Hadoop HA 机制架构、要点、原理：

 

 

 

 

 

 

 

 

 

需要的机器（规划）：

至少三台机器

HOSTNAME        IP              安装软件ZK               HADOOP进程HADOOP-NODE1    10.20.0.11      JDK,HADOOP              NameNode,DFSZKFailoverController(ZKFC)HADOOP-NODE2    10.20.0.12      JDK,HADOOP              NameNode,DFSZKFailoverController(ZKFC)HADOOP-NODE3    10.20.0.13      JDK,HADOOP              ResourceManagerHADOOP-NODE4    10.20.0.14      JDK,HADOOP              ResourceManagerHADOOP-NODE5    10.20.0.15      JDK,HADOOP,ZK           QuorumPeerMain,JournalNode,DataNode,NodeManagerHADOOP-NODE6    10.20.0.16      JDK,HADOOP,ZK           QuorumPeerMain,JournalNode,DataNode,NodeManagerHADOOP-NODE7    10.20.0.17      JDK,HADOOP,ZK           QuorumPeerMain,JournalNode,DataNode,NodeManager