Alexey Artamonov
710cdd18bb
Addresses the branch review on the ZK->KRaft migration path. CRITICAL — broker node pool adoption. Strimzi derives broker/PVC names as <cluster>-<pool>-<id>; a pre-node-pool ZooKeeper cluster has brokers <cluster>-kafka-N, so the adopting broker pool must be named exactly "kafka" or the operator provisions fresh empty brokers and orphans the tenant's data. A new kafka.brokerPoolName helper resolves the broker pool to "kafka" for an existing (migrating) cluster and keeps the release-scoped "<release>-broker" for fresh installs, so multiple Kafka instances still coexist in one namespace. The migration hook creates the pool as "kafka" and fails closed if a "kafka" pool already belongs to another cluster (node pool names are namespace-unique, so in-place migration of co-namespaced ZK clusters is unsupported). Wired through kafkanodepools.yaml, workloadmonitor.yaml and the hook. MAJOR — migration robustness. - Raise the HelmRelease timeout: the migration Job can run tens of minutes but the release timeout defaults to 10m, so helm-controller aborted and thrashed the pre-upgrade hook. Add release.cozystack.io/helm-install-timeout=45m on the kafka ApplicationDefinition, above the Job's activeDeadlineSeconds (2400s). - Idempotent migration: do not re-issue kraft=migration once the cluster is past the ZooKeeper phase (an invalid backward transition Strimzi rejects on retry). - Fail closed on the decision gates: distinguish a genuine NotFound (skip) from any other kubectl error (abort), and never treat an empty kafkaMetadataState on an existing CR as "migrated". MINOR — version downgrade documented as unsupported; integer (not lexical) compare in the version gate; deleteClaim/PVC-retention and the one-per-namespace migration limitation documented in the README; docs/storage-immutability.md updated for KRaft. Tests — helm-unittest coverage for the broker pool name, the hook guards and the idempotent/fail-closed logic; a bats check for the helm-install-timeout budget ordering; and a Chainsaw ZK->KRaft migration suite that seeds a ZooKeeper cluster, drives the migration, and asserts the original broker PVC survives (not recreated) and the cluster reaches KRaft. The migration sequence and the Chainsaw assertions were validated against a live cluster. Signed-off-by: Alexey Artamonov <aleksei.artamonov@aenix.io>
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 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.
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Versioning adheres to the Semantic Versioning principles.
A full list of the available releases is available in the GitHub repository's Release section.
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Contributions are highly appreciated and very welcomed!
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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.
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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.
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