spruce up sysadmin docs (esp w.r.t. monitoring)
context
- we have let sysadmin docs lag a great deal from what we actually know and use to deploy sb. with an uptick in interest in self-hosting, we should update them.
- in particular:
- notes on how to set up monitoring (and unencrypted example config files for p8s/grafana)
- optionally: option to disable monitoring via env var toggle?
- notes on how to set up a diagnostics, channel-creation, and support channel
- notes on how to interpret healthchecks