# 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
        
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 debug@127.0.0.1 -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™. 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 `some_node@127.0.0.1`.

You can also get a remote shell:

    $ erl -name debug@127.0.0.1 -setcookie if-server-has-one -remsh some_node@127.0.0.1