Getting started with LXC containers

In this video I will give you an introduction to lxc containers and how you can use lxd to work with machine containers.
lxd is a light weight alternative to hypervisors. You can spin up a virtual machine very quickly. It is very light on resources.
I will be using Ubuntu 18.04 virtual machine in this demo and show you how to install and launch machine containers. I will also show you how to use some commonly used commands.
Linux Containers Playlist:
kzbin.info/aero/PL34sAs7_26wPfLNZ5NKoH0RKbTAWMlh2I
For any issues/feedback, please leave me a comment and I will get back to you as quickly as I can. If you liked this video please share it with your friends and don't forget to subscribe to my channel.
Thanks for your time watching this video. Hope it was helpful.
If you wish to support me:
www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=F8FN37PAD629Y&source=url
#lxc #lxd #containers #kubernetes #justmelxd #justmelxc

[@gilulig]

After the first 5-6 minutes regarding this video, I was completely amazed at how clear, concise is, and by the just-right deepness of revealed knowledge. I would love all videos were as good. Thank you.

[@justmeandopensource]

Hi Raoul, many thanks for watching. Cheers.

[@1017BuurPRODUCTIONS]

Hey Venkat. Amazing tutorial video. I work with k8s deployment for customers and wasn't aware of lxc containers. This is a game changer!

[@justmeandopensource]

Hi, thanks for watching. Yes, ever since I discovered LXC, I started using it for everything and almost stopped using Virtual Machines. And my Kubernetes nodes are all LXC containers. Cheers.

[@ManpreetSingh-og4fy]

This is called great content. Says a lot about the knowledge and understanding of the presenter. Complicated topic explained in the easiest possible manner. Excellent Stuff !!

[@justmeandopensource]

Hi Manpreet, thanks for watching.

[@aghahasaan]

You have made a very complicated topic look like child's play. Hats off bro and thank you.

[@justmeandopensource]

Hi, Thanks for watching.

[@manishfoodtechs]

I will rate you as best teacher . This is the simplest but robust explanation

[@justmeandopensource]

Hi Manish, thanks for watching this video and taking time to comment/appreciate.

[@enriquezurita4784]

Quick, Agile and very well explained. Thank You!!

[@justmeandopensource]

Hi Enrique, thanks for watching.

[@davidmburunjoroge1329]

Concise, very clear and vey easy to understand! Amazing tutorial.... 👏👏👏👏

[@justmeandopensource]

Hi David, thanks for watching.

[@ishehad8091]

Awesome overview - concise, to the point, easy to follow. Good job, bud!

[@justmeandopensource]

HI Ish, many thanks for watching. Cheers.

[@prashantsingh1096]

The best way to learn about containers , because lxc has simple commands . Thanks , The kubernetes and docker are hard to understand comparative to this .

[@justmeandopensource]

Hi Prashant, thanks for watching.

[@subhankarpadhy5146]

I've been following your series and I've found them very informative for newbie like me. Thanks a lot sir.

[@justmeandopensource]

Hi, Thanks for watching.

[@TheAirak]

My time well spent! Thank you very much!

[@justmeandopensource]

Thanks for watching.

[@GauravSharma-ui4yd]

Finally i did this. What a hands-on video this is. Great walk-through venkat. Can you make such an hands-on video on chroot jail and resource throttling using cgroups

[@justmeandopensource]

Cool. Good job. I will see if I can do those videos. There are lots in my list to do already, so I can't guarantee I am afraid. Cheers.

[@davidsyengo1893]

Very comprehensive guide!

[@justmeandopensource]

Hi David, thanks for watching.

[@ItsMe-nl5or]

A very nice, amazing and clear tutorial. You build and structured it very well. Many thanks for that.

[@justmeandopensource]

Hi, thanks for watching.

[@hyqhyp]

The 80% that covers 99% of uses. Superb.

[@justmeandopensource]

Thanks for watching.

[@vishnuganesh2496]

Fantastic presentation! Best I've seen on this topic. Thank you very much!

[@justmeandopensource]

Hi Vishnu, Thanks Thanks for watching.

[@abessesmahi4888]

You are a great tutor sir. Thank you so much for your efforts.

[@justmeandopensource]

Hi Abesse, thanks for watching.

