I'm probably just an idiot, but I ran unmanaged postgres on Fly.io, which is basically self hosting on a vm, and it wasn't fun.

I did this for just under two years, and I've lost count of how many times one or more of the nodes went down and I had to manually deregister it from the cluster with repmgr, clone a new vm and promote a healthy node to primary. I ended up writing an internal wiki page with the steps. I never got it: if one of the purposes of clusters is having higher availability, why did repmgr not handle zombie primaries?

Again, I'm probably just an idiot out of my depth with this. And I probably didn't need a cluster anyway, although with the nodes failing like they did, I didn't feel comfortable moving to a single node setup as well.

I eventually switched to managed postgres, and it's amazing being able to file a sev1 for someone else to handle when things go down, instead of the responsibility being on me.