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ssh(ssh-keygen)配置免输入密码登录远程主机的方法
环境：
远程主机：ha02
本地主机ha01配置：
复制代码代码如下:
[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（原始方法）：
复制代码代码如下:
[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
复制代码代码如下:
[root@ha01 ssh]# scp /root/.ssh/id_rsa.pub root@192.168.1.200:/root/.ssh/
ha02上执行：
复制代码代码如下:
[root@ha02 /]# cat /root/.ssh/id_rsa.pub >> /root/.ssh/authorized_keys
复制公共密钥到远程主机（新方法）：
ha01上执行：
复制代码代码如下:
[root@ha01 ssh]# ssh-copy-id -i ~/.ssh/id_rsa.pub root@192.168.1.200
SSH登录测试：
复制代码代码如下:
[root@ha01 ssh]# ssh ha02
(责任编辑：IT)Last login: Fri Apr 8 10:41:28 2011 from ha01 |