常用脚本

1.

#!/bin/bash
#1. 判断参数个数
if [ $# -lt 1 ]
then
 echo Not Enough Arguement!
 exit;
fi
#2. 遍历集群所有机器
for host in hadoop102 hadoop103 hadoop104
do
 echo ==================== $host ====================
 #3. 遍历所有目录，挨个发送
 for file in $@
 do
 #4. 判断文件是否存在
 if [ -e $file ]
 then
 #5. 获取父目录
 pdir=$(cd -P $(dirname $file); pwd)
 #6. 获取当前文件的名称
 fname=$(basename $file)
 ssh $host "mkdir -p $pdir"
 rsync -av $pdir/$fname $host:$pdir
 else
 echo $file does not exists!
 fi
 done
done

#!/bin/bash
if [ $# -lt 1 ]
then
    echo "No args input"
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 "no such method!"
esac