完整FQDN設定

啟動 httpd 服務時，若出現以下訊息，表示主機的 FQDN（Fully Qualified Domain Name）沒有完整設定。
# service httpd start
　Starting httpd: httpd: apr_sockaddr_info_get() failed for mailserver131.example.com
　httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName
                                                           [  OK  ]
檢查主機名稱 # hostname
　mailserver131.example.com
# hostname -a
　hostname: Unknown host
# hostname -i
　hostname: Unknown host
# hostname -d
　hostname: Unknown host
# hostname -s
　mailserver131
# hostname -f
　hostname: Unknown host

修改 『/etc/hosts』 及 『/etc/sysconfig/network』 等兩個設定檔 # vim /etc/hosts
　10.10.10.128 mailserver131.example.com mailserver131
# vim /etc/sysconfig/network
　HOSTNAME=mailserver131.example.com
# service httpd restart