Starting httpd: AH00557: httpd: apr_sockaddr_info_get() failed for {hostname}

$ sudo service httpd start
Starting httpd: AH00557: httpd: apr_sockaddr_info_get() failed for {hostname}
AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1. Set the 'ServerName' directive globally to suppress this message

vi /etc/sysconfig/network のHOSTNAMEを /etc/hosts127.0.0.1 へ追加して解決。