What is Aggregated API Server | Difference between Aggregated API Server and CRDs

In this video we looked into two ways to extend the API server, CRDs and Aggregated API server. We looked into the differences between CRDs and Aggregated API server and in which case we would want to use Aggregated API server to extend the API Server.

Video about CRD:
Video about RBAC:

Web:

Github Links For GroupPriorityMinimum and VersionPriority:

00:00 Introduction
00:25 Agenda
00:35 Ways to extend K8S API Server, what is Agg API Server
02:53 Difference between CRDs and Agg API Server
12:08 When to use Agg API server instead of CRDs
13:40 How request is handled/forwarded by main API Server
20:35 Registering Agg API using APIService object
23:30 GroupPriorityMinimum and VersionPriority
28:00 Showing versionPriority in use
30:16 Internal of Agg API Server (AuthN and AuthZ in AggAPI server)
44:00 Cache that Agg API Server has for SAR
44:43 Like, Share and Subscribe

[farzadmf]

Very nice video and detailed explanation, thank you!

I have no idea how someone and know this much about the internals of k8s! 🙂 Great job

[shamstabrez]

hmmm nyc and very very imprtnt topics most of the people almost evryone dont teach a deep content like this really appreciated n keep doing ur good work

[johnhamskeie]

thank u for share this great viedo! it really help me to understand what aggregated apiserver is

[shamstabrez]

plz make a series on kubernetes networking brother asap ap aag lagare ho aisa content lakr

[bsddaemon]

Thanks for the video. When you say status and scale, do you mean status and spec? Or was scale correct?

[GaleBias]

Thank you, I learned a lot about k8s development from your video, will there be a video related to AA programming to follow?

[NageshaHS]

is it possible to return other formats of data (like js) instead of kind schema (json/yaml) by implementing custom group/api?

[venkyy]

Hi Bro, I watched all of your videos and those were very helpful. if possible can you do a series on Redhat openshift service mesh. I think it will be very helpful to others as well. Thanks in advance.

[arunbharadwaj]

Hello Vivek

Nice explanation 👍

Any plans of covering CSI

Thank you

[GK-rldu]

Hey Vivek, really nice video learnt a lot about AA server.

During authorization, you've mentioned that AA server will call API server with corresponding SubjectAccessReview object, how does this work if resourcetypes are only present in AA server and not API server ?