Custom LXC container recipe

[DynFi User]

Hello,

I would like to build a custom LXC container and use it as a template (and be able to use it as any already existing template (like ubuntu 22, or debian…)), we need to add couple of customized settings into this Master template.

Then we will use this template to setup customer's environment and rapidly replicate the template to create new instance.

Is there a clear guideline / explanation on how to setup this template ?


Thx.

 

[fabian]

a template is just the rootfs as tar.gz/xz/..

for our Debian-based templates we use "DAB": https://git.proxmox.com/?p=dab.git;a=summary , but PVE doesn't really care how you create the templates

 

[DynFi User]

Ok, thanks for the reply.

What about distrobuilder >> https://linuxcontainers.org/distrobuilder/introduction/
Do you advise to use it or not ?

 

[DynFi User]

The README in this dab project is… minimalist :

➜  dab git:(master) cat README
TODO

 

[fabian]

Ok, thanks for the reply.

What about distrobuilder >> https://linuxcontainers.org/distrobuilder/introduction/
Do you advise to use it or not ?

it doesn't really matter which tool you use, you'll have to test the resulting templates anyway. distrobuilder should be fine as well, modulo issues affecting certain distro/version combinations that might require fixups.

 

[Dartypier]

Another method to create a custom LXC container template is well explained in the second part of this video: https://youtu.be/hxmXOamsuIg?si=UrEtuLf5y4hSmDlU&t=307

Basically, you can start with a proxmox lxc prebuilt container templates. Then you can create a container based on those templates and customize it. When you finished do your customizations, you can execute the command vzdump that creates a backup of the container and save it to /var/lib/vz/template/cache/ that is the directory where the proxmox lxc templates are stored. If you want you can rename the created file. Now you'll see the new customized template you created in the template section in the Proxmox dashboard and you can use it as a template for your new containers.

Also exaplained here: https://forum.proxmox.com/threads/customize-a-lxc-template.23461/post-145049