Linux Hypervisor Setup (libvirt/qemu/kvm)

[@kirtisingh7178]

I think its probably the best video which introduces a complex topic in a practical way and which also sufficiently explains the various nuts and bolts of it.

[@ajlozadaro]

Definitly!

[@MistaSmith]

Loving the style of this guide a lot. I love, how it's slowly but specifically explaining all the details and steps. I love the hand-or-mouse-written URL. I love the VIM based overview of where we are on the agenda. I love that you use UI and CLI based approaches together to show all options that are possible. Thanks a lot for this tutorial!

[@lucascaballero6449]

These videos are good. Please make more. Such good stuff. Direct, on point, organized, detailed. Will recommend these.

[@maticman94]

This video is a great introduction to KVM. I'm a user of KVM myself and I learned a few things. Good stuff 👍

[@atharvapatil6892]

Explanation is just so good, Really appreciate it.

[@ikura18]

Awesome, this is the best tutorial/explanation about libvirt/virsh I've ever seen.

[@yogeshpandey5168]

Easy to digest tutorial. I think overall community is getting better and better.

[@eznugse]

Thank you! Very good and clear guide how to get started with kvm. Had issues with my network, but your video helped me fix this.

[@cd-stephen]

your presentation is amazing - best explanation on such a busy stack i have ever seen

[@mathmage420]

4:30 Thank you for giving a description for why each package is used. I dislike guides that say "install these packages" without giving a reason why. It was not obvious at all why openbsd-netcat was necessary even after reading the docs and I don't want to install tools on my computer without knowing why I need them.

[@MrUnix-xf8dq]

Please don't stop making content about these kinds of things! You are, hands down the best explaining linux video creator I have encountered!

[@murjoshua]

Good workthrough man, I like the enthusiasm you're explaining with, makes it easy to follow along.

[@averageChoom]

after 3 weeks from switching to windows and got my first kvm gaming machine with a single gpu transfer KVM is amazing pls more content ive enjoyed the content and got to know more about linux virtualization

[@troytian9041]

What a nice video! I really I like you to explain how thing work behind the scene, You definitely will have more and more subscribers. Thank you. 😆

[@troytian9041]

@@joshrosso 😋

[@SidGoodOldDays]

Really liked the way you explain things. Please keep on doing what you do and let us know how we can help.

[@im_a_surfingdoggo]

You easily have the best video or guide in general on this out there! Thank you

[@isotropical]

Brilliant video which helped me figure out an annoying libvirt issue thanks to your discussion on permissions. Keep up the awesome work, look forward to seeing more content from you in the future.

[@paulgriffin8566]

Fantastic video, many thanks for sharing. I now have a clear understanding of KVM and the various components that it requires.

[@laucianexones]

This is surely one of the best tutorials i've ever seen. You are not only teaching KVM/QEMU etc, but you are also teaching how to explain something in an ordered, structured way.. with diagrams, documentation etc. I think the community should encourage people like you to create more and more content. Thanks 🙏 and Kudos 👍 for the great work

[@hovh03]

It's a mess to me Not to be negative, but I will have to make a video for this.

[@しげお-i1l]

Followed the setup while trying to build a minikube environment. probably would've lost hours and hours trying to configure everything properly myself. Thanks for the awesome work and looking forward for more videos like this!

[@dubbaluga]

Thanks for sharing this tutorial! One little hint: instead of typing `clear` in the terminal, one can also press ctrl+l (l as in letter) to clear the screen. :-)

[@unbekannter_Nutzer]

Which is either annoying. He constantly mistypes his commands, goes for and back, finally descides how the command is written, hits enter, and while I try to get the output, he clears the screen immediately, only to fight against the next command. Rule of thumb: Never use `clear`. It's an antipattern. It's a YT-smell. Let the viewer descide where to read on the screen, let him look back, two commands back. Or do it the right way, and make it part of your PS1-prompt to autoclear every command after 2 seconds.

[@NinuRenee]

+dubblaluga there's a tiny difference between the two - clear clears the whole scrollback buffer, unlike ctrl+l which only pushes your prompt to the top ie. you can still page up to view the old stuff.

[@unbekannter_Nutzer]

@@NinuRenee Well, I can't in a video of course.

