698ac55852
Automatic merge from submit-queue (batch tested with PRs 64174, 64187, 64216, 63265, 64223). 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>. kubeadm: Improve the kubelet default configuration security-wise **What this PR does / why we need it**: - Disables the readonly port for the kubelets in the cluster - Enables delegated SA token authentication for the secure kubelet port (GCE also did this ref: https://github.com/kubernetes/kubernetes/pull/58178) - Follows up https://github.com/kubernetes/kubernetes/pull/63912 to move the last flag from the system dropin to the ComponentConfig **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 https://github.com/kubernetes/kubeadm/issues/732 Fixes https://github.com/kubernetes/kubeadm/issues/650 Replaces https://github.com/kubernetes/kubernetes/pull/57997 **Special notes for your reviewer**: In order to make sure this actually works, or that clusters actually are secure, we're adding e2e tests for this: https://github.com/kubernetes/kubeadm/issues/838 & https://github.com/kubernetes/kubernetes/pull/64140 Depends on https://github.com/kubernetes/kubernetes/pull/63912 **Release note**: ```release-note [action required] kubeadm: kubelets in kubeadm clusters now disable the readonly port (10255). If you're relying on unauthenticated access to the readonly port, please switch to using the secure port (10250). Instead, you can now use ServiceAccount tokens when talking to the secure port, which will make it easier to get access to e.g. the `/metrics` endpoint of the kubelet securely. ``` @kubernetes/sig-cluster-lifecycle-pr-reviews @kubernetes/sig-auth-pr-reviews FYI |
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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.
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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 $GOPATH/src/k8s.io/kubernetes
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$ make quick-release
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