批量实现SSH免密登录

#!/bin/bash

#批量实现SSH免密登录

 

#没有则安装expect

if  ! rpm -q expect > /dev/null

then

    echo "###expect 未安装，现在安装###"

    yum install -y expect &>/dev/null

    if [ $? -ne 0 ]

    then

        echo "###expect 安装失败###"

        exit 1

    fi

fi

 

#本机没有SSH密钥则生成

if [ ! -f ~/.ssh/id_rsa ]

then

    echo "###请按3次enter键###"

    ssh-keygen -t rsa

fi

 

ssh_expect () {

    expect -c "set timeout -1;

    spawn ssh-copy-id -f $1

 

    expect {

        "yes/no" { send -- yes\r;exp_continue;}

        "password:" { send -- $2\r;exp_continue;}

        eof

    }";

}

 

[ -f hosts.txt ] && rm -rf hosts.txt

 

#定义 hosts.txt

cat > hosts.txt << EOF

192.168.56.10

192.168.56.11

192.168.56.12

192.168.56.13

EOF

 

passwd=123456789

 

for ip in `cat hosts.txt |awk '{print $1}'`

do

    ssh_expect $ip $passwd

done