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Automatic merge from submit-queue. 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>. unpack dynamic kubelet config payloads to files This PR unpacks the downloaded ConfigMap to a set of files on the node. This enables other config files to ride alongside the KubeletConfiguration, and the KubeletConfiguration to refer to these cohabitants with relative paths. This PR also stops storing dynamic config metadata (e.g. current, last-known-good config records) in the same directory as config checkpoints. Instead, it splits the storage into `meta` and `checkpoints` dirs. The current store dir structure is as follows: ``` - dir named by --dynamic-config-dir (root for managing dynamic config) | - meta (dir for metadata, e.g. which config source is currently assigned, last-known-good) | - current (a serialized v1 NodeConfigSource object, indicating the assigned config) | - last-known-good (a serialized v1 NodeConfigSource object, indicating the last-known-good config) | - checkpoints (dir for config checkpoints) | - uid1 (dir for unpacked config, identified by uid1) | - file1 | - file2 | - ... | - uid2 | - ... ``` There are some likely changes to the above structure before dynamic config goes beta, such as renaming "current" to "assigned" for clarity, and extending the checkpoint identifier to include a resource version, as part of resolving #61643. ```release-note NONE ``` /cc @luxas @smarterclayton |
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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.