Ran through the install using discourse-setup (I don’t think I ever have yet, so no time like the present!) and the following error showed up:
Checking your domain name . . .
WARNING:: This server does not appear to be accessible at dotest.example.net:443.
A connection to http://dotest.example.net (port 80) also fails.
This suggests that dotest.example.net resolves to the wrong IP address
or that traffic is not being routed to your server.
Google: "open ports YOUR CLOUD SERVICE" for information for resolving this problem.
You should probably answer "n" at the next prompt and disable Let's Encrypt.
This test might not work for all situations,
so if you can access Discourse at http://dotest.example.net, you might try anyway.
I believe this happened as nc isn’t installed so it couldn’t properly run the test. We should ensure nc is available before erroring out on this check.
Hmm. Then the question becomes, does discourse-doctor install nc just for one test that might not be necessary, or just say, “well, you don’t have nc, so you’re on your own to see that you have ports open and mapped correctly.”?
I don’t like installing software if it’s not necessary. I think I’ll change the message to recommend installing nc if they want it.
In that case either stop the script and tell them to re-run with nc installed, or print a warning that the check was skipped because nc was not installed?
Well, it’s 6 months later. I haven’t added a “you don’t have nc, so I can’t test your ports” message, but no one else has complained. Perhaps the language:
Google: \"open ports YOUR CLOUD SERVICE\" for information for resolving this problem.
You should probably answer \"n\" at the next prompt and disable Let's Encrypt.
This test might not work for all situations,
so if you can access Discourse at http://$HOST, you might try anyway.
is good enough. It was never a but really an annoyance for someone who had enough sysadmin sense to not want to use Ubuntu. It works as expected on Ubuntu (I haven’t checked other distros to see). I’m inclined to let this sleeping dog lie.