[@c3rb3ru5d3d53c]

Great introduction to lxc/lxd great!

[@justmeandopensource]

Hi, Thanks for watching.

[@otvs5838]

Awesome you are 🎉 Thank you for your time. Really appreciate 🎉

[@justmeandopensource]

Thanks for watching.

[@魔君在放克]

You are definetely one of the best sharing with us

[@justmeandopensource]

Hi Phentony, thanks for watching.

[@sujaysaha6323]

Simple and helpful. Really liked it. Appreciate your work. Keep it up.

[@justmeandopensource]

Hi, thanks for watching.

[@kb8623]

Wow wow wow Perfect perfect perfect Thankssss Very very nice tutorial 👌👍👏❤️😊

[@rsrini7]

Simply Wow!! "Inception" of Containers.

[@justmeandopensource]

Thanks for watching this video Srini.

[@ajit555db]

This is awesome for Windows VirtualBox users. It would allow me to create a single Linux VirtualBox VM and then create multiple lxc containers utilizing all the full resources of my linux VirtualBox VM, keeping it always a clean image. Super efficient utilization of RAM and storage.

[@justmeandopensource]

Thanks Ajit for watching this video and sharing your thoughts. Cheers.

[@SomeRandomPiggo]

thank you so much for making this video! really appreciate it

[@justmeandopensource]

Hi, thanks for watching. 🙂

[@TheGdhungana]

Most awaited video..I hope you would make its series. Thanks for your time and effort

[@justmeandopensource]

Thanks Ganesh. I will see if I get enough areas/topics around lxd to make it a series. I am planning to do a video on my other series "Learn Kubernetes" about setting up a cluster using LXD containers. So I made this one as an introduction.

[@seggsfault]

Thnx venkatesh you are awesome....Keep doing these man. love the way you present everything.

[@justmeandopensource]

Glad it is useful. Thanks for watching.

[@adnenettayeb1153]

It's really easy to understand . Thanks for this video .

[@justmeandopensource]

Hi Adnen, many thanks for watching this video.

[@ronanluciopereira8800]

Very good. Thanks for sharing

[@justmeandopensource]

Hi Ronan, thanks for watching.

[@windowsrefund]

Really glad I circled back to this. Excellent job :)

[@justmeandopensource]

Hi, thanks for watching.

Outstanding video! Crystal clear!

[@justmeandopensource]

Hi Herve, Thanks for watching this video.

[@pareshpatel493]

Great informative session. So helpful...

[@justmeandopensource]

Hi Paresh, thanks for watching.

[@mandirdarshanarti]

good explanation and quick

[@justmeandopensource]

Hi Piyush, thanks for watching this video.

[@maslo700]

37:20 You can just type `mkdir $(seq 5)` or simply `mkdir 1 2 3 4 5`. Great video, thanks!

[@justmeandopensource]

Hi Greg, thanks for watching. Yeah I could have used that. But sometimes muscle memory kicks in.

[@andreasschnitzerling9332]

mkdir {1..5}

[@VishalGandhi1]

Great tutorial Venkat.

[@thelinuxbox]

Amazing tutorial.

[@justmeandopensource]

Hi, Thanks for watching.

[@Sarsa78]

Master class on LXD thank you man! 39:27 To see the list of snapshot names for a container you can do: lxc info containername and you get the list at the bottom.

[@justmeandopensource]

Hi Eric, thanks for watching.

[@Sarsa78]

@@justmeandopensource Thank you for putting up this high quality content helping many people like me. Cheers!

[@justmeandopensource]

No worries. My pleasure.

[@gustavomariani4225]

Excelent video bro. Thanks !!

[@justmeandopensource]

Thanks for watching.

[@seejanraj]

Thanks. Loved the video.

[@justmeandopensource]

Hi Seejan, thanks for watching. Cheers.

[@makrand1584]

Nice video Venkat. I wasn't aware about so many things that are possible with LXC. A real good replacement for vagrant & virtual box. and light weight too. BTW, one can always set alais for the image. "lxc image alias create cent7 ". So next time you can launch centos7 container just using "lxc launch cent7 instead of tedious image name.

[@justmeandopensource]

Hi Makrand, thanks for watching and sharing that wonderful alias tip. Would definitely be helpful. Cheers.

