Kubernetes is dropping Docker support - What does it mean for YOU?

Kubernetes is dropping Docker support! Understand the reason behind and how it affects YOU
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Kubernetes deprecated Docker since version 1.20!
What the Kubernetes announcement actually means and how it will affect you:
► as a software developer, who is using Docker and Kubernetes or
► as a DevOps engineer, who is administering Kubernetes using a Managed Kubernetes Service or a self-managed Kubernetes cluster
🔗 Useful Links:
* kubernetes.io/blog/2020/12/02...
* kubernetes.io/blog/2020/12/02...
▬▬▬▬▬▬ T I M E S T A M P S ⏰ ▬▬▬▬▬▬
0:00 - Intro
0:18 - Why has Docker been deprecated?
3:10 - Container Runtime alternatives?
4:17 - What does this change mean for YOU as a Kubernetes User?
5:07 - What does this change mean for YOU as a Kubernetes Administrator?
5:30 - when using Managed Kubernetes Service
6:32 - with self-managed Kubernetes cluster
7:58 - When do you need to take action?
8:45 - Impact on using Kubernetes locally with Minikube and Docker Desktop
9:42 - Still learn Docker? CI/CD Pipeline with Docker?
12:00 - Wrap-Up
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[@TechWorldwithNana]

I hope this clarifies all your questions, if not - leave a comment and I will try to answer it! If it was helpful, please leave a like and subscribe 😊 👍 Follow me on Instagram for behind the scenes content 🎬: bit.ly/2F3LXYJ 🔗 Useful Links: * kubernetes.io/blog/2020/12/02/dockershim-faq/ * kubernetes.io/blog/2020/12/02/dont-panic-kubernetes-and-docker/ ▬▬▬▬▬▬ T I M E S T A M P S ⏰ ▬▬▬▬▬▬ 0:00 - Intro 0:18 - Why has Docker been deprecated? 3:10 - Container Runtime alternatives? 4:17 - What does this change mean for YOU as a Kubernetes User? 5:07 - What does this change mean for YOU as a Kubernetes Administrator? 5:30 - when using Managed Kubernetes Service 6:32 - with self-managed Kubernetes cluster 7:58 - When do you need to take action? 8:45 - Impact on using Kubernetes locally with Minikube and Docker Desktop 9:42 - Still learn Docker? CI/CD Pipeline with Docker? 12:00 - Wrap-Up

[@0xDEADBEEF]

I think you did not clearly answered to the question: "Should ppl learn/use docker or move forward and use containerd or cri-o?"

[@ivanpolchenko]

I think what's left unanswered for me is, okay so if docker and all of its networking and etc is going away. whats taking over? how is the ipam and host-container nat going to be taken care of?

[@shawnchong5196]

