Host not accepting instances

asked 2019-09-25 08:16:57 -0500

Thendar gravatar image

I have a multi host setup that is working with 5 hosts and 1 controller. The 6th host is listed as available, but no instances get created there, nor can I create any instances on that host manually. I am relatively new to OpenStack administration, so if anyone could kindly point me in the right direction to troubleshoot, that would be great.

After a manual attempt from CLI, I have this:

Error: Failed to perform requested operation on instance "host_test", the instance has an error status: Please try again later [Error: Binding failed for port f7070118-ce82-497c-ba1a-a9bac1d8d212, please check neutron logs for more information.]

In /var/log/neutron/openvswitch-agent.log on OpenStack host:

Port f7070118-ce82-497c-ba1a-a9bac1d8d212 not present in bridge br-int

So it seems to have something to do with that, but I am not certain how to proceed.

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I would look for other messages that contain this port's ID.

I would also try to (temporally) disable all healthy hosts, manually create a port, then launch an instance on this port and see if anything changes.

Nuclear option: Save time, stop troubleshooting, reinstall the host.

Bernd Bausch gravatar imageBernd Bausch ( 2019-09-25 19:14:41 -0500 )edit

If I run at ovs-vsctl show on a healthy host I get info missing from the misbehaving host: Port "int-br-em2" Interface "int-br-em2" type: patch options: {peer="phy-br-em2"}

Thendar gravatar imageThendar ( 2019-09-26 09:36:16 -0500 )edit

...and also this: Bridge "br-em2" Port "br-em2" Interface "br-em2" type: internal Port "phy-br-em2" Interface "phy-br-em2" type: patch options: {peer="int-br-em2"}

Thendar gravatar imageThendar ( 2019-09-26 09:36:38 -0500 )edit

Is that additional configuration populated from the config / controller, or manually added?

Thendar gravatar imageThendar ( 2019-09-26 09:37:18 -0500 )edit

It also appears that neutron.service is failing to start: CRITICAL neutron [req-52a80795-ad04-46dd-8230-f67519c54541 - - - - -] Unhandled error: CantStartEngineError: No sql_connection parameter is established

Thendar gravatar imageThendar ( 2019-09-26 10:44:04 -0500 )edit