2018-06-07 Linux学习

Posted 2020-11-12

20.31 expect脚本同步文件

自动同步文件

#!/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

操作过程

[[email protected] sbin]# vim 4.expect
写入上面 自动同步文件 内容

[[email protected] sbin]# chmod a+x 4.expect 

[[email protected] sbin]# ./4.expect 
spawn rsync -av [email protected]:/tmp/12.txt /tmp/
[email protected]‘s password: 
receiving incremental file list
12.txt

sent 30 bytes  received 84 bytes  20.73 bytes/sec
total size is 5  speedup is 0.04

20.32 expect脚本指定host和要同步的文件

指定host和要同步的文件

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

操作过程

[[email protected] sbin]# vim 5.expect
写入上面的内容 指定host和要同步的文件

[[email protected] sbin]# chmod a+x 5.expect 

[[email protected] sbin]# ./5.expect 192.168.106.165 /tmp/12.txt 
spawn rsync -av /tmp/12.txt [email protected]:/tmp/12.txt
[email protected]‘s password: 
sending incremental file list

sent 31 bytes  received 12 bytes  7.82 bytes/sec
total size is 5  speedup is 0.12

[[email protected] sbin]# ./5.expect 192.168.106.165 "/tmp/12.txt" 
spawn rsync -av /tmp/12.txt [email protected]:/tmp/12.txt
[email protected]‘s password: 
sending incremental file list

sent 31 bytes  received 12 bytes  7.82 bytes/sec
total size is 5  speedup is 0.12

20.33 构建文件分发系统

需求背景
对于大公司而言，肯定时不时会有网站或者配置文件更新，而且使用的机器肯定也是好多台，少则几台，多则几十甚至上百台。所以，自动同步文件是至关重要的。

实现思路
首先要有一台模板机器，把要分发的文件准备好，然后只要使用expect脚本批量把需要同步的文件分发到目标机器即可。
核心命令rsync -av --files-from=list.txt??/[email protected]:/

文件分发系统的实现

rsync.expect 内容

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

ip.list内容
192.168.133.132
192.168.133.133
......

rsync.sh 内容

#!/bin/bash
for ip in cat /tmp/ip.list
do
./rsync.expect $ip /tmp/file.list
done

操作过程

[[email protected] sbin]# vim rsync.expect
#!/usr/bin/expect
set passwd "123456"
set host [lindex $argv 0]
set file [lindex $argv 1]
spawn rsync -avR --files-from=$file / [email protected]$host:/
expect {
"yes/no" { send "yes\r" }
"password:" { send "$passwd\r" }
}
expect eof

[[email protected] sbin]# chmod a+x rsync.expect

[[email protected] sbin]# vim /tmp/file.list
/tmp/12.txt
/root/shell/1.sh
/root/111/222/123.txt

[[email protected] sbin]# vim /tmp/ip.list
192.168.106.165

[[email protected] sbin]# vim rsync.sh
#!/bin/bash
for ip in cat /tmp/ip.list
do
./rsync.expect $ip /tmp/file.list
done

[[email protected] sbin]# sh -x rsync.sh 
++ cat /tmp/ip.list
+ for ip in ‘`cat /tmp/ip.list`‘
+ ./rsync.expect 192.168.106.165 /tmp/file.list
spawn rsync -avR --files-from=/tmp/file.list / [email protected]:/
[email protected]‘s password: 
building file list ... rsync: link_stat "/root/shell/1.sh" failed: No such file or directory (2)
done
root/
root/111/
root/111/222/
root/111/222/123.txt
tmp/
tmp/12.txt

sent 221 bytes  received 62 bytes  43.54 bytes/sec
total size is 5  speedup is 0.02
rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1052) [sender=3.0.9]

20.34 批量远程执行命令

exe.expect 内容

#!/usr/bin/expect
set host [lindex $argv 0]
set passwd "123456"
set cm [lindex $argv 1]
spawn ssh [email protected]$host
expect {
"yes/no" { send "yes\r"}
"password:" { send "$passwd\r" }
}
expect "]"
send "$cm\r"
expect "]"
send "exit\r"

exe.sh 内容

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

操作过程

[[email protected] sbin]# vim exe.expect
写入上面 exe.expect 内容

[[email protected] sbin]# chmod a+x exe.expect

[[email protected] sbin]# vim exe.sh
#!/bin/bash
for ip in cat /tmp/ip.list
do
echo $ip
./exe.expect $ip "w;free -m;ls /tmp"
done

[[email protected] sbin]# sh exe.sh 
192.168.106.165
spawn ssh [email protected]
[email protected]‘s password: 
Last login: Tue Apr 24 17:47:27 2018 from 192.168.106.160
[[email protected] ~]# w;free -m;ls /tmp
 17:48:41 up  1:51,  2 users,  load average: 0.00, 0.01, 0.05
USER     TTY      FROM             [email protected]   IDLE   JCPU   PCPU WHAT
root     pts/0    192.168.106.1    15:57   15:13   0.04s  0.04s -bash
root     pts/1    192.168.106.160  17:48    1.00s  0.02s  0.01s w
              total        used        free      shared  buff/cache   available
Mem:           1822         159        1460           8         202        1473
Swap:          4095           0        4095
12.txt  systemd-private-419467cd2d3a46f89cde1d660ef24ce8-vgauthd.service-QH8NC0
d6z     systemd-private-419467cd2d3a46f89cde1d660ef24ce8-vmtoolsd.service-fDRGcr
etc