expect批量分发公钥

sshkey.exp

#!/usr/bin/expect
# 由于是多台服务器，需要在shell脚本中循环调用该脚本

if { $argc != 2 } {
send_user "usage: expect scp-expect.exp file host dir "
exit
}

#定义变量
set file [lindex $argv 0]
set host [lindex $argv 1]
set password "888888"

#必须使用ssh-copy-id来分发公钥，本机的公钥追到目标服务器的 .ssh/authorized_keys 里
spawn ssh-copy-id -i $file "-p 22 root@$host"
expect {

#询问yes或no，都是用yes
"yes/no" {send "yes ";exp_continue}
"*password" {send "$password "}
}
expect eof

exit -onexit {
send_user "Kangjie say good bye to you! "
}

通过shell脚本来调用该文件

for ip in `cat iplist`
do

 expect fenfa_sshkey.exp /root/.ssh/id_dsa.pub $ip >/dev/null 2>&1

done

iplist文件中写入服务器的ip地址

分发完成后，通过: ssh 192.168.1.123  /sbin/ifconfig ifconfig eth0

如果没有提示就能显示服务器的ip，说明配置成功