[Bug 1907686] Re: ovn: instance unable to retrieve metadata

[James Page]

Deployed groovy from proposed; restarted all ovn-central daemons post
deployment and then started a new instance.

Instance booted and correctly retrieved metadata:

2021-05-13 12:46:06.269 2619 INFO eventlet.wsgi.server [-]
192.168.0.83,<local> "GET /openstack/2018-08-27/network_data.json
HTTP/1.1" status: 200  len: 490 time: 0.0040092


** Tags removed: verification-needed-groovy
** Tags added: verification-done-groovy

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https://bugs.launchpad.net/bugs/1907686

Title:
  ovn: instance unable to retrieve metadata

Status in charm-ovn-chassis:
  Invalid
Status in Ubuntu Cloud Archive:
  Fix Released
Status in Ubuntu Cloud Archive ussuri series:
  Fix Committed
Status in Ubuntu Cloud Archive victoria series:
  New
Status in Ubuntu Cloud Archive wallaby series:
  Fix Released
Status in neutron:
  Invalid
Status in openvswitch package in Ubuntu:
  Fix Released
Status in openvswitch source package in Focal:
  Fix Committed
Status in openvswitch source package in Groovy:
  Fix Committed
Status in openvswitch source package in Hirsute:
  Fix Released

Bug description:
  [Impact]
  Cloud instances are unable to retrieve metadata on startup.

  [Test Case]
  Deploy OpenStack with OVN/OVS
  Restart OVN central controllers
  Create a new instance
  Instance will fail to retrieve metadata with the message from the original bug report displayed in the metadata agent log on the local hypervisor

  [Regression Potential]
  The fix for this issue is included in the upstream 2.13.3 release of OVS.
  The fix ensures that SSL related connection issues are correctly handling in python3-ovs avoiding an issue where the connection to the OVN SB IDL is reset and never recreated.
  The OVN drivers use python3-ovsdbapp which in turn bases off code provided by python3-ovs.

  
  [Original Bug Report]
  Ubuntu:focal
  OpenStack: ussuri
  Instance port: hardware offloaded

  instance created, attempts to access metadata - metadata agent can't
  resolve the port/network combination:

  2020-12-10 15:00:18.258 4732 INFO neutron.agent.ovn.metadata.agent [-] Port d65418a6-d0e9-47e6-84ba-3d02fe75131a in datapath 37706e4d-ce2a-4d81-8c61-3fd12437a0a7 bound to our ch
  assis
  2020-12-10 15:00:31.672 8062 ERROR neutron.agent.ovn.metadata.server [-] No port found in network 37706e4d-ce2a-4d81-8c61-3fd12437a0a7 with IP address 10.5.1.155
  2020-12-10 15:00:31.673 8062 INFO eventlet.wsgi.server [-] 10.5.1.155,<local> "GET /openstack HTTP/1.1" status: 404  len: 297 time: 0.0043790
  2020-12-10 15:00:34.639 8062 ERROR neutron.agent.ovn.metadata.server [-] No port found in network 37706e4d-ce2a-4d81-8c61-3fd12437a0a7 with IP address 10.5.1.155
  2020-12-10 15:00:34.639 8062 INFO eventlet.wsgi.server [-] 10.5.1.155,<local> "GET /openstack HTTP/1.1" status: 404  len: 297 time: 0.0040138

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