Aleksei Sviridkin
fd8ccb2fcb
Dropping the HotplugVolumes gate lets virt-controller rebuild each running VMI's hotplug volumes from VM.spec, and it removes every hotpluggable VMI volume the VM spec does not list. kubevirt-csi attached tenant volumes at the VMI level until mid-2025 and live migration carries such a VMI across KubeVirt updates, so a tenant node that was never recreated can still hold a mounted disk only its VMI knows about; the first reconcile after the upgrade would unplug it. Migration 59 writes each such volume and its disk into the VM template as they are on the VMI, before the upgrade re-points cozystack-packages and so before the KubeVirt CR and the kubevirt-csi flag change. Hotplug volume changes are a valid live update, so no VM needs a restart. An ephemeral hotplug a user made at the VMI level, such as virtctl addvolume without --persist, has the same shape, because virt-api gives every VMI-level addvolume that shape. It is copied too and becomes permanent: leaving it out would not keep it ephemeral, since the first reconcile would unplug it. Only Running VMIs are considered, matching virt-controller, which reconciles no other; a stopped VM's next start builds its VMI from the VM spec, so its VMI-only volumes are not resurrected. Only the variants with migrations enabled run it. The default variant renders no migration hook, so a cluster there that installed KubeVirt by hand has to check for such volumes itself before upgrading. Assisted-by: LLM Signed-off-by: Aleksei Sviridkin <f@lex.la>
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
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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 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.