Nice video: This video just clarified the hoopla and garbage that a lot of people are throwing around. Basically nothing changes for people who are using docker tech correctly, which is proabably 98% of people out there anyways, and the benefit is kubernetes made their product more lightweight and not have to worry about the hell annoying updates of docker that happen all the time, and can break (updates are good, but annoying) Disclaimer: I am not an experienced netop/devops, my main role is developer, but I maintain servers on AWS (8 servers) for my side business, and lead netops/devops (not 100% professional, but probably better than the avg 2 yr experienced fool that has blogs online about bullcrap as I have been working with online tech for 18+ years). As for what others are saying: should I learn docker? I think the easiest answer is this: if you don't know why you are using docker, then maybe you don't use it? If you know why you want to use docker, then use it. Docker is a good choice, all others saying: this is better, that is better - yah probably 1-sided experience. Docker is easy to use, esp for beginners and THIS IS MOST IMPORTANT. If people are saying "10% faster" and stuff like that, this is pure garbage, if you know systems, you aren't concerned about 10% faster for your servers/containers, 10% would be MAYBE important for SQL server, when you are at the cusp of a breaking point of the system, but even then, you gotta change the implementation: split DBs into two servers. So rule: 10% faster means nothing, really, because you just spin up another load balanced server anyways to reduce load - these are just foolish people if they want to really make this into an issue. FASTER BY 10% DOESN'T MATTER REALLY. I will give a case where we want to use docker, and docker is good - docker runs on major OSes, and allows you to build containers (which is basically functions like a VM, without the overhead that most VMs have) - for example, we have a system where we have 4 different servers, we use cloud providers and Centos 7 (screw IBM RH), to develop locally, it's great to use dockers so that we can mimic the interactions of servers right on our computer (local dev env). DOCKER IS GOOD FOR DEVS! So on production, when to use containers? You have a choice now (AWS) - use EC2 instances OR use containers. What are the differences, and benefits for each? A lot goes to having experience - if you running lightweight processes that don't do much, like the majority of nodeJs servers people write, and services which they offer, then containers are a great option on cloud providers especially, because it's cheaper to have 1-2 live and 1 backup containers, then lets say than paying for 3 servers. It's almost always safer to have several servers running than 1 super server (what happens if that hardware dies on the super server, your services are GONE). Keyword: load balancing. Now 1 type of server is our web servers, so obviously you want to load balance two or more in production. CONTAINERS COULD BE CHEAPER THAN SERVERS. Is it easier to maintain containers than lets say traditional servers? I'm going to say if you are spinning up 64 load balanced servers, it's gonna get costly, and containers makes more sense, as they were built for huge numbers. But in all small to medium network sizes of small to medium companies, or start ups, it doesn't really matter tbh. If you actually have 1K concurrent users, then containers are great! If you running even apache php servers, you could go with containers too! it's understanding the resources/performance and costs. CONTAINERS ARE GOOD IF YOU WANT TO LOAD BALANCE 100 "SERVERS" ON LOAD BALANCER. In the end, when using cloud providers, like AWS, you have a choice of deployment now - ec2 load balanced or fargate containers. As far as I am concerned, if you don't have 1k+ concurrent users, you might not necessarily use fargate (or kubernetes) and container images. But you never had to because you could always use the traditional methods of using servers. DEPENDING ON REALISTIC SCALES AND WHAT YOUR SYSTEM IS, CONTAINERS OR NON-CONTAINERS ARE VIABLE IN A LOT OF GENERAL CASES. Anyone pushing anything real hard outside of this are just "experts" in their own fields, because all container tech are about the same, docker is great for the dev process, and it's big, like in this video. But those tools AREN'T NEEDED on your production servers (docker full features) because you shouldn't be building debugging your containers on production and for sure, you shouldn't be using docker network layer AT ALL on production. DOCKER RUNNING IN PRODUCTION IS DANGEROUS (SECURITY), DON'T NEED FULL DOCKER ON PRODUCTION ANYWAYS. In the end, you just have to think of a container as a VM and you can 32/64 "servers" in containers on a computer, think of it that way. It's probably safer and better than running 1 service on a computer (in general), which may crash in an edge case or some other weird issue (which maybe due to degradation over time, bad 3rd party software).

[@MyLife-tx2wr]

]]i

[@imransheikh578]

Nana, great video. Isn't the question a bit misleading? Is it not the case that K8s are dropping support for docker shim rather than docker? The K8s support for OCI has never been in doubt and the docker obviously is compliant with OCI. K8s are not required to support individual containers but rather focus on the Open Container Initiative, which is still the case. Would you agree to that?

[@ShreyasPBabu]

Went from "Oh Shit! we're screwed" to "Ah, this is fine" in 12 minutes.

[@AlexFeature]

Yep :D

[@sasikanth6026]

200% clear, no more questions.. Great explanation.. Thank you..

[@TechWorldwithNana]

Glad it was helpful for you 😊

[@gammelgaardmink]

I couldn't agree more. It's been a while since I watched a video about tech, with such a clear explanation of the topic - thx!

