Virtual Machine (VM) vs Docker

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Is Docker just a lightweight virtual machine? It's true that both have one thing in common, namely virtualization, but there are significant differences that you will need to understand in order to pick the right one for your requirements. In this video, Martin Keen explains the ways that Docker and virtual machines are similar as well as their main differences. He also covers their relative strengths and ends by offering recommendations on criteria that will help you choose which is best for your project.
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[@summatim]

0:01: Difference between Docker and VMs 2:07: Components of Docker 4:02: Components of VMs 5:43: Use cases for VMs 6:52: Use cases for Docker containers 7:56: Considerations for selecting between Docker and VMs 8:27: Transformative impact of virtualization technologies

[@Felttipfuzzywuzzyflyguy]

This video is technical enough to inform while also being approachable. Very well done, thank you so much!

[@WarpRulez]

One big difference between the two is the security of the host system: If you run something as root in a VM, it stays in the VM and has no effect on the host OS. You can completely hose the guest system with a botched command ran with root privileges, and the host OS is completely unaffected. However, if you run something as root in Docker, it will be run with root privileges in the host OS. And since you can set a different root password in a docker container, including no password at all, that means you can run stuff with root privileges without a root password from Docker, in a way that affects the host OS (eg. accesses, creates or modifies files in the host OS with root privileges). I'm not making that up, just search Docker's own documentation on security.

[@joeycrysel9333]

Which is when you run Docker in a VM or LXC.

[@fabiandrinksmilk6205]

This is where Podman comes into play.

[@markc6714]

​@@joeycrysel9333 which is when you look for a product for grown ups and not id1ots

[@siraz6899]

These tutorials series are really good

[@neail5466]

Probably the most complete and concise version in this topic from IBM.❤

[@user-nw2ls5xq9k]

Motherboard Intelligence? 😂

[@dikieaditya1321]

It is also possible to use VM and then run several Docker container inside that VM.

[@p33yush]

I am not really sure but docker requires something called as kvm acceleration. You will specially need to enable the kvm virtualization in your vm software, then probably you can run docker. I tried it in Ubuntu but my kvm OK was throwing error because it had virtual cpu

[@egemenka1]

This is how Docker works in Mac/Windows.

[@foodie3140]

Yes you can

[@magicball60]

It’s actually a common practice

[@schmud143]

this is a very typical use case from independent learning, researchers, to enterprise environments

[@Flankymanga]

Today I had a use case - a situation where we needed to decide do we need to use a docker or a virtual machine. I need a secure environment and thus isolation was very important and we choose the VM path.

[@michaelcharlesthearchangel]

One of the best examples to use when thinking of VMs in comparison to a Docker is: Non-executable Vs Executable, KZbin in Chrome browser Vs KZbin App.

[@hedgefundsrus]

I feel IBM has a Docker-bias because of their partnerships with Docker. Similar with how Microsoft OneDrive favors Adobe applications.

[@shafayet5689]

​@@hedgefundsrusyep tbh thats what I also feel

[@bizmarinainfo1808]

Neat and sweet. Thank you for the easy explanation.

[@alanjrobertson]

Great video, any chance of a behind the scenes as to how you create it? Love the glowing writing.

[@FuzzerHash]

Excelente explanation, that's so clear.

[@hugofullante3758]

Thank you for clear explanation

[@veritasliberabitvos454]

Docker - Plus it is like lego, get the pieces you need to build the environment even to the versions. So, SQL / MYSQL / Mongodb / Node / Redis Cache, etc. You bring the pieces / config in the docker compose to link these parts together. And most works well.

[@thegreatestadvice88]

Thank you for this. I am coming from finance and trying to familiarize myself with technology.

[@severtone263]

Great informative explanation. Thank you

[@Spudgun81]

Great video. I'd like some videos on telecoms/network concepts.

[@TinnyHidge]

Great explanation. Cheers! 👍

[@santanuhajra6485]

Fantastic explanation sir !!!

[@redo22]

thanks a lot for these incredible good videos!

[@Shadab-px2vn]

these IBM videos are so easy to process. Please create a learning platform too @IBM

[@harshulrohilla1868]

GREAT LECTURE THANX TONI KROOS😊

[@Hiram8866]

Very interesting and informative. I had wondered what the difference was.

[@hpandeymail]

Wow .. great lecture 🙏👏

[@Z9036]

It just struck me, but look at his hand movements when writing--he really is writing inverse. And I don't see any obvious cuts. If he does these videos in a single take while also writing English inversed right-to-left, that's quite something. That or a brilliant editing team.