[@tonydematteis5029]

Very well done! Direct, to the point w/ good examples. Love it...

[@justmeandopensource]

Hi Tony, many thanks for watching. Cheers.

[@justmeandopensource]

Hi Tony, many thanks for watching. Cheers.

[@tamilselvansellamuthu5950]

Thanks Venkat :) it is very informative.

[@justmeandopensource]

Hi Tamil, thanks for watching.

[@KiranDevraaj]

tack sharp on the concepts. thanks for making concepts clear. subscribed !

[@justmeandopensource]

Hi Kiran, thanks for watching this video.

[@prometheus1672]

This is a really nice tutorial. I was able to follow along and setup LXC on my Manjaro system. I do have one suggestion, though: don't clear your terminal so quickly for tutorials and teaching videos. I clear my terminal a lot as I'm working, too, but for the purposes of learning I had to rewind and pause the video quite a lot to see what you just typed and what the output was.

[@justmeandopensource]

I see your point which is very valid when I think from the viewers point of view. Never thought about it. Thanks for watching. Cheers.

[@jdorgeville]

Cristal clear! Big thanks!

[@justmeandopensource]

Hi Jan, many thanks for watching this video. Cheers.

[@soumyanilbiswas_reveng007]

Really good tutorials, gave me a hell lot of knowledge...

[@justmeandopensource]

Hi, thanks for watching. Cheers.

[@soumyanilbiswas_reveng007]

@@justmeandopensource 😁

[@forrestkong3455]

Nice Start Video , Great Thanks

[@justmeandopensource]

Hi FanJun, thanks for watching this video.

[@lanceeilers5061]

Cool stuff :-) have a great one and keep smiling :-)

[@justmeandopensource]

Thanks for watching.

[@solracthegreat1002]

Many thanks for your excellent work, I was depressed about Kubernetes and Docker till I found your videos. Is there a way to expose a service from a nested container? THANKS!!!!!!

[@VJ-po5qh]

Thanks Venkat, Really super quality stuff, just couple of things which I experienced during testing nested container on CentOS 7 host (VM). 1) while doing lxc init inside the container it didn't want about security.nesting and security.privileged 2) was able to create nested container but it only get ipv6 there was not ipv4 or networking enable on it. (no ipv4/default route/gw)

[@justmeandopensource]

Hi VJ, thanks for watching. I haven't explored or experimented much with nested lxc containers. The reason to enable security.nesting is to be able to run docker containers within the lxc containers.

[@alessonnunes3236]

@@justmeandopensource Why run docker within lxc. One question more lxd is not an alternative to docker?

[@justmeandopensource]

@@alessonnunes3236 Hi, lxd is not an alternative for Docker. Docker is best suited for application containers running single process. Whereas in LXC/LXD, you can run a full virtualized os in its own namespace.

[@alessonnunes3236]

@@justmeandopensource Thanks, well explained, now I'm watching your full playlist. Great videos!

[@justmeandopensource]

@@alessonnunes3236 Thanks for your interest in my videos. Hope you will find it useful.

[@Himanshu-Patel-Clarisights]

Thanks a lot Venkat !!

[@justmeandopensource]

Hi Himanshu, thanks for washing.

[@rain2besoon]

this is amazing content

[@justmeandopensource]

Thanks for watching.

[@surugiualexandru5151]

Very good video, Thank you!

[@justmeandopensource]

Hi Surugiu, thanks for watching. Cheers.

[@texaslinux]

This was really fantastic, thank you so much!

[@justmeandopensource]

Hi Keith, thanks for watching this video.

[@ordidaad]

Awesome, very clear and eloquent, I have a question, is it practical to use LXC in production env?

[@justmeandopensource]

Hi Kourosh, Thanks for watching.

[@ash-lo2dc]

Very informative thanks

[@justmeandopensource]

Hi, thanks for watching. CHeers.

[@Pananananananananify]

Great tutorial!!

[@justmeandopensource]

Hi, thanks for watching.

[@amarnathch3114]

Very informative Thanks. I have a question on lxc container. What will happen when call "sys.powerctl" "shutdown" from container? So the shutdown will be applicable to the same contier or whole system?

