Andrey Kolkov
56e10b1580
## What breaks today Upgrading any existing cluster to a build that carries the new MongoDB backup driver wedges the `backupstrategy-controller` HelmRelease permanently, with `resource mapping not found for name: "cozy-default-mongodb" ... no matches for kind "MongoDB" in version "strategy.backups.cozystack.io/v1alpha1"; ensure CRDs are installed first`. This chart ships its `strategy.backups.cozystack.io` CRDs as ordinary templates, and Helm resolves every document in a release manifest through the cluster's RESTMapper in `Build()` **before** it applies any of them. A Strategy CR whose CRD is not served yet therefore fails `Build()`, so the release applies **zero** objects — including the CRD that would have made the mapping resolve — and every retry renders the same manifest. Nothing recovers on its own. ## Why the gate that exists does not cover it The chart already knows this trap: it is why every default Strategy gates on the bucket name. That gate covers the **first install** of a fresh cluster, where nothing is resolvable yet and no Strategy renders at all. It cannot cover shipping a **new kind** to a chart that is already installed — there the bucket name resolved releases ago, so the first upgraded revision renders the new CRD and the new Strategy CR together and wedges. ## The fix Gate the CR on its CRD actually being served, through a `crdEstablished` helper. The helper asks about the **CRD object** rather than listing the custom kind, because `lookup` on a kind the apiserver does not serve is a render *error*, not an empty result, which would trade this wedge for a different permanent failure; `apiextensions.k8s.io/v1` is always served, so that lookup can only answer yes or no. It requires `Established=True` rather than mere existence, because that is when the kind enters the RESTMapper. Convergence afterwards is the mechanism the bucket gate already relies on, and is **not** the HelmRelease interval: once the CRD is served, the controller's `DefaultObjectsGate` sees the kind mapped and the CR absent and forces a real Helm upgrade whose render includes it. Kinds that do not map at all are skipped there (`meta.IsNoMatchError`), which is what stops the gate forcing upgrades against a render that cannot yet produce the object. `bucketNameOverride` short-circuits the CRD lookup for the same reason it short-circuits the bucket lookup: it marks an offline render — `helm template`, a CI diff, a unit test — where there is no apiserver to ask. Live deploys go through Flux and never set it. ## How it was found The release upgrade E2E lane in #3276, on the `v1.6.2 → main` path. `mongodbs.strategy.backups.cozystack.io` is the only definition added to this chart since the tag, so this is reachable only by upgrading an existing install — no install-only suite can see it. ## Verification Reproduced and fixed against a live cluster that happens to be in exactly the pre-upgrade state (the seven older strategy CRDs present, `mongodbs` absent). `helm template --dry-run=server` of main's chart fails with the error above and produces zero documents; the same render with this change succeeds with 21 documents and the Strategy correctly withheld. The helper's two branches were probed the same way against that cluster: a served CRD answers `true`, an absent one answers empty. The new unit case pins the gate offline through the external-S3 path, where the bucket name resolves without the offline override so that only the CRD gate can hold the CR back. Removing the gate turns exactly that case red; the suite is 19/19 green with it. ```release-note Fixed a permanent failure of the backupstrategy-controller release when upgrading a cluster to a version that adds a new backup-strategy kind: the default MongoDB Strategy is now withheld until its CRD is served, instead of failing the whole release with "no matches for kind". ``` <!-- This is an auto-generated comment: release notes by coderabbit.ai --> ## Summary by CodeRabbit * **Bug Fixes** * Improved backup strategy rendering during upgrades by waiting until the required MongoDB resource definition is available. * Preserved offline rendering when an explicit bucket name is provided. * Prevented invalid default strategies from being generated when the required resource definition is unavailable. * **Tests** * Added coverage for offline rendering and unavailable resource-definition scenarios. <!-- end of auto-generated comment: release notes by coderabbit.ai -->
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 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 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.