[@nemonada3501]

Just a random thought but I think typing "clear" in the terminal on the video makes it obvious for the observer what is happening rather than things just disappearing, but really probably doesn't make that much of a difference for a KZbin video.

[@othernicksweretaken]

I don't mind a five letter command to clear the screen. Especially when you are using a multiplexer like tmux as he is where you might run into conflicting interpretations of ctrl+ keystrokes, although I know that the default master key in tmux is ctrl+b and that you can change any key bindings. There is another reason why ctrl+l for clearing the screen doesn't work for me because as a veteran vi/vim user I am so much accustomed to vi keymap and vi editing-mode that I switch on vi mapping to any cli tool that was linked against the libreadline and I configure my .inputrc accordingly or _set -o vi_ in any interactive bash where I am not supposed to customise this.

[@bardus_hobus]

You deserve much more views...great quality and great explanation.

[@theopenanalytics4547]

Mind blowing. Simply super Mr. Octetz. Please make more and more stuff. Thanks a lot for this video.

[@al-du6lb]

Nice little overview. Thanks man. You did a great job.

[@techbuildspcs]

I enjoyed this video. Thank you. Even though I already set up my kvm I love the explanation. Well done!

[@UpcycleElectronics]

Excellent reference quality upload. I hope I get the chance to come back and follow this step by step after finishing my first Gentoo install attempt with Sakaki's EFI tutorial....and probably an attempt at Libreboot on a Leno.... This helped me understand a few kernel configuration options better due to the application example. That was my main goal. I subscribed, and added this to a public playlist for my (& others') reference. Ref quality uploads are 21st century documentation. Thanks for taking the time to make this kind of content. -Jake

[@kenkensistoso]

Just what im looking for. I just subbed! Keep it up sir

[@lewisrobson9414]

thankyou for this video, very helpful to see the high level with the diagrams

[@_syedmx86]

Hey there, thanks for the explanation at the start. It really helped me. You have my subscription now. :)

[@ArrowOfTruth01]

Really nice tutorial to help get me kick started. Thank you very much sir!

[@szantipinterrichard7901]

Yay! thank you very much for making tNice tutorials video! Very helpful!

[@emmanuelaboagye4624]

Very Educative Video. Great Work. Thanks for sharing.

[@juliotencio5695]

great video! this is a topic I am trying to understand and you helped me a lot

[@loucinci3922]

Very helpful. Nice job. Thanks for sharing.

[@techdatamexico4530]

It seems your BLOG is not working...

[@dnlgmzddr]

Thanks!! I finally understand it. Looking forward to more videos.

[@dhamma-dd]

thanks . Very good one . all my doubts got cleared

[@techdatamexico4530]

AMAZING EXPLANATION !!!

[@diszydreams]

Really good stuff dude! Keep it up!

[@SutboxSutty]

Wow thanks bro all info no explanation fine job

[@briainodriscoll]

Appreciate the quality of your videos; good content, good audio and text clearly visible. Makes a difference! I'm looking into setting up lxd with Open vSwitch on a VPS because nested virtualization is not supported (grep vmx /proc/cpuinfo gives a blank string).

[@briainodriscoll]

I may have spoken too soon. `lscpu | grep Virt` shows ''Virtualization type: full''

[@briainodriscoll]

@@joshrosso I gather that lately it's possible to run VM's in lxd as well as Linux containers (would have preferred kvm/qemu/libvirt/virsh, but kvm atop kvm may not be the smartest) +1 for a video on networking as you kindly mentioned. I've been looking at creating an overlay thomas-leister.de/en/container-overlay-network-openvswitch-linux/ and possibly using lxd as a public network interface thomas-leister.de/en/lxd-use-public-interface/

[@bobyrasta100]

Thank you young man. great work keep it on

[@mikinio303]

This is a really amazing video, thank you!

[@jimrussell-us]

thanks for sharing your gift for instruction! Best to you!

[@arjunanranjit8148]

Fantastic video mate!!!

[@ThePrateekShrivastava]

Great quality content. Thank you.

[@execration_texts]

Absolutely top tier

[@eduardmart1237]

Great stuff! Just impeccable)

[@nemonada3501]

Yes, more vids like this. I'm only just starting to tinker with the virtual machines and I can get Windows running fine but I haven't been able to get a Linux distro running in it yet. I got some more learning to do.

[@rabinarayanpanigrahi3587]

Nice video bro. Keep posting.

