Most probably, one firewall rule needs to be opened to allow this.
```
12:44 <+olasd> I think it makes sense to open read only access (so, punch a hole in the firewall, and update pg_hba.conf to allow staging hosts to connect as the guest user)
```
Plan, something along the line of:
- [x] fw: Open rule to allow access
- [x] postgres instance: Allow staging host the connection (pg_hba.conf)
- [ ] Update clearly-defined node to integrate the new db access