[@tonytwostep_]

As someone with a self managed and on-prem K8s cluster, I will say that changing the container runtime from docker to containerd was not only fairly straight forward, but I'm also noticing better node resource availability which makes sense given the heaviness of dockershim vs natively supported cri. I will say, the process to change runtimes was not well documented as of yet, but if anyone needs assistance and is also using kubdadm to manage their on-prem clusters, just hit me up!

[@zahurulhaque6377]

Nana, you are the best to explain the change, I was boiling the ocean to understand the change, but you nailed it in 12 min. Thanks a lot, keep up the good work. always following you.

[@SanjayKumar-rf6kh]

Just brilliant Nana. Keep up the good work !. I have referred a couple of your videos and became your big fan. The way you explain the concept is just amazing. God bless you.

[@kenchang3456]

Whew, thank you for this video! As a newbie using docker for development this took a load off my mind.

[@manikanthanekkalapudi]

Thank you Nana! Such a simple explanation🙏 Subscribed!

[@1234mytubeuser1234]

No matter how difficult or confusing the subject may be, Nana knows the way to break it down to make super duper easy. My 2 year old has no further questions, so do I :) Thanks Nana...

[@smitshah1737]

Now I am cristal clear about changes! Thanks, Tina!

[@danielyount9812]

Thanks for the rundown of the cluster changes. Having to fight to find documentation for setting a local private K8 cluster, I was set a back that this was going to be a bad thing. But with your explanation, sound like it will be smooth sailing. I would take this as a advantage to move Docker closer to the top of the stack. Containers are very slow compared to VM's(around half speed. You want VM's over containers for time sensitive services) So to take out another layer of slowness would be a bonus, if you choose the container option. If for some reason you still need the shim , it's an option.

[@saiprasadshettar1303]

Thank you so much nana,for clarifications. Always on point

[@tarasankarbanerjee]

Excellent as always!! How do you anticipate all the questions that can arise!! Just awesome..

[@TechWorldwithNana]

😀 thank you so much! I read a lot of your comments and questions and try to answer them in the videos 😊

[@ravindrav1450]

My most productive 12.21 minutes of today; Thank you Nana :-)

[@TechWorldwithNana]

Glad to hear :)

[@juliodias3342]

Thanks for the explanation, Nana! Great as always :D

[@ebenessy]

It's the first time I see your channel and I'm really impressed by the quality of your explanations and the way you're presenting them. Pleased continue this great work. Thank you.

[@Elocess]

I have never seen a topic explained with this level of clarity on KZbin

[@pazonec]

So comprehensive and clear! If you can explain it simply, you understand it perfectly...

[@ariefirawan1586]

Crystal clear, just watched one of your videos, i subscribed right away

[@melvinkimathi8924]

i wish i had discovered this channel earlier ... you got yourself a new subscriber

[@n8style]

Thank you for the concise clear explanation, much appreciated!

[@BlurryBit]

This video along with the Jeff Geerling's video cleared the concept for me. Thank you!🙏

[@ashwinin4819]

When we watch a video we get so many questions,.how why, and this video answers all those questions the next minute/seconds... Thank you so much. Subscribed!!

[@TechWorldwithNana]

Welcome to the channel 😊 Thank you so much for your positive comment!

Nana, thank you for this!

[@jeddak]

Excellent explanation. Thank you for clarifying all of this.

[@pedroreisbr]

The Queen of DevOps, sharp as always!

[@TechWorldwithNana]

Thank you Pedro! 😀

[@Joe-tk8cx]

Perfect explanation, just the thing I needed, just as request, can you do a tutorial on crio or containerd.

[@Farrukhw]

Thank you Nana... Actually, I never knew about this change and at first, I got worried, as I only worked with docker...

[@nacho2739]

I really appreciate this kind of videos! Very helpful :) Thanks!

[@sudhakarnarasimhan5431]

Thanks a lot Nana for the clarification. Clarified all my questions on the k8s deprecation of Docker.

[@code4java725]

Woow, the details you provide is an excellent, I'd love your videos Nana. I appreciate you to making this video, and sharing. Keep on uploading new videos. You're a good teacher. Thank you.

