centos7 hadoop集群启动脚本

在所在用户下的/bin目录创建文件

## 此路径要加入到/etc/profile的PATH中
/root/bin  or  /home/user/bin 

vim ./myhadoop.sh

插入以下内容,其中 linux1，linux2对应集群中dfs配置节点，和yarn配置节点，后面文件路径为自己安装的hadoop路径，我的路径是/usr/local/hadoop-3.2.0

#!/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 linu1 "/usr/local/hadoop-3.2.0/sbin/start-dfs.sh"
        echo " --------------- 启动 yarn ---------------"
        ssh linux2 "/usr/local/hadoop-3.2.0/sbin/start-yarn.sh"
        echo " --------------- 启动 historyserver ---------------"
        ssh linux1 "/usr/local/hadoop-3.2.0/bin/mapred --daemon start historyserver"
;;
"stop")
        echo " =================== 关闭 hadoop集群 ==================="

        echo " --------------- 关闭 historyserver ---------------"
        ssh linux1 "/usr/local/hadoop-3.2.0/bin/mapred --daemon stop historyserver"
        echo " --------------- 关闭 yarn ---------------"
        ssh linux2 "/usr/local/hadoop-3.2.0/sbin/stop-yarn.sh"
        echo " --------------- 关闭 hdfs ---------------"
        ssh linux1 "/usr/local/hadoop-3.2.0/sbin/stop-dfs.sh"
;;
*)
    echo "Input Args Error..."
;;
esac

赋予文件权限

chmod 777 /root/bin/myhadoop

开启/关闭集群(因为已经将myhadoop.sh的父路径加入到PATH中，所以可以直接调用myhadoop.sh)

## 开启集群
myhadoop.sh start
## 关闭集群
myhadoop.sh stop