[@MichaelClark-ro4vo]

My guess is they flip the whole video horizontally

[@patrick1038]

lmao why all that trouble? Why not just flip the video before posting it ?

[@tannerkinsey]

Far from homebrew… great lecture!

[@csanvi]

Thank you Martin.

[@aouss.altwaijry]

Great material.

[@larryryba4497]

Can we get recipe videos for Dockerbock and Hypervizen?

[@jaffarbh]

Nothing stops you from running containers within VMs, although that's not the most efficient way of using resources but it's the best of the two worlds ;-)

[@Gutenmorgenside]

The master brewer doing his day job.

[@BringMe_Back]

thanks a lot 👍😊

[@Bultizar]

It's common to see Docker Running on Hypervisor based VM's. Do what needs to be done for your environment. I don't think IT has ever been as modular as it is nowadays

[@vultureTX001]

VM-- because sometimes you will deploy the finished app to actual hardware after perfecting the prototype in VMs.

[@MarcoGuardigli00]

Please Tell me about your transparent blackboard technology and camera you use so efficiently! Thank you!

[@IBMTechnology]

Search on "lightboard videos"

[@mukunds3144]

We can run diverse OS in containers also, right? Please correct if I am wrong.

[@rikoari]

Did you flip/mirror the video in the post? Curious on how this writing being done.

[@IBMTechnology]

See ibm.biz/write-backwards

[@randomdaysy]

Any other home brewers just have their mind blown?

[@davidf760]

I'm so confused 😂

[@MegaStamandster]

I'm like "When are we going to start talking about brewing?"

[@gabrieltruong9052]

I am not dreaming. This guy does everything

[@MinorMood]

you really were writing all these words mirrored - so they would look in an normal way for the viewer on the other side of the screen? Wow? that blew my mind....

[@Duniel88]

Docker emulates OS VM emulates HW

[@franklemanschik4862]

Little Update for you as Docker also Handels WASM, And is mostly only a qemu like abstraction over libcontainer, Docker has Virtual Hardware i can even do cpu instructions written in JS. So i guess you view it out of a single perspective. When i now Run RISC-V which is a CPU Design and so a Full System i Run Full System Emulation Something much lower then the Hypervisor. or a Virtual Machine Monitor. You should in general maybe update your knowledge with resources about RISC-V

[@simeonovs4443]

Great video

[@velo1337]

VM is also nice if you need a GUI

[@jeremyfinger843]

What does he use to do the writing that shows on the video?? Hardware and software???

[@IBMTechnology]

See ibm.biz/write-backwards

[@TheCallumhutchy]

Very confused when i saw the homebrew guy on an IBM thumbnail 😅

[@akashsivasubramanian4067]

on time.😀😀

[@MegaStamandster]

Used to this guy talking about brewing beer :)

[@ok24140]

How did you learn to write mirror inversed?

[@IBMTechnology]

See ibm.biz/write-backwards

[@JorgetePanete]

Can you transform what you write into a standard, readable font?

[@GaryL3803]

Use close captioning (CC).

[@ErikS-]

I watched several videos on "VM vs containers". And practically each video explains it differently, which shows/causes confusion.

[@markc6714]

Mum taught me about number 1s and number 2s. I can only assume number 3s is both at once 😮😅😊

[@antoinemasselot5429]

Damn, scrolling KZbin and encountering the beer guy on a VM vs Docker video!! 😂

[@FrancescoVarrato]

More and more dockers are seen as a way to make Research Data reproducible. Still, the fact that one can certainly reproduce a docker, the problem of reproducibility of scientific research data and code will then depend on how well dockers themselves will be reusable in the future. Also, this detracts from the efforts of using more interoperable formats and protocols. I'm really undecided on whether docker containers are really a good or bad solution for reproducibility.

[@yourmamaisphat]

Why is no one talking about how he is writing backwards on the board flawlessly!! 🤯

[@continental_drift]

He's not writing backwards. Search on "lightboard videos"

[@canozmen]

Well because the video is mirrored

[@IBMTechnology]

See ibm.biz/write-backwards

[@canozmen]

@@IBMTechnology hahah

[@yourmamaisphat]

@@IBMTechnology Wow, that's a great breakdown video! Also, had me fooled! haha.

[@MrEndzo]

I have docker running on a VM.

