Understanding Kubernetes Networking. Part 2: POD Network, CNI, and Flannel CNI Plug-in.

In this video, we will build on what we learned from the container networking presentation and will discuss an overview of the Kubernetes networking model and POD networking details. We will then explore Container Network Interface (CNI) and how it works. We will finish the presentation with a deep-dive exploration of the Flannel CNI plug-in.

Keywords: Kubernetes networking model, POD networking, Flannel, CNI, POD Network, Overlay Networks, Kubernetes CNI

My Other Videos:
►Cilium Kubernetes CNI Provider, Part 2: Security Policies and Observability Leveraging Hubble
► Cilium Kubernetes CNI Provider, Part 3: Cluster Mesh
► What is VXLAN and How It is Used as an Overlay Network in Kubernetes?
► Managing Linux Log-ins, Users, and Machines in Active Directory (AD): Part 2- Join Linux Machines to AD:
► Managing Linux Log-ins, Users, and Machines in Active Directory (AD): Part 1- Setup AD:
► Sharing Resources between Windows and Linux:
► Kubernetes kube-proxy Modes: iptables and ipvs, Deep Dive:
►Kubernetes: Configuration as Data: Environment Variables, ConfigMaps, and Secrets:
►Configuring and Managing Storage in Kubernetes:
► Istio Service Mesh – Securing Kubernetes Workloads:
► Istio Service Mesh – Intro
► Understanding Kubernetes Networking. Part 6: Calico Network Policies:
► Understanding Kubernetes Networking. Part 5: Intro to Kubernetes Network Policies:
► Understanding Kubernetes Networking. Part 4: Kubernetes Services:
► Understanding Kubernetes Networking Part 3: Calico Kubernetes CNI Provider in-depth:
► A Docker and Kubernetes tutorial for beginners:
► Setup a "Docker-less" Multi-node Kubernetes Cluster On Ubuntu Server:
► Detailed Windows Terminal, (WSL 2), Linux, Docker, and Kubernetes Install Guide on Windows 10:

[danielqian]

This is one of the best in-depth demo of how kubernetes networking works. Other youtubers talk in a high level way that I can understand perfectly each every sentence they say but don't know exactly where it fits in my knowledge accumulated over nearly two decades of networking and system working experience

I was wondering how two different subnets talk to each over VxLAN and from your video it looks like they do by source natting the original pod IP to that of the flannel tunnel IP

[atulmahori]

I must say that this playlist is the best on Kubernetes networking, starting with the lowest layer till the highest layer.

[touseefyousuf]

Hats off to you for such an insightful content delivered in this k8s networking series, stating this from the background that I have used k8s for at least 5years now. I will already make you CTO of my company if I had one😊

[TheHolycrack]

This is the kind of content I want to see every time I'm doing a deep dive into something and want to improve my understanding! Thank you!

[rafazmyslony]

Really, it's the best kubernetes networking explanation on entire internet. Believe me, I've seen many, even in diffrent languages:D

[carlossanchez]

Thank you so much so doing these series! This is the best K8s networking explanation I have found while trying to learn about this topic!

[adeshkashyap]

Being K8S Admin guy .. here I found the best on K8S networking .. Liking your videos too much .. Thanks for this great work

[kalekale]

man this is an amazing tutorial. As a networking pro, l liked every bit of presentation. Thanks for sharing this awesome lesson.

[rsrini]

No where seen this kind of detailed explanations with diagrams. Bow to you. Thanks a lot.

[jassspecial]

This is really impressive. Pretty much explained in details. I'll now watch more videos! keep posting more like this!

[stephenplautz]

This video has been super helpful for configuring my cni on my personal cluster project, and also just for understanding networking more in general. Great job!

[tracylee]

Hi There, it is me again, I just gave up that issue in previous video, and move forward here to keep my learning. I believe there is no big problem so thank you .

[ahmedsaid-sw]

Super, this is by far the best explaination, keep it up.

[rebelmoon-aj]

Of all the videos on K8 in youtube, this one stands out.

[jaxxfun]

Love this tutorial very much for it's detailed enough so that I could focus on the video without switching out to search additional information. Thank u very much. With your talk, I feel like the networking is not mystery any longer and everything under the cover has its footprint.

[rakibhossain]

best explanation. Thanks for making such kind of contents

[AnujKumar-yygk]

Excellent video. Great explanation. This is the video I was looking for.

[carlche]

This is really grate demo of k8s network in-depth.

[grjesus]

When you show interfaces attached to the bridge where is 10.244.1.1?? As in the diagram it should be mentioned, yet it is not. I think it is because bridge creates a local network for pods within the node. To access the internet and pods in other nodes kubernetes services are required.

[santosharakere]

Amazing demo and details. Thank you very much.