The Kubernetes documentation
This repository contains the assets required to build the Kubernetes website and documentation. We're glad that you want to contribute!
Using this repository
You can run the website locally using Hugo (Extended version), or you can run it in a container runtime. We strongly recommend using the container runtime, as it gives deployment consistency with the live website.
To use this repository, you need the following installed locally:
Before you start, install the dependencies. Clone the repository and navigate to the directory:
git clone https://github.com/kubernetes/website.git cd website
The Kubernetes website uses the Docsy Hugo theme. Even if you plan to run the website in a container, we strongly recommend pulling in the submodule and other development dependencies by running the following:
# pull in the Docsy submodule git submodule update --init --recursive --depth 1
Running the website using a container
To build the site in a container, run the following to build the container image and run it:
make container-image make container-serve
If you see errors, it probably means that the hugo container did not have enough computing resources available. To solve it, increase the amount of allowed CPU and memory usage for Docker on your machine (MacOSX and Windows).
Open up your browser to http://localhost:1313 to view the website. As you make changes to the source files, Hugo updates the website and forces a browser refresh.
Running the website locally using Hugo
Make sure to install the Hugo extended version specified by the
HUGO_VERSION environment variable in the
To build and test the site locally, run:
# install dependencies npm ci make serve
This will start the local Hugo server on port 1313. Open up your browser to http://localhost:1313 to view the website. As you make changes to the source files, Hugo updates the website and forces a browser refresh.
Building the API reference pages
The API reference pages located in
content/en/docs/reference/kubernetes-api are built from the Swagger specification, using https://github.com/kubernetes-sigs/reference-docs/tree/master/gen-resourcesdocs.
To update the reference pages for a new Kubernetes release (replace v1.20 in the following examples with the release to update to):
- Pull the
git submodule update --init --recursive --depth 1
- Create a new API revision into the submodule, and add the Swagger specification:
mkdir api-ref-generator/gen-resourcesdocs/api/v1.20 curl 'https://raw.githubusercontent.com/kubernetes/kubernetes/master/api/openapi-spec/swagger.json' > api-ref-generator/gen-resourcesdocs/api/v1.20/swagger.json
- Copy the table of contents and fields configuration for the new release from a previous one:
mkdir api-ref-generator/gen-resourcesdocs/api/v1.20 cp api-ref-generator/gen-resourcesdocs/api/v1.19/* api-ref-generator/gen-resourcesdocs/api/v1.20/
Adapt the files
fields.yamlto reflect the changes between the two releases
Next, build the pages:
You can test the results locally by making and serving the site from a container image:
make container-image make container-serve
In a web browser, go to http://localhost:1313/docs/reference/kubernetes-api/ to view the API reference.
- When all changes of the new contract are reflected into the configuration files
fields.yaml, create a Pull Request with the newly generated API reference pages.
error: failed to transform resource: TOCSS: failed to transform "scss/main.scss" (text/x-scss): this feature is not available in your current Hugo version
Hugo is shipped in two set of binaries for technical reasons. The current website runs based on the Hugo Extended version only. In the release page look for archives with
extended in the name. To confirm, run
hugo version and look for the word
Troubleshooting macOS for too many open files
If you run
make serve on macOS and receive the following error:
ERROR 2020/08/01 19:09:18 Error: listen tcp 127.0.0.1:1313: socket: too many open files make: *** [serve] Error 1
Try checking the current limit for open files:
launchctl limit maxfiles
Then run the following commands (adapted from https://gist.github.com/tombigel/d503800a282fcadbee14b537735d202c):
#!/bin/sh # These are the original gist links, linking to my gists now. # curl -O https://gist.githubusercontent.com/a2ikm/761c2ab02b7b3935679e55af5d81786a/raw/ab644cb92f216c019a2f032bbf25e258b01d87f9/limit.maxfiles.plist # curl -O https://gist.githubusercontent.com/a2ikm/761c2ab02b7b3935679e55af5d81786a/raw/ab644cb92f216c019a2f032bbf25e258b01d87f9/limit.maxproc.plist curl -O https://gist.githubusercontent.com/tombigel/d503800a282fcadbee14b537735d202c/raw/ed73cacf82906fdde59976a0c8248cce8b44f906/limit.maxfiles.plist curl -O https://gist.githubusercontent.com/tombigel/d503800a282fcadbee14b537735d202c/raw/ed73cacf82906fdde59976a0c8248cce8b44f906/limit.maxproc.plist sudo mv limit.maxfiles.plist /Library/LaunchDaemons sudo mv limit.maxproc.plist /Library/LaunchDaemons sudo chown root:wheel /Library/LaunchDaemons/limit.maxfiles.plist sudo chown root:wheel /Library/LaunchDaemons/limit.maxproc.plist sudo launchctl load -w /Library/LaunchDaemons/limit.maxfiles.plist
This works for Catalina as well as Mojave macOS.
Get involved with SIG Docs
Learn more about SIG Docs Kubernetes community and meetings on the community page.
You can also reach the maintainers of this project at:
Contributing to the docs
You can click the Fork button in the upper-right area of the screen to create a copy of this repository in your GitHub account. This copy is called a fork. Make any changes you want in your fork, and when you are ready to send those changes to us, go to your fork and create a new pull request to let us know about it.
Once your pull request is created, a Kubernetes reviewer will take responsibility for providing clear, actionable feedback. As the owner of the pull request, it is your responsibility to modify your pull request to address the feedback that has been provided to you by the Kubernetes reviewer.
Also, note that you may end up having more than one Kubernetes reviewer provide you feedback or you may end up getting feedback from a Kubernetes reviewer that is different than the one initially assigned to provide you feedback.
Furthermore, in some cases, one of your reviewers might ask for a technical review from a Kubernetes tech reviewer when needed. Reviewers will do their best to provide feedback in a timely fashion but response time can vary based on circumstances.
For more information about contributing to the Kubernetes documentation, see:
- Contribute to Kubernetes docs
- Page Content Types
- Documentation Style Guide
- Localizing Kubernetes Documentation
Code of conduct
Participation in the Kubernetes community is governed by the CNCF Code of Conduct.
Kubernetes thrives on community participation, and we appreciate your contributions to our website and our documentation!