Comment 5 for bug 1519473

We might be seeing this in PS4.5 as well. Not much in all-machines.log other than leadership manager stopped spam as per pastebin:

https://pastebin.canonical.com/148810/

(starts line #2)

Then a combination of the leadership and tomb dying:

https://pastebin.canonical.com/148811/

It recovers after we bounce both jujud-machine-0 and juju-db.