Enable epel repository if needed
## RHEL/CentOS 7 64-Bit ##
rpm -ivh epel-release-latest-7.noarch.rpm
yum install atop -y
https://www.tecmint.com/how-to-install-atop-to-monitor-logging-activity-of-linux-system-processes/… Read the rest
You should never terminate atop by 'kill -9', because then it has no chance to stop process accounting; as a result the accounting file may consume a lot of disk space after a while!!!
Lets do this smoothly:
systemctl stop atopd
systemctl disable atopd
Check atop processes
ps auxfS |grep atop
Kill if any using 'kill -15'
kill -15 PID
Check for links and unlink if any:
ls /etc/systemd/system/ |grep atop
… Read the rest