#flatcar — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #flatcar, aggregated by home.social.
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Digital Sovereignty isn't just for nations!
Now that the desktop has reached The Final Shape we turn attention to our homelabs.
Been making great progress on this, we're at v .8. This one is boring. Knuckle just installs flatcar.
But we want cloud native magic so we're building "Bluefin Server" but not sure on the name. And it'll run flatcar, and in there your magical bootc factory runs and your bluebuild just worked ootb. And the Fedora one will come with coreOS, tekton, forgejo, konflux, etc.
A place for both - if we design the homeserver and desktop as one unified WHOLE, we could do a ton more stuff. The tech is already finished.
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RE: https://mastodon.social/@sjvn/116601662233396929
Awesome to see #flatcar #linux get a commercial product. Hope to see more! Congrats @thilo and co!
Before I worked with the bootc team to get that into the @cloudnativefdn I worked with the team at MS to get flatcar into the CNCF!
It took a year (paperwork sucks). Awesome server os, I'm working on something slick for you all who wanna try it at home.
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Flatcar Container Linux: Immutable VMs for Docker Hosts I Never Log Into
https://rant.mvh.dev/flatcar-container-linux-immutable-vms-for-docker-hosts-i-never-log-into/
#selfhosted #selfhosting #flatcar #proxmox #terraform #linux
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If you’re in Prague this weekend and care about practical Linux ops, I’m doing two talks at Installfest.cz on Saturday (building A, CTU FEL, Karlovo náměstí), both in English:
15:30–15:55 (Track II) – You Don’t Need Kubernetes: Side Projects on One Linux Server
17:00–17:25 (Track III) – Flatcar Linux 101: A Hands-Free Server OS
Details:
https://pretalx.installfest.cz/installfest-2026-2025/talk/XLRXK9/https://pretalx.installfest.cz/installfest-2026-2025/talk/BBARCX/
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If you’re in Prague this weekend and care about practical Linux ops, I’m doing two talks at Installfest.cz on Saturday (building A, CTU FEL, Karlovo náměstí), both in English:
15:30–15:55 (Track II) – You Don’t Need Kubernetes: Side Projects on One Linux Server
17:00–17:25 (Track III) – Flatcar Linux 101: A Hands-Free Server OS
Details:
https://pretalx.installfest.cz/installfest-2026-2025/talk/XLRXK9/https://pretalx.installfest.cz/installfest-2026-2025/talk/BBARCX/
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For a fireside chat with creators and maintainers of #SpecialPurposeOS #Linux distributions like #Flatcar or #Kairos at #FOSDEM, please drop by our SPOS BOF Session: Today (Saturday) 5pm in K4.401.
No matter whether you're curious, a user, or a maintainer - drop by and join us!
(Also, please boost!)
https://fosdem.org/2026/schedule/event/GX3DNS-special-purpose_linux_operating_systems_meetup_bof/ -
For a fireside chat with creators and maintainers of #SpecialPurposeOS #Linux distributions like #Flatcar or #Kairos at #FOSDEM, please drop by our SPOS BOF Session: Today (Saturday) 5pm in K4.401.
No matter whether you're curious, a user, or a maintainer - drop by and join us!
(Also, please boost!)
https://fosdem.org/2026/schedule/event/GX3DNS-special-purpose_linux_operating_systems_meetup_bof/ -
For a fireside chat with creators and maintainers of #SpecialPurposeOS #Linux distributions like #Flatcar or #Kairos at #FOSDEM, please drop by our SPOS BOF Session: Today (Saturday) 5pm in K4.401.
No matter whether you're curious, a user, or a maintainer - drop by and join us!
(Also, please boost!)
https://fosdem.org/2026/schedule/event/GX3DNS-special-purpose_linux_operating_systems_meetup_bof/ -
For a fireside chat with creators and maintainers of #SpecialPurposeOS #Linux distributions like #Flatcar or #Kairos at #FOSDEM, please drop by our SPOS BOF Session: Today (Saturday) 5pm in K4.401.
No matter whether you're curious, a user, or a maintainer - drop by and join us!
(Also, please boost!)
https://fosdem.org/2026/schedule/event/GX3DNS-special-purpose_linux_operating_systems_meetup_bof/ -
For a fireside chat with creators and maintainers of #SpecialPurposeOS #Linux distributions like #Flatcar or #Kairos at #FOSDEM, please drop by our SPOS BOF Session: Today (Saturday) 5pm in K4.401.
No matter whether you're curious, a user, or a maintainer - drop by and join us!
(Also, please boost!)
https://fosdem.org/2026/schedule/event/GX3DNS-special-purpose_linux_operating_systems_meetup_bof/ -
📜 Releases in the usual place:
https://www.flatcar.org/releases/
#Flatcar #ContainerLinux #Release -
🌅 New day, new Flatcar releases!