[@noahwang7037]

This is a really cool tutorial video. Thank you!

[@igorandersen]

Thank you! This video was very helpful to me 😎

[@harrydadson7467]

Thank you soo much for the video, had to subscribe

[@Bigeinla]

Excellent video. Thanks

[@ThaLiquidEdit]

Very well explained man! You have my sub :)

[@dromeosaur1031]

Thanks for a great video!

[@EnsYlmaz51]

this video is what i needed, thanks

[@emdirtyyo1827]

i can't thank you enough for this video

[@atishsaha6127]

this is excellent.... i wonder if there will be another to showcase the different gpu virualization capability QXL/ Virtio options( pros/ cons and when to use or switch)...etc

[@ajlozadaro]

Amazing video!

[@stevendeng2758]

Really thanks to this sharing! Subscribed!

[@kojack57]

And that ladies and gents is how you present a topic. Thank you. Subed, liked visited an dbmarked site. Looking forward to more quality material. EDIT: Default /var/lib/libvirt/ filesystem location. I had to sell my machines and laptop so I am using pretty low resource h/w. How difficult or awkward is it be to store filesystem to a different SSD on the same machine at install or point to the new path after an install. I have a 256Gig drive which I'd really like to use to store both ISOs and machines by default and keep my Manjaro host SSD as free as possible. I've had a look around and as usual people make it way more of a thing that it actually needs to be. If you can advise or point in the right direction I will find the ONE person to down vote your video and kick them squarely in the nut sack. No promises though.

[@sweetsorrow7215]

at 25:00 you did not show virsh-install popping up a new window for OS installation using SPICE. probably it was in your other screen but not shown in the main screen window. I wanted to see that. Does that mean I can create a VM using virsh-install CLI method remotely using SSH ? or do I have to have some sort of GUI to install VM using cli?

[@SeanMacdonald_CodeMonk]

Fantastic! Always wondered how the different peices fit together and what names like "qemu" stand for

[@viertekco]

🎉this is really good bro🎉

[@HOOHA333]

Could you please explain kvm again . I did not get what you said at @1:21

[@hi_arav]

Awesome video

[@narciliocosta]

Hi. The link to the blog seems broken.

[@sudarshanseshadri2144]

Yes it's broken

[@danielkrajnik3817]

NAT port forwarding would be a very interesting topic to cover ;)

[@brunoribaric9683]

Love your video.

[@dstudio1011]

I'd like to understand how to setup the network part. Specifically how to gain access to the VM from outside.

[@example101]

Nice work!

[@JynyChen]

super super clear sharing thanks

[@khaozelectrichead]

Amazing, thank you.

[@DonEdward]

I wasn't aware that the '--disk' option CREATES the qcow2 image. I am also confused as to how to use a kickstart script and iso in the '--location' part.

[@pavankilaparthi9313]

Great explanation....👌👌👌.... And i have small doubt... How can manage multiple kvm host...? I mean vcenter can manage multiple hypervisors. As like that... How we can manage our multiple KVM hypervisors....???

[@asinha196]

when you created the VMs, who would log in.. I mean to say that I did not see the user defined in the virt-install.sh.. so actually when the VM starts what user and pwd to be given. if you could clarify that would be great help. Thank you.

[@reclee8333]

unable to complete install: cannot access storage file '/media/mike/savehere/machine/ubuntu.qcow2 that's the error i'm getting when creating a new vm. do you know what can be done?

[@dae-182]

Wow this was great! Any chance of making a short video on how to do pass-through and multiple monitors?

[@chrisperkins8347]

Only just catching up with your quite excellent channel and explanations about Libirt. One thing that I have been trying to do is correctly setup an alternative Storage pool as my boot partition is an 128GB SSD. Any chance you could do a video all about Storage Pools thanks.

[@unapologetic7900]

I have a PC with 6 physical Network interfaces. Is there a way to have Linux as the hypervisor host using1 of those interfaces, and run OpnSense in a VM using another 4 physical devices? Basically, I want to have the VM use physical network interfaces rather than virtual interfaces. What I want to end up with is OpnSense running as my network Firewall/Router, with at least 4 Network interfaces configured as a bridge, and run TrueNAS in a second VM as a NAS with it's own physical network interface. I'm doing all this now in separate machines, so I'm trying to combine it all into 1.

