ssh 互通脚本

实现了 主机到指定机器的ssh免密码登录。 若要实现互通， 则在机器列表的每台机器上执行该脚本。

192.168.1.22 root test
192.168.1.25 root test
192.168.1.26 root test

info.list 如上结构。

脚本使用expect命令，需要安装expect包，centos下使用 yum instal expect

#!/usr/bin/expect
set info [open "info.list" r]
set ips [list]
while {[gets $info line] != -1} {
    #scan $line "%s %s %s" ip user pass
    lappend ips $line
}
puts $ips
close $info

#轮询调用ssh-keygen
foreach line $ips {

    scan $line "%s %s %s" ip user pass
    puts $ip

    #移到循环外面
    spawn  ssh-keygen -t rsa  &>/dev/null 

    spawn  ssh-copy-id -i /root/.ssh/id_rsa.pub $user@$ip 
    #输入登录密码
    expect {
        "(yes/no)?" {
            send "yes\r"
        expect "password:" {
            send "$pass\r"
            expect "*denied*"{puts "wrong pass"; exit 2}
                }
            }
        "password:" {
            send "$pass\r"
            expect "*denied*" {puts "wrong pass"; exit 2}
        }
    }
}