本篇文章将详细介绍如何在CentOS7服务器上安装并配置Hadoop3.2.1高可用集群。 Hadoop-HA集群的节点规划如下: IP Address Host Name Node Type User Name 172.16.250.234 DN1/JN1 DataNode/JournalNode hadoop 172.16.250.237 DN2/JN2/RM1 DataNode/JournalNode/ResourceManager hadoop 172.16.250.238 DN3/JN3/RM