Hadoop on Yarn 提交job失败：java.net.ConnectException：Connection refused

报错：

 INFO org.apache.hadoop.service.AbstractService: Service NodeManager failed in state STARTED; cause: org.apache.hadoop.yarn.exceptions.YarnRuntimeException: java.net.ConnectException: Call From slave/192.168.1.110 to 0.0.0.0:8031 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused

org.apache.hadoop.yarn.exceptions.YarnRuntimeException: java.net.ConnectException: Call From slave/192.168.1.110 to 0.0.0.0:8031 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused
    at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.serviceStart(NodeStatusUpdaterImpl.java:181)
    at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
    at org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:121)
    at org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceStart(NodeManager.java:199)
    at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
    at org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:339)
    at org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:386)
Caused by: java.net.ConnectException: Call From slave/192.168.1.110 to 0.0.0.0:8031 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused
    at sun.reflect.GeneratedConstructorAccessor8.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:783)
    at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:730)
    at org.apache.hadoop.ipc.Client.call(Client.java:1351)
    at org.apache.hadoop.ipc.Client.call(Client.java:1300)
    at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
    at $Proxy23.registerNodeManager(Unknown Source)
    at org.apache.hadoop.yarn.server.api.impl.pb.client.ResourceTrackerPBClientImpl.registerNodeManager(ResourceTrackerPBClientImpl.java:68)
    at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:186)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
    at $Proxy24.registerNodeManager(Unknown Source)
    at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.registerWithRM(NodeStatusUpdaterImpl.java:238)
    at org.apache.hadoop.yarn.server.nodemanager.NodeStatusUpdaterImpl.serviceStart(NodeStatusUpdaterImpl.java:175)
    ... 6 more
Caused by: java.net.ConnectException: Connection refused
    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
    at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:599)
    at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
    at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:529)
    at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:493)
    at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:547)
    at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:642)
    at org.apache.hadoop.ipc.Client$Connection.access$2600(Client.java:314)
    at org.apache.hadoop.ipc.Client.getConnection(Client.java:1399)
    at org.apache.hadoop.ipc.Client.call(Client.java:1318)
    ... 18 more

解决：

配置yarn-site.xml，配置nodemanager的地址。

yarn.nodemanager.hostname

hadoop02