Slave { akka { actor { provider = "akka.cluster.ClusterActorRefProvider" warn-about-java-serializer-usage = false } remote { artery { enabled = on transport = tcp canonical.hostname = "127.0.0.1" canonical.port = 2550 } } cluster { roles = [ "slave" ] } } } Master { akka { actor { provider = "akka.cluster.ClusterActorRefProvider" warn-about-java-serializer-usage = false } remote { artery { enabled = on transport = tcp canonical.hostname = "127.0.0.1" canonical.port = 2552 } } cluster { roles = [ "master" ] } } }