Expect 自动任务 集中部署

二、Expect安装

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yum install expect -y

三、Expect使用

使用Expect批量管理和部署服务器大致分为两个步骤,使用for循环读取服务器IP、密码列表并取值,远程执行命令。如下需求,在两台服务器上执行mkdir /tmp/`date +%Y%m%d`命令,如何实现?

首先定义expect 登陆脚本:

1、login.exp,内容如下(详细的参数就不解释了):

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#!/usr/bin/expect -f
set ip [lindex $argv 0 ]
set passwd [lindex $argv 1 ]
set command [lindex $argv 2]
set timeout 1
spawn ssh root@$ip
expect {
"yes/no" { send "yes\r" ;exp_continue }
"password:" { send "$passwd\r" }
}
expect "*#*" { send "$command\r" }
expect eof

2、创建批量执行脚本auto_exec.sh

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#!/bin/sh
#auto exec command
#wugk 20130712
CMD= "$*"
for i in ` awk '{print $1}' passwd .txt`
do
j=` awk - v I= "$i" '{if(I==$1)print $2}' passwd .txt`
expect /data/sh/login .exp  $i  $j   "$CMD"
done

3、建立批量IP、密码文件

cat  passwd.txt内容如下:(第一列为IP,第二列为密码)

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192.168.1.100  abc_123
192.168.1.101  abc_456

四、测试脚本

直接执行:

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/bin/sh auto_exec.sh "mkdir -p /tmp/`date +%Y%m%d`"

然后登陆两台服务器查看是否在/tmp/下生产一个以当前系统日期为名称的目录。

五、SCP远程拷贝

如果需要远程推送文件,重新建立文件login.scp相关参数和auto_exec.sh变量:

1、login.scp内容如下:

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#!/usr/bin/expect -f
set ip [lindex $argv 0 ]
set passwd [lindex $argv 1 ]
set src_file [lindex $argv 2]
set des_dir [lindex $argv 3]
set timeout 1
spawn scp -r $src_file root@$ip:$des_dir
expect {
"yes/no" { send "yes\r" ;exp_continue }
"password:" { send "$passwd\r" }
}
expect "#*"
expect eof

2、auto_exec.sh脚本内容如下

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#!/bin/sh
#auto exec command
#wugk 20130712
read -p "Please Enter insert Source File or DIR: " src_file
echo ======================================================
sleep 1
read -p "Please Enter insert Destination DIR: " des_dir
for i in ` awk '{print $1}' passwd .txt`
do
j=` awk - v I= "$i" '{if(I==$1)print $2}' passwd .txt`
expect login. scp $i  $j $src_file $des_dir
done

密码文件保持不变即可。

六、一键安装expect、scp批量auto_exec.sh脚本:(其实就是如上几个脚本合成的)

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#!/bin/sh
#auto exec expect shell scripts
#wugk 20130712
if
[ ! -e /usr/bin/expect ]; then
yum   install expect -y
fi
#Judge passwd.txt exist
if
[ ! -e . /passwd .txt ]; then
echo -e "The passwd.txt is not exist......Please touch ./passwd.txt ,Content Example:\n192.168.1.11 passwd1\n192.168.1.12 passwd2"
sleep 2 && exit 0
fi
#Auto Tuoch login.exp File
cat >login.exp <<EOF
#!/usr/bin/expect -f
set ip [lindex \$argv 0 ]
set passwd [lindex \$argv 1 ]
set src_file [lindex \$argv 2]
set des_dir [lindex \$argv 3]
set timeout 1
spawn scp -r \$src_file root@\$ip:\$des_dir
expect {
"yes/no" { send "yes\r" ;exp_continue }
"password:" { send "\$passwd\r" }
}
expect "#*"
expect eof
EOF
##Auto exec shell scripts
read -p "Please Enter insert Source File or DIR: " src_file
echo ======================================================
sleep 1
read -p "Please Enter insert Destination DIR: " des_dir
for i in ` awk '{print $1}' passwd .txt`
do
j=` awk - v I= "$i" '{if(I==$1)print $2}' passwd .txt`
expect . /login .exp  $i  $j $src_file $des_dir
done


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