[@MarimuthuSA]

Awesome clear explanation. Thanks a lot for publishing this video.

[@josemunoz7981]

Thanks a lot Nana!!! You are our first info source in this k8s world!! You are brilliant nana!.

[@Htnawsaj]

Perfect... More such videos are welcome whenever we hear new announcements or deprecations

[@karthik14141]

Excellent and well required video - as always.

[@gauthamcrr6262]

Very clearly explained. Thanks for the Video!!!

[@srikiran8027]

Thanks Nana. Recently I started exploring Docker. Great explanation from your side and this video is very helpful.

[@ilyasbouziane4125]

You made it so clear ! I love the way you explain things

[@TechWorldwithNana]

Thank you Ilyas, really glad you like my way of explaining it :)

[@asraotuni]

As usual, simple, relevant and clear. 👍 Thanks

[@jeffdunn890]

Awesome and very clear explanation. Thanks!

[@AdarlanTeixeira]

Your videos are so clear, helpful, inspiring!

[@aftabshaik8767]

Great explanation. You have cleared all my doubts. Thanks a lot!

[@hassanabdulali7867]

Very clear; short and sweet like master's approach; great video

[@kavuluridattasriharsha]

Thanks Nana for excellent explanation of the topic. This is really useful. Thank you.

[@matthewFerler]

Great explanation! Because of the high quality of this and other videos that Nana has created I've subscribed to her channel.

[@sid0000009]

Ur explanation is so clear . Thank you

[@motbus3]

very complete video, well written script and nice pacing. just subscribed because of the great work here :)

[@tilmow9763]

Yet another cristal clear straight to the point video, bravo! which leaves me begging for others, specifically on the container runtime landscape. I understand CRI-O or containerd can only replace Docker **within** kubernetes as container runtime, i.e that can't be used to build or run a standalone containerized workload --> is that correct? more generally, some intro videos on docker alternatives will be more than welcome : how to install them to set-up a k8S cluster, how to configure the latter accordingly, how do they work ... etc. Thanks again for the great content

[@AlfianFirmansyah]

I was clapping👏when you clearly explaining the CI/CI part needs docker or not. thank's nana.

[@TechWorldwithNana]

😊🙏

[@marcelhh2101]

Clear in 3 minutes!!!! Very good explanation thanks

[@vvmadhavreddy]

Super clear explanation, thank you!!

[@MeNumber47]

Very Very Well made video! Thank you!!

[@johnsawiris5988]

It can't be explained better, really. Thanks you so much!

[@TechWorldwithNana]

Thank you John, appreciate your feedback :)

[@mohsenfilm]

Perfect video, very clarify answers my questions about this news! thanks for your video

[@dvdspndl]

Thanks a lot! This is a really helpful overview.

[@satyabratm]

Very informative. Thank You for explaining it so well!

[@rajarahul9975]

Very very well explained! Thanks for making this video :)

[@rjcdz06]

Nana, Excellent explanation! Thanks so much!

[@cafemike111]

As always, extremely clear!!

[@jondoe79]

Simple, sweet, and concise. 👍

[@MANISHRAUT]

Perfectly cleared all the doubts. Thanks :)

[@TechWorldwithNana]

Glad to hear! :)

[@Firecrak]

Great and clear explanation, thanks Nana!

[@ashraffouad]

Many thanks for clear and detailed explanation 👍

[@ravenouslucifer1087]

This is the most Simplest explanation ever i have ever seen ❤️❤️❤️

[@samr6148]

Thanks very much for explaining the impact of the deprecation! Being new to Docker I happened to catch wind of this news on Reddit and was wondering how it would affect my path to learning Docker and eventually K8. Your video was very helpful!

[@TechWorldwithNana]

Thanks Sam, glad it was useful for you :)

[@JOlsson01]

Great video. I can breathe again. Glad I found your channel. Subscribed.

