[RFE] support redundant corosync rings

Bug #1850822 reported by Andrea Ieri
10
This bug affects 1 person
Affects Status Importance Assigned to Milestone
OpenStack HA Cluster Charm
Triaged
Wishlist
Unassigned

Bug Description

Only ring0 is currently supported. The charm should support building a second ring on a separate interface if the cluster members are multi-homed and share a second space.
This would increase resiliency against loss of quorum during partial network outages.

Additionally, the charm should provide an action for healing failed rings (corosync-cfgtool -r), or be able to detect when it's safe to do so automatically.

Changed in charm-hacluster:
status: New → Triaged
importance: Undecided → Wishlist
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