YARN-HA搭建

集群

node1	node2	node3
NameNode	NameNode
JournalNode	JournalNode	JournalNode
DataNode	DataNode	DataNode
ZK	ZK	ZK
ResourceManager	ResourceManager
NodeManager	NodeManager	NodeManager

zookeeper集群提前启动

[node1/node2/node3]# zkServer.sh start

yarn-site.xml

<configuration>
  <property>
      <name>yarn.nodemanager.aux-services</name>
      <value>mapreduce_shuffle</value>
  </property>
  <property>
      <name>yarn.application.classpath</name>
      <value>
      /opt/app/hadoop-2.8.5/etc/hadoop,
      /opt/app/hadoop-2.8.5/share/hadoop/common/*,
      /opt/app/hadoop-2.8.5/share/hadoop/common/lib/*,
      /opt/app/hadoop-2.8.5/share/hadoop/hdfs/*,
      /opt/app/hadoop-2.8.5/share/hadoop/hdfs/lib/*,
      /opt/app/hadoop-2.8.5/share/hadoop/mapreduce/*,
      /opt/app/hadoop-2.8.5/share/hadoop/mapreduce/lib/*,
      /opt/app/hadoop-2.8.5/share/hadoop/yarn/*,
      /opt/app/hadoop-2.8.5/share/hadoop/yarn/lib/*
      </value>
  </property>
  <!--启用resourcemanager ha-->
  <property>
      <name>yarn.resourcemanager.ha.enabled</name>
      <value>true</value>
  </property>
  <!--声明两台resourcemanager的地址-->
  <property>
      <name>yarn.resourcemanager.cluster-id</name>
      <value>cluster-yarn1</value>
  </property>
  <property>
      <name>yarn.resourcemanager.ha.rm-ids</name>
      <value>rm1,rm2</value>
  </property>
  <property>
      <name>yarn.resourcemanager.hostname.rm1</name>
      <value>node1</value>
  </property>
  <property>
      <name>yarn.resourcemanager.hostname.rm2</name>
      <value>node2</value>
  </property>
  <!--指定zookeeper集群的地址--> 
  <property>
      <name>yarn.resourcemanager.zk-address</name>
      <value>node1:2181,node2:2181,node3:2181</value>
  </property>
  <!--启用自动恢复--> 
  <property>
      <name>yarn.resourcemanager.recovery.enabled</name>
      <value>true</value>
  </property>
  <!--指定resourcemanager的状态信息存储在zookeeper集群--> 
  <property>
      <name>yarn.resourcemanager.store.class</name>     
      <value>org.apache.hadoop.yarn.server.resourcemanager.recovery.ZKRMStateStore</value>
  </property>
</configuration>

yarn-env.sh

export JAVA_HOME=/opt/app/jdk1.8.0_321

启动情况

# 单进程独立启动：
yarn-deamon.sh start/stop resourcemanager/nodemanager
 
# 全部启动：
start-yarn(HA模式无法启动)