无密钥登录的自动脚本实现（ssh-copy-id、expect免交互输入脚本）

无密钥登录的自动脚本实现：
vim auto_ssh.sh

#!/usr/bin/expect
set timeout 10
set username [lindex $argv 0]
set password [lindex $argv 1]
set hostname [lindex $argv 2]
spawn ssh-copy-id -i /root/.ssh/id_rsa.pub $username@$hostname
expect {
#first connect, no public key in ~/.ssh/known_hosts
"Are you sure you want to continue connecting (yes/no)?" {
send "yes\r"
expect "password:"
send "$password\r"
}
#already has public key in ~/.ssh/known_hosts
"password:" {
send "$password\r"
}
"Now try logging into the machine" {
#it has authorized, do nothing!
}
}
expect eof

chmod 777 auto_ssh.sh
然后执行下述命令即可。
./auto_ssh.sh root 123456 192.168.10.162

试验结果：









162机器上传看：






成功！

# cat ip.txt
192.168.191.166
192.168.191.167
192.168.191.168
192.168.191.169

# cat ip-pass.txt
192.168.191.166 password1
192.168.191.167 password2
192.168.191.168 password3
192.168.191.169 password4

删除历史访问秘钥信息，以免有变：
for i in `cat ip.txt`;do sed -i '/'$i'/d' ~/.ssh/known_hosts;done
批量添加互信服务器：

while read IP PASS;do ./auto_ssh.sh root $PASS $IP;done < ip-pass.txt