1 、service sshd start

如果遇到如下错误：

​​Starting sshd: /var/empty/sshd must be owned by root and not group or world-writable.​​

权限问题，解决方案：

1. chown   -R   root.root    /var/empty/sshd  
2. chmod 744 /var/empty/sshd  
3. service sshd restart