How to connect to erlang node on remote machine

I'm very new in Erlang node and just studing it.
I have some trouble with connecting Erlang nodes on remote machine. And I found following solution:
Erlang (or erlang shell) should be started with same cookie on remote machines, i.e.:

erl -name node1 -setcookie my-cookie
erl -name node2 -setcookie my-cookie

valgrind, dlopen and debug info

You may encounter with following situation: you profile your application with valgrind, run the KCachegrind and you are not seeing debug info for some your modules.

As wrote in the internets this is a bug (http://bugs.kde.org/show_bug.cgi?id=142086, http://bugs.kde.org/show_bug.cgi?id=79362).

In my case I can avoid this bug as following: disable unloading of modules via dlclose.