macro · November 3, 2015 18:05 · Nov 21, 2014 · Oct 14, 2014 · Oct 14, 2014
diff --git a/observer.md b/observer.md
@@ -12,7 +12,7 @@ On your machine, start a hidden Erlang node running the `observer` app:
 
     $ erl -name [email protected] -setcookie if-server-has-one -hidden -run observer
 
-__N.B.:__ If the server is using `-sname`, you need to use `-sname` as well, because Erlang™.
+__N.B.:__ If the server is using `-sname`, you need to use `-sname` as well, because Erlang™. You'll also need to change your system's hostname to match the target host, for the same reason.
 
 In _observer_, go to _Nodes_ - _Connect Node_ and type `[email protected]`.
 

diff --git a/observer.md b/observer.md
@@ -1,3 +1,5 @@
+# Using OTP's observer (appmon replacement) remotely
+
     $ ssh remote-host "epmd -names"
     epmd: up and running on port 4369 with data:
     name some_node at port 58769

diff --git a/observer.md b/observer.md
@@ -0,0 +1,19 @@
+    $ ssh remote-host "epmd -names"
+    epmd: up and running on port 4369 with data:
+    name some_node at port 58769
+        
+Note the `running on port` for `epmd` itself and the port of the node you're interested in debugging. Reconnect to the remote host with these ports forwarded:
+
+    $ ssh -L 4369:localhost:4369 -L 58769:localhost:58769 remote-host
+
+On your machine, start a hidden Erlang node running the `observer` app:
+
+    $ erl -name [email protected] -setcookie if-server-has-one -hidden -run observer
+
+__N.B.:__ If the server is using `-sname`, you need to use `-sname` as well, because Erlang™.
+
+In _observer_, go to _Nodes_ - _Connect Node_ and type `[email protected]`.
+
+You can also get a remote shell:
+
+    $ erl -name [email protected] -setcookie if-server-has-one -remsh [email protected]