Section 1
System Deployment
Preview
Preview: Operations Deployment
- 4 of 41 lesson topics
- 1 overview segment
- 3 core concepts
- 2 exam tips
Lesson Topics
- Runtime kernel parameters with sysctl
- Dynamic kernel behavior
- The /proc/sys kernel tunable tree
- Broad process listings with ps aux
Overview
The exam tests deploying and managing systems, a critical aspect of ensuring stability and reliability. You'll learn how to configure kernel behavior, manage processes, schedule tasks, and handle package updates – all essential for maintaining a functional environment.
Core Concepts
- **sysctl:** This command allows you to view and modify kernel parameters at runtime. Changes made with `sysctl` are typically not persistent across reboots unless saved to a configuration file.
- **/proc/sys:** This virtual filesystem exposes kernel parameters that can be modified using `sysctl`. It's the interface through which `sysctl` interacts with the kernel.
- **ps aux:** This command provides a comprehensive view of running processes, including those without a controlling terminal, which is crucial for identifying and managing system processes.
Exam Tips
- Carefully read the scenario and identify the specific problem being addressed before selecting an answer.
- Understand the difference between modifying kernel parameters at runtime versus making persistent changes.