In this post, I would continue to write about preparing for the CKS (Certified Kubernetes Security Specialist) exam. I would write my own notes about the exam, and you can refer to these articles to prepare your own.
List of the series of posts:
3. Remove obsolete packages and services from Linux Operating System
List system services
systemctl list-units —type service
View the status of a specific system service
systemctl status apache2
Stop service, disable service
systemctl stop apache2 systemctl disable apache2
Delete a package
apt remove apache2
In this post, I write some examples about how to do system service/packages hardening when using linux operating systems.