Hi, Mark,
Mark Fenbers schrieb:
> Bottom line: What trick can I use to determine whether a box has a
> living, breathing Pg database if I don't know the DB owner?
If all your Postmasters run on the default port, use nmap on the port,
so you see that postmasters are running there. When they run, then there
must be a cluster with databases, at least the template ones.
If your "baseline distro" is debian, ssh into the machines, and do
pg_lsclusters.
HTH,
Markus