On: PostgreSQL 9.6.2, 9.5.6, 9.4.11, 9.3.16 and 9.2.20 released

[undergrowth54]

> Users should plan to apply this update at the next scheduled downtime.

Folks who are looking for ways to upgrade PostgreSQL without downtime might want to take a look at this setup using pacemaker: https://github.com/gocardless/our-postgresql-setup

http://www.interdb.jp/blog/pgsql/pg_pacemaker_01/ digs into playing with the vagrant box a tiny bit.

EDIT-- ah, found the talk explaining it: https://www.youtube.com/watch?v=SAkNBiZzEX8