WAL Archiver/PITR/Disaster recovery (PG Barman Support)

[davissp14]

Add support for PG Barman

This should be fairly straight forward to support.

1. PG Barman will need to run in its own Machine.
2. It will need to be fronted with haproxy just like a normal member so connections that hit this Machine will still be routed correctly.
3. The Init/Post Init process will need to be adjusted such that only haproxy and Barman are initialized.

Why Barman over something like Wal-G

1. Repmgr works with Barman out of the box.
2. Wal-G is expected to run next to the main database which can lead to resource contention.

[ederenee]

Hey @davissp14, Can I work on this?

[lubien]

Hi @Ederene20 Im actually currently working on this. Let me assign myself too

[ederenee]

Hi @lubien! Thanks for letting me know. If there's anything I can do to collaborate with you on this, please let me know.