Question

我是akka noob：我正在尝试使用akka-sample-cluster-scala transformatino示例并将其分解为在两台计算机上运行。

我相信我只能通过配置来做到这一点。我怀疑那是我很天真。

我也在vm中运行这些网络，因为网络设置正确，因此wierd ip范围。有一个域，所以我使用NAT和仅主机网络。这个可能是一个问题，但我相信它不会是这个。

我也从netstat知道这不是因为其他东西有端口。 nmap -p 2550 192.168.56.101表示端口在后端运行时打开

我不明白为什么前端试图连接到2551上的主机（当我确实通过2550它失败了，同样的例外（下图））

所以我拿了akka-sample-cluster-scala / src / main / resources / application.conf并将其更改为所以在＆＃39; master＆＃39;

akka {
  actor {
    provider = "akka.cluster.ClusterActorRefProvider"
  }
  remote {
    log-remote-lifecycle-events = off
    netty.tcp {
      hostname = "192.168.56.101"
      port = 2550
    }
  }

  cluster {
    seed-nodes = [
      "akka.tcp://ClusterSystem@192.168.56.102:2551",
      "akka.tcp://ClusterSystem@192.168.56.102:2552"]

    auto-down-unreachable-after = 10s
  }
}

on＆＃39;奴隶＆＃39; （他们是一样的）

akka {
  actor {
    provider = "akka.cluster.ClusterActorRefProvider"
  }
  remote {
    log-remote-lifecycle-events = off
    netty.tcp {
      hostname = "192.168.56.101"
      port = 2550
    }
  }

  cluster {
    seed-nodes = [
      "akka.tcp://ClusterSystem@192.168.56.102:2551",
      "akka.tcp://ClusterSystem@127.168.56.102:2552"]

    auto-down-unreachable-after = 10s
  }
}

然后我希望后端运行我正在做这个

/activator "runMain sample.cluster.transfortion.TransformationBackend 2550"

在另一端

./activator "runMain sample.cluster.transformation.TransformationFrontend 2551"

我怀疑我完全糊涂了，这对任何读书都是无稽之谈。如果你能帮助我多多赞赏。

错误是在一台机器上后端似乎开始并等待

在客户端我得到以下异常

[info] [INFO] [04/24/2014 15:06:23.989] [main] [Remoting] Starting remoting
[error] Exception in thread "main" org.jboss.netty.channel.ChannelException: Failed to bind to: /192.168.56.101:2551
[error]     at org.jboss.netty.bootstrap.ServerBootstrap.bind(ServerBootstrap.java:272)
[error]     at akka.remote.transport.netty.NettyTransport$$anonfun$listen$1.apply(NettyTransport.scala:392)
[error]     at akka.remote.transport.netty.NettyTransport$$anonfun$listen$1.apply(NettyTransport.scala:389)
[error]     at scala.util.Success$$anonfun$map$1.apply(Try.scala:206)
[error]     at scala.util.Try$.apply(Try.scala:161)
[error]     at scala.util.Success.map(Try.scala:206)
[error]     at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:235)
[error]     at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:235)
[error]     at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32)
[error]     at akka.dispatch.BatchingExecutor$Batch$$anonfun$run$1.processBatch$1(BatchingExecutor.scala:67)
[error]     at akka.dispatch.BatchingExecutor$Batch$$anonfun$run$1.apply$mcV$sp(BatchingExecutor.scala:82)
[error]     at akka.dispatch.BatchingExecutor$Batch$$anonfun$run$1.apply(BatchingExecutor.scala:59)
[error]     at akka.dispatch.BatchingExecutor$Batch$$anonfun$run$1.apply(BatchingExecutor.scala:59)
[error]     at scala.concurrent.BlockContext$.withBlockContext(BlockContext.scala:72)
[error]     at akka.dispatch.BatchingExecutor$Batch.run(BatchingExecutor.scala:58)
[error]     at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:41)
[error]     at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:393)
[error]     at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
[error]     at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
[info] [INFO] [04/24/2014 15:06:24.140] [ClusterSystem-akka.remote.default-remote-dispatcher-15] [akka://ClusterSystem/system/remoting-terminator] Shutting down remote daemon.
[error]     at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
[error]     at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
[error] Caused by: java.net.BindException: Cannot assign requested address
[error]     at sun.nio.ch.Net.bind0(Native Method)
[error]     at sun.nio.ch.Net.bind(Net.java:444)
[error]     at sun.nio.ch.Net.bind(Net.java:436)
[error]     at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:214)
[error]     at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
[error]     at org.jboss.netty.channel.socket.nio.NioServerBoss$RegisterTask.run(NioServerBoss.java:193)
[error]     at org.jboss.netty.channel.socket.nio.AbstractNioSelector.processTaskQueue(AbstractNioSelector.java:372)
[error]     at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:296)
[error]     at org.jboss.netty.channel.socket.nio.NioServerBoss.run(NioServerBoss.java:42)
[error]     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
[error]     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
[info] [INFO] [04/24/2014 15:06:24.146] [ClusterSystem-akka.remote.default-remote-dispatcher-15] [akka://ClusterSystem/system/remoting-terminator] Remote daemon shut down; proceeding with flushing remote transports.
[error]     at java.lang.Thread.run(Thread.java:744)

Answer 1

前端代码

object TransformationFrontend {
  def main(args: Array[String]): Unit = {
    // Override the configuration of the port when specified as program argument
    val port = if (args.isEmpty) "0" else args(0)
    val config = ConfigFactory.load()

    val system = ActorSystem("ClusterSystem", config)
    val frontend = system.actorOf(Props[TransformationFrontend], name = "frontend")

    val counter = new AtomicInteger
    import system.dispatcher
    system.scheduler.schedule(2.seconds, 2.seconds) {
      implicit val timeout = Timeout(5 seconds)
      (frontend ? TransformationJob("hello-" + counter.incrementAndGet())) onSuccess {
        case result => println(result)
      }
    }

  }
}

后端代码：

object TransformationBackend {
  def main(args: Array[String]): Unit = {
    // Override the configuration of the port when specified as program argument
    val port = if (args.isEmpty) "0" else args(0)
    val config = ConfigFactory.load()

    val system = ActorSystem("ClusterSystem", config)
    system.actorOf(Props[TransformationBackend], name = "backend")
  }
}

前端配置：

akka {
  actor {
    provider = "akka.cluster.ClusterActorRefProvider"
  }
  remote {
    log-remote-lifecycle-events = off
    netty.tcp {
      hostname = "192.168.56.102"
      port = 2551
    }
  }

  cluster {
    roles = [frontend]
    seed-nodes = [
      "akka.tcp://ClusterSystem@192.168.56.102:2551"]

    auto-down-unreachable-after = 10s
  }
}

后端配置：

akka {
  actor {
    provider = "akka.cluster.ClusterActorRefProvider"
  }
  remote {
    log-remote-lifecycle-events = off
    netty.tcp {
      hostname = "192.168.56.101"
      port = 2550
    }
  }

  cluster {
    roles = [backend]
    seed-nodes = [
      "akka.tcp://ClusterSystem@192.168.56.102:2551"]

    auto-down-unreachable-after = 10s
  }
}

也应该在这些更改之后添加，指定从执行的语句中省略端口

无法让akka在两台不同的机器上运行 - 无法分配请求的地址

1 个答案: