ff849fe8b6
The effective layering of ResponseWriters is today, from outside to inside, httplog(timeout(audit(metrics(original)))). From6e3fd91e1a, calls to http.Error in the apiserver's root healthz handler use an unwrapped ResponseWriter -- effectively timeout(audit(metrics(original))) -- to avoid logging stack traces for those requests. From0d50c969c5, the same call to http.Error receives a completely-unwrapped ResponseWriter. This has the effect of bypassing not only the httplog wrapper, but also timeout, audit, and metrics. The timeout wrapper defends against the (disallowed) use of underyling ResponseWriter after the completion of its request's ServeHTTP call. Since that defensive behavior is being bypassed, it's possible for the root healthz handler to panic when health probes time out. Instead of continuing to use a wrapper-aware means of disabling stack traces, this commit adds a new function to httplog that allows customization of the stack trace logging predicate on a per-request basis.
Kubernetes (K8s)
Kubernetes, also known as K8s, 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 K8s
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 K8s
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.