Add host-info script
A tiny script to help provide some visibility into the migration process.
Given a list of hosts, it will tell you the network owner of the resolved ip, the redirect, whether ports 22 and 443 are open etc.
$ bin/hostinfo staging.gitlab.com gstg.gitlab.com
HOST NETWORK REV HTTPS SSH REDIRECT
staging.gitlab.com Microsoft Corporation 40.84.60.110 Yes Yes https://staging.gitlab.com/users/sign_in
gstg.gitlab.com Google LLC 228.123.227.35.bc.googleusercontent.com. Yes Yes -
or
$ bin/hostinfo gitlab.com gprd.gitlab.com
HOST NETWORK REV HTTPS SSH REDIRECT
gitlab.com Microsoft Corporation gitlab.com. Yes Yes -
gprd.gitlab.com Google LLC 151.145.231.35.bc.googleusercontent.com. No No -