SSH使用ssh-keygen远程登录主机免输入密码
SSH使用ssh-keygen远程登录主机免输入密码
SSH使用ssh-keygen远程登录主机免输入密码
环境:
本地主机名:ha01
eth0: 192.168.1.100 //对外IP地址
www.2cto.com
远程主机名:ha02
eth0: 192.168.1.200 //对外IP地址
本地主机ha01配置:
[root@ha01 /]# cd /etc/ssh
[root@ha01 ssh]# ssh-keygen -t rsa -N "" (该步骤生成key公私密钥对,-N ""表示密钥对短语为空)
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
82:2c:74:43:8e:16:f4:ef:ac:91:0f:d7:6f:a6:f3:59 root@ha01
复制公共密钥到远程主机: www.2cto.com
若ha02服务器上/root/.ssh/authorized_keys文件不存在
[root@ha01 ssh]# scp /root/.ssh/id_rsa.pub root@192.168.1.200:/root/.ssh/authorized_keys
若authorized_keys文件存在
ha01上执行:
[root@ha01 ssh]# scp /root/.ssh/id_rsa.pub root@192.168.1.200:/root/.ssh/
ha02上执行:
[root@ha02 /]# cat /root/.ssh/id_rsa.pub >> /root/.ssh/authorized_keys
SSH登录测试:
[root@ha01 ssh]# ssh ha02
Last login: Fri Apr 8 10:41:28 2011 from ha01
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