Build Your Own Kubernetes Operators with Go and Kubebuilder – Full Course

In this hands-on Kubernetes Operator course, you will study really to widen Kubernetes by building your ain civilization operators and controllers from scratch. You’ll spell beyond simply utilizing Kubernetes and commencement treating it arsenic a Software Development Kit (SDK). You will study really to build a real-world usability that manages AWS EC2 instances straight from Kubernetes, covering everything from the soul architecture of Informers and Caches to precocious concepts for illustration Finalizers and Idempotency. 💻 Code & Resources: https://github.com/shkatara/kubernetes-ec2-operator Shubham: https://www.linkedin.com/in/shubhamkatara/ Saiyam: https://www.linkedin.com/in/saiyampathak Kubesimplify: https://www.youtube.com/@kubesimplify Course Curriculum & Timestamps Part 1: The Theory of Controllers - 0:00:00 Introduction & Prerequisites - 0:01:55 What is simply a Controller? (The Observe-Compare-Act Loop) - 0:06:45 Idempotency successful Controllers - 0:07:55 Deep Dive: The Reconcile Loop (Happy Path, Sad Path, & Error Handling) - 0:19:45 The Foundation of Writing Operators - 0:23:05 What is an Operator? (The "Helper" Analogy) - 0:27:35 CRDs (Custom Resource Definitions) and CRs (Custom Resources) Part 2: Kubernetes Extensibility - 0:31:35 Kubernetes arsenic an SDK & Extensibility - 0:34:00 Networking, Storage, & Admission Controllers - 0:35:20 Internal Developer Platforms (IDP) & Platform Engineering - 0:39:50 Bootstrapping pinch Kubebuilder Part 3: Setting Up the Environment - 0:41:05 Setting up the Local Environment (K3D, Docker) - 0:52:15 Introduction to the Kubebuilder Framework - 0:56:35 Project Initialization (kubebuilder init) - 1:00:30 Exploring Scaffolding (Makefiles, Dockerfiles, main.go) Part 4: Building the API & Logic - 1:04:15 Creating your first API (kubebuilder create api) - 1:06:45 Defining EC2 Instance Types & Specs successful Go - 1:13:05 Understanding TypeMeta and ObjectMeta - 1:21:45 Internal Controller Logic Breakdown - 1:24:05 Deep Dive: Manager Architecture & Controller-Runtime - 1:31:05 Cert Watchers, Health Checks, & Prometheus Metrics - 1:52:55 Initializing the Manager successful main.go Part 5: Hands-on Development - 2:07:35 Implementing the Reconcile Loop Logic - 2:22:35 Custom Resource Definitions (CRDs) successful Action - 2:46:45 Running the Operator Locally - 3:01:45 AWS SDK Integration successful Go - 3:22:55 Using Finalizers for Cleanup Logic - 3:36:55 Creating EC2 Instances connected AWS via the Operator - 3:53:20 Implementing Waiters for Instance State (Running/Terminated) Part 6: Advanced Internals & Deployment - 4:13:45 Idempotency & Reconciler Loop Internals - 4:46:35 How Informers, Caches, and WorkQueues Work - 5:11:20 Handling Object Deletion & Timestamps - 5:32:05 Packaging the Operator pinch Helm - 5:43:05 Deploying to Kubernetes (RBAC & Service Accounts) - 6:16:20 Conclusion & Future Steps