DevOps Roadmap 2024.

This is a step-by-step guide on how to become a DevOps engineer, with links to relevant learning resources.

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Disclaimer

The purpose of this roadmap is to give you an idea about the landscape. The road map will guide you if you are confused about what to learn next, rather than encouraging you to pick what is hype and trendy. You should grow some understanding of why one tool would be better suited for some cases than the other and remember that hype and trendy do not always mean best suited for the job.

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DevOps roadmap

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Learning resources for DevOps Engineers (mostly free)
Additional resources
- Tools
- Books

Learning resources for DevOps Engineers (mostly free)

1. GIT

All your resources (files) will be held in a GIT repository. Those files are application code but also infrastructure as a code.

Git is a free tool used for source code management. Git is used to tracking changes in the source code, enabling multiple developers to work together on non-linear development.

The two most popular Git platforms are GitLab and GitHub.

Here you need to learn Git commands, like git clone, branch, merge, and how to collaborate on a project with pull requests.

Resources:

2. Learn one programming language

As an engineer, it is recommended to know at least one programming language that you can use to write automation scripts.

Some popular programming languages for DevOps-es are Python, Go, and JavaScript.

Python is a multi-paradigm language. Being an interpreted language, code is executed as soon as it is written, and the syntax allows for writing code in different ways. Python is frequently recommended as the first language new coders should learn, because of its focus on readability, consistency, and ease of use.

Here you need to learn basic concepts of programming languages, such as syntax, if/else, loops, data structures, etc.

Resources:

Automate the Boring Stuff with Python book ^FREE
Python Crash Course ^FREE
The Modern JavaScript Tutorial ^FREE
JavaScript Crash Course For Beginners ^FREE
Eloquent JavaScript, 3rd edition, Marjin Haverbeke ^{FREE book}
Go by Example ^FREE

3. Learn Linux & Scripting

An Operating system serves as a bridge between a computer's user and its hardware. Its function is to offer a setting in which a user can conveniently and effectively run programs.

As most servers use Linux OS, you need to make yourself comfortable with Linux and its CLI.

One easy-to-start distribution is Ubuntu.

In addition, you need to know scripting to automate tasks for development and operations.

Here you can learn OS-specific languages, such as Bash or Powershell, or independent, like Python or Go.

Resources:

Operating System - Overview ^FREE
Shell Scripting Tutorial ^FREE
Powershell Tutorial for Beginners: Learn Powershell Scripting ^FREE
Bash Reference Manual ^FREE
Ultimate Guide: Getting Started With Ubuntu ^FREE
FreeBSD Handbook ^FREE
Linux command handbook ^FREE

4. Learn Networking & Security

A network protocol is an established set of rules that determine how data is transmitted between different devices in the same network. Essentially, it allows connected devices to communicate with each other, regardless of any differences in their internal processes, structure, or design.

Here you will need to know how a network works, how to configure firewalls, understand how DNS works, OSI model, IP addresses, ports, etc.

Resources:

OSI Model Explained ^FREE
Computer Networking: A Top-Down Approach ^book Video Content^video
TCP/IP and Networking Fundamentals for IT Pros ^{Pluralsight course}
DevSecOps : Master Securing CI/CD | DevOps Pipeline ^{Udemy course}
Hands-On Security in DevOps: Ensure continuous security, deployment, and delivery with DevSecOps ^Book
Securing DevOps: Security in the Cloud ^Book

5. Learn Server Management

Server management includes all the infrastructure monitoring and maintenance required for servers to operate reliably and at optimal performance levels. The primary goals of an effective server management strategy are to:

Minimize server slowdowns and downtime while maximizing reliability.
Build secure server environments.
Scale servers and related operations to meet the needs of the organization over time.

Here you will need to know what is forward and reverse proxies, caching servers, and how to operate Web Servers, such as Nginx, Apache, or IIS.

Resources:

What is a reverse proxy? ^FREE
Cache Server ^FREE
Reverse Proxy vs. Forward Proxy: The Differences ^FREE
What is load balancing? ^FREE
What is a Firewall? ^FREE
The NGINX Handbook ^FREE
Learn Apache Server ^FREE
Learn IIS ^FREE

6. Learn Containers

A container is a standard unit of software that packages up code and all its dependencies, so the application runs quickly and reliably from one computing environment to another.

Docker is by far the most popular container technology today. A Docker container image is a lightweight, standalone, executable package of software that includes everything needed to run an application: code, runtime, system tools, system libraries, and settings. Here you need to know how to run containers, Docker Networking, Volumes, Dockerfiles, and run multiple containers with Docker-Compose.

Resources:

What are Containers? ^FREE
Learning Containers From The Bottom Up ^FREE
Docker Tutorial for Beginners by TechWorld with Nana ^FREE
Docker Mastery: with Kubernetes +Swarm from a Docker Captain ^{Udemy course}
What is Service Mesh? ^FREE

7. Learn Container Orchestration

Container orchestration automates the deployment, management, scaling, and networking of containers.

Container orchestration can be used in any environment where you use containers. It can help you to deploy the same application across different environments without needing to redesign it. And microservices in containers make it easier to orchestrate services, including storage, networking, and security.

Here you need to learn how Kubernetes works, and how to administer the Kubernetes cluster and deploy applications on it.

Resources:

8. Learn Infrastructure as a code

Sometimes referred to as IaC, it refers to the techniques and tools used to define infrastructure, typically in a markup language like YAML or JSON. Infrastructure as code allows Engineers to automate environment setup and teardown. Accelerates and de-risks deployment by provisioning gold copy environments on demand.

Terraform is the most popular infrastructure provisioning tool, but there are others such as Ansible, Chef, Puppet, and Vagrant.

Here you need to know how to do infrastructure provisioning and configuration management.

Resources:

GUIs, CLI, APIs: Learn Basic Terms of Infrastructure-as-Code ^FREE
Official Terraform Tutorials ^FREE
A Comprehensive Guide to Terraform ^FREE
Automate Terraform documentation like a pro! ^FREE
Writing reusable Terraform modules ^FREE
What is Istio? ^FREE
Puppet overview ^FREE
Puppet Courses ^{FREE and PAID}
Getting Started With Ansible ^FREE
Learning Ansible Basics
Get started with Red Hat Ansible ^{FREE and PAID}
Mastering Ansible ^{Udemy Course}
Learn Chef ^FREE

9. Learn CI/CD

Continuous Integration / Continuous Deployment (CI/CD) is a method to frequently deliver apps to customers by introducing automation into the stages of app development. CI/CD is a solution to the problems integrating new code can cause for development and operations teams.

CI/CD introduces continuous automation and continuous monitoring throughout the lifecycle of apps, from integration and testing phases to delivery and deployment. These connected practices are often referred to as a "CI/CD pipeline" and are supported by development and operations teams.

There are different stages of a CI/CD pipeline, such as: build, test and deploy, but there could be much more activities included: