[openstack-dev] [neutron] possible race condition with nova instance and neutron ports

Saverio Proto saverio.proto at switch.ch
Thu Aug 10 15:33:49 UTC 2017

Thank you.
It worked with the new settings. Now the instances are correctly in
ERROR state of network is not functional.

To solve the performance problem and have 0 instances in ERROR state I
had to enable the neutron-rootwrap-daemon. Without it the dhcp agents
were not fast enough to consume the rabbit queues.



On 09/08/17 14:40, Sławomir Kapłoński wrote:
> With such settings nova is not waiting for info from neutron and that is why Your instances starting without network ready.
> If You will change this timeout to some value higher than 0 then instance will be paused and nova will wait for info from neutron that port is active (You should also check credentials config in neutron server)
> If You will set also vif_plugging_is_fatal=True then nova will put instance in ERROR state if port will not be active after timeout time.

Saverio Proto, Peta Solutions
Werdstrasse 2, P.O. Box, 8021 Zurich, Switzerland
phone +41 44 268 15 15, direct +41 44 268 1573
saverio.proto at switch.ch, http://www.switch.ch


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