解决apache的apr_sockaddr_info_get() failed错误

解决apache的apr_sockaddr_info_get() failed错误
似乎不影响服务的使用，但是也挺别扭的。
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[root@linux http]# service httpd restart
httpd: apr_sockaddr_info_get() failed for linux
httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for

ServerName
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/etc/sysconfig/network 默认主机名是：HOSTNAME=localhost.localdomain
/etc/hosts   二个配置文件主机名相同

原因是我删掉了网卡中的主机信息 ::1 localhost.localdomain   localhost
添加加去后：
cat /etc/hosts

::1 localhost.localdomain   localhost