Automatic merge from submit-queue (batch tested with PRs 63049, 59731). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>. Add instructions on how to debug a crashed pod When I was using `kubeadm init`, I ran into an issue where I had passed an invalid flag through the kubeadm config file. The flag was being passed into apiserver and preventing it from launching with a "unknown flag" error. The flag in question is (other flags elided for clarity): ``` admission-control: ...,GenericAdmissionWebhook,... ``` Since this prevented the apiserver from coming up, the setup timed out and gave me the error message I just modified. It would be better if the config was vetted more thoroughly, but I think documenting the backup strategy for viewing logs in case of failure is also valuable. **What this PR does / why we need it**: This PR extends an error message in kubeadm to make it clear a potential step forward for new cluster users. **Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*: Fixes #59731 **Special notes for your reviewer**: **Release note**: ```release-note NONE ``` |
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WORKSPACE |
Kubernetes

Kubernetes is an open source system for managing containerized applications across multiple hosts; providing 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 you are a company that 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 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.
$ go get -d k8s.io/kubernetes
$ cd $GOPATH/src/k8s.io/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.