Apache Httpd 安装 AH00558错误

[root@vps-f2a02f66 vhosts]# systemctl status httpd.service
● httpd.service - The Apache HTTP Server
   Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled; vendor preset: disabled)
  Drop-In: /usr/lib/systemd/system/httpd.service.d
       └─php-fpm.conf
   Active: failed (Result: exit-code) since Sun 2020-05-24 16:56:11 UTC; 12min ago
 Docs: man:httpd.service(8)
  Process: 17168 ExecStart=/usr/sbin/httpd $OPTIONS -DFOREGROUND (code=exited, status=1/FAILURE)
 Main PID: 17168 (code=exited, status=1/FAILURE)
   Status: "Reading configuration..."
  CPU: 44ms
May 24 16:56:11 vps-f2a02f66.vps.ovh.ca systemd[1]: Starting The Apache HTTP Server...

May 24 16:56:11 vps-f2a02f66.vps.ovh.ca httpd[17168]: AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using vps-f2a02f66.vps.ovh.ca. Set the 'ServerName' directive globally to suppress this >

May 24 16:56:11 vps-f2a02f66.vps.ovh.ca systemd[1]: httpd.service: Main process exited, code=exited, status=1/FAILURE

May 24 16:56:11 vps-f2a02f66.vps.ovh.ca systemd[1]: httpd.service: Failed with result 'exit-code'.

May 24 16:56:11 vps-f2a02f66.vps.ovh.ca systemd[1]: Failed to start The Apache HTTP Server.