How Amazon VPC CNI for k8s works

How do Kubernetes pods get an IP address in EKS?
@JustinGarrison explains how the VPC CNI uses Elastic Network Interfaces (ENI) to obtain an IP address and assign it to a pod in a cluster.
github.com/aws/amazon-vpc-cni...
00:00 - Intro
00:30 - What is a VPC?
1:24 - How big are CIDRs
2:10 - Scheduling a single pod
4:27 - Other node limits
4:45 - Prefix assignment
7:39 - IPv6
8:33 - Custom config
8:50 - Things to consider

[@SchuldinerGirl]

How come does this video only have 115 likes? Beautifully explained! Thank you!

[@joshreji7510]

Excellent video thankyou for taking the efforts for this

[@rodoherty1]

Brilliant explanation! Thank you!

[@balkon646]

Thank you so much, you make it seem so simple :)

[@user-jp8xs2ru9s]

nice video .. helps very much for clear understanding...

[@jeevanlearn]

this is insane... Thank you for this video.

[@rajeshantony74]

woh!! great explanation!!

[@lalitshukla6585]

best explaination ever 👍👍

[@MikhailPolitaev]

Awesome, best explanation of aws docs!!! Thanks a lot! How to donate you, man?

[@JuanixTV]

This was good. Thxs

[@iliyastrakovich]

brilliant !

[@emboss64]

We are in the middle of switching to custom networking, with a non routeable subnet for pods and routeable for nodes. Only concern is how would fargate deal with that, wasn't able to find docs explaining that bit...

[@neilteng1735]

Why do we need to reserve 1 ip for the node in the ENI? What do we need to do about ?

[@elabeddhahbi3301]

could you make a video how to install calico or/and cilium on eks

[@ContainersfromtheCouch]

The official AWS docs is the best place to get that info and make sure it’s up to date

[@sle6423]

This was wonderful. Is there a reason the default is the default? History? I feel like at work GKE defaults to the analogy of prefix mode?

[@ContainersfromtheCouch]

Prefix delegation wasn’t available in VPCs at launch and Individual IP assignment is more flexible because you don’t need continuous CIDR blocks available

[@elabeddhahbi3301]

justin is there any chance you make a series about Kubernetes troubleshooting

[@ContainersfromtheCouch]

What type of troubleshooting would you want? I have blogs about it in this series thenewstack.io/living-with-kubernetes-12-commands-to-debug-your-workloads/

[@elabeddhahbi3301]

@@ContainersfromtheCouch I believe that the series would be more valuable if it includes real-world scenarios that you have encountered, along with your approach to resolving them. Can you please provide some examples of the most common Kubernetes problems you have faced and how you tackled them,

[@ContainersfromtheCouch]

Good idea. I’ll think about it. In the mean time I recommend you check out @rawkode and Klustered videos