The @diagnostics@ subcommand of @arvados-client@ performs a variety of checks to help confirm that your Arvados installation has been properly configured. It is extremely helpful to validate that your install is successful.
+Depending on where you are running the installer, you need to provide @-internal-client@ or @-external-client@.
+
+* If you are running the diagnostics from one of the Arvados machines inside the private network, you want @-internal-client@.
+* If you running the diagnostics from your workstation outside of the private network, you should use @-external-client@.
+
Here is an example of it in action:
<pre>