9b23f22472
This change removes the audience logic from the oidc authenticator and collapses it onto the same logic used by other audience unaware authenticators. oidc is audience unaware in the sense that it does not know or understand the API server's audience. As before, the authenticator will continue to check that the token audience matches the configured client ID. The reasoning for this simplification is: 1. The previous code tries to make the client ID on the oidc token a valid audience. But by not returning any audience, the token is not valid when used via token review on a server that is configured to honor audiences (the token works against the Kube API because the audience check is skipped). 2. It is unclear what functionality would be gained by allowing token review to check the client ID as a valid audience. It could serve as a proxy to know that the token was honored by the oidc authenticator, but that does not seem like a valid use case. 3. It has never been possible to use the client ID as an audience with token review as it would have always failed the audience intersection check. Thus this change is backwards compatible. It is strange that the oidc authenticator would be considered audience unaware when oidc tokens have an audience claim, but from the perspective of the Kube API (and for backwards compatibility), these tokens are only valid for the API server's audience. This change seems to be the least magical and most consistent way to honor backwards compatibility and to allow oidc tokens to be used via token review when audience support in enabled. Signed-off-by: Monis Khan <mok@vmware.com> |
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Kubernetes
Kubernetes is an open source system for managing containerized applications across multiple hosts. It provides basic mechanisms for deployment, maintenance, and scaling of applications.
Kubernetes builds upon a decade and a half of experience at Google running production workloads at scale using a system called Borg, combined with best-of-breed ideas and practices from the community.
Kubernetes is hosted by the Cloud Native Computing Foundation (CNCF). If your company wants to help shape the evolution of technologies that are container-packaged, dynamically scheduled, and microservices-oriented, consider joining the CNCF. For details about who's involved and how Kubernetes plays a role, read the CNCF announcement.
To start using Kubernetes
See our documentation on kubernetes.io.
Try our interactive tutorial.
Take a free course on Scalable Microservices with Kubernetes.
To use Kubernetes code as a library in other applications, see the list of published components.
Use of the k8s.io/kubernetes module or k8s.io/kubernetes/... packages as libraries is not supported.
To start developing Kubernetes
The community repository hosts all information about building Kubernetes from source, how to contribute code and documentation, who to contact about what, etc.
If you want to build Kubernetes right away there are two options:
You have a working Go environment.
mkdir -p $GOPATH/src/k8s.io
cd $GOPATH/src/k8s.io
git clone https://github.com/kubernetes/kubernetes
cd kubernetes
make
You have a working Docker environment.
git clone https://github.com/kubernetes/kubernetes
cd kubernetes
make quick-release
For the full story, head over to the developer's documentation.
Support
If you need support, start with the troubleshooting guide, and work your way through the process that we've outlined.
That said, if you have questions, reach out to us one way or another.