Display connection specific cookies in Erlang

Question

When setting a cookie on a node with erlang:set_cookie/2 it is possible to set different cookies for different nodes. Is there any way to display, which cookie is set for which node?

Calling erlang:get_cookie/1 does not display this information, only the "default" cookie is displayed.

Example:

Start NodeA with cookie foo and a NodeB with cookie bar. At NodeA now set the cookie to use when communicating with NodeB to bar by calling erlang:set_cookie(NodeB, bar). Pinging now works fine, no "Connection attempt from disallowed node..." errors. Calling erlang:get_cookie() on NodeA however still shows the "default" cookie foo. How can find which cookie is set for NodeB?

Answer 1

It doesn't seem to be documented, but auth:get_cookie/1 does what you want. For your case, you can call auth:get_cookie(NodeB) on NodeA.