分发系统（上）

分发系统介绍

1.安装命令：

[root@weixing01 ~]# yum install -y expect
已加载插件：fastestmirror
base                                                                       | 3.6 kB  00:00:00     
epel/x86_64/metalink                                                       | 8.1 kB  00:00:00     
epel                               

2.自动远程登录并执行：interact表示留在远程，不退出

[root@weixing01 sbin]# vi 1.expect

#! /usr/bin/expect
set host "192.168.188.129"
set passwd "w914"
spawn ssh root@$host
expect {
"yes/no" { send "yes\r"; exp_continue}
"password:" { send "$passwd\r" }
}
interact

[root@weixing01 sbin]# chmod a+x 1.expect 
[root@weixing01 sbin]# ./1.expect 
spawn ssh [email protected]
The authenticity of host '192.168.188.129 (192.168.188.129)' can't be established.
ECDSA key fingerprint is SHA256:SL6ZOvpHHtEoro8AzeNBXqrM3mr2oXbPaSeXO+LQr1U.
ECDSA key fingerprint is MD5:26:0e:7a:96:d6:3a:c5:57:57:2b:6d:1a:1e:42:c9:01.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.188.129' (ECDSA) to the list of known hosts.
[email protected]'s password: 
Last login: Wed Apr 25 21:24:50 2018 from 192.168.188.1

3.远程登录并执行命令，然后退出：

[root@weixing01 sbin]# vi 2.expect

#!/usr/bin/expect
set user "root"
set passwd "w4"
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"

[root@weixing01 sbin]# chmod a+x 2.expect 
[root@weixing01 sbin]# ./2.expect 
spawn ssh [email protected]
[email protected]'s password: 
Last login: Wed Apr 25 21:30:12 2018 from 192.168.188.130
[root@weixing-02 ~]# touch /tmp/12.txt
[root@weixing-02 ~]# echo 1212 > /tmp/12.txt

检测运行

[root@weixing-02 ~]# [root@weixing01 sbin]# ./1.expect 
spawn ssh [email protected]
[email protected]'s password: 
Last login: Wed Apr 25 21:36:07 2018 from 192.168.188.130
[root@weixing-02 ~]# ls -l /tmp/12.txt 
-rw-r--r-- 1 root root 5 4月  25 21:36 /tmp/12.txt
[root@weixing-02 ~]# cat /tmp/12.txt 
1212

4.传递参数：

[root@weixing01 sbin]# vim 3.expect

#!/usr/bin/expect

set user [lindex $argv 0]
set host [lindex $argv 1]
set passwd "w4"
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"

[root@weixing01 sbin]# chmod a+x 3.expect 
[root@weixing01 sbin]# ./3.expect root 192.168.188.129 ls
spawn ssh [email protected]
[email protected]'s password: 
Last login: Wed Apr 25 21:36:46 2018 from 192.168.188.130
[root@weixing-02 ~]# ls
1.txt  2.txt  anaconda-ks.cfg  a.txt  BugReport.txt  grep

执行多条命令

[root@weixing-02 ~]# [root@weixing01 sbin]# ./3.expect root 192.168.188.129 "ls;w;vmstat 1"
spawn ssh [email protected]
[email protected]'s password: 
Last login: Wed Apr 25 21:44:15 2018 from 192.168.188.130
[root@weixing-02 ~]# ls;w;vmstat 1
1.txt  2.txt  anaconda-ks.cfg  a.txt  BugReport.txt  grep
 21:44:43 up 20 min,  2 users,  load average: 0.00, 0.01, 0.03
USER     TTY      FROM             LOGIN@   IDLE   JCPU   PCPU WHAT
root     pts/0    192.168.188.1    21:24   17:31   0.02s  0.02s -bash
root     pts/1    192.168.188.130  21:44    0.00s  0.01s  0.00s w
procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----
 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st
 2  0      0 305904   2076 142944    0    0   102     9  111  162  0  1 99  0  0
 0  0      0 305904   2076 142936    0    0     0     0   59   75  0  0 100  0  0
 0  0      0 305904   2076 142936    0    0     0    16   68   80  0  0 100  0  0
 0  0      0 305904   2076 142936    0    0     0     0   54   65  0  0 100  0  0