#!/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

图2

3、修改脚本 xsync 具有执行权限

[ydr@yangdarun01 bin]$ chmod +x xsync

4、测试脚本

[ydr@yangdarun01 ~]$ xsync /home/ydr/bin

5、将脚本复制到/bin中，以便全局调用

[ydr@yangdarun01 bin]$ sudo cp xsync /bin/

6、同步环境变量配置（root所有者）

[ydr@yangdarun01 ~]$ sudo ./bin/xsync /etc/profile.d/my_env.sh

7、让环境变量生效

[ydr@yangdarun02 bin]$ source /etc/profile

[ydr@yangdarun03 opt]$ source /etc/profile

三、Hadoop集群脚本

脚本实现

1、在# /home/ydr/bin 目录下创建myhadoop.sh /jpsall文件(一定要在bin目录下！！）

2、[ydr@yangdarun01 ~]$ vim 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 yangdarun01 "/opt/module/hadoop-3.1.3/sbin/start-dfs.sh"
        echo " --------------- 启动 yarn ---------------"
        ssh yangdarun02 "/opt/module/hadoop-3.1.3/sbin/start-yarn.sh"
        echo " --------------- 启动 historyserver ---------------"
        ssh yangdarun01 "/opt/module/hadoop-3.1.3/bin/mapred --daemon start historyserver"
;;
"stop")
        echo " =================== 关闭 hadoop集群 ==================="

        echo " --------------- 关闭 historyserver ---------------"
        ssh yangdarun01 "/opt/module/hadoop-3.1.3/bin/mapred --daemon stop historyserver"
        echo " --------------- 关闭 yarn ---------------"
        ssh yangdarun02 "/opt/module/hadoop-3.1.3/sbin/stop-yarn.sh"
        echo " --------------- 关闭 hdfs ---------------"
        ssh yangdarun01 "/opt/module/hadoop-3.1.3/sbin/stop-dfs.sh"
;;
*)
    echo "Input Args Error..."
;;
esac

图3

3、[ydr@yangdarun01 ~]$ vim jpsall

#!/bin/bash

for host in yangdarun01 yangdarun02 yangdarun03
do
        echo =============== $host ===============
        ssh $host jps
done

~                                                                                                              
~