Akka Clustering无法正常工作

时间：2017-10-31 21:57:34

标签： akka-cluster

我正在尝试按照提供的here

教程学习Akka Clustering

我创建了应用，回购邮件是here。

正如教程中提到的，我已经启动了FrontEndApp 

> runMain TransformationFrontendApp
[info] Running TransformationFrontendApp 
[INFO] [10/31/2017 17:28:05.293] [run-main-0] [akka.remote.Remoting] Starting remoting
[INFO] [10/31/2017 17:28:05.543] [run-main-0] [akka.remote.Remoting] Remoting started; listening on addresses :[akka.tcp://ClusterSystem@localhost:54746]
[INFO] [10/31/2017 17:28:05.556] [run-main-0] 
[akka.cluster.Cluster(akka://ClusterSystem)] Cluster Node 
[akka.tcp://ClusterSystem@localhost:54746] - Starting up...
[INFO] [10/31/2017 17:28:05.648] [run-main-0] 
[akka.cluster.Cluster(akka://ClusterSystem)] Cluster Node 
[akka.tcp://ClusterSystem@localhost:54746] - Registered cluster JMX MBean 
[akka:type=Cluster]
[INFO] [10/31/2017 17:28:05.648] [run-main-0] 
[akka.cluster.Cluster(akka://ClusterSystem)] Cluster Node 
[akka.tcp://ClusterSystem@localhost:54746] - Started up successfully
[WARN] [10/31/2017 17:28:05.683] [ClusterSystem-akka.actor.default-dispatcher-2] 
[WARN] [10/31/2017 17:28:05.748] [New I/O boss #3] 
[NettyTransport(akka://ClusterSystem)] Remote connection to [null] failed with java.net.ConnectException: Connection refused: /127.0.0.1:2551
[WARN] [10/31/2017 17:28:05.750] [New I/O boss #3] 
[NettyTransport(akka://ClusterSystem)] Remote connection to [null] failed with java.net.ConnectException: Connection refused: /127.0.0.1:2552
[WARN] [10/31/2017 17:28:05.751] [ClusterSystem-akka.remote.default-remote-dispatcher-12]        [akka.tcp://ClusterSystem@localhost:54746/system/endpointManager/reliableEndpointWriter-akka.tcp%3A%2F%2FClusterSystem%40127.0.0.1%3A2551-0] Association with remote system [akka.tcp://ClusterSystem@127.0.0.1:2551] has failed, address is now gated for [5000] ms. Reason: [Association failed with [akka.tcp://ClusterSystem@127.0.0.1:2551]] Caused by: [Connection refused: /127.0.0.1:2551]

即使我在2551和2552启动后端应用程序后，上述警告信息也会不断重复。

2551上启动后端演员的终端日志。

> runMain TransformationBackendApp 2551
[info] Running TransformationBackendApp 2551
[INFO] [10/31/2017 17:28:50.867] [run-main-0] [akka.remote.Remoting] Starting remoting
[INFO] [10/31/2017 17:28:51.122] [run-main-0] [akka.remote.Remoting] Remoting started; listening on addresses :[akka.tcp://ClusterSystem@localhost:2551]
[INFO] [10/31/2017 17:28:51.134] [run-main-0] [akka.cluster.Cluster(akka://ClusterSystem)] Cluster Node [akka.tcp://ClusterSystem@localhost:2551] - Starting up...
[INFO] [10/31/2017 17:28:51.228] [run-main-0] [akka.cluster.Cluster(akka://ClusterSystem)] Cluster Node [akka.tcp://ClusterSystem@localhost:2551] - Registered cluster JMX MBean [akka:type=Cluster]
[INFO] [10/31/2017 17:28:51.228] [run-main-0] [akka.cluster.Cluster(akka://ClusterSystem)] Cluster Node [akka.tcp://ClusterSystem@localhost:2551] - Started up successfully
[WARN] [10/31/2017 17:28:51.259] [ClusterSystem-akka.actor.default-dispatcher-3] [akka.tcp://ClusterSystem@localhost:2551/system/cluster/core/daemon/downingProvider] Don't use auto-down feature of Akka Cluster in production. See 'Auto-downing (DO NOT USE)' section of Akka Cluster documentation.
[   ERROR] [10/31/2017 17:28:51.382] [ClusterSystem-akka.remote.default-remote-dispatcher-5] [akka://ClusterSystem/system/endpointManager/reliableEndpointWriter-akka.tcp%3A%2F%2FClusterSystem%40localhost%3A2551-2/endpointWriter] dropping message [class akka.actor.ActorSelectionMessage] for non-local recipient [Actor[akka.tcp://ClusterSystem@127.0.0.1:2551/]] arriving at [akka.tcp://ClusterSystem@127.0.0.1:2551] inbound addresses are [akka.tcp://ClusterSystem@localhost:2551]

