akka cluster connection refused

[Johan Dindaine]

Hi,

I'm trying to connect two nodes together using akka-cluster and even if I thought they were setup correctly, while trying to launch the application I ran into connection problems.

[info] [WARN] [05/28/2014 16:50:09.017] [ClusterSystem-akka.remote.default-remote-dispatcher-66] [Remoting] Tried to associate with unreachable remote address [akka.tcp://Cluste...@10.xxx.xxx.xxx:15672].  Address is now gated for 5000 ms, all messages to this address will be delivered to dead letters. Reason: Connection refused: /10.xxx.xxx.xxx:15672

I have got two nodes and they are configured to talk to each other despite the connection problem:

On node A:

akka {

  actor {

    provider = "akka.cluster.ClusterActorRefProvider"

  }

  remote {

    [*]

    netty.tcp {

      hostname = "10.yyy.yyy.yyy"

      port = 15699

    }

  }

  cluster {

    seed-nodes = ["akka.tcp://Cluste...@10.xxx.xxx.xxx:15672"]

  }

}

And on node B

akka {

  actor {

    provider = "akka.cluster.ClusterActorRefProvider"

  }

  remote {

    [*]

    netty.tcp {

      hostname = "10.xxx.xxx.xxx"

      port = 15672

    }

  }

  cluster {

    seed-nodes = ["akka.tcp://Cluste...@10.yyy.yyy.yyy: 15699"]

  }

}

[Martynas Mickevičius]

You have seed-nodes setting pointing to other node in the cluster. So naturally when you first start either node it tries to connect to the other one which has not been started yet. Thus the log message: Reason: Connection refused: /10.xxx.xxx.xxx:15672

You can choose which node you want to start first and have its own address in the seed-node list. This way the first node will start the cluster with itself.

Then when you start the second node, it will try to connect to the first one and will successfully join the cluster.

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Martynas Mickevičius

Typesafe – Reactive Apps on the JVM

[Johan Dindaine]

I was clearly miss-configured.

I tried it again from the akka-sample-cluster-java activator template and this has worked so I modified my configuration based on the word count example.

And now things work.

Thanks