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cert-manager project logo

cert-manager Website

Source code for the cert-manager.io website, which includes documentation for each version of cert-manager as well as supported version information, installation instructions, tutorials, guides, FAQs and information for contributors.

The site uses next.js as a framework, and all documentation is written in MDX (Markdown).

Development Requirements

At the very least, you'll need to install a couple of tools to be able to build and run the site locally and to test your changes.

The following tool(s) must be installed on your system prior to developing the website:

  • cURL
  • NodeJS, version 16+
  • Golang, version 1.17+

We also assume you've got GNU coreutils installed, which is usually the case by default on Linux and should be installable via Homebrew on macOS.

Website Development Guides

Where's the documentation content?

First, docs go under content/; you shouldn't normally need to change files outside of content/ when making any documentation change.

There are several folders in content/ and which one you need depends on what you're changing:

  • Something which applies to the current version of cert-manager?
    Add it to docs/ and possibly to the specific version of cert-manager that's latest (e.g. v1.8-docs/)
  • Something which only applies to the next major version of cert-manager?
    Add it to next-docs
  • Something which isn't "versioned", e.g. a page under "contributing", release notes or our supported-releases page?
    Add it to docs/, which is the only place such pages should appear
  • Something which applies only to versions of cert-manager which