最后[Error]日志不断重复。

2552年开始后端演员的终端日志。

> runMain TransformationBackendApp 2552
[info] Running TransformationBackendApp 2552
[INFO] [10/31/2017 17:28:25.451] [run-main-0] [akka.remote.Remoting] Starting remoting
[INFO] [10/31/2017 17:28:25.689] [run-main-0] [akka.remote.Remoting] Remoting started; listening on addresses :[akka.tcp://ClusterSystem@localhost:2552]
[INFO] [10/31/2017 17:28:25.706] [run-main-0] [akka.cluster.Cluster(akka://ClusterSystem)] Cluster Node [akka.tcp://ClusterSystem@localhost:2552] - Starting up...
[INFO] [10/31/2017 17:28:25.803] [run-main-0] [akka.cluster.Cluster(akka://ClusterSystem)] Cluster Node [akka.tcp://ClusterSystem@localhost:2552] - Registered cluster JMX MBean [akka:type=Cluster]
[INFO] [10/31/2017 17:28:25.803] [run-main-0] [akka.cluster.Cluster(akka://ClusterSystem)] Cluster Node [akka.tcp://ClusterSystem@localhost:2552] - Started up successfully
[WARN] [10/31/2017 17:28:25.836] [ClusterSystem-akka.actor.default-dispatcher-2] [akka.tcp://ClusterSystem@localhost:2552/system/cluster/core/daemon/downingProvider] Don't use auto-down feature of Akka Cluster in production. See 'Auto-downing (DO NOT USE)' section of Akka Cluster documentation.
[WARN] [10/31/2017 17:28:25.909] [New I/O boss #3] [NettyTransport(akka://ClusterSystem)] Remote connection to [null] failed with java.net.ConnectException: Connection refused: /127.0.0.1:2551
[WARN] [10/31/2017 17:28:25.910] [ClusterSystem-akka.remote.default-remote-dispatcher-13] [akka.tcp://ClusterSystem@localhost:2552/system/endpointManager/reliableEndpointWriter-akka.tcp%3A%2F%2FClusterSystem%40127.0.0.1%3A2551-0] Association with remote system [akka.tcp://ClusterSystem@127.0.0.1:2551] has failed, address is now gated for [5000] ms. Reason: [Association failed with [akka.tcp://ClusterSystem@127.0.0.1:2551]] Caused by: [Connection refused: /127.0.0.1:2551]
[INFO] [10/31/2017 17:28:25.914] [ClusterSystem-akka.actor.default-dispatcher-4] [akka://ClusterSystem/deadLetters] Message [akka.cluster.InternalClusterAction$InitJoin$] from Actor[akka://ClusterSystem/system/cluster/core/daemon/joinSeedNodeProcess-1#-937368711] to Actor[akka://ClusterSystem/deadLetters] was not delivered. [1] dead letters encountered. This logging can be turned off or adjusted with configuration settings 'akka.log-dead-letters' and 'akka.log-dead-letters-during-shutdown'.
[ERROR] [10/31/2017 17:28:25.958] [ClusterSystem-akka.remote.default-remote-dispatcher-17] [akka://ClusterSystem/system/endpointManager/reliableEndpointWriter-akka.tcp%3A%2F%2FClusterSystem%40localhost%3A2552-2/endpointWriter] dropping message [class akka.actor.ActorSelectionMessage] for non-local recipient [Actor[akka.tcp://ClusterSystem@127.0.0.1:2552/]] arriving at [akka.tcp://ClusterSystem@127.0.0.1:2552] inbound addresses are [akka.tcp://ClusterSystem@localhost:2552]

不确定backend群集节点无法检测到彼此以及frontend具有后端的actor节点的原因是什么。

我是否会错过任何设置？

1 个答案:

答案 0 :(得分：1)

问题在于你的application.conf。你有akka.remote.netty.tcp.hostname =“localhost”和akka.cluster.seed-nodes = [“akka.tcp：//ClusterSystem@127.0.0.1：2551”，“akka.tcp：// ClusterSystem @ 127.0.0.1:2552" 。您必须使用localhost或127.0.0.1，而不是两者：

akka {

  actor {
    provider = "akka.cluster.ClusterActorRefProvider"
  }

  remote {
    log-remote-lifecycle-events = off
    netty.tcp {
      hostname = "localhost"
      port = 0
    }
  }

  cluster {
    seed-nodes = ["akka.tcp://ClusterSystem@localhost:2551", "akka.tcp://ClusterSystem@localhost:2552"]
    auto-down-unreachable-after = 10s
  }

}
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