Expect基础
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有个项目要迁移 新来一批机器 要做初始化 于是抽空练了一下expect 有可能有这个 警告 expect: spawn id exp4 not open 不过效果是没问题的
利用expect批量添加pubkey
多台添加pubkey
cat main #!/bin/bash for ip in `cat list` do #echo $ip ./addkey $ip done cat addkey #!/usr/local/bin/expect #define var set timeout 17 # #<==接受第一个参数,赋值host set host [lindex $argv 0] set password "evan==" #spawn 执行的命令在这里,这里用 添加 pub key 作为例子 spawn ssh-copy-id -i /home/evan/lx/ssh/opspub root@$host #spawn ssh-copy-id -i /home/evan/.ssh/id_rsa.pub root@$host #ssh-copy-id -i /home/evan/.ssh/id_rsa.pub [email protected] #expect 去掉交互,让他自动交互完成 expect { "*yes/no" { send "yes\r"; exp_continue} "*password:" { send "$password\r" } } #send "exit\r" expect eof cat list 192.168.7.4 192.168.7.46 ##上面用了copy-id 如果想用scp etc #!/usr/bin/expect set timeout 5 set hostno [lindex $argv 0] spawn scp ~/.ssh/id_dsa.pub impala$hostno:~/.ssh/pub_key expect "*password*" send "111111\r" spawn ssh impala$hostno "cat ~/.ssh/pub_key/ >> ~/.ssh/authorized_keys" expect "*password*" send "111111\r" spawn ssh impala$hostno "chmod 600 ~/.ssh/authorized_keys" expect "*password*" send "111111\r" expect eof (3)分析: set可以设置超时,或者设置一个变量的值 spawn是执行一个命令 expect等待一个匹配的输出流中的内容 send是匹配到之后向输入流写入的内容 [lindex $argv 0]表示脚本的第0个参数 expect eof表示读取到文件结束符
多台修改ssh安全(远程执行命令和退出)
cat run #!/usr/local/bin/expect #define var set timeout 17 set host [lindex $argv 0] set password "evan==" #spawn spawn ssh root@$host expect { "*#*" { send "sed -i 's/#PubkeyAuthentication yes/PubkeyAuthentication yes/g' /etc/ssh/sshd_config\r"; send "sed -i 's/^PasswordAuthentication yes/PasswordAuthentication no/g' /etc/ssh/sshd_config\r" send "systemctl restart sshd\r" #send "\r" } } send "exit\r" expect eof cat main #!/bin/bash for ip in `cat list` do #echo $ip #./addkey $ip ./run $ip done #run bash main
单个
vi addkey #!/usr/local/bin/expect #SERVERS="101.00.208.197 120.40.043.52 " set timeout 5 set host [lindex $argv 0] spawn ssh-copy-id -i /home/evan/.ssh/id_rsa.pub root@$host #ssh-copy-id -i /home/evan/.ssh/id_rsa.pub [email protected] expect { "*yes/no" { send "yes\r"; exp_continue} "*password:" { send "P2xMGipLpSG7dA==\r" } } expect eof 用法 ./addkey 18.80.216.19 #这是你的IP
on dovo
#!/usr/bin/expect #good on new kali 这个在新的kali 上是ok的 set timeout 30 set sshIP "4.88.1.2" set keypassword "ZdvV" set rootPassword "5D" #spawn ssh -o StrictHostKeyChecking=no -i /root/key evan@$sshIP expect "Enter passphrase" send "$keypassword\r" expect "]$" send "sudo -i\r" expect "xxxxx" send "$rootPassword\r" expect "]#" ## run command #send "cat /root/1 && echo 'test was ok .';exit\r" #send "bash /data/tmp/dbins && echo 'dbins was ok.';exit\r" #expect "52wan" #send "exit\r" #expect eof {exit 0} interact #!/usr/bin/expect # on old kali 这个在老的kali set timeout 30 set sshIP "4.88.1.2" set keypassword "Zd" set rootPassword "5D" spawn ssh -o StrictHostKeyChecking=no -i /home/key evan@$sshIP expect "Enter passphrase" send "$keypassword\r" expect "52wan" send "sudo -i\r" expect "password for 52wan:" send "$rootPassword\r" expect "]#" ## run command #send "cat /root/1 && echo 'test was ok .';exit\r" #send "bash /data/tmp/dbins && echo 'dbins was ok.';exit\r" #expect "52wan" #send "exit\r" #expect eof {exit 0} interact
sudo addkey
addkey #!/bin/bash #cat main evan 只能秀 sed 1a 不能和3a 会不成功 不能用 echo 会说没权限 #for ip in `cat li` for ip in `cat list` do ssh -i .key -o "StrictHostKeyChecking no" centos@$ip "sudo mkdir -p /root/.ssh" ssh -i .key -o "StrictHostKeyChecking no" centos@$ip "sudo sed -i '1a ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAdfasfBAQDTR3R8Bz2mj lx' /root/.ssh/authorized_keys" done
change hostname
cat hoso #!/bin/bash IP=( 18.138.827.24 13.271.85.64 ) HOSTNAME=( prod-jenkin1 prod--es1 ) for no in `seq 0 1 ` do #for ip in `cat list` #do #echo $ip #echo ${IP[$no]} #ssh -i evan -o "StrictHostKeyChecking no" root@${IP[$no]} " hostnamectl --static set-hostname ${HOSTNAME[$no]} " ssh -i evan -o "StrictHostKeyChecking no" root@${IP[$no]} " hostname" done