Myasnikov Daniil
ca7d2b0182
Add docs/operations/system-memory-limits.md, recording why system components carry memory limits. That reasoning is not recoverable from the values themselves, and is exactly the kind of thing a well-meaning later change removes as redundant. The Talos userspace OOM handler (v1.12+, enabled by default) selects its victim by ranking cgroups that lack memory.max. Three consequences are each easy to get wrong on their own: only a limit grants immunity, since a request merely moves BestEffort to Burstable and under strictCgroupClassOrdering that means "killed second"; every container in the pod needs one, init containers included, because kubelet sets pod-level memory.max only when all of them have it; and PriorityClass, system-node-critical included, has no bearing on it whatsoever, because the handler walks cgroupfs and holds no Kubernetes client. That last one is the trap, since setting a priority looks like a fix. The page also covers the two installer knobs and the constraint that makes them dangerous to lower (a defaulted limit below a container's own request fails admission), how to confirm a pod cgroup really carries memory.max rather than trusting the QoS class, what is deliberately left uncovered, and how to relax the global-PSI backstop clause of the trigger on a cluster that trips it persistently. Every Talos claim is checked against the siderolabs/talos v1.13.6 tag, which is the version packages/core/talos currently ships, and every Cozystack claim against the tree. Ordering: this documents behaviour introduced by the system-namespace LimitRange and the node-DaemonSet resource changes, so it should not merge ahead of them. Signed-off-by: Myasnikov Daniil <myasnikovdaniil2001@gmail.com>
Cozystack
Cozystack is a free platform and framework for building clouds.
Cozystack is a CNCF Sandbox Level Project that was originally built and sponsored by Ænix.
With Cozystack, you can transform a bunch of servers into an intelligent system with a simple REST API for spawning Kubernetes clusters, Database-as-a-Service, virtual machines, load balancers, HTTP caching services, and other services with ease.
Use Cozystack to build your own cloud or provide a cost-effective development environment.
Use-Cases
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Using Cozystack to build a public cloud
You can use Cozystack as a backend for a public cloud -
Using Cozystack to build a private cloud
You can use Cozystack as a platform to build a private cloud powered by Infrastructure-as-Code approach -
Using Cozystack as a Kubernetes distribution
You can use Cozystack as a Kubernetes distribution for Bare Metal
Documentation
The documentation is located on the cozystack.io website.
Read the Getting Started section for a quick start.
If you encounter any difficulties, start with the troubleshooting guide and work your way through the process that we've outlined.
Versioning
Versioning adheres to the Semantic Versioning principles.
A full list of the available releases is available in the GitHub repository's Release section.
Contributions
Contributions are highly appreciated and very welcomed!
In case of bugs, please check if the issue has already been opened by checking the GitHub Issues section. If it isn't, you can open a new one. A detailed report will help us replicate it, assess it, and work on a fix.
You can express your intention to on the fix on your own. Commits are used to generate the changelog, and their author will be referenced in it.
If you have a concrete feature request, open an issue. For a cross-cutting or architectural change, open a design proposal in the community repo. For questions or early ideas, use GitHub Discussions. See CONTRIBUTING.md for the full routing.
Community
You are welcome to join our Telegram group and come to our weekly community meetings. Add them to your Google Calendar or iCal for convenience.
License
Cozystack is licensed under Apache 2.0.
The code is provided as-is with no warranties.
Commercial Support
A list of companies providing commercial support for this project can be found on official site.