Question

扩展其中一个问题： Hadoop: Connecting to ResourceManager failed

Hadoop 2.6.1

我确实配置了ResourceManager HA。

当我杀了当地人的时候。 ResourceManager（检查集群），然后发生故障转移，其他服务器上的ResourceManager变为活动状态。不幸的是，当我尝试使用＆＃39; local＆＃39;实例nodemanager，它没有＆＃39;故障转移＆＃39;激活ResourceManager的请求。

yarn@stg-hadoop106:~$ jps
26738 Jps
23463 DataNode
23943 DFSZKFailoverController
24297 NodeManager
25690 ResourceManager
23710 JournalNode
23310 NameNode

#kill and start ResourceManager, so the failover occur
yarn@stg-hadoop106:~$ kill -9 25690
~/hadoop/sbin/yarn-daemon.sh  start resourcemanager

yarn@stg-hadoop106:~$ ~/hadoop/bin/yarn  rmadmin -getServiceState rm1
standby
yarn@stg-hadoop106:~$ ~/hadoop/bin/yarn  rmadmin -getServiceState rm2
active

#run my class:

14:56:51.476 [main] INFO  o.apache.samza.job.yarn.ClientHelper - trying to connect to RM 0.0.0.0:8032
2015-10-29 14:56:51 RMProxy [INFO] Connecting to ResourceManager at /0.0.0.0:8032
14:56:51.572 [main] DEBUG o.a.h.s.a.util.KerberosName - Kerberos krb5 configuration not found, setting default realm to empty
2015-10-29 14:56:51 NativeCodeLoader [WARN] Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
14:56:51.575 [main] DEBUG o.a.hadoop.util.PerformanceAdvisory - Falling back to shell based
2015-10-29 14:56:52 Client [INFO] Retrying connect to server: 0.0.0.0/0.0.0.0:8032. Already tried 0 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
2015-10-29 14:56:53 Client [INFO] Retrying connect to server: 0.0.0.0/0.0.0.0:8032. Already tried 1 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)

纱-site.xml中

 <property>
     <name>yarn.resourcemanager.ha.enabled</name>
     <value>true</value>
 </property>
 <property>
     <name>yarn.resourcemanager.cluster-id</name>
     <value>clusterstaging</value>
 </property>
 <property>
     <name>yarn.resourcemanager.ha.rm-ids</name>
     <value>rm1,rm2,rm3</value>
 </property>
 <property>
     <name>yarn.resourcemanager.hostname.rm1</name>
     <value>stg-hadoop106</value>
 </property>
 <property>
     <name>yarn.resourcemanager.hostname.rm2</name>
     <value>stg-hadoop107</value>
 </property>
 <property>
     <name>yarn.resourcemanager.hostname.rm3</name>
     <value>stg-hadoop108</value>
 </property>
 <property>
     <name>yarn.resourcemanager.zk-address</name>
     <value>A:2181,B:2181,C:2181</value>
 </property>

我没有配置

<name>yarn.resourcemanager.hostname</name>

因为它应该按原样运作＆＃39; - 如果我错了，请纠正我：）

我确实尝试了

<name>yarn.client.failover-proxy-provider</name>

但没有成功

有什么想法吗？也许我错误地期望客户找到活跃的RM节点？

您是否知道如何在“自动故障转移”中切换节点的活动/待机状态？选项？

~/hadoop/bin/yarn  rmadmin -failover rm1 rm2
    Exception in thread "main" java.lang.UnsupportedOperationException: RMHAServiceTarget doesn't have a corresponding ZKFC address

~/hadoop/bin/yarn  rmadmin -transitionToActive rm1 rm2
    Automatic failover is enabled for org.apache.hadoop.yarn.client.RMHAServiceTarget@2b72cb8a
    Refusing to manually manage HA state, since it may cause

Answer 1

如果在自动故障转移模式下启用HA-RM，则无法触发活动备用或反之。并且您应该提供yarn.client.failover-proxy-provider参数，即客户端用于故障转移到Active RM的类。并配置yarn.resourcemanager.hostname以识别RM（即rm1，rm2）。

如果未启用自动故障转移，您可以使用以下方式触发 yarn rmadmin -transitionToStandby rm1

请进行以上更改并回复结果

Hadoop ResourceManager HA在/0.0.0.0:8032连接到ResourceManager

1 个答案: