Yan Bondarenko
20545d00a5
Without a global section HAProxy 3.4 sizes itself from the node. maxconn comes from the nofile limit, cut to the built-in fd-hard-limit of 1048576, so about 524k, and the thread count is the number of CPUs the process may run on, whatever the CPU limit says. With one thread that alone idles at about 85 MiB, and every thread adds about 0.6 MiB, so a t1.nano replica with its 128Mi limit runs on a small node and is OOMKilled at startup on a node with many CPUs. fd-hard-limit is now 32 per MiB of the memory limit, from which HAProxy derives about 16 connections per MiB, 2035 for the t1.nano defaults. That leaves 64 KiB per connection against the roughly 35 KiB HAProxy budgets per connection itself when it is given a memory limit with -m, and the rest covers the process and the kernel socket buffers charged to the same cgroup. It caps the derived value instead of setting maxconn, because an explicit maxconn above half the hard nofile limit stops HAProxy at startup (strict-limits is on by default), while fd-hard-limit still follows a lower system limit. thread-hard-limit is the CPU limit rounded up, at least 1. It only caps the detected thread count, so a node with fewer CPUs is not forced to run more threads than it has. Assisted-by: LLM Signed-off-by: Yan Bondarenko <202671653+yankawai@users.noreply.github.com>
Cozystack
Cozystack is a free and open-source platform and framework for building clouds.
Cozystack is a CNCF Sandbox 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
-
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 to build your own platform
You can install only the Cozystack components you need on an existing Kubernetes cluster
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 are welcome to take on the fix yourself. 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 us in #cozystack, on either CNCF Slack (get an invite) or Kubernetes Slack (get an invite), in our Telegram group, and at our community meetings. Add them to your Google Calendar or iCal for convenience.
Project documents
| Document | What it covers |
|---|---|
| Governance | How decisions are made and who makes them |
| Contributor Ladder | How to grow from contributor to maintainer |
| Maintainers | Who maintains the project |
| Code of Conduct | What we expect of each other |
| Security Policy | Reporting a vulnerability, and which releases get fixes |
| Adopters | Who runs Cozystack in production |
| Roadmap | Where the project is going |
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.