Comment 2 for bug 1738100

Interestingly, while the instance can be started and stopped on a bogus cloud, if I tail nova-api-os-compute.log at the time when I start an instance via `openstack server start test` I get this:

http://paste.ubuntu.com/26185989/

The actual compute node should send a notification about instance power on event so I looked at the logs there.

/var/log/nova/nova-compute.log
http://paste.ubuntu.com/26185995/

There are a lot of neutron-related errors there

2017-12-14 23:48:29.443 237576 ERROR nova.compute.manager [req-5e2c3c1c-c7b7-419d-a2b9-1a3f9cbe2e5a - - - - -] [instance: b325bf7d-d794-4fd4-8f63-e585694f01f2] An error occurred while refreshing the network cache.

while the instance is running and I can connect to it via ssh if I create the right security groups or from a vrouter namespace:

root@converged4:/var/log/nova# virsh list --all
 Id Name State
----------------------------------------------------
 12 instance-00000004 running