Hello,

I am pretty new to Linux and I am trying to build a Nagios Monitoring System using CentOS7 Minimal version.

I follow this instruction on building my Nagios (https://www.digitalocean.com/community/tutorials/how-to-install-nagios-4-and-monitor-your-servers-on-centos-7)

However, I cannot seem to start my nagios webpage. Below are some of the command that might help.

service httpd status

Redirecting to /bin/systemctl status httpd.service ● httpd.service - The Apache HTTP Server Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled; vendor preset: disabled) Active: inactive (dead) Docs: man:httpd(8) man:apachectl(8)

service nagios status

nagios (pid 3968) is running…

sudo apachectl configtest

AH00558: httpd: Could not reliably determine the server’s fully qualified domain name, using fe80::215:5dff:fe47:a10. Set the ‘ServerName’ directive globally to suppress this message Syntax OK

Would really appreciate any help.