[@avertry9529]

Website is down

[@hrmf32]

Not good but can use web cache.

[@AdrianuX1985]

Is it possible with virtual machine backup without downtime with machines installed on the raw LVM volume, then revert from backup VM?

[@beasty082007]

Hello Josh, I was looking for your website and I can't find it.... Can you tell me your URL, there is interesting information that I would like to see slowly.

[@mgame8082]

Your website is not currently available. Can you fix the problem?

[@pop1361993]

good thing i got a overview of what these libvirt or qemu or virsh things are. However, theres still lot of things i dont understand since i dont have background knowledge on it? Can you tell how to get started on understanding systems? Im a QA however, it seems like I get to work on baremetals and installing KVM/ESXI VMs, twerking files etc which I dont know at all. Right now trying to create a VM in KVM host but getting issue with host not accessible after creating VM. From lab, got to know that br0 which is created based on phy interfaces is not available in host since i used it up as --host-device while creating using virsh-install i still have things to figure out how to add a USB connection and confirm its added to the VM... how do I get such kind of info? i can start from basics if there is such a guide?

[@jmerlos887]

A question... Why every time cpu is turned off, date and hour is lost?

[@chethanabn8126]

I dont want to use QEMU, But want to install the VM directly over KVM, i.e want to reduce the userspace to the minimum. How is it possible?

[@linux-tut]

Guide to run Linux and Secure OS: kzbin.info/www/bejne/o2m6nYaXo6x3ras kzbin.info/www/bejne/eYiqY4qrhK-nf8U kzbin.info/www/bejne/fKXLdYiJjJish7s

[@adarsh3196]

is there any performance difference comparing this proxmox or other type1 hypervisor

[@dougbertInExile]

very helpful, thanks

[@theopenanalytics4547]

Wonderful talk. BY the way is there a way to establish connection or share these vms to outside world? Please let me know any resources. Thanks

[@lakshaynz]

This is type 2 hypervisor right?

[@oah8465]

fantastic video, assuming I have a virtual machine with static-IP can I do the clone without the IP address? like to specify the new IP via the command or something like that?

[@oah8465]

@@joshrosso You rock. Gonna check it out. gonna dig deep into your channel over the weekend.

[@eduardmart1237]

Yep please make a video about different network options. Also can libvirt/qemu use RAM and HDD dynamically? I mean similar to how VirtualBox and hyper-v does this stuff.

[@vasileiossiaploulis5824]

Hello thank you very much for the video.I am studying for LFCS and i find it quite usefull!Also when i run virt install command,i face a problem:"ERROR The requested volume capacity will exceed the available pool space when the volume is fully allocated. (8192 M requested capacity > 15 M available) (Use --check disk_size=off or --check all=off to override)" The system that i use is an aws instance 1GB ram and 10Gib disk.

[@timrobertson8242]

Very awesome breakdown of the various moving parts. You mentioned that the advantage of doing a Clone is that it would help fiddle with the Client OS files. In your example, you didn't specify the Guest OS type and I noticed that the IP address remained the same (I assume the MAC address was also the same for your lead NIC). Was there some args that would help out with changing those so that multiple VM Clones can spin up without conflict - or is this part "roll your own" post processing?

[@yourlinuxguy]

Very Good Video. Pretty close to what I was looking for. What is the difference between Qemu direct install or direct creation of virtual machines and the virt-install method? Which one is better or which one should we use? Generally? For like just a simple example VM creation.

[@joshrosso]

Not much! Virt-install largely acts as a wrapper to make things more accessible for the specific domain of vm creation. If you have the patience to learn qemu config/flags, then by all means -- 1 less abstraction!

[@yourlinuxguy]

@@joshrosso I have been looking for any article to learn Qemu. I can't even find proper documentations for it. Could you please point me to it? Just started out using Qemu. Thanks.

[@joshrosso]

@@yourlinuxguy The best I know of is www.qemu.org/docs/master. It's dense. Qemu is a very capable and versatile tool.

[@yourlinuxguy]

@@joshrosso Okay, Thanks a lot, My main issue is I am using Qemu with Virt-Manager and I am not able to use 3D Acceleration there and that's why I am wandering in the Qemu CLI realm.

[@hassanzeineddine4706]

How do i use KVM on Rocks cluster or HPC cluster