UbuntuTips12:免密登录

1. 安装SSH

sudo apt-get install ssh

2. 查看ssh服务器是否安装并启动

sudo ps -e | grep ssh

3. 生成A机器的公钥

• 输入以下命令，一路回车

ssh-keygen -t rsa

• 将公钥发送给需要免密的机器上

# ssh-copy-id -i ~/.ssh/id_rsa.pub ‘用户名’@‘发送的机器的ip地址’
ssh-copy-id -i ~/.ssh/id_rsa.pub root@192.168.92.145
ssh-copy-id -i ~/.ssh/id_rsa.pub root@192.168.92.146
ssh-copy-id -i ~/.ssh/id_rsa.pub root@192.168.92.147


ssh-copy-id -i ~/.ssh/id_rsa.pub root@192.168.92.159
ssh-copy-id -i ~/.ssh/id_rsa.pub root@192.168.92.160
ssh-copy-id -i ~/.ssh/id_rsa.pub root@192.168.92.161

• 连接测试

ssh redis02

• 以上配置,只是实现了server1登录server2和server3的免密,逆向则不免密!!!

• 在机器上重复上述步骤即可

• 以上操作之后，需要重新启动三台服务器