[@justmeandopensource]

Hi, thanks for watching. I haven't tried that. Have you? Whatever you do within the container shouldn't affect the host system. I guess it wouldn't have permission to shutdown the host system.

[@qwerty180119990]

Loved the tutorial...Thanks a ton!!!

[@justmeandopensource]

Hi Ayan, thanks for watching this video. I am planning to do more videos on LXC/LXD. So stay tuned. Cheers.

[@arunsarma7997]

Thanks Venkat for your clear explanation and instructions. I have a Question for you. Is it possible to run the Provisioning similar to vagrant. Meaning I want to create the kubernetes cluster during the provisioning. In vagrant, it is possible to create our own image containing all the required softwares from the bare OS, then we can use this image for creating the cluster by running kubeadm during provisioning. It takes very less time to bring the entire cluster using this method.

[@justmeandopensource]

Hi Arun, thanks for watching. LXC images are just a bunch of files that gets extracted when you launch a container. You can build your own lxc container.

[@msahsan1]

Awesome thanks

[@justmeandopensource]

You are welcome.

[@balamuruganvms5158]

Thank You !! Awesome

[@justmeandopensource]

Hi, thanks for watching.

[@AfshinKarimi-l1d]

Thank you for sharing your knowledge. i have a question, in "lxc list" output in the type section, i see only "container" and "virtual-machine", your type is persistent. what is the difference? my second question is that my lxc container doesn't get an ipv4 address, what did a do wrong?

[@vipinmon]

Thank you. B/w what is the screen recorder you use?

[@justmeandopensource]

Hi Vipin, thanks for watching. I use Simplescreenrecorder. Cheers

[@kamilwronka1417]

Hello, I have a question regarding the deployment of charmed kubernetes with LXD. How can I expose the cluster to the internet? I've deployed it on bare-metal server on Hetzner with Traefik as a load balancer and added metallb to assign external ip to it. When I try to connect to that IP nothing happens (usually I had 404 not found from traefik while using other kubernetes solutions).

[@RajarshiBandopadhyay]

Video starts and I see TMUX. That is my signal to click on the Subscribe button.

[@justmeandopensource]

Hi Rajarshi, thanks for watching this video and subscribing.

[@gopikrishna7779]

Informative Session.. Thanks for sharing your knowledge with us. I have one quick question.. just like MongoDB series, are you planning the same for Oracle 12c DBA ?

[@justmeandopensource]

Hi, thanks for watching. Sorry. I am not a DBA and not planning to do Oracle series.

[@AhmedMahmoud-tr1yf]

Thanks for all of these amazing videos! quite new to linux, may I ask you which widget/tool/software you use to show your system monitoring metrics always on top of everything? I like it so much.

[@justmeandopensource]

Hi Ahmed, thanks for watching. The system status you are seeing on the right side of my desktop is from conky. I used to use conky and had a custom conkyrc config file. But I don't use it these days and unfortunately I didn't save that config file anywhere. You can install conky and hunt for conkyrc file online and you will find lots of cool configs. Cheers.

[@InvisibleManCZ]

Do you know what would happen if I shrink the memory for a container bellow the current usage?

[@harir4982]

Sir, do you use as your daily driver?, if you are using.. what are all the challanges you face with work environment and Linux users?

[@justmeandopensource]

Hi Hari, are you asking about the operating system I use on a daily basis? If so, I use Arch Linux with Gnome desktop environment. I used to use I3 tiling window manager but switched to Gnome since its version 3.36. Linux has been my daily driver for more than a decade.

[@utvikler-no]

Thanks for an awesome introduction ;-)

[@justmeandopensource]

Thanks for watching this video Tom and taking time to comment. Cheers

[@pradeep19051988]

We are looking for Hypervisor solution, our requirement is to use two displays, two independent users with extensive multimedia use cases, Does LXC container replace the Hypervisor in our use case?

[@mchannel1365]

Thanks a lot Venkat, do you know how to migrate LXC containers in cloud ?

[@justmeandopensource]

Hi, thanks for watching. I haven’t tried this in the cloud though. So sorry no idea. Cheers.

[@toshn4151]

This is great, thank you!

[@justmeandopensource]

Hi Tosh, thanks for watching.

