543f29be4e
kubelet.DownloadConfig is an old utility function which takes a client set and a kubelet version, uses them to fetch the kubelet component config from a config map, and places it in a local file. This function is simple to use, but it is dangerous and unnecessary. Practically, in all cases the kubelet configuration is present locally and does not need to be fetched from a config map on the cluster (it just needs to be stored in a file). Furthermore, kubelet.DownloadConfig does not use the kubeadm component configs module in any way. Hence, a kubelet configuration fetched using it may not be patched, validated, or otherwise, processed in any way by kubeadm other than piping it to a file. This patch replaces all but a single kubelet.DownloadConfig invocation with equivalents that get the local copy of the kubelet component config and just store it in a file. The sole remaining invocation covers the `kubeadm upgrade node --kubelet-version` case. In addition to that, a possible panic is fixed in kubelet.DownloadConfig and it now takes the kubelet version parameter as string. Signed-off-by: Rostislav M. Georgiev <rostislavg@vmware.com>
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.