Minimal Ubuntu, on public clouds

[Rares]

Hi all,

Did somebody test the new Minimal Ubuntu? Do you have an LXC template for it? The docker image of Minimal Ubuntu is only 29Mb big.

You can read more https://blog.ubuntu.com/2018/07/09/minimal-ubuntu-released
and the images are found here: http://cloud-images.ubuntu.com/minimal/releases/

Thanks,
Rares

 

[Rares]

I come back with more info.

You can install the LXC Ubuntu 16.04 like this:

cd /var/lib/vz/template/cache
wget http://cloud-images.ubuntu.com/minimal/releases/xenial/release/ubuntu-16.04-minimal-cloudimg-amd64-root.tar.gz
mv ./ubuntu-16.04-minimal-cloudimg-amd64-root.tar.gz ./ubuntu-16.04-minimal_16.04-1_amd64.tar.gz

As a general info, if I do a 'df -h' in minimal vs standard ubuntu I get: 219Mb used in minimal vs 335Mb in standard. Debian 9 standard is 338Mb.

I don't know how to generate the 18.04 image because there is no root.tar.gz file for it.

Rares

 

[dietmar]

Anyways, removing arbitrary content does not make sense for fully functional system containers ...

 

[BlueLineSwinger]

I've been making LXC templates for Proxmox based off of Ubuntu Base. After adding in systemd (some kind of init is needed) and a couple other base packages the template's tarball comes in at ~36 MB. Expanded, this container takes ~155 MB of disk space. Running at idle, only a few MB RAM and virtually no CPU are taken.

LXC 3.0's distrobuilder is apparently able to create templates based on Ubuntu Base, but I've not tried it yet (mainly because I can't seem to find it anywhere in the Ubuntu repos).

 

[luison]

Sorry for updating this old thread.
Wondering if this method (just renaming) is still valid for Ubuntu 20 minimal LXD found at http://cloud-images.ubuntu.com/minimal/releases/focal/ or any other recommended source to create a minimal Ubuntu 20 container. thanks.