[moehm]

Do you need HA, or do you want to minimize downtime? At work we have something like an "error budget", were we accept downtime but try to minimize it. As such we have two nodes with one floating ip and a shared disk. The switch over takes as long as stopping the database on the first node, starting up the database on the second one and switching over the ip. Stuff like kernel updates takes us <1 minute of scheduled downtime, which is good enough for us.

Here is a good talk which resonated with me from the last pgconf: https://www.youtube.com/watch?v=_rYP6xVymtI

If you want more, I think Patroni (by Zalando) is the current best option for you. Patroni handles automatic leader election if the master goes down, and it is open source. Read here more:

https://github.com/patroni/patroni

[cloudnewbie]

Minimizing unintended downtime is the primary intent. Having a second server automatically take over in less than a minute or two would be good enough for me. I'll look in to shared disks and Patroni. Thank you for the pgconf video too.