Can you explain what is meant by configuration drift in a system?

Configuration drift is a situation where the actual state of a system or its components begins to differ from the documented or desired configuration over time.

Causes of drift:

• Manually made changes without updating configuration files.
• Automatic updates, patches that are not reflected in the configuration management system.
• Errors in deployment or administration processes.

Consequences:

• Unpredictable system behavior.
• Security issues.
• Difficulties in maintenance and scaling.

To combat this, configuration management tools (such as Ansible, Puppet, Chef) are used, which regularly check and bring the system to the desired state, preventing drift.