Alpha 4515.0.0, Beta 4459.1.1, and Stable 4459.2.0 are out with Linux 6.12.54, cgroups v1 kernel config mitigations, and major security updates across the stack.
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I rarely talk about work here, but this took quite some effort of the team and fellow maintainers:
https://pixelrobots.co.uk/2025/11/flatcar-container-linux-on-aks-first-look/
Today, we add #Azure #AKS to our list of hosted #Kubernetes offers that support #Flatcar #Container #Linux. It's not the first, and it sure won't be the last. Documentation is here: https://learn.microsoft.com/en-us/azure/aks/flatcar-container-linux-for-aks
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Spent some time thinking about a #DevOps flow for agency-sized orgs working on web applications.
The idea is using #nix to pack a reproducible dev environment and build a docker image from it, which will be deployed on a container-host OS like #flatcar .
Principles:
- must be usable for small-sized projects on private infra or cloud providers
- must be development-first, so 1:1 parity between a local environment and production and no DevOps gates during deployments
- everything outside the dev env should be minimally intrusive
- OSS and lightweight sw is preferredLocally we would have a nix-shell with runtime, toolchain (dependency managers and such) and a webserver. Also obv the app's git repo.
Then we would have a *build node* that acts as a docker registry and an online dev env. A simple pipeline would:
- pull the git repo
- build the docker image with nix
- push it to the local docker registry
- run the image and serve it.
This is automatable in a number of ways, including Ansible straight from the dev's machine without external CI tools.The *prod node* would leverage Flatcar's init system to pull the latest the docker image and run it at boot, the provisioning can be done manually or via Terraform.
All testing (including security) runs in the dev environment.
Environment variables are also managed inside the application (with something like dotenvx) with appropriate secret management, keeping in mind that every build is a prod build, and all else is dev.Database and observability systems are to be considered external dedicated services. Static assets (like media files) on the prod node are stored in a volume keeping the same paths as dev's.
Basic status-based orchestration can be done in docker leveraging healthchecks. -
Okay, creating a custom unit that runs `systemctl enable podman.socket` after basic.target fixes it (I guess that supports my theory that it’s sysext-related). I’m wondering though if this is the best solution, or if I’m missing something obvious. #Flatcar #devops #homelab #selfhosting
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Trying to migrate from Fedora CoreOS to #Flatcar, but having a hard time getting the Podman-related systemd units enabled in my Butane config. In FCOS, setting `enabled` to true was sufficient. The same doesn’t seem to work with Flatcar. qemu-guest-agent.service works though. So I’m wondering if the reason might be that Podman is a sysext and therefore not available early enough? #devops #homelab #selfhosting
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Recording for my #froscon talk on shipping #kubernetes as a #systemd #sysext and painless in-place updates on #Flatcar #Linux is now available: https://media.ccc.de/v/froscon2025-3330-immutable_turtles_all_the_way_down#t=25
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Calm before the conference. If you're at #FrOSCon check out the Flatcar booth right at the Mensa, next to #KairOS and near #Fedora #CoreOS.
I have a #Kubernetes #Sysext talk on #Flatcar #container #linux at 6 tomorrow, and @tormath1 will follow up with a hands-on tutorial on Sunday at 4.
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On Sunday 17th 4:00pm, fosstodon.org/@tormath1 will run a workshop to learn how to run, build and update systemd-sysext images on image based systems. programm.froscon.org/2025/events/... #systemd #sysext #linux #flatcar #OpenSource #DevOps #FrOSCon
Workshop: Extending image base... -
On Saturday 16th 6:15pm, fromm.social/@thilo will demo Kubernetes deployment using Flatcar and systemd-sysext and how to handle the updates. programm.froscon.org/2025/events/... #systemd #sysext #linux #flatcar #OpenSource #DevOps #FrOSCon
Lecture: Immutable Turtles All... -
On Sunday 17th 4:00pm, @tormath1 will run a workshop to learn how to run, build and update systemd-sysext images on image based systems. https://programm.froscon.org/2025/events/3340.html
#systemd #sysext #linux #flatcar #OpenSource #DevOps #TechWorkshop
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On Sunday 17th 4:00pm, @tormath1 will run a workshop to learn how to run, build and update systemd-sysext images on image based systems. https://programm.froscon.org/2025/events/3340.html
#systemd #sysext #linux #flatcar #OpenSource #DevOps #TechWorkshop
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On Sunday 17th 4:00pm, @tormath1 will run a workshop to learn how to run, build and update systemd-sysext images on image based systems. https://programm.froscon.org/2025/events/3340.html
