Comment 3 for bug 1849323

I have done a test to double check how the vault charm (and interface-vault-kv) currently behaves when the vault leader switches. output is here - https://paste.ubuntu.com/p/gRmGCGvHDt/

What I see is: 3 units, 1 leader (vault/2), only leader is presenting the tokens.

Then I poweroff vault/2, the leader switches to vault/1 and I see: 3 units, 1 leader (now vault/1) and vault/1 is presenting the same settings that were previously set by vault/2.

Then I poweron vault/2 again and what i see is vault/0 still presents nothing and vault/1 and vault/2 present identical settings and there are no errors.

This is true for both ceph-osd and barbican-vault i.e. a classic and a reactive charm or put another way, one using [1] and one using [2]

[1] https://github.com/juju/charm-helpers/blob/master/charmhelpers/contrib/openstack/vaultlocker.py
[2] https://github.com/openstack-charmers/charm-interface-vault-kv/