617821eb39
Automatic merge from submit-queue (batch tested with PRs 56497, 56500, 55018, 56544, 56425). 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 brackets around IPv6 kube-dns liveness probe addrs **What this PR does / why we need it**: Previously, when an IPv6-only Kubernetes cluster was instantiated via 'kubeadm init ...', the liveness probes that were configured by kubeadm for kube-dns currently use IP:port strings of "::1:53" and "::1:10053". These IP:port strings should instead include brackets around the ::1 IPv6 loopback address, e.g. "[::1]:53" and "[::1]:10053". This change adds the necessary brackets around the ::1 IPv6 loopback address. Without this change, the kube-dns sidecar container interprets the bracket-less strings as IPv4 IP:port strings that have too many colons, and the kube-dns pod is restarted about once every 2 minutes. **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 #56543 /area ipv6 /sig network **Special notes for your reviewer**: **Release note**: ```release-note NONE ``` |
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README.md
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
If you are less impatient, 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.