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Generate markdown documentation from Kubernetes Custom Resource Definition (CRD) YAML files

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crdoc

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Generate markdown documentation from Kubernetes CustomResourceDefinition YAML files.

Install

Install crdoc using one of the following methods:

Binary

Download the appropriate version for your platform from Releases. You may want to install the binary to somewhere in your system's PATH such as /usr/local/bin.

For convenience, an installation script is also available:

Go install

If you have goLang 1.19 or later then you can use go install. This will put the latest released version of crdoc in $(go env GOPATH)/bin:

go install fybrik.io/crdoc@latest

💡 Prefer pinning to a specific version rather than using @latest when installing in a CI workflow

Docker images

Docker images are available and allow you to run crdoc directly via docker. For example:

docker run -u $(id -u):$(id -g) --rm -v ${PWD}:/workdir ghcr.io/fybrik/crdoc:latest --resources /workdir/example/crds --output /workdir/example/output.md

💡 Prefer pinning to a specific version rather than using :latest when running in a CI workflow

Usage

Output markdown documentation from Kubernetes CustomResourceDefinition YAML files

Usage:
  crdoc [flags]

Examples:

  # Generate example/output.md from example/crds using the default markdown.tmpl template: 
  crdoc --resources example/crds --output example/output.md

  # Override template (builtin or custom):
  crdoc --resources example/crds --output example/output.md --template frontmatter.tmpl
  crdoc --resources example/crds --output example/output.md --template templates_folder/file.tmpl

  # Use a Table of Contents to filter and order CRDs
  crdoc --resources example/crds --output example/output.md --toc example/toc.yaml


Flags:
  -h, --help               help for crdoc
  -o, --output string      Path to output markdown file (required)
  -r, --resources string   Path to YAML file or directory containing CustomResourceDefinitions (required)
  -t, --template string    Path to file in a templates directory (default "markdown.tmpl")
  -c, --toc string         Path to table of contents YAML file
  -v, --version            version for crdoc

Limitations

  • There are no custom type information because this information is not available in the YAMLs. This tool was specifically designed with that in mind and provides a different reader experience compared to other similar tools.
  • apiextensions.k8s.io/v1beta1 is supported but we assume a structural schema as required by v1.

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