06.000000 | -               |
| nova-conductor   | juju-machine-2-lxc-7 | internal | enabled | up    | 2016-08-19T08:36:05.000000 | -               |
| nova-scheduler   | juju-machine-2-lxc-7 | internal | enabled | up    | 2016-08-19T08:36:06.000000 | -               |
| nova-compute     | rigid-reaction       | nova     | enabled | up    | 2016-08-19T08:35:10.000000 | -               |
| nova-consoleauth | juju-machine-1-lxc-6 | internal | enabled | up    | 2016-08-19T08:35:02.000000 | -               |
| nova-consoleauth | juju-machine-2-lxc-9 | internal | enabled | up    | 2016-08-19T08:36:04.000000 | -               |
| nova-cert        | juju-machine-2-lxc-9 | internal | enabled | down  | 2016-08-19T08:36:13.000000 | -               |
| nova-conductor   | juju-machine-2-lxc-9 | internal | enabled | up    | 2016-08-19T08:36:09.000000 | -               |
| nova-scheduler   | juju-machine-2-lxc-9 | internal | enabled | up    | 2016-08-19T08:36:09.000000 | -               |
+------------------+----------------------+----------+---------+-------+----------------------------+-----------------+

root@radcmaas01:~/deployments# nova service-list
+------------------+----------------------+----------+---------+-------+----------------------------+-----------------+
| Binary           | Host                 | Zone     | Status  | State | Updated_at                 | Disabled Reason |
+------------------+----------------------+----------+---------+-------+----------------------------+-----------------+
| nova-conductor   | juju-machine-1-lxc-6 | internal | enabled | down  | 2016-08-19T08:35:13.000000 | -               |
| nova-cert        | juju-machine-1-lxc-6 | internal | enabled | down  | 2016-08-19T08:35:14.000000 | -               |
| nova-scheduler   | juju-machine-1-lxc-6 | internal | enabled | down  | 2016-08-19T08:35:13.000000 | -               |
| nova-cert        | juju-machine-2-lxc-7 | internal | enabled | up    | 2016-08-19T08:36:16.000000 | -               |
| nova-conductor   | juju-machine-2-lxc-7 | internal | enabled | up    | 2016-08-19T08:36:15.000000 | -               |
| nova-scheduler   | juju-machine-2-lxc-7 | internal | enabled | up    | 2016-08-19T08:36:16.000000 | -               |
| nova-compute     | rigid-reaction       | nova     | enabled | down  | 2016-08-19T08:35:10.000000 | -               |
| nova-consoleauth | juju-machine-1-lxc-6 | internal | enabled | down  | 2016-08-19T08:35:12.000000 | -               |
| nova-consoleauth | juju-machine-2-lxc-9 | internal | enabled | up    | 2016-08-19T08:36:14.000000 | -               |
| nova-cert        | juju-machine-2-lxc-9 | internal | enabled | up    | 2016-08-19T08:36:13.000000 | -               |
| nova-conductor   | juju-machine-2-lxc-9 | internal | enabled | up    | 2016-08-19T08:36:09.000000 | -               |
| nova-scheduler   | juju-machine-2-lxc-9 | internal | enabled | up    | 2016-08-19T08:36:09.000000 | -               |
+------------------+----------------------+----------+---------+-------+----------------------------+-----------------+


If you see above one of my Nova cloud controller is down, then it takes nova-compute service down as welll and its been going on. SO when I try to spin up a VM , it complains "No valid host found"
now if I pause all HA nova-cloud-controller nodes having one nova-cloud-controller unit as active running unit then it just works fine.
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