集群中常用脚本，持续更新

1.查看启动状态脚本myjps

注：jdk安装路径

#!/bin/bash
for((host=102;host<=104;host++))
do
        echo "====================hadoop$host======================="
        ssh hadoop$host /opt/module/jdk1.8.0_144/bin/jps
done

2.hadoop批量启动脚本hadoop.sh

注：hadoop安装路径

#!/bin/bash

case $1 in
"start"){

	echo "============启动HDFS============="
		/opt/module/hadoop-2.7.2/sbin/start-dfs.sh
	echo "============启动Yarn============="
        ssh hadoop103 "/opt/module/hadoop-2.7.2/sbin/start-yarn.sh"
	echo "============启动历史服务器============="
        /opt/module/hadoop-2.7.2/sbin/mr-jobhistory-daemon.sh start historyserver

};;
"stop"){

	 	echo "============关闭历史服务器============="
        /opt/module/hadoop-2.7.2/sbin/mr-jobhistory-daemon.sh stop historyserver	
		echo "============关闭Yarn============="
        ssh hadoop103 "/opt/module/hadoop-2.7.2/sbin/stop-yarn.sh"
        echo "============关闭HDFS============="
        /opt/module/hadoop-2.7.2/sbin/stop-dfs.sh

};;
esac

3.集群分发脚本xsync

注：每个节点都需要yum -y install rsync

#!/bin/bash
#1 获取输入参数个数，如果没有参数，直接退出
pcount=$#
if [ $pcount -eq 0 ]; then
echo no args;
exit;
fi

#2 获取文件名称
p1=$1
fname=`basename $p1`
echo fname=$fname

#3 获取上级目录到绝对路径
pdir=`cd -P $(dirname $p1); pwd`
echo pdir=$pdir

#4 获取当前用户名称
user=`whoami`

#5 循环,节点数量通过下面调节
for((host=102;host<105;host++)); do
        echo ------------------- hadoop$host --------------
        rsync -av $pdir/$fname $user@hadoop$host:$pdir
done