Hi everyone,
Russell, Would HA manager also manage ovn-controller switch over?
Yes, indirectly. The way this is typically handled is by using a virtual
IP that moves to whatever host is currently the master
Cool, then ovn-controller does not have to be HA aware.
In my understanding, the virtual IP feature in Pacemaker (i.e. IPaddr2)
works if both active and passive nodes of the cluster are in the same IP
subnet.
For some deployments, this would mean both nodes a located on the same
physical rack. This is not actually a fault-tolerant design (think
blackout).
If I'm getting virtual IP addresses in Pacemaker correct, wouldn't it be
better to make ovn-controller HA aware? That is, have a node switching
command (akin to ovsdb-server/connect-active-ovsdb-server) and let
Pacemaker make use it?
If this sounds reasonable, I can take on it probably.
If not, I'd greatly appreciate if someone could explain me what I'm missing.
--
Thanks,
Valentine Sinitsyn
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