** Also affects: neutron/kilo
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1461148
Title:
Dead L3 agent should reflect HA router states
Status in neutron:
Fix Released
Status in neutron kilo series:
New
Bug description:
The main use case of L3 HA is bouncing back from a machine (That is
running a L3 agent) dying. In this case, with bp/report-ha-router-
master merged, any active routers on that node will remain active in
the Neutron DB (As the dead agent cannot update the server of
anything). A backup node will pick up the routers previously active on
the dead node and will update their status, resulting in the Neutron
DB having the router 'active' on two different nodes. This can mess up
l2pop as HA router interfaces will now be arbitrarily hosted on any of
the 'active' hosts.
The solution would be that when a L3 agent is marked as dead, to go
ahead and change the HA router states on that agent to from active to
standby, and also to update the router ports 'host' value to point to
the new active agent.
Note: This bug is at least partially coupled with
https://bugs.launchpad.net/neutron/+bug/1365476. Ideally we could
solve the two bugs in two separate patches with no dependencies.
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