分發系統-expect

  yum install -y expect
  自動遠端登入
 #! /usr/bin/expect
set host "192.168.133.132"
set passwd "123456"
spawn ssh root@$host
expect {
"yes/no" { send "yes\r"; exp_continue}
"assword:" { send "$passwd\r" }
}
interact

自動遠端登入後，執行命令並退出

#!/usr/bin/expect
set user "root"
set passwd "123456"
spawn ssh [email protected]

expect {
"yes/no" { send "yes\r"; exp_continue}
"password:" { send "$passwd\r" }
}
expect "]*"
send "touch /tmp/12.txt\r"
expect "]*"
send "echo 1212 > /tmp/12.txt\r"
expect "]*"
send "exit\r"

 

傳遞引數

#!/usr/bin/expect

set user [lindex $argv 0]
set host [lindex $argv 1]
set passwd "123456"
set cm [lindex $argv 2]
spawn ssh $user@$host

expect {
"yes/no" { send "yes\r"}
"password:" { send "$passwd\r" }
}
expect "]*"
send "$cm\r"
expect "]*"
send "exit\r"

 

自動同步檔案

#!/usr/bin/expect
set passwd "123456"
spawn rsync -av [email protected]:/tmp/12.txt /tmp/
expect {
"yes/no" { send "yes\r"}
"password:" { send "$passwd\r" }
}
expect eof

傳遞引數並退出

#!/usr/bin/expect

set user [lindex $argv 0]
set host [lindex $argv 1]
set passwd "123456"
set cm [lindex $argv 2]
spawn ssh $user@$host

expect {
"yes/no" { send "yes\r"}
"password:" { send "$passwd\r" }
}
expect "]*"
send "$cm\r"
expect "]*"
send "exit\r"

 

指定host和要同步的檔案

#!/usr/bin/expect
set passwd "123456"
set host [lindex $argv 0]
set file [lindex $argv 1]
spawn rsync -av $file root@$host:$file
expect {
"yes/no" { send "yes\r"}
"password:" { send "$passwd\r" }
}
expect eof

構建檔案分發系統

 需求背景對於大公司而言，肯定時不時會有網站或者配置檔案更新，而且使用的機器肯定也是好多臺，少則幾臺，多則幾十甚至上百臺。所以，自動同步檔案是至關重要的。
 實現思路首先要有一臺模板機器，把要分發的檔案準備好，然後只要使用expect指令碼批量把需要同步的檔案分發到目標機器即可。
 核心命令rsync -av --files-from=list.txt  /  root@host:/

# 檔案分發系統的實現
 rsync.expect 內容
#!/usr/bin/expect
set passwd "123456"
set host [lindex $argv 0]
set file [lindex $argv 1]
spawn rsync -av --files-from=$file / root@$host:/
expect {
"yes/no" { send "yes\r"}
"password:" { send "$passwd\r" }
}
expect eof
 ip.list內容
192.168.133.132
192.168.133.133
......

rsync.sh內容

#!/bin/bash
for ip in `cat ip.list`
do
    echo $ip
    ./rsync.expect $ip list.txt
done

命令批量執行

#exe.expect的內容
#!/usr/bin/expect
set host [lindex $argv 0]
set passwd "123456"
set cm [lindex $argv 1]
spawn ssh root@$host
expect {
"yes/no" { send "yes\r"}
"password:" { send "$passwd\r" }
}
expect "]*"
send "$cm\r"
expect "]*"
send "exit\r"

# exe.sh的內容
#!/bin/bash
for ip in `cat ip.list`
do
    echo $ip
    ./exe.expect $ip "w;free -m;ls /tmp&