Annotate storageClass as immutable across every stateful app whose chart exposes one — clickhouse, foundationdb, harbor, http-cache, kafka (Kafka + ZooKeeper), kubernetes (top-level only), mariadb, mongodb, nats, openbao, opensearch, postgres, qdrant, rabbitmq, redis, vm-disk. Without coverage across the catalogue the UI would render storageClass read-only on some apps and editable on others — a worse mental model than uniform behaviour. The annotation lands at the schema layer (CEL XValidation rule 'self == oldSelf' on values.schema.json / types.go / embedded openAPISchema in cozyrds/<app>.yaml). The cozystack aggregated apiserver does not yet evaluate CEL on application-backed resources; that is tracked at cozystack/cozystack#2657. The UI (cozystack/cozystack-ui#6) consumes the marker today. The PVC-pinning argument is identical for every chart: Kubernetes fixes a PVC's storageClassName at creation time, so editing this field on an existing resource never migrated data. The schema annotation makes that contract explicit. kubernetes.nodeGroups[name].storageClass is intentionally NOT annotated: the field is optional and undefaulted, so a strict 'self == oldSelf' rule would block any future attempt to set it on an existing node group. A richer ratcheting form is needed there — see docs/storage-immutability.md. A refactor in pkg/registry/apps/application/rest.go extracts the inline schema-build path into buildSpecSchema so it can be unit-tested. Three regression tests in rest_spec_schema_test.go pin the contract that x-kubernetes-validations survives the v1->internal->structural conversion (loaded from the actual MariaDB ApplicationDefinition fixture on disk, not a hand-edited mock). Each per-app README gains a one-line blockquote pointing to a new docs/storage-immutability.md that explains the contract and which consumers enforce it today. Requires cozystack/cozyvalues-gen with @immutable support — bump the pre-commit pin in .github/workflows/pre-commit.yml once the release exists. Assisted-By: Claude <noreply@anthropic.com> Signed-off-by: Aleksei Sviridkin <f@lex.la>
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 Feature Requests please use the Discussion's Feature Request section.
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.
