Comment 17 for bug 1654116

One possible root cause may be that if the machine running the unit is loaded, the time between checking for leadership and the lease expiring may have passed before the hook gets to write the leadership settings. It's very unusual that the unit leader changes so often as seen in the logs. This fact points to a possible load issue because the leader should only change if the current leader did not to get update its lease before it expired; if it doesn't that is likely due to load.