Description of problem:
When frr is restarted 3 issues was detected:
1) published routes are deleted in the routers
It could be solve configuring in frr at router level: "bgp graceful-restart"
2) frr dynamic config is deleted and not recovered until sync process reload it
A possible WA restart ovn-bgp-agent just after frr restart.
3) Default routes are deleted form 6 seconds after frr restart.
Under investigation, no wa for the moment. Unique possible for update or programmed restarts is to configure temporary a fixed default route.
For issue n1 and n3 we can probably workaround by enabling bgp graceful-restart in the frr config and doing the same at the zebra level (see https://github.com/openstack-k8s-operators/edpm-ansible/commit/42ea6d1f85ef6c05104cc70f795330dccaf6b823).
I am porting this to 17.1.4 so we can specify zebra graceful_restart time using the tripleo_frr_zebra_graceful_restart_time variable.
As for issue n2 we'd need someone more familiar with the ovn-bgp-agent to chime in.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (RHOSP 17.1.4 bug fix and enhancement advisory), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2024:9974
Comment 32Red Hat Bugzilla
2025-03-22 04:25:18 UTC
The needinfo request[s] on this closed bug have been removed as they have been unresolved for 120 days
Description of problem: When frr is restarted 3 issues was detected: 1) published routes are deleted in the routers It could be solve configuring in frr at router level: "bgp graceful-restart" 2) frr dynamic config is deleted and not recovered until sync process reload it A possible WA restart ovn-bgp-agent just after frr restart. 3) Default routes are deleted form 6 seconds after frr restart. Under investigation, no wa for the moment. Unique possible for update or programmed restarts is to configure temporary a fixed default route.