Pods and Containers - Kubernetes Networking | Container Communication inside the Pod

Kubernetes Networking | Kubernetes Container Networking | Kubernetes Pods and Containers | Kubernetes Container Communication | Kubernetes Container Port

In this video I cover one part of the broader Kubernetes Networking topic, which is container communication inside pods.
Considering Pods mostly contain only 1 main container, I start by answering the question of why having a Pod as an abstraction over container is such an important concept in Kubernetes.
I show how container port mapping is a problem with hundreds of containers, specifically how to allocate ports without getting conflicts. How this compares to Pods and how Pods solve this port allocation problem.
In addition, I show you in which cases you would need to run multiple containers in one pod and how these containers communicate with each other inside this pod.

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I'm making a complete course about Kubernetes Networking, covering rest of the topics, like
► how pods communicate with each other on the same node and across hundreds of servers?
► how does the outside world communicate with K8s cluster?
► how K8s cluster plugs into the underlying infrastructure network?
► Docker Container Networking

▬▬▬▬▬▬ T I M E S T A M P S
0:00 - Intro
0:46 - Pod - fundamental concept
1:05 - Problem with Container Port Mapping WITHOUT Pod
4:15 - Solution - Pod abstraction
6:28 - When do we need multiple containers in a pod? Side-car containers
7:08 - How do containers in a pod communicate to each other?
9:30 - pause or sandbox container
12:27 - Kubernetes Networking Topics Overview

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For any questions/issues/feedback, please leave me a comment and I will get back to you as soon as possible. Also please let me know what you want to learn about Docker & Kubernetes or another technology.

#kubernetesnetworking #kubernetes #kubernetestutorial #devops #techworldwithnana
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Legal Notice:
Kubernetes and the Kubernetes logo are trademarks or registered trademarks of The Linux Foundation in the United States and/or other countries. The Linux Foundation and other parties may also have trademark rights in other terms used herein. This video is not accredited, certified, affiliated with, nor endorsed by Kubernetes or The Linux Foundation.

[darcsoul]

Really appreciate it. Your kubernetes videos are better and more understandable than the most of the paid training offerings.
Thanks for keeping it free and sharing your knowledge to all.

[vicaf]

I just stared my job a couple of months ago. My only prior experience was 3 months of linux system administration internship.

I am in the DevOps team and your whole channel is saving my life. Thank you.

[TechWorldwithNana]

.

T I M E S T A M P S
0:46 - Pod - fundamental concept
1:05 - Problem with Container Port Mapping WITHOUT Pod
4:15 - Solution - Pod abstraction
6:28 - When do we need multiple containers in a pod? Side-car containers
7:08 - How do containers in a pod communicate to each other?
9:30 - pause or sandbox container
12:27 - Kubernetes Networking Topics Overview

Please subscribe and like the video, if you learned something new 💡🙂

[EViL]

Excellent videos, I love the bit sized format, you've just explained more in < 14 minutes, than I've learnt in 3 days of reading documentation :D

[vishalwhite]

Just now finished the same concept in LinuxAcademy (Now Acloudguru) but was very confusing. Came here and now everything is clear. The fact that this video is free and available for everyone is astonishing. You are doing a great job. If you plan on releasing a paid course, Remember you definitely have one buyer here.

[joshwolfer]

Just going to echo what everyone else is saying, THANK YOU! I've been avoiding learning k8s for months, because everyone just say's it's too complicated and impossible to understand. I've learned more from a couple hours of your videos, than I have from asking questions and looking at other resources the last year. Really great content!

[lenakultys]

You're a lifesaver. I love all your videos about docker, kubernetes and gitlab ci. I learned so much thanks to you.

[Surindersd]

This is the best explanation I ever saw anywhere discussing PODs and Containers.

[venkateshjamadarkhana]

Such a powerhouse of technology and training with ease !. Wonderful service to the technical community ! Donno how to thank you and appreciate your work. Great .... Thanks a ton Nana.

[ghopu]

Thank You, Nana ! I had watched the half of the video, decided to pause it and subscribe to your channel first. Very good explanation from basic of pod and containers.

[mastervijooutube]

Thank you so much for these videos Nana, they are a wealth of knowledge on such a complex topic which you make it so easy and that too free. Hats off Ma'am!

[jean-pierrefouche]

In my view, some of the best Kubernetes content on the internet lives here. Thank You.

[thrinathreddy]

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[ARATHI]

Hi Nana, every time I listen to your video, I am so impressed with the content, delivery and subject coverage. Thank you, and keep it up!

[warwicknexus]

Thank you Nana! I am amazed at how much effort you have put into these videos. All your videos that I have seen so far are very accurate in the details you present and also the presentation flow and sequence are just perfect! I hope you get rewarded for your efforts.

[Admiral.MacDonnell]

You are very gifted in explaining things! You make K8 less daunting!

[santhoshkumarchakilam]

As always, clear, concise and straight to the point. Thanks Nana.

[bzqrk]

Congrats ! You are a fantastic teacher! Very clear and didactic!

[pierreyves.lebrun]

Thanks for the explanation, so far I had never taken the time to even think about why the abstraction a pod offers is so important

[Joe-tkcx]

Super informative, especially I never knew the idea of pause containers until today. You are the Captain Marvel of K8s nana keep up the good work.