[ClusterLabs] Is fencing really a must for Postgres failover?

[Jehan-Guillaume de Rorthais]

On Mon, 11 Feb 2019 11:54:03 -0500
Digimer <lists at alteeve.ca> wrote:
[...]
> Also, with pacemaker v2, fencing (stonith) became mandatory at a
> programmatic level.

ORLY? What did I missed?