Writing Validating Webhook Controller From Scratch - 1 | Validating Webhook Kubernetes

In this video we wrote the https server that would work as validating webhook controller and deployed it on Kubernetes cluster to make sure that the server is being called/requested when a Kluster resource is created.
We also looked into how we can give the .crt and .key files to the server as flags that would be mounted on the application as secrets.
GitHub:
github.com/viveksinghggits/va...
Relevant Playlists:
Creating Kluster Operator from scratch: • Generating ClientSet/I...
What are admission controllers: • Admission Controllers ...
Web:
viveksingh.dev/
00:00 Introduction
00:22 Agenda
01:06 What are Validating Webhook Controllers
02:56 What are we going to build/Discuss the problem
10:28 Components of validating Webhook controller
12:55 HTTPS is must in Webhook server
16:10 Set up of Webhook Server on Kubernetes
18:00 Writing HTTPS Webhook Server
47:15 Building the Webhook Server and checking -help
48:01 Containerise the application
49:06 Running Webhook server locally to see it uses self signed Certs
50:54 Creating deployment manifest for Webhook server
51:51 Creating the certificate files and secret manifest
54:45 Changing deployment manifest to have secret as volume
56:43 Adding argument for our server in deployment manifest
59:17 Create the Webhook server deployment
01:00:04 Create Service to expose webhook server deployment
01:03:08 Adding ValidatingWebhookConfiguration resource
01:05:57 Testing Validating Webhook Controller
01:08:51 Summarising codebase
01:10:21 Agenda from next video
01:11:11 Summarising the Webhook Server
01:13:56 Share, Like and Subscribe

[@golangNinja29]

This channel is underrated. Brother your content is really too good !!!! The way you explain is awesome

[@viveksinghggits]

Thank you Atharva, I am glad you liked them.

[@zhaoqi7670]

Thanks Vivek, it's very helpful !

[@viveksinghggits]

Thank you. I am glad it was helpful.

[@shakilmakram6923]

this is wonderful, im having so many ideas after watching this.

[@viveksinghggits]

Thank you 😊

[@manjunathn6539]

Thanks Vivek so kindful :), I was searching for something like these contents to get into intermediate/advanced K8s skills ..believe me , you wont find like these contents in any platform

[@viveksinghggits]

Thank you for the kind words 🙏 Manjunath. I really appreciate it. Thanks for watching.

[@sanderaerts1178]

Cant wait for part 2 U are my bro

[@viveksinghggits]

Thank you Sander. I appreciate the comment.

[@venkyy4895]

very helpful full video. thanks, Vivek. subscribed to your channel after watching this video.

[@viveksinghggits]

Thank you Venky for watching.

[@jeonglee8555]

Thanks for the helpful video. I've been looking into the webhook and K8s operator. It seems kubebuilder disables the webhook by default. Then it seems K8s operator's reconcile loop is still invoked while webhook is disabled. Can you please explain what is the role (add-on) of webhook to K8s operator? How does K8s operator reconcile loop is invoked in general (w/o the webhook)? I like to avoid the webhook and cert-manager if it's possible.

[@viveksinghggits]

Hi Jeong, I would recommend watching the videos that I have made on the topic Kubernetes operator and webhooks. I think that would be really helpful. Let me know if you have questions even after that.

[@pankajdahiya7137]

Hi sir, want to have a small tech discussion related to GoLang for the helm client. Can it be earlier than 22nd January?

[@viveksinghggits]

Hi Pankaj, It cant happen sooner than 22nd, sorry about that.

[@andersonbhat6885]

Hi Vivek, could you maybe create a video where you contribute or fix some bug live to any CNCF open source project like Kubernetes maybe , would love that . These videos are really great !

[@viveksinghggits]

Hi Anderson, Thank you. I do have a plan to make videos about open source contributions but don't have a timeline yet. Let's see when I can make them.

[@andersonbhat6885]

@@viveksinghggits thanks Vivek ,keep up the good work . Btw I am an open source enthusiast and a member of few python based projects like numpy, sympy and networkx . Though being new to the CNCF ecosystem i have been struggling these days to get going with any significant open source contributions! I get along nicely with the python stuff but as of now I am trying to have some patience and get myself accustomed to working with some CNCF stuff

[@andersonbhat6885]

Currently it feels tough but I don't want to give up soon ! I hope i make progress

[@farukabdullah2607]

is this video for developer or ops guy

[@viveksinghggits]

I didn't make this video keeping the role in mind but that's a good question. There are chances that it would not make a lot of sense to someone who isn't coding on day to day basis. So I would say it's more focused towards developers.

[@viveksinghggits]

Or, if the operations people want to understand what's happening behind the scene they can also learn things from here.

[@shakilmakram6923]

it can be used by ops person if they want to make their life easy and understand the fundamental of how things are being written/created in k8s