CentOS Apache Commands

Uninstall Apache
sudo yum erase httpd httpd-tools apr apr-util
Install Apache
sudo yum install httpd
Start Apache Service
sudo systemctl start httpd.service
Start Apache At Boot
sudo systemctl enable httpd.service

https://www.digitalocean.com/community/tutorials/how-to-move-an-apache-web-root-to-a-new-location-on-ubuntu-16-04
https://askubuntu.com/questions/337874/change-apache-document-root-folder-to-secondary-hard-drive