分發系統-expect講解，expect腳本遠程登錄，expect腳本遠程執行命令，expect腳本
阿新 • • 發佈：2018-07-23
ssh 傳遞 memory stat 講解 mod 同步 print 業務 分發系統-expect講解
- 業務越來越大，網站app，後端，編程語言是php，所以就需要配置lamp或者lnmp，最好還需要吧代碼上傳到服務器上；但是因為業務增加，代碼增加，多臺機器，就會非常麻煩；這是只需要一個分發系統，就可以把每次更新的代碼發布到需要更新的服務器上
- expect，是一種腳本語言；通過他可以實現傳代碼上線，也可以登錄機器輸入命令
- 首先要準備一臺模板機器，機器的IP，對應用戶的密碼，通過rsync同步代碼，還可以通過expect去執行某些命令
expect腳本遠程登錄
- yum install -y expect
- 自動遠程登錄
[root@akuilinux01 sbin]# vim 1.expect [root@akuilinux01 sbin]# vim 1.expect #! /usr/bin/expect set host "192.168.21.129" set passwd "s5381561" spawn ssh root@$host expect { "yes/no" { send "yes\r"; exp_continue} "password:" { send "$passwd\r" } } interact [root@akuilinux01 sbin]# chmod a+x 1.expect root@akuilinux01 sbin]# ./1.expect spawn ssh [email protected] The authenticity of host ‘192.168.21.129 (192.168.21.129)‘ can‘t be established. ECDSA key fingerprint is SHA256:r2y+hZVvvomXE4d3uRSM0cO+kMdqyWAOMqpTtA2qp6I. ECDSA key fingerprint is MD5:ee:da:3b:ea:27:56:38:82:bc:e8:73:10:18:a0:c2:bd. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added ‘192.168.21.129‘ (ECDSA) to the list of known hosts. [email protected]‘s password: Last login: Wed Jul 11 21:59:23 2018 from 192.168.21.1 [root@akuilinux02 ~]# - 在expect 定義變量，用set
- 這個文件是就保證登錄信息的，清空的話，重新遠程登錄ssh 會有提示 /root/.ssh/known_hosts
exp_continue 表示繼續 \r 表示換行 interact 繼續停留在這臺機器，不退出expect腳本遠程執行命令
- 遠程登錄後，執行命令並退出
[root@akuilinux01 sbin]# vim 2.expect #!/usr/bin/expect set user "root" set passwd "s5381561" 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@akuilinux01 sbin]# chmod a+x 2.expect [root@akuilinux01 sbin]# ./2.expect spawn ssh [email protected] [email protected]‘s password: Last login: Sun Jul 22 22:07:20 2018 from 192.168.21.128 [root@akuilinux02 ~]# touch /tmp/12.txt [root@akuilinux02 ~]# echo 1212 > /tmp/12.txt [root@akuilinux02 ~]# [root@akuilinux01 sbin]# [root@akuilinux02 ~]# ls /tmp/ 12.txt mysql.sock systemd-private-12cfefcc2aaa4137b4ea969d11fbf699-chronyd.service-5DHBEF systemd-private-12cfefcc2aaa4137b4ea969d11fbf699-vgauthd.service-sG39NN systemd-private-12cfefcc2aaa4137b4ea969d11fbf699-vmtoolsd.service-CVypi4 [root@akuilinux02 ~]# cat /tmp/12.txt 1212 - expect "]*" ： “” 通配]右邊所有字符
- send 執行命令
expect腳本傳遞參數
- 傳遞參數
[root@akuilinux01 sbin]# vim 3.expect #!/usr/bin/expect set user [lindex $argv 0] #第一個參數賦值給user set host [lindex $argv 1] #第二個參數 set passwd "s5381561" set cm [lindex $argv 2] #第三個參數 spawn ssh $user@$host expect { "yes/no" { send "yes\r"} "password:" { send "$passwd\r" } } expect "]*" send "$cm\r" expect "]*" send "exit\r" [root@akuilinux01 sbin]# chmod a+x 3.expect [root@akuilinux01 sbin]# ./3.expect root 192.168.21.129 ls spawn ssh [email protected] [email protected]‘s password: Last login: Sun Jul 22 22:14:12 2018 from 192.168.21.1 [root@akuilinux02 ~]# ls 111 anaconda-ks.cfg [root@akuilinux02 ~]# [root@akuilinux01 sbin]# [root@akuilinux02 ~]# [root@akuilinux01 sbin]# ./3.expect root 192.168.21.129 "ls;w;vmstat 1" spawn ssh [email protected] [email protected]‘s password: Last login: Sun Jul 22 22:19:35 2018 from 192.168.21.128 [root@akuilinux02 ~]# ls;w;vmstat 1 111 anaconda-ks.cfg 22:19:51 up 41 min, 2 users, load average: 0.00, 0.02, 0.05 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT root pts/0 192.168.21.1 22:14 55.00s 0.01s 0.01s -bash root pts/1 192.168.21.128 22:19 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 1142532 2076 173112 0 0 15 14 51 44 0 0 99 0 0 0 0 0 1142780 2076 173208 0 0 0 6 257 149 0 0 100 0 0 0 0 0 1142780 2076 173208 0 0 0 294 188 181 0 0 100 0 0 0 0 0 1142780 2076 173208 0 0 0 0 122 112 0 0 100 0 0 0 0 0 1142780 2076 173208 0 0 0 0 116 105 0 0 100 0 0 0 0 0 1142780 2076 173208 0 0 0 0 107 99 0 0 100 0 0 0 0 0 1142780 2076 173208 0 0 0 0 160 136 0 0 100 0 0 0 0 0 1142780 2076 173208 0 0 0 5 124 119 0 0 100 0 0 0 0 0 1142780 2076 173208 0 0 0 168 157 157 0 0 100 0 0 0 0 0 1142780 2076 173208 0 0 0 0 102 99 0 0 100 0 0 0 0 0 1142780 2076 173208 0 0 0 0 119 113 0 0 100 0 0 [root@akuilinux01 sbin]# - 支持多條參數運行，vmstat 1命令10秒後自動退出
分發系統-expect講解，expect腳本遠程登錄，expect腳本遠程執行命令，expect腳本