Description of problem:
ovn_metadata_agent is still up but all neutron-haproxy-ovnmeta are down. So no metadata are provided to new VM.

After restarting container "ovn_metadata_agent", all "neutron-haproxy-ovnmeta" container are back and instance get their metadata back.

Version-Release number of selected component (if applicable): 16.2.3

The only log found is :
/var/log/containers/stdouts/neutron-haproxy-ovnmeta-

2023-03-16T13:05:48.306094087+01:00 stderr F [WARNING] 074/113738 (91677) : Exiting Master process...
2023-03-16T13:05:48.306330908+01:00 stderr F [ALERT] 074/113738 (91677) : Current worker 91680 exited with code 143
2023-03-16T13:05:48.306336518+01:00 stderr F [WARNING] 074/113738 (91677) : All workers exited. Exiting... (143)
2023-03-16T13:09:23.524106739+01:00 stderr F [WARNING] 074/114341 (97109) : Exiting Master process...
2023-03-16T13:09:23.524403206+01:00 stderr F [ALERT] 074/114341 (97109) : Current worker 97112 exited with code 143
2023-03-16T13:09:23.524408679+01:00 stderr F [WARNING] 074/114341 (97109) : All workers exited. Exiting... (143)
2023-03-16T13:33:33.474678351+01:00 stderr F [WARNING] 074/121350 (118921) : Exiting Master process...
2023-03-16T13:33:33.474903230+01:00 stderr F [ALERT] 074/121350 (118921) : Current worker 118924 exited with code 143
2023-03-16T13:33:33.474908538+01:00 stderr F [WARNING] 074/121350 (118921) : All workers exited. Exiting... (143)