yarn 启动时，nodemanager 成功，但是resourcemanager失败解决

问题的描述; yarn 启动时，nodemanager 成功，但是resourcemanager失败.



查看日记的出错信息：
2015-10-11 21:50:20,201 INFO org.apache.hadoop.service.AbstractService: Service org.apache.hadoop.yarn.server.resourcemanager.ResourceTrackerService failed in state STARTED; cause: org.apache
.hadoop.yarn.exceptions.YarnRuntimeException: java.net.BindException: Problem binding to [h3:8031] java.net.BindException: Cannot assign requested address; For more details see:  http://wiki.
apache.org/hadoop/BindException
org.apache.hadoop.yarn.exceptions.YarnRuntimeException: java.net.BindException: Problem binding to [h3:8031] java.net.BindException: Cannot assign requested address; For more details see:  ht
tp://wiki.apache.org/hadoop/BindException
at org.apache.hadoop.yarn.factories.impl.pb.RpcServerFactoryPBImpl.getServer(RpcServerFactoryPBImpl.java:139)
at org.apache.hadoop.yarn.ipc.HadoopYarnProtoRPC.getServer(HadoopYarnProtoRPC.java:65)
at org.apache.hadoop.yarn.ipc.YarnRPC.getServer(YarnRPC.java:54)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceTrackerService.serviceStart(ResourceTrackerService.java:159)
at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
at org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:120)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$RMActiveServices.serviceStart(ResourceManager.java:503)
at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.startActiveServices(ResourceManager.java:898)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$1.run(ResourceManager.java:938)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$1.run(ResourceManager.java:935)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1614)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.transitionToActive(ResourceManager.java:935)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.serviceStart(ResourceManager.java:979)
at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.main(ResourceManager.java:1104)
Caused by: java.net.BindException: Problem binding to [h3:8031] java.net.BindException: Cannot assign requested address; For more details see:  http://wiki.apache.org/hadoop/BindException
at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:719)
at org.apache.hadoop.ipc.Server.bind(Server.java:419)
at org.apache.hadoop.ipc.Server$Listener.<init>(Server.java:561)
at org.apache.hadoop.ipc.Server.<init>(Server.java:2166)
at org.apache.hadoop.ipc.RPC$Server.<init>(RPC.java:897)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Server.<init>(ProtobufRpcEngine.java:505)
at org.apache.hadoop.ipc.ProtobufRpcEngine.getServer(ProtobufRpcEngine.java:480)
at org.apache.hadoop.ipc.RPC$Builder.build(RPC.java:742)
at org.apache.hadoop.yarn.factories.impl.pb.RpcServerFactoryPBImpl.createServer(RpcServerFactoryPBImpl.java:169)




分析了下，地址绑定失败，大概的意思是指8301的端口给占用了。
google下，说是Namenode和ResourceManger如果不是同一台机器，不能在NameNode上启动 yarn，应该在ResouceManager所在的机器上启动yarn。现在问题解决了。