b22263d835
This implements the replacement of klog output to different files per level with optionally splitting JSON output into two streams: one for info messages on stdout, one for error messages on stderr. The info messages can get buffered to increase performance. Because stdout and stderr might be merged by the consumer, the info stream gets flushed before writing an error, to ensure that the order of messages is preserved. This also ensures that the following code pattern doesn't leak info messages: klog.ErrorS(err, ...) os.Exit(1) Commands explicitly have to flush before exiting via logs.FlushLogs. Most already do. But buffered info messages can still get lost during an unexpected program termination, therefore buffering is off by default. The new options get added to the v1alpha1 LoggingConfiguration with new command line flags. Because it is an alpha field, changing it inside the v1beta kubelet config should be okay as long as the fields are clearly marked as alpha. |
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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.