先查看該主機名稱

[root@localhost ~]# hostname

faqtest        #此台主機的名稱

修改主機名稱

[root@localhost ~]# hostname  blog.faq-book.com (新主機名)

修改後

[root@localhost ~]# hostname

blog.faq-book.com

修改network

[root@localhost ~]# vim /etc/sysconfig/network

修改前

NETWORKING=yes

NETWORKING_IPV6=yes

HOSTNAME= faqtest   

GATEWAY=192.168.1.1

修改後

NETWORKING=yes

NETWORKING_IPV6=yes

HOSTNAME= blog.faq-book.com    #修改為新主機名

GATEWAY=192.168.1.1

 [root@localhost ~]# vim /etc/ssh/sshd_config

 57 # To disable tunneled clear text passwords, change to no here!

 58 #PasswordAuthentication yes

 59 #PermitEmptyPasswords no

 60 PasswordAuthentication  no

#請把PasswordAuthentication  yes 改為no

[root@localhost ~]# service sshd restart

Stopping sshd:                                             [  OK  ]

Starting sshd:                                             [  OK  ]