[@manikandans8808]

This video makes my system returns from VM to LXD. It saves lots of RAM than the VMs. Thanks for this amazing video. Is there any possible to demonstrate clusters, network and Stroage in future videos? And what's the main difference between LXC and LXD containers?

[@justmeandopensource]

Hi Mani, LXC is the underlying Linux Container libraries and LXD is an interface (REST API) that talks to LXC libraries liblxc. LXD is considered as an extension to LXC to make things easier.

[@robertalvaradolugo3010]

Great men

[@justmeandopensource]

Hi Robert, thanks for watching.

[@24041984girish]

Where will be the Network configuration details for these container? I am trying to create a bridged interface to allow my other network hosts to access these container. I need to update following parameters: lxc.network.link, lxc.network.ipv4/6, lxc.network.ipv4/6, lxc.network.veth.pair etc. Could you help?

[@justmeandopensource]

Hi Girish, Thanks for watching this video. By default lxc containers can talk to internet and other hosts in your host network range by lxcbr0 bridge interface using NAT. But other hosts in the network won't be able to talk to your containers. You have to configure macvlan for this. There is a good article/blog post written by someone which might help you in the right direction. Please check the below link. www.thegeekdiary.com/how-to-set-external-network-for-containers-in-linux-containers-lxc/ Thanks.

[@24041984girish]

@@justmeandopensource Thanks for the video and your reply. actually, I am facing 2 problems right now. the link you gave also creating a new bridged interface and modifying in container config file. First, after creating new bridged interface in /etc/network/interfaces my host lost the internet connection. Second, not able to find network configuration details for these containers. though, i find \etc\lxc\default.conf

[@justmeandopensource]

@@24041984girish I will have to try that in my machine. I will let you know if I get anywhere with it. Thanks.

[@maherkhalil007]

hello friend, it that container technology suitable for creating vps instead of vm?

[@justmeandopensource]

Hi, thanks for watching. LXC containers are essentially system containers that mimic an entire operating system as opposed to Docker containers which are application containers. VPS is virtual private server which is basically a virtual machine. So you could use lxc containers for that as you would for a vm. Cheers.

[@maherkhalil007]

@@justmeandopensource hello friend, can we meet in zoom or team for further discussion? if you have time you can support me in work

[@justmeandopensource]

@@maherkhalil007 Thanks for your interest. But I am afraid I can't do 1 to 1 training support as I have a primary 9-5 job. I post videos whenever I get some time and answer questions in the comments section whenever I can. Sorry. Cheers.

[@maherkhalil007]

@@justmeandopensource hello my fiend, I also have good experience but I will need some help to my questions then I can do my work. we can meet 1 or 2 times only per week then you can guide me

[@HelgaSmurman]

how did you make the terminal windows connected to each other like that

[@vshnukantr9152]

Hello Venkat, Thanks for the video. I have a question. I am running a hyper v session on windows 10 with ubuntu image. Inside the VM, I started playing around by installing lxc containers for centos and also for ubuntu18.04 for trying out the mongodb replicaset. However, a lot of my disk space on PC was consumed. I started with having 50 GB and ended up with 20 GB free space and a lot of warnings. You mention that the image size is very light around 180 MB lets say... Trying to understand what takes up a lot of memory and how to I clean up the memory ? I have cleaned the lxc containers and stopped the lxd service. (new to the VM world)

[@justmeandopensource]

Hi, thanks for watching. Its your Ubuntu virtual machine that has taken those space. All the LXC containers are just light weight and small sized that are only living inside your Ubuntu virtual machine.

[@vshnukantr9152]

@@justmeandopensource Hello Venkat. Indeed you are right. The VM took the space. Actually I clicked on checkpoint option and it consumed 5GB data. Later I deleted and disabled the checkpoint. Also, I had to allocate extra space for VM because we had to install docker on the lxc container instances. Good learning curve. Thanks for the response.

[@justmeandopensource]

@@vshnukantr9152 No worries.

[@harir4982]

Sir, how secure is lxd , if we are running kali linux and there is a chance of tracing us

[@justmeandopensource]

Hi Hari, thanks for watching. Containers are secure by themselves in that it runs in an isolated namespace. It won't be able to access any filesystems on the host. Anyways you will have to secure your host. Anyone having access to your host will be able to access the container.

