Hadoop集群管理脚本

这里介绍两个常用的管理hadoop集群的脚本

• hadoop集群启停脚本myhadoop.sh

  #!/bin/bash
  if [ $# -lt 1 ]
  then
  	echo "No Args Input..."
   	exit ;
  fi
  
  case $1 in
  "start")
   	echo " =================== 启动 hadoop 集群 ==================="
   	echo " --------------- 启动 hdfs ---------------"
   	ssh hadoop102 "/opt/module/hadoop-3.1.3/sbin/start-dfs.sh"
   	echo " --------------- 启动 yarn ---------------"
   	ssh hadoop103 "/opt/module/hadoop-3.1.3/sbin/start-yarn.sh"
   	echo " --------------- 启动 historyserver ---------------"
   	ssh hadoop102 "/opt/module/hadoop-3.1.3/bin/mapred --daemon start 
  historyserver"
  ;;
  "stop")
   	echo " =================== 关闭 hadoop 集群 ==================="
   	echo " --------------- 关闭 historyserver ---------------"
   	ssh hadoop102 "/opt/module/hadoop-3.1.3/bin/mapred --daemon stop 
  historyserver"
   	echo " --------------- 关闭 yarn ---------------"
   	ssh hadoop103 "/opt/module/hadoop-3.1.3/sbin/stop-yarn.sh"
   	echo " --------------- 关闭 hdfs ---------------"
   	ssh hadoop102 "/opt/module/hadoop-3.1.3/sbin/stop-dfs.sh"
  ;;
  *)
   	echo "Input Args Error..."
  ;;
  esac
  

• 查看三台服务器 Java 进程脚本：jpsall.sh

  #!/bin/bash
  for host in hadoop102 hadoop103 hadoop104
  do
   	echo =============== $host ===============
   	ssh $host jps 
  done