rajhotagit19 / learn-kubernetes

A roadmap to learn Kubernetes from scratch (Beginner to Advanced level)

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Kubernetes Learning Roadmap

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1.Prerequisites

• Learn Container concepts & Gets Hands on with Docker ^{Complete Guide}
• Understand Distributed system ^Blog
• Understand Authentication & Authorization ^Blog
• Learn Basics of Key Value Store^Blog
• Learn the basics of REST API^Blog
• Learn YAML^Blog
• Understand Service Discovery ^Blog
• Learn Netwoking Basics
  • L4 & L7 Layers (OSI Layers)^Blog
  • SSL/TLS^Blog
  • Network Proxy Basics^Blog
  • DNS^Blog
  • IPTables^Video
  • Software Defined Networking (SDN)^Blog

2.Learn Kubernetes Architecture

The Following image shows the high level kubernetes architecture and how external services connect to the cluster.

Refer the follwing documents to learn the Kubernetes Architecture.

• Kubernetes Architecture Explained ^Blog

3.Learn to Setup Kuberntes Cluster

There are many ways to set up a Kubernetes cluster. The following are the recommended ones.

• Kubernetes the Hard Way^Github
• Kubeadm Cluster Setup^Blog
• Minikube Development Cluster ^Blog
• Kind Development Cluster^{Official Documentation}
• Vagrant Automated Cluster^Github

Also, you can use the free cloud credits and set up managed Kubernetes clusters.

• GKE -Google Cloud $300 free credits^Website
• EKS - AWS $300 free POC credits^Website
• DO Kubernetes - Digital Ocean – $200 free credits^Website
• Linode Kubernetes Engine - Linode Cloud – $100 Free credits^Website

4.Understand KubeConfig File

As a DevOps engineer, it is important to become familiar with the Kubeconfig file. It is crucial for tasks such as setting up cluster authentication for CI/CD systems, providing cluster access to developers, and more.

A Kubeconfig file is a YAML file that stores information and credentials for connecting to a Kubernetes cluster. It is used by command-line tools such as kubectl and other client libraries to authenticate with the cluster and interact with its resources.

The Kubeconfig file can be used to store information for multiple clusters and users, allowing users to switch between different clusters and contexts easily. It is an important tool for managing access to and interacting with Kubernetes clusters.

Refer the follwing document to learn about Kubeconfig File in detail.

• Kubeconfig File Explained With Practical Examples ^Blog

5.Understand Kubernetes Objects And Resources

In Kubernetes, an object is a persisted entity in the cluster that represents a desired state of the system. It is created and managed by the Kubernetes API server, and is stored in the etcd key-value store. Examples of Kubernetes objects include pods, services, and deployments.

A resource is a representation of a Kubernetes object that is exposed by the Kubernetes API. It is a way for clients to interact with and manipulate objects in the cluster. Resources are typically accessed through the Kubernetes API using HTTP verbs such as GET, POST, and DELETE.

6.Learn About Pod & Associated Resources

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7.Learn About Pod Dependent Objects

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8.Deploy End to End Application on Kubernetes

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9.Learn About Securing Kubernetes Cluster

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10.Learn About Kubernetes Operator Pattern

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11.Learn Important Kubernetes Configurations

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12.Learn Kubernetes Best Practices

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13.Learn Kubernetes Logging & Monitoring

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14.Learn Kubernetes Production Best Practices

• Production Readiness Checklist
• Learn About 12 Factor Apps ^{Official Guide}
• Learn From Kubernetes Failure Stories ^{List of Blogs}
• Scheduling 300,000 Kubernetes Pods in Production Daily ^Video

15.Real-World Kubernetes Use Cases

If you do not have real world Kubernetes experience, it is better to read case studies of other companies using kubernetes.

• List of Kubernetes User Case Studies

16.Learn Kubernetes Templating Tools

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16.Kubernetes Deployment Tools (GitOps Based)

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