[@rukey3001]

Thank u very much for the tutorial . When I run "$ lxc image list" command, ,mine shows "container" instead of “persistent “. What am I doing wrong??

[@nestorreveron]

The best!

[@justmeandopensource]

Hi Nestor, thanks for watching.

[@anusham3964]

Can I convert a lxc container to docker container or how to run and start a lxc container inside docker

[@justmeandopensource]

Hi Anusha, thanks for watching this video. Both of your questions are not a valid use case. No one would want to do that. LXC is different than docker. LXC is a full blown virtual machine running under the host kernel and isolated file system without the need of hypervisor like VirtualBox. Docker is for application isolation. You package your application along with supporting libraries into a container and you run single process on docker container. There are hacky ways to convert lxc container to docker container by exporting lxc container to a tar ball and using Dockerfile to import that filesystem. But its not a valid scenario. Your other question also doesn't make sense. Hope you understand the difference between LXC and Docker containers. They are built for separate purposes. Hope this makes sense. Thanks.

[@rajendragosavi2233]

Hi Venkat. Great course again. One question - can i install Lxd on my raspberri pi ?

[@amitroy-cx2qb]

Hello I have configured my ubuntu LXD in my VM. Now I want to ping that my lxc contenier from my VM to my local system. but using this command it's not working (lxc config device add mongodb001 eth0 nic nictype=bridged parent=lxdbr0 name=eth0)

[@kamilaboud]

I have lxd_route_server image stored in my flash drive . I want to copy it to my lxd host . Then import it . It is not working .

[@subhankarpadhy5146]

Thanks sir

[@justmeandopensource]

Hi Subhankar, Thanks for watching.

[@manikandans8808]

When I use macvlan as network interface , it can ping between the containers only but it does not ping the host machine ( mycase Ubuntu 18.04) since it has the same ip range. Would there be a solution for it?

[@justmeandopensource]

Hmmm. I have never used macvlan interface on the virtual machines or containers. May be the below stack overflow link could help. kzbin.info/www/bejne/e6mxdX9rhrGBqLs They were talking about enabling promiscous mode on the interface.

[@william8106]

You're the best

[@justmeandopensource]

Hi William, many thanks for watching this video.

[@saalimmushtaq3472]

Incase of bare metal hyperviser you don't have any OS intalled on it,how come you have shown it in your diagram?

[@shravansingh8609]

hey mate thanks for video. in this video would u work on 2 terminal simultaneously???

[@justmeandopensource]

Hi Shravan, What do you mean? I use tmux and I split panes. If I want to run commands on multiple panes simultaneously, then I can syncrhonise the panes.When I type a command on one pane it gets typed on all the panes. If this is what you mean. Thanks, Venkat

[@shravansingh8609]

Thnx venkat i understand the idea

[@justmeandopensource]

@@shravansingh8609 Cool.

[@vijaychebium3216]

Hey. thanks for the video. This is exactly what I am looking for. A couple of questions. VM's, LXC/ LXD, Application containers are in three separate physical machines? Can i run hypervisor, LXC/ LXD, Application container (Docker engine) on single host OS?

[@justmeandopensource]

Hi Vijay, thanks for watching this video. Yes you can run all of them in single host. Thanks.

[@vijaychebium3216]

@@justmeandopensource My problem is I can't ping the LXC container from Host OS. however, I am able to ping btw LXC containers and to the internet as well. I have attached OVS to my host OS.

[@vijaychebium3216]

Issue resolved after changing the lxc profile from macvlan to bridge

[@justmeandopensource]

@@vijaychebium3216 glad that you resolved. When I did lxd init, the default network that was setup automatically was a bridge network. Thanks.

[@vijaychebium3216]

@@justmeandopensource How to change the LXC container storage (Dir) to btrfs?

[@imena476]

What is the location of the created containers (lxc machine) because I don't find my containers in /var/lib/lxc (default location) ? Thanks in advance

[@justmeandopensource]

Hi, thanks for watching this video. It will be under /var/lib/lxd. If you used snap to install lxd, then it will be under /var/snap/lxd Thanks.

