在客户端的操作：
#cd .ssh 进入.ssh目录
#ssh-keygen -t rsa 执行创建密钥对命令
Generating public/private rsa key pair.
Please be patient.... Key generation may take a few minutes
Enter file in which to save the key (/home/ap/appnms/.ssh/id_rsa):
# 按回车保存为: //.ssh/id_rsa,即当前用户的私钥
Enter passphrase (empty for no passphrase):
# 按回车,表示读取密钥时不需要密钥的密码
Enter same passphrase again:
# 确认密钥的密码,必须和上面的输入相同
Your identification has been saved in /home/ap/appnms/.ssh/id_rsa.
# 私钥保存信息
Your public key has been saved in /home/ap/appnms/.ssh/id_rsa.pub.
# 公钥保存信息
The key fingerprint is:
31:03:78:64:4f:8e:9d:a9:31:bf:38:5d:1a:79:08:e6 appnms@T254N0V4
# 密钥指纹
The key's randomart image is:
+--[ RSA 2048]----+
| o+ . |
| ...B o |
| .* X |
| o * * |
| E S o |
| o * |
| o + |
| . |
| |
+-----------------+
在服务端的操作：
把.ssh目录下的公钥文件：/当前用户home目录/.ssh/id_rsa.pub文件传输到服务器上。
如果有多个客户端，依次将客户端公钥附加到服务器的authorized_keys文件内即可。
# cat /tmp/id_rsa.pub >> authorized_keys