docs
Flatcar
docs | Flatcar | |
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2 | 20 | |
884 | 635 | |
- | 2.0% | |
10.0 | 7.5 | |
almost 4 years ago | 24 days ago | |
Shell | Python | |
Apache License 2.0 | Apache License 2.0 |
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docs
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Flatcar Container Linux
ublue is based off of fedora and rpm-ostree, which is what "CoreOS" is today.
What happened was old school CoreOS was A/B partition based: https://github.com/coreos/docs/blob/master/os/sdk-disk-parti...
My memory is hazy but here's how I remember it: After Red Hat acquired CoreOS they rebased the entire thing around rpm-ostree, which is the CoreOS people know today: https://coreos.github.io/rpm-ostree/
At the time there was some anxiety in the community as to what would happen, as there was no direct upgrade path from old CoreOS to new CoreOS. Theoretically if we all believed the kool-aid we were drinking it's just a redeploy, no pets!
Kinvolk came along, forked it, and made Flatcar Linux, which kept the A/B partitioning system, and more crucially, let you just change a config file and all your old CoreOS nodes would just move to Flatcar and then you were good to go. So now if you wanted to stay on the system you were comfortable with you could just use Flatcar. If the composability of rpm-ostree attracted you then new CoreOS have you covered. Red Hat deserves a hat tip here because in their documentation/blog they explicitly mentioned Flatcar as an option for people who wanted to stick with what they know, which I thought was cool and how I discovered it!
Later on Microsoft acquired Kinvolk and and then people raised eyebrows. I have not checked in a while but the folks involved continued to do their thing and run it like a good OSS project, hold public meetings, all that stuff.
I use both and they're both high quality.
- How to change SSH port in new ubuntu version? (Tried Many times not working)
Flatcar
- Linux fu: getting started with systemd
- Bottlerocket – Minimal, immutable Linux OS with verified boot
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Wolfi: A community Linux OS designed for the container and cloud-native era
Sounds like you're looking for the CoreOS Linux successor FlatCar https://www.flatcar.org/
It's actually based on some ChromeOS update tools under the hood but is a regular Linux distro, just super minimal and designed to run containers.
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Flatcar Container Linux
I guess if you found my comment to be "comically hyperbolic" then replying to mine with a "comically reductionist" is fair game
So, anyway, I actually did dig up a concrete example of my experience with it, and I cannot link to the "Additional information" section but that is both why I think the thing was a mess and also why the Miroservices YT joke resonated: https://github.com/flatcar/Flatcar/issues/220
I think the CoreOS boot strategy was decomposed into a bunch of different executables, each responsible for doing their own little slice of the world. Maybe it drew inspiration from systemd in that way. But, just like my real life experience with microservices, it requires keeping a bunch of different projects and their upgrade paths in ones head, knowing their disparate config formats, and when one of them inevitably has a bug, understanding how to troubleshoot what went wrong with the system as a whole
And, again in trying to be reasonable in this discussion[1] I do also understand why one would opt for the data URI, given how much of the rest of Ignition loads content from URLs. I don't believe cloud-init has that remote content paradigm baked into in nearly the same way, so I hear you about that.
And yes, my belief is that JSON is a data-exchange format from _computer to computer_ and making people write them is a poor DX choice, IN MY OPINION. And, to reiterate, I know that CoreOS's perspective is that it is a computer-to-computer transmission from the transpiler-project-o-the-day to the Ignition binary, but that is predicated on one having access to that transpiler binary in all cases, which is quite different from the problem that cloud-init is trying to solve
fn-1: I'm sorry you got hurt by my "tire fire" outburst, and that evidently derailed this whole interaction, but it was my experience
- An overview of single-purpose Linux distributions
- Linux Distro for Running Docker Containers in VM - Ubuntu, Alpine, or...?
What are some alternatives?
coreroller - CoreRoller is a set of tools to control and monitor the rollout of your updates.
bottlerocket - An operating system designed for hosting containers
ostree - Operating system and container binary deployment and upgrades
harvester - Open source hyperconverged infrastructure (HCI) software
fedora-coreos-tracker - Issue tracker for Fedora CoreOS
talos - Talos Linux is a modern Linux distribution built for Kubernetes.
Flatcar - Flatcar project repository for issue tracking, project documentation, etc. [Moved to: https://github.com/flatcar/Flatcar]
typhoon - Minimal and free Kubernetes distribution with Terraform
elemental-toolkit - :snowflake: The toolkit to build, ship and maintain cloud-init driven Linux derivatives based on container images
inspektor-gadget - The eBPF tool and systems inspection framework for Kubernetes, containers and Linux hosts.
headlamp - A Kubernetes web UI that is fully-featured, user-friendly and extensible
racker - rack provisioning utility for Kinvolk projects