Aleksei Sviridkin
25d4a8c951
The cluster-wide evictionStrategy was LiveMigrate. For a VMI that is not live-migratable (a ReadWriteOnce disk, a passthrough GPU, a host device), virt-api's eviction webhook answers every eviction with 429, so a node drain retries forever and never completes. LiveMigrateIfPossible keeps live migration for every VMI that can migrate and lets the eviction through for the rest. The VM is shut down and started again according to its runStrategy. A VM whose disk is bound to the drained node stays down until the node returns. KubeVirt writes the cluster strategy into a VMI's spec when the VMI is created, so a VMI started before the upgrade keeps LiveMigrate and still blocks the drain until it is restarted once. A drain and a launcher update after a KubeVirt upgrade go through the same eviction, so the workload updater's Evict fallback shuts down non-migratable VMs started under the new strategy on every later KubeVirt upgrade, where it used to get the same 429. Evict stays anyway: for kubernetes-nodes workers, which use evictionStrategy External, that eviction marks the VMI for evacuation, CAPK drains the tenant node and deletes the VMI, and the VM starts it again on the new launcher. The test pins the method list so the fallback is not dropped to avoid the shutdowns. 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.