[byryan]

If you're doing it yourself, learn Ansible, you'll do it once and be set forever.

You do not need "managed" database services. A managed database is no different from apt install postgesql followed by a scheduled backup.

Genuinely no disrespect, but these statements really make it seem like you have limited experience building an HA scalable system. And no, you don't need to be Netflix or Amazon to build software at scale, or require high availability.