Scale up as you grow — whether you're running one virtual machine or ten thousand.

From GPU-powered inference and Kubernetes to managed databases and storage, get everything you need to build, scale, and deploy intelligent applications.

This textbox defaults to using Markdown to format your answer.
You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.
Hello,
Can you try the following:
netstat -plant command to check your ports, maybe there’s another service already listening on port 80 and that’s why apache is failing to startIf you wish you could provide me with your httpd error logs and the output of the netstat command so that I could advice further.
Regards, Bobby
Just an update, after I run all these command again (https://assets.nagios.com/downloads/nagioscore/docs/Nagios-Core-Installing-On-Centos7.pdf#_ga=2.175257890.1451548335.1562281975-513490159.1562281975) it started my nagios. I just don’t know how messy this is now :)
Will just need to learn how to user Nagios. Thanks.