Try to be marginally smarter about getting the epmd port, it is set as an init argument from the environment variable.

1 files changed, 7 insertions, 5 deletions

diff --git a/src/rabbit_nodes.erl b/src/rabbit_nodes.erl
index 3150cc017c..a753344cc5 100644
--- a/src/rabbit_nodes.erl
+++ b/src/rabbit_nodes.erl
@@ -78,16 +78,18 @@ diagnostics_node(Node) ->
     [{"~s:", [Node]} |
      case names(Host) of
          {error, Reason} ->
-             EpmdPort = case os:getenv("ERL_EPMD_PORT") of
-                            false -> "4369";
-                            P     -> P
-                        end,
              [{"  * unable to connect to epmd (port ~s) on ~s: ~s~n",
-               [EpmdPort, Host, rabbit_misc:format_inet_error(Reason)]}];
+               [epmd_port(), Host, rabbit_misc:format_inet_error(Reason)]}];
          {ok, NamePorts} ->
              diagnostics_node0(Name, Host, NamePorts)
      end].
 
+epmd_port() ->
+    case init:get_argument(epmd_port) of
+        {ok, [[Port | _] | _]} when is_list(Port) -> Port;
+        error                                     -> "4369"
+    end.
+
 diagnostics_node0(Name, Host, NamePorts) ->
     case [{N, P} || {N, P} <- NamePorts, N =:= Name] of
         [] ->