Enable epel repository if needed
## RHEL/CentOS 7 64-Bit ## wget http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm rpm -ivh epel-release-latest-7.noarch.rpm
yum install atop -y
Useful URLs:
https://www.tecmint.com/how-to-enable-epel-repository-for-rhel-centos-6-5/
https://www.tecmint.com/how-to-install-atop-to-monitor-logging-activity-of-linux-system-processes/