[@giant3909]

I'm a beginner in Docker and a total noob in K8s, but I found your video really informative and easy to follow. The graphics are top notch!

[@nitinjamadagni]

superb content. very concise and just appropriate as high-level information for us to choose and dig deep. Please consider open-sourcing the slides if you have.

[@rajib2k5]

Thanks for sharing this update! Joining the fan club. :D

[@nparsona]

Just had this question posed to me yesterday. Well now I know. Excellent and timely information.

[@TechWorldwithNana]

glad to hear! 🙂

[@allanhangaard]

I've just started learning Docker and Kubernetes (or K8s as I've just learned) and was a bit worried if this was a waste of time - until I saw your video. Thank You :-)

[@danleuc]

Great. Thank you Nana!

[@zeljkozrnic4159]

BRAVO Nana!!! Your explanation is clear. Kudos to you. You have a new subscriber. :)

[@kriansa]

Wow, very informative and such a high-quality content!

[@TechWorldwithNana]

Thank you Daniel! Appreciate your comment!

[@RohitRaj-yh6dm]

waiting for this video to get all the doubts cleared. Thanks Nana

[@TechWorldwithNana]

Hope it was helpful Rohit :)

[@JavierGarcia-se3vi]

Best explanation ever, thank you very much, Greetings! 😊

[@ankitjain0912]

Clean and clear explanation with details included :)

[@JoshPeak]

I love how well researched and articulated this is!!! 👏 thank you! I learnt a lot about “the in between bits” too.

[@TechWorldwithNana]

Thank you Josh, appreciate your comment :)

[@nathan655]

Thank you for the clear explanation with pictures.

[@midwestexplorer]

Thank you, this was very helpful.

[@maharshidave7302]

Explained perfectly and with complete clarity... Thanks for video

[@ajaybose3602]

Awesome as always. Thanks

[@MusobarMedia]

loud and clear, thank you Nana

[@Pabpereza]

Thanks you for the clean and simple information!

[@lalitds8427]

Very much clear 👍🙂. as always great explanation Nana...👍

[@TechWorldwithNana]

Thanks a lot :)

[@diegoramos27]

Your videos are the best, I can learn a lot in only a few minutes, thanks so much

[@TechWorldwithNana]

Thank you Diego. I'm happy to hear 😊

[@quentinsf]

Brilliantly clarified -thanks!

[@ymsalem]

Excellent review & explanation of the issue with crystal clear wording and graphics. Thanks!

[@TechWorldwithNana]

Thank you for this feedback, appreciate it very much :)

[@sam_fujiyama]

Thank you, that was very helpful and clear !

[@bitronicc1887]

Thanks for the informative, well organized video.

[@pranavraj4655]

This was extremely helpful. Thanks 😊

[@zabelsky]

Clearly good observ. Thank you!

[@kvkrishna143]

Bird's eye view of the recent K8's announcement, there were articles that mislead (for various reasons) "Docker" (instead of Dockershime) being dropped.

[@HakunaMatata225]

So did the title of this video!

[@JoachimKessel]

Great explanation! Thank you so much!

[@amarlukade2225]

super fantastic... you are mind blowing.. very much hard topic now i understand in few minutes.. credit goes to ur video.. thanks

[@taranjotsingh2374]

Your videos really create impact on freshers like me... Thanks Nana form bottom of my heart.....

[@TechWorldwithNana]

Happy to hear, thank you 🙂

[@prabal37]

Clear all the doubts.Great explanation

[@rajgangadharan]

Interesting and informative video. I was looking for such a comprehensive video. You saved at least 4 hours of my time .

[@TechWorldwithNana]

That's amazing to hear! Thank you!

[@andrewWolf24]

Thank you for your explanation! I know a bit of docker and I didn't already start to study kubernetes. This video was clear even to me that I don't know anything about it. I'll keep going this journey in the docker+kubernets world then!

[@TechWorldwithNana]

That's awesome, thank you Andrea :)

[@mushtaqsheikh6208]

Thank you very much. This is the best explanation.