b2f19b0d0d
Automatic merge from submit-queue (batch tested with PRs 58784, 62057, 62621, 62652, 62656). 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>. Update docker run flags for containized kubelet in hack/local-up-cluster.sh **What this PR does / why we need it**: I'm working on https://github.com/kubernetes/kubernetes/issues/61741, and found `docker run` flags in `hack/local-up-cluster.sh` for kubelet container is too old. - /var/lib/docker should be mount read-write, because kubelet needs to update /etc/resolv.conf file in container, see #29378 - /var/lib/kubelet should be mount shared, because mountpoints under this directory must be propagated to other containers - `--pid=host` is needed to run `nsenter --mount=/rootfs/proc/1/ns/mnt -- /usr/bin/systemd-run --scope` correctly (don't know exact reason, but with `--pid=host`, it works) - configure cluster dns for kubelet running in a container - should propagate sub-mounts of / to kubelet for local volume With this fix, we can start a local cluster with containerized kubelet. ``` # pull or build a hyperkube image first docker tag k8s.gcr.io/hyperkube-amd64:<tag> k8s.gcr.io/kubelet:latest export DOCKERIZE_KUBELET=y ./hack/local-up-cluster.sh ``` **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 # **Special notes for your reviewer**: refer to: https://github.com/kubernetes/kubernetes-anywhere/blob/master/phase2/ignition/vanilla/kubelet.service. **Release note**: ```release-note NONE ``` |
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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.
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.