#uCore

2025-10-23

Finally buckled down to learn how to set up (based on ). The biggest challenge was figuring out that trying to run the LiveISO from a USB 2.0 port was causing it to timeout and drop into recovery mode.

2025-10-12

@vavakado I'm in a similar situation for my servers and have been experimenting with #ublue #uCore.

I only need Podman so i went with the ucore-minimal:stable image (Docker is also included) but ucore-hci:stable-nvidia has everything you mentioned wanting.

So far everything is running great on my test machine so i think i'm going to switch in the next week or so.

github.com/ublue-os/ucore

Freya :nb_verified: 🔜 FOSDEM 2026Venefilyn@snug.moe
2025-09-15

I has now finally deployed my homelab server. It's called rhiza and uses CoreOS-based uCore from Universal Blue. ​:nkohype:​

Already got some services up and running and I've also configured it to redirect traffic from my home assistant subdomain to the home assistant server too.
​:lappland_happy:​

Still have a few services to configure, and I kinda want a Cockpit bootc integration now instead of ostree as it doesn't fully work as it should. Oh and I should poke sssd folks about passkeys and if we can use sssd for passkey auth in Cockpit..
​:nkothink:​

#cockpit #sssd #homelab #coreos #universalblue #ucore

Screenshot of Cockpit Client app with my server rhiza connected. Left side is a sidebar with all pages, right side is the main page with Health, Usage, System information, and Configuration.

The top bar shows `venefilyn@rhiza` on the left side and on the right shows 'Administrative access', Help, and Session.
2025-07-21

Had a uncomfortably large aha moment when I realized that, based on the way #fcos / #ucore works, I don't have to tear down and rebuild the VM to update configurations on everything, but instead define my own OCI/ostree image to load all my container configuration.

I've literally been destroying and rebuilding the image every time I've wanted to make a config change, or add a new service to the homelab. :neobread_facepalm:

2025-07-19

Cert creation was actually super smooth, thanks to my gateway device being on #opnsense . Defining the CAs and leaf certs was very straightforward through the interface.

Need to figure out a way to make sure the "tear down the vm and rebuild" cycle on the #ucore host it's running on doesn't blow away the stuff on the persistent volume. I thought it behaved, but apparently not so much. Fortunately, it's currently just RSS feeds, and I can always just reset via OPML file.

2025-07-19

Thought bubble: Custom uCore as my NAS 🤔

Everything I do on my FreeBSD NAS is doable on uCore, but the main thing I have to think about is how to replicate my ISP-proof-FreeBSD-jail-using-ProtonVPN-for-torrenting setup. I could try using a VM, but I'm thinking LXC/Incus would be better.

As I recall, LXC was kind of not really straightforward to configure. If I could just edit a single configuration file for everything like I do with FreeBSD jails that would be great. Or even a modular, per-container configuration file setup.

I also should look into Cockpit as a web UI. I haven't used it in a while, so there's liable to be new features I haven't tried yet. It would be pretty cool if there was a Cockpit module for Incus/LXC containers.

#ucore #ublue #fedora #Linux #FOSS #containers #NAS #coreos

2025-05-15

I’m running out of computers to put #universalblue images onto. My laptop has been on #bluefin since I think F38, and my home server is moving to #ucore when I get some spare time (I have already practiced in a VM what I want to do there).
I’m eyeing up other computers in the house now, like my kid’s windows laptop that won’t run Win11… :D
I’m a bit of a fanboy at this stage, but I really like the direction these system are going in.
#Linux

2025-03-02

I just found a trick!

How to reinstall packages in #Fedora #Atomic desktop #downstream images like #uBlue (#Bazzite, #Bluefin, #Aurora, #uCore) or #Secureblue, that were removed in the image building process.

There is a bug in #rpmostree, that basically prevents you from reinstalling #Firefox if the builders decided to remove it.

github.com/boredsquirrel/Linux

universal-blue.discourse.group

#kinoite #silverblue #atomicdesktops #ostree #bootc

Rpm-ostree adding back firefoxBluefin with a working Fedora Firefox!
2024-08-11

Let's see how things go with my #UniversalBlue #ZFS image now.

Updated to install the #CoreOS stable kernel, along with ZFS kmod from #UCore akmods-zfs image.

Great that @jorge and friends put the work for CoreOS style bi-weekly kernel cadence, thank you very much 👍

github.com/0ranki/silverblue-z

Rae 🧑‍💻🕸️rae@kolektiva.social
2024-08-01

@bitprophet seems very similar to what @UniversalBlue is doing, especially with #Bluefin. But so far I love using Bluefin. I do also love #Debian so might try VanillaOS on another computer or VM.

But yeah still looking to experiment with a headless immutable #homelab server OS that is, first of all, easy to install, and second, easy to manage (e.g. via Cockpit). I think Universal Blue’s #uCore does a lot of that but it’s confusing to install unless I’m just an idiot (likely).

2024-07-31

Should I build a custom ucore image with Zerotier and Nomad, or should I just enjoy my existing homelab?

#universalblue #ucore #nomad #zerotier

Daniel MelzakTeamLinux01
2024-07-25

@killyourfm Let's GO! Very excited to read your articles over there again.

Bring some more knowledge to the masses.

I hope to hear you talk about my favorite OSes, the ones part of the Universal Blue project.

Daniel MelzakTeamLinux01
2024-06-29

@Linux4Everyone@fosstodon.org I was thinking of setting up a container on my server in my home to document some stuff for my home, games and random stuff.

Hopefully I can get my wife to look at it as well, maybe contribute information.

Daniel MelzakTeamLinux01
2024-05-14

If anyone was curious about making a custom partition scheme for a single disk using uCore, I wrote a very short snippit that includes the important information of the butane file.

daniel.melzaks.com/guides/ucor

Daniel MelzakTeamLinux01
2024-05-13

I am really digging atomic desktop systems. Between , Aurora-DX and , I am very happy with these systems for my desktops, laptops and .

As I only need , ssh and for my server, the `ucore-hci:stable-zfs` gets it done. It was fun learning how to make a `butane` file and serve the `ignition` file to get setup. I just need to figure out how to mirror a BtrFS for `/sysroot` and then I will be golden.

I would like to thank @jorge and the rest of the team at .

2024-01-16

We have a server-focused custom image called uCore!

It's @fedora CoreOS + extra things like Cockpit and Distrobox. Also comes with versions that have Nvidia drivers and ZFS.

Check it out! github.com/ublue-os/ucore/

#uCore #uBlue #CoreOS #FedoraCloud #Fedora #Linux #Homelab

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