Day 50 - Kubernetes Operators Tutorial ( explained with demo)

Welcome to Day 50 of the CKA 2025 series! In this video, we celebrate a milestone by diving into the world of Kubernetes Operators. We explore the difference between traditional manual deployment methods and the powerful, automated Operator pattern.

Learn how Operators work under the hood, understanding their key components like Custom Resource Definitions (CRDs), Custom Resources, and the Controller. Discover the significant benefits of using Operators, especially for automating complex Day-2 operations such as backups, restores, updates, and scaling.

We'll walk through a practical example using the popular cert-manager operator, demonstrating its installation using the Operator Lifecycle Manager (OLM) and how it automates TLS certificate management in your cluster. See how the operator watches for changes in Custom Resources (CRs) and reconciles the desired state with the actual state in your Kubernetes cluster.

What you'll learn in this video:
* Traditional vs. Operator deployment patterns in Kubernetes
* How the Kubernetes Operator reconciliation loop works
* Key components of a Kubernetes Operator (CRD, CR, Controller)
* Why Operators are crucial for automating Day-2 operations
* Hands-on demo: Installing and setting up the cert-manager operator

00:00 Introduction
00:27 Agenda overview
00:34 Traditional vs. Operator pattern explained
01:18 Manual deployment workflow
02:46 Automated (Operator) workflow
03:33 Operator as a DevOps engineer
04:40 How Operators work (diagram)
06:39 cert-manager Operator example (diagram)
09:05 Key Components of an Operator
09:53 Why use Operators (automate tasks, Day-2 operations)
10:36 Operator Installation methods (kubectl, Helm, OLM)
11:17 OperatorHub.io overview
12:23 Starting the demo of operator
20:49 Creating a self-signed Issuer CR
21:56 Creating a Certificate CR referencing the Issuer
24:00 Observing logs showing status change from False to True
24:46 Conclusion
25:19 Outro

Master the power of Kubernetes Operators to simplify application management and achieve true automation.

#kubernetes #operators #ckacertification #devops #cloudnative #automation

2025 Labs from KodeKloud: https://kode.wiki/4d24Q9Z
KodeKloud free playground: https://kode.wiki/4dRmXA1

👨‍💻 GitHub repo :
https://github.com/piyushsachdeva/CKA-2024/

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Видео Day 50 - Kubernetes Operators Tutorial ( explained with demo) канала Tech Tutorials with Piyush