#systemd #sysext #linux #flatcar #OpenSource #DevOps #TechWorkshop
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On Sunday 17th 4:00pm, @tormath1 will run a workshop to learn how to run, build and update systemd-sysext images on image based systems. https://programm.froscon.org/2025/events/3340.html
#systemd #sysext #linux #flatcar #OpenSource #DevOps #TechWorkshop
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On Sunday 17th 4:00pm, @tormath1 will run a workshop to learn how to run, build and update systemd-sysext images on image based systems. https://programm.froscon.org/2025/events/3340.html
#systemd #sysext #linux #flatcar #OpenSource #DevOps #TechWorkshop
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On Saturday 16th 6:15pm, @thilo will demo Kubernetes deployment using Flatcar and systemd-sysext and how to handle the updates. https://programm.froscon.org/2025/events/3330.html
#systemd #sysext #linux #flatcar #OpenSource #DevOps #TechWorkshop
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On Saturday 16th 6:15pm, @thilo will demo Kubernetes deployment using Flatcar and systemd-sysext and how to handle the updates. https://programm.froscon.org/2025/events/3330.html
#systemd #sysext #linux #flatcar #OpenSource #DevOps #TechWorkshop
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On Saturday 16th 6:15pm, @thilo will demo Kubernetes deployment using Flatcar and systemd-sysext and how to handle the updates. https://programm.froscon.org/2025/events/3330.html
#systemd #sysext #linux #flatcar #OpenSource #DevOps #TechWorkshop
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On Saturday 16th 6:15pm, @thilo will demo Kubernetes deployment using Flatcar and systemd-sysext and how to handle the updates. https://programm.froscon.org/2025/events/3330.html
#systemd #sysext #linux #flatcar #OpenSource #DevOps #TechWorkshop
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On Saturday 16th 6:15pm, @thilo will demo Kubernetes deployment using Flatcar and systemd-sysext and how to handle the updates. https://programm.froscon.org/2025/events/3330.html
#systemd #sysext #linux #flatcar #OpenSource #DevOps #TechWorkshop
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Attending to @FrOSCon this year is a good opportunity to: learn about Flatcar and discuss your use-cases with some Flatcar's maintainers (at the Flatcar booth and/or during the social event). See you there!
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Sayan talking about his journey to #flatcar maintainer at #KubeconIndia
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Previously on LTT: How to run your own no-bother #tailscale server on #Flatcar.
Automatiion is here: https://github.com/jakelmg/easy-tailscale-server
Config generator: https://github.com/jakelmg/tailscale-flatcar-config-toolVideo: https://youtu.be/St-Itlk0W50?si=aKWIByLMc2w4BoXX&t=271
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They even use maintenance windows to stay up to date and automatically install new #Flatcar releases! Good stuff.
https://github.com/jakelmg/flatcar-lancache-server/blob/main/video%20version/human-config.yaml#L50
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LTT once again delivers no-nonsense, I-have-stuff-to-do-so-don't-bother-me-with-housekeeping automation based on #Flatcar #Container #Linux.
Repo here: https://github.com/jakelmg/flatcar-lancache-server
Check out the video: https://www.youtube.com/watch?v=7Lrek5XCGaI&t=1122s
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LTT once again delivers no-nonsense, I-have-stuff-to-do-so-don't-bother-me-with-housekeeping automation based on #Flatcar #Container #Linux.
Repo here: https://github.com/jakelmg/flatcar-lancache-server
Check out the video: https://www.youtube.com/watch?v=7Lrek5XCGaI&t=1122s
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LTT once again delivers no-nonsense, I-have-stuff-to-do-so-don't-bother-me-with-housekeeping automation based on #Flatcar #Container #Linux.
Repo here: https://github.com/jakelmg/flatcar-lancache-server
Check out the video: https://www.youtube.com/watch?v=7Lrek5XCGaI&t=1122s
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LTT once again delivers no-nonsense, I-have-stuff-to-do-so-don't-bother-me-with-housekeeping automation based on #Flatcar #Container #Linux.
Repo here: https://github.com/jakelmg/flatcar-lancache-server
Check out the video: https://www.youtube.com/watch?v=7Lrek5XCGaI&t=1122s
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LTT once again delivers no-nonsense, I-have-stuff-to-do-so-don't-bother-me-with-housekeeping automation based on #Flatcar #Container #Linux.
Repo here: https://github.com/jakelmg/flatcar-lancache-server
Check out the video: https://www.youtube.com/watch?v=7Lrek5XCGaI&t=1122s
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🗓️ Bug Smashing Friday is here!
Let’s kick off the first Friday of June by stomping bugs and triaging issues in the Flatcar Container Linux tracker.
Join us in cleaning up, categorizing, and closing bugs to help make Flatcar even more robust!
🔗 https://github.com/flatcar/Flatcar/discussions/1772
📹 https://meet.flatcar.org/BugSmashingDay
🐧 #Flatcar #BugTriage #OpenSource #Linux #k8s
