Book Image

The Linux DevOps Handbook

By : Damian Wojsław, Grzegorz Adamowicz
3.5 (2)
Book Image

The Linux DevOps Handbook

3.5 (2)
By: Damian Wojsław, Grzegorz Adamowicz

Overview of this book

The Linux DevOps Handbook is a comprehensive resource that caters to both novice and experienced professionals, ensuring a strong foundation in Linux. This book will help you understand how Linux serves as a cornerstone of DevOps, offering the flexibility, stability, and scalability essential for modern software development and operations. You’ll begin by covering Linux distributions, intermediate Linux concepts, and shell scripting to get to grips with automating tasks and streamlining workflows. You’ll then progress to mastering essential day-to-day tools for DevOps tasks. As you learn networking in Linux, you’ll be equipped with connection establishment and troubleshooting skills. You’ll also learn how to use Git for collaboration and efficient code management. The book guides you through Docker concepts for optimizing your DevOps workflows and moves on to advanced DevOps practices, such as monitoring, tracing, and distributed logging. You’ll work with Terraform and GitHub to implement continuous integration (CI)/continuous deployment (CD) pipelines and employ Atlantis for automated software delivery. Additionally, you’ll identify common DevOps pitfalls and strategies to avoid them. By the end of this book, you’ll have built a solid foundation in Linux fundamentals, practical tools, and advanced practices, all contributing to your enhanced Linux skills and successful DevOps implementation.
Table of Contents (20 chapters)
1
Part 1: Linux Basics
6
Part 2: Your Day-to-Day DevOps Tools
12
Part 3: DevOps Cloud Toolkit

Handling secrets

Protecting secrets such as passwords, tokens, and certificates is crucial in any IT infrastructure. These secrets are the keys to accessing sensitive information and services, and their exposure can lead to severe security breaches. Therefore, it is crucial to keep them safe and secure. Ansible provides several methods for managing secrets, such as Ansible Vault, which allows users to encrypt and decrypt sensitive data using a password or key file. This feature helps to protect secrets and ensures that only authorized users have access to them.

Saving secrets in a Git repository or any other public place is a significant security risk. Such repositories are often accessible to multiple users, some of whom may not have the necessary permissions to access sensitive data. Additionally, version control systems such as Git retain the history of changes made to files, making it possible for secrets to be exposed inadvertently. This could happen if a user inadvertently...