myasnikovdaniil
e5bb3cda07
## What this PR does Found while checking for other places with the failure from https://github.com/cozystack/cozystack/issues/4968: data that grows with configuration is passed to a process as one argument, and Linux allows 128 KiB for that. This one is in the `kubernetes` app and there is no issue about it yet. The OIDC bootstrap Job wrote a ClusterRoleBinding for every `oidc.users` entry into its `sh -c` script, 526 bytes per user. I rendered current main with `helm template` and users like `user123@example.org`: 238 users give a 130,889 bytes script that starts, 239 give 131,415 bytes and `exec` fails with E2BIG. Then the container can't start, the post-install and post-upgrade hook fails after its retries and the HelmRelease of the tenant cluster stays unready. Schema has no limit for `oidc.users` and each person needs own entry, so a cluster shared by 240 people gets there. Now the bindings and the list of their names are rendered by the new `oidc-rbac-bindings.yaml` into a ConfigMap `<release>-oidc-bindings` that the Job mounts, so the script is 6,380 bytes for any number of users. The ConfigMap has its own 1 MiB limit, about 2,500 users at 417 bytes each. Names, labels and roles of the bindings stay the same. I compared the render of old and new chart for eight emails (ones YAML reads as a boolean or null, a number, a quote, an apostrophe, unicode and two plain) and the bindings are identical, so existing ones are updated in place and nothing is orphaned. The prune step reads the same ConfigMap. If the list is not mounted the Job stops before it deletes anything, because `grep` on a missing file exits 2, `! grep` is true and every binding of the release would be pruned. A release with no users applies nothing (`kubectl apply` fails on an empty file) and prunes all stale bindings, same as before. `hack/kubernetes-oidc-bindings.bats` renders 300 users, checks the script is under the limit without any email in it and that every user has one binding with the old name and role. Three more tests run the rendered script against a fake `kubectl` and check what it applies and deletes. The prune condition forced to true or to false passes all helm-unittest cases, so this part is tested in bats. The bug is in release-1.6 and release-1.7 as well. ### Downstream repositories I walked the trigger map against the diff (one chart template, its tests and a bats file): no package added or removed, no values, schema or default changed, no output Secret or Service renamed. - [x] No downstream repository is affected by this change - [ ] [cozystack/website](https://github.com/cozystack/website) - follow-up: - [ ] [cozystack/terraform-provider-cozystack](https://github.com/cozystack/terraform-provider-cozystack) - follow-up: - [ ] [cozystack/ansible-cozystack](https://github.com/cozystack/ansible-cozystack) - follow-up: - [ ] [cozystack/ccp](https://github.com/cozystack/ccp) - follow-up: - [ ] [cozystack/talm](https://github.com/cozystack/talm) - follow-up: - [ ] [cozystack/cozyhr](https://github.com/cozystack/cozyhr) - follow-up: - [ ] [cozystack/cozy-proxy](https://github.com/cozystack/cozy-proxy) - follow-up: - [ ] [cozystack/cozystack-telemetry-server](https://github.com/cozystack/cozystack-telemetry-server) - follow-up: - [ ] [cozystack/external-apps-example](https://github.com/cozystack/external-apps-example) - follow-up: - [ ] [cozystack/examples](https://github.com/cozystack/examples) - follow-up: - [ ] [cozystack/community](https://github.com/cozystack/community) - follow-up: ### Release note ```release-note fix(kubernetes): the OIDC bootstrap Job no longer fails to start for a tenant cluster with about 240 or more oidc.users, the bindings now come from a ConfigMap the Job mounts. ``` <!-- This is an auto-generated comment: release notes by coderabbit.ai --> <!-- coderabbit-ai-generated:v1 --> ## Summary by CodeRabbit * **New Features** * Kubernetes OIDC configuration now supports per-user role bindings, with administrator and viewer access assigned according to each user’s role. * OIDC role bindings are kept in sync with the configured user list, including removal of obsolete bindings. * Deployments with no OIDC users or with OIDC mode disabled continue to avoid creating user bindings. <!-- end of auto-generated comment: release notes by coderabbit.ai -->
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 to build your own platform
You can install only the Cozystack components you need on an existing Kubernetes cluster
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.