[@severalpens]

With the exception of legacy or patching, I don't get why people are bothering to learn either. As of today you can talk to Microsoft AI Builder to build a Power App. In a few years Docker etc will all be under the hood technology managed by AI and the skills learned will be as useful as COBOL.

[@jaxxonbalboa3243]

Why doesn't Win 11 run Oracle's VM?

[@meinlet5103]

Ive installed docker recently and when I run bash script, it's significantly slower than command line.. how strange

[@tablettablete186]

Usually the 2 things that make containers slower: 1. SECCOMP: it intercepts syscalls and only allow a few 2. FUSE like filesystems: yeah, layered filesystems are slower Note: if you are not using Linux as the host, Docker spins up a Linux VM with might add more overhead

[@GoatZilla]

Is this docking?

[@BrooksOSteen]

HOW IS HE WRITING BACKWARDS?

[@jrdn5206]

This isn’t about brewing beer…..

[@dallasphillips91]

This dude makes beer in England, what in the world is he doing here!?!?! @TheHomebrewChallenge

[@saadfazelpour5385]

he gave a lot of information but he didn't explain the most important questions.

[@raff1584]

the most important question is how did he write backwards

[@ChristianWaagaard]

​@@raff1584miror/flip video in edit...

[@Mark_Wood]

shouldn't you be brewing?

[@joshuadadula-fy5kn]

Try video explaining things vs ai explaining things

[@JeremyRefoia]

cool

[@tyrojames9937]

COOL. THEY ARE ADVERSARIES❗😁😁

[@ogawasanjuro]

How is he writing backwards?

[@IBMTechnology]

See ibm.biz/write-backwards

[@kklowd]

This guy is so handsome

[@Netryon]

It's a choice to buy subscription or to use free to play model. Government helps local business and builds all other services around it. Reason why you need Docker in this case, you aren't able to pay for games, which require monthly or yearly fee or must be bought as stand alone package and politicians are shooting her mouth about it. All of that is a problem after paying all bills dreaming about gardening things to have someday. First time for virtualization was sometime ago preparing for Lab 1 experiment, learning basics and after it never needed it.

[@vapourmile]

All I know about Docker is it's just hugely resource hungry and slow and on top of that I can't think of a single application I'd use it for which I can't just download and run without it. There has been a huge amount of publicity behind Docker and Kubernetes and I just can't find a use for either of them. What I need is not a "how does it work" video it's a "Who actually uses this and why?" video.

[@cleverbobby]

Seriously? I spent six months getting a Rails app running on a production server. After discovering Docker, it was ten times easier. It's very well suited for the production environment.

[@joh551]

What kind of magic is used for the writing during presentation, or does everyone but me know how to write backwards? LOL

[@IBMTechnology]

See ibm.biz/write-backwards

[@ShivaTD420]

Are you actually writting backwards or is there a clever trick happening here

[@alib5503]

What exact accent is this?

[@AFuller2020]

The problem is Windows as a totally unreliable platform, Linux with VM is the way we go.

[@lewiskelly14]

VMs are SO MUCH EASIER

[@cfwin1776]

Apple vs orange 😂

[@oiraqih]

The question is wrongly asked, comparing 🍎 s and 🍊 s You can compare VMs to containers. You can compare VMMs to container runtimes. You can compare VMware, KVM, and XEN to Docker.

[@sengs.4838]

Is this guy seriously write letters in reverse direction like in a mirror ? How ? 😮

[@IBMTechnology]

See ibm.biz/write-backwards

[@christopherpetersen342]

Heavy sigh... A generic term on the left and a concrete implementation on the right. An IBM video is blowing off AIX WPARs (also containers) completely? I get not mentioning Solaris zones, but really? And, zero mention of docker as a (generally) 1 by 1 container technology that often needs an extra/external orchestration layer to manage more complex stuff? Some good info but not treating the subject as I might hope to see an intro on youtube...

[@RamKumar-kv1fx]

A very poor comparison, one can barely call it a comparison. Although he explains stuff, there is no clear distinction or differentiation from one another but just a mere list of points that summarises what is VM & what is docker.

[@schmud143]

that’s exactly what a comparison is

[@jamescapparell5673]

Decent explanation but if you're are going to bother to scribble on a board then at least try to be legible. Pointless if no one can read it.

[@enricosacchetti8350]

Rule of thumb: VM always works, Docker is a pain in the a

[@iAPX432]

Utterly false, in many cases Docker use Hypervisor and VM (it's platform dependent) with it's own H/W emulation and guest OS, and also H/W (CPU) emulation when needed through QEmu. So bad!