分發系統介紹、expect腳本遠程登錄、expect腳本遠程執行命令、expect腳本傳遞參數
阿新 • • 發佈：2018-02-28
expect腳本 expect腳本遠程登錄 expect腳本遠程執行命令 expect腳本傳遞參數 20.27 分發系統介紹
應用場景
當業務越做越大，服務器需求越來越多，幾臺服務器的話還好一點；當十幾、幾十臺的時候，工作量就非常大！並且不規範，需要一個模板機分發到各個機器上去。
可以用開源的軟件，expect腳本語言，進行實現分發系統的功能。
20.28 expect腳本遠程登錄
-
yum install -y expect
- 自動遠程登錄，並執行命令
#!/usr/bin/expect set host "192.168.21.130" set passwd "rootroot" spawn ssh root@$host expect { "yes/no" {send "yes\r"; exp_continue} "assword:" {send "$passwd\r"} } interact #表示停留在機器上 #如果需要退出 可以expect eof
執行操作
[root@qingyun-02 sbin]# vim 1.expect #清空遠程登錄的記錄 [root@qingyun-02 sbin]# vi /root/.ssh/known_hosts #增加執行權限 [root@qingyun-02 sbin]# chmod a+x 1.expect #執行 [root@qingyun-02 sbin]# ./1.expect spawn ssh [email protected] The authenticity of host ‘192.168.21.130 (192.168.21.130)‘ can‘t be established. ECDSA key fingerprint is SHA256:e6Fx3oJ8GcMbFnmTV7JIcvZ3sG6W6yrfvdKccXk+c7c. ECDSA key fingerprint is MD5:15:57:6c:19:21:a2:e4:3e:df:19:27:13:c2:2e:8e:ba. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added ‘192.168.21.130‘ (ECDSA) to the list of known hosts. [email protected]‘s password: Last login: Wed Feb 28 08:57:58 2018 from 192.168.21.1
20.29 expect腳本遠程執行命令
- 自動遠程登錄後，執行命令並退出
#腳本代碼 #!/usr/bin/expect set user "root" set passwd "rootroot" 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"
執行
[root@qingyun-02 sbin]# chmod a+x 2.expect
[root@qingyun-02 sbin]# ./2.expect
spawn ssh [email protected]
[email protected]‘s password:
Last login: Wed Feb 28 09:30:05 2018 from 192.168.21.132
[root@qingyun-01 ~]# touch /tmp/12.txt
[root@qingyun-01 ~]# echo 1212 > /tmp/12.txt
[root@qingyun-01 ~]# [root@qingyun-02 sbin]#
#查看遠程端機上結果
[root@qingyun-02 sbin]# ./1.expect
spawn ssh [email protected]
[email protected]‘s password:
Last login: Wed Feb 28 09:36:13 2018 from 192.168.21.132
[root@qingyun-01 ~]# ls /tmp/12.txt
/tmp/12.txt
[root@qingyun-01 ~]# cat /tmp/12.txt
1212
20.30 expect腳本傳遞參數
- 傳遞參數
[root@qingyun-02 sbin]# vim 3.expect
#!/usr/bin/expect
set user [lindex $argv 0]
set host [lindex $argv 1]
set passwd "rootroot"
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"
執行
[root@qingyun-02 sbin]# chmod a+x 3.expect
[root@qingyun-02 sbin]# ./3.expect root 192.168.21.130 ls
spawn ssh [email protected]
[email protected]‘s password:
Last login: Wed Feb 28 09:39:16 2018 from 192.168.21.132
[root@qingyun-01 ~]# ls
anaconda-ks.cfg shell
[root@qingyun-01 ~]# [root@qingyun-02 sbin]#
[root@qingyun-02 sbin]# ./3.expect root 192.168.21.130 "ls;w;vmstat 1"
#當有多個命令 需要用雙引號 作為一個參數傳進去
spawn ssh [email protected]
[email protected]‘s password:
Last login: Wed Feb 28 09:46:40 2018 from 192.168.21.132
[root@qingyun-01 ~]# ls;w;vmstat 1
anaconda-ks.cfg shell
09:49:34 up 1:00, 2 users, load average: 0.00, 0.01, 0.05
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root pts/0 192.168.21.1 08:57 12:46 0.03s 0.03s -bash
root pts/1 192.168.21.132 09:49 0.00s 0.00s 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
3 0 0 206004 2108 197024 0 0 46 11 93 134 0 0 99 1 0
0 0 0 206020 2108 197040 0 0 0 0 74 105 0 0 100 0 0
0 0 0 206020 2108 197040 0 0 0 0 76 100 0 0 100 0 0
0 0 0 206020 2108 197040 0 0 0 9 87 126 0 0 100 0 0
0 0 0 206020 2108 197040 0 0 0 0 75 101 0 0 100 0 0
0 0 0 206020 2108 197040 0 0 0 98 82 115 0 1 99 0 0
0 0 0 206020 2108 197040 0 0 0 5 89 121 0 0 100 0 0
0 0 0 206020 2108 197040 0 0 0 0 75 108 0 0 100 0 0
0 0 0 206012 2108 197048 0 0 0 0 92 119 1 1 98 0 0
0 0 0 206012 2108 197048 0 0 0 0 88 118 0 0 100 0 0
#expect會有超時時間，大概10s左右
分發系統介紹、expect腳本遠程登錄、expect腳本遠程執行命令、expect腳本傳遞參數