1.wget获取epel源
wget http://files.tttidc.com/centos6/epel-6.repo mv epel-6.repo /etc/yum.repos.d/
2.检查本地挂载情况，如果没挂载，须先挂载
挂载命令：mount /dev/sr0 /mnt #挂在路径根据你们自己本地的yum源来挂载
#清空缓存 yum clean all #创建缓存 yum makecache
3.下载sshpass软件包
yum -y install sshpass
4.创建密钥对文件
ssh-keygen -t dsa #指定dsa算法
5.免交互方式发放公钥
sshpass -p "123456" ssh-copy-id -i /root/.ssh/id_dsa.pub -o StrictHostKeyChecking=no root@192.168.10.91
6.测试免密登录
ssh 192.168.10.91
7.编写ssh密钥对免交户批量分发脚本
#!/bin/bash #author:lixiang #2021-09-13 #定义变量 user=root password=123456 function YumBuild(){ echo "正在安装epel源yum仓库..." cd /etc/yum.repos.d/ wget http://files.tttidc.com/centos6/epel-6.repo &>/dev/null yum clean all &>/dev/null yum makecache &>/dev/null } echo "测试主机ip是否能连接外网..." ping www.baidu.com -c 2 >/dev/null || (echo "无法连接外网，请检查本地网络环境" && exit) [ $# -eq 0 ] && echo "没有参数！格式为：sh $0 " && exit YumBuild if [ $? -gt 0 ];then echo "epel源构建失败..." && exit fi rpm -q sshpass &>/dev/null || yum -y install sshpass &>/dev/null || (echo "sshpass build error!" && exit) [ -d ~/.ssh ] || mkdir ~/.ssh chmod 700 ~/.ssh echo "正在创建密钥对..." ssh-keygen -t dsa -P "" -f ~/.ssh/id_dsa &>/dev/null for ip in $* do ping $ip -c 2 &>/dev/null if [ $? -gt 0 ];then echo "$ip无法ping通网络" continue fi sshpass -p "$password" ssh-copy-id -i ~/.ssh/id_dsa.pub -o StrictHostKeyChecking=no ${user}@$ip &>/dev/null echo "$ip 公钥分发成功" done
8.测试公钥发放
chmod u+x ssh.sh #赋予执行权限 ./ssh.sh 192.168.10.92 192.168.10.93 192.168.10.94 192.168.10.95 192.168.10.96
