无法绑定到 Akka Actor 系统的远程 IP 地址

Question

我在初始化远程 IP 地址上的参与者系统时遇到了问题。我正在使用 akka 演员和戏剧！框架。代码和远程参与者系统都在远程机架空间服务器上。当我尝试在另一台服务器上创建远程参与者系统时，它无法绑定到该 IP 地址。我认为这不是网络或防火墙问题，因为 Rackspace 说他们打开了服务器之间的所有连接。这是我收到的错误消息：

[error] application - 

! Internal server error, for request [POST /payment/] ->

java.lang.ExceptionInInitializerError: null
    at     Routes$$anonfun$routes$1$$anonfun$apply$3$$anonfun$apply$4.apply(routes_routing.scala:44) ~[classes/:na]
    at Routes$$anonfun$routes$1$$anonfun$apply$3$$anonfun$apply$4.apply(routes_routing.scala:44) ~[classes/:na]
    at play.core.Router$HandlerInvoker$$anon$3.call(Router.scala:1080) ~[play_2.9.1-2.0.1.jar:2.0.1]
    at play.core.Router$Routes$class.invokeHandler(Router.scala:1255) ~[play_2.9.1-2.0.1.jar:2.0.1]
    at Routes$.invokeHandler(routes_routing.scala:14) ~[classes/:na]
    at Routes$$anonfun$routes$1$$anonfun$apply$3.apply(routes_routing.scala:44) ~[classes/:na]

Caused by: org.jboss.netty.channel.ChannelException: Failed to bind to: /172.17.100.232:2554
    at org.jboss.netty.bootstrap.ServerBootstrap.bind(ServerBootstrap.java:298) ~[netty-3.3.0.Final.jar:na]
    at akka.remote.netty.NettyRemoteServer.start(Server.scala:53) ~[akka-remote-2.0.2.jar:2.0.2]
    at akka.remote.netty.NettyRemoteTransport.start(NettyRemoteSupport.scala:73) ~[akka-remote-2.0.2.jar:2.0.2]
    at akka.remote.RemoteActorRefProvider.init(RemoteActorRefProvider.scala:95) ~[akka-remote-2.0.2.jar:2.0.2]
    at akka.actor.ActorSystemImpl._start(ActorSystem.scala:568) ~[akka-actor-2.0.2.jar:2.0.2]
    at akka.actor.ActorSystemImpl.start(ActorSystem.scala:575) ~[akka-actor-2.0.2.jar:2.0.2]

Caused by: java.net.BindException: Cannot assign requested address
    at sun.nio.ch.Net.bind(Native Method) ~[na:1.6.0_26]
    at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:126) ~[na:1.6.0_26]
    at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:59) ~[na:1.6.0_26]
    at org.jboss.netty.channel.socket.nio.NioServerSocketPipelineSink.bind(NioServerSocketPipelineSink.java:140) ~[netty-3.3.0.Final.jar:na]
    at org.jboss.netty.channel.socket.nio.NioServerSocketPipelineSink.handleServerSocket(NioServerSocketPipelineSink.java:92) ~[netty-3.3.0.Final.jar:na]
    at org.jboss.netty.channel.socket.nio.NioServerSocketPipelineSink.eventSunk(NioServerSocketPipelineSink.java:66) ~[netty-3.3.0.Final.jar:na]

我在这里创建远程actor系统：

object Payment extends Controller {
  var goodies: AuthNetActorObject = null

  val system = ActorSystem("RemoteCreation", ConfigFactory.load.getConfig("remotecreation"))
  val myActor = system.actorOf(Props[authNetActor.AuthNetActorMain], name = "remoteActor")
  ...
}

这是我在 Application.conf 文件中定义远程创建的地方：

remotecreation{ #user defined name for the configuration
    include "common"
    akka {
            actor{
                    #serializer{
                    #       proto = "akka.serialization.ProtobufSerializer"
                    #       daemon-create = "akka.serialization.DaemonMsgCreateSerializer"
                    #}

                    #serialization-bindings{
                    #       "com.google.protobuf.GeneratedMessage" = proto
                    #       "akka.remote.DaemonMsgCreate" = daemon-create
                    #}

                    deployment{
                            /remoteActor{   #Specifically has to be the name of the remote actor
                                    remote="akka://RemoteCreation@172.17.100.232:2554"
                            #       router = "round-robin"
                            #       nr-of-instances = 10
                            #       target {
                            #               nodes = ["akka://RemoteCreation@172.17.100.232:2554", "akka://RemoteCreation@172.17.100.224:2554"]
                            #       }
                            }
                    }
            }
    }
}

这是我在定义中包含的 common.conf 文件：

akka {

  actor {
    provider = "akka.remote.RemoteActorRefProvider"
  }

  remote {
        transport = "akka.remote.netty.NettyRemoteTransport"
        log-received-messages = on
        log-sent-messages = on
        log-remote-lifecycle-events = on

    netty {
      hostname = "172.17.100.232"       #Broadcast IP address of remote system
      port = 2554
        log-received-messages = on
        log-sent-messages = on
          log-remote-lifecycle-events = on

    }
  }
}

Answer 1

这可能意味着其他东西正在使用该机器上的该端口。登录该机器并以 root 身份运行 netstat -anp | grep 2554 并查看该端口处于 LISTEN 状态。如果是这样，进程 ID 将位于最后一列。