配置 SSH

1)检查是否安装了ssh相关软件包(openssh-server + openssh-clients + openssh)

$yum list installed | grep ssh

2)检查是否启动了sshd进程

$>ps -Af | grep sshd

3)在client侧生成公私秘钥对。

$>ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa

4)生成~/.ssh文件夹，里面有id_rsa(私钥) + id_rsa.pub(公钥)

5)追加公钥到~/.ssh/authorized_keys文件中(文件名、位置固定)

$>cd ~/.ssh

$>cat id_rsa.pub >> authorized_keys

6)修改authorized_keys的权限为644.

$>chmod 644 authorized_keys

7)测试

$>ssh localhost