Baremetal connectivity broken with HA Openstack OVN
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| Ironic |
Triaged
|
High
|
Unassigned | ||
Bug Description
When using OVN in a HA Openstack environment, baremetal integration to routed VLAN tenant networks is broken. Specifically the N/S routing. The underlying and unfixed Neutron issue is the following: https:/
The short of it is that Neutron has a different scheduling mechanism for external/baremetal ports than it does for the L3 router interface. If these two ports in OVN land on a different chassis (odds are they will) the packets will get dropped. This affects N/S traffic only and does not affect east/west (communication to a VM on the same tenant network).
The symptoms of this depend on what the user is attempting to do:
1. Cannot reach baremetal floating IP
2. Cannot ping the internal router gateway
3. ARP response is not returned from the internal router gateway (arpping <gateway).
To verify this issue is occurring, you can do a `ovn-sbctl show` in the OVN SB database. If the external port and the associated router port are scheduled on different chassis, then you would be hitting this bug.
| Changed in ironic: | |
| status: | New → Triaged |
| importance: | Undecided → High |