[@imena476]

@@justmeandopensource thanks a lot for answering me BUT I don't have lxd directory in /var/lib and I'm not using snapshot either. I'm using Ubuntu 19.10 for instance and other lxc commands like : lxc-attach -n, lxc-destroy ...etc don't work either. Please help me! I have a homework to submit. Thanks in advance°° PS I'm the one thanking you for this awesome structured video, thanks°°

[@justmeandopensource]

@@imena476 So lxc is the underlying library and lxd is the API layer through which we create and manage the containers. Have you installed lxd? $ sudo apt install lxd and did you initialize the lxd environment by running $ lxd init

[@imena476]

@@justmeandopensource yes sir I did so

[@justmeandopensource]

@@imena476 Okay. Were you able to launch a container successfully?

[@chinmaygokhale1321]

Is it possible to to install and run an arm Linux image using LXC on an x86 machine. If yes then I will you be able to make a tutorial for the same. Thanks in advance!!

[@justmeandopensource]

Hi Chinmay, thanks for watching this video. It won't be possible to launch an arm container in a non-arm architecture host. I tested this. $ lxc launch images:centos/7/arm64 test Creating test Error: Failed container creation: Create container: Requested architecture isn't supported by this host Thanks

[@jamallmahmoudi9481]

so usefullllllll.

[@justmeandopensource]

Hi, thanks for watching. Cheers.

[@ImbraWolf]

why is the virtual ethernet interface needed, does it even face out on the internet for people to see

[@manikandans8808]

while running this command # docker run --name mysql -e MYSQL_ROOT_PASSWORD=Zippyops@123 -d mysql it throws ERROR: mysqld failed while attempting to check config command was: "mysqld --verbose --help" mysqld: Can't read dir of '/etc/mysql/conf.d/' (OS errno 13 - Permission denied) mysqld: [ERROR] Fatal error in defaults handling. Program aborted! i used the lxd profile file that used for k8s. But when i run the same command in my bare it works fine. Can you pls figure out the problem

[@justmeandopensource]

I just tried and it worked perfectly fine. I tried the mysql latest tag and it started fine. No errors like you mentioned. But I wasn't able to access mysql from command line due to some library missing for password authentication on the lxc container. But I could use mysql:5.7 version which worked perfectly fine. I could connect to it. Check my output in the below link. pastebin.com/SuVK0TCv Thanks

[@justmeandopensource]

Hi Mani, did you get it working?

[@amrhegazy7221]

what's diff between lxc start command or lxc-start command ?

[@justmeandopensource]

Hi Amr, thanks for watching. lxc start actually talks to lxd using REST interface whereas lxc-start doesn't use lxd API layer but interacts directly using lxc libraries.

[@avimehenwal]

Is there any analogous file for LXC like docker has DOCKERFILE?

[@justmeandopensource]

Hi Avi, thanks for watching this video. I have seen few github projects for that. But I haven't tried any of them. Thanks.

[@avimehenwal]

@@justmeandopensource Thanks for your quick reply :) I have been using docker for some time and I more familiar with the tooling that comes along with docker toolchain. Just another curious question if you would like to answer it. Is there any special use-case(s) where LXC containers beats (or stands apart) from other container technology especially docker ? For me, I see provisioning LXC containers (with apps and services) could be a problem

[@justmeandopensource]

@@avimehenwal Hi, apologies for the late reply as the comment was flagged as spam and I didn't get the notification. Right, LXC and Docker have different usecases. LXC is a light-weight Linux environment that uses the host Operating systems capabilities. You can use it as a complete virtual machine. Whereas Docker is used primarily for application isolation. You package your application into container along with all the dependencies into it, so that it can run on any machine with docker runtime installed. With Docker, you run a single service inside a container. It is for packaging your application. And LXC is a complete virtual machine without hypervisor layer. What problem do you see with apps and services in LXC containers? Thanks

[@avimehenwal]

@@justmeandopensource Like I still do not know how to package it, I read there is something like snapshot and external tool like ansible could be use to provision LXC with apps and service we want, I am just not sure if there is any LXC-way of saving our images and reusing them in future

[@justmeandopensource]

@@avimehenwal Hi, see if this helps. Creating snapshot, exporting it as tarball, then importing the tarball on another server and init'ing the image. discuss.linuxcontainers.org/t/backup-the-container-and-install-it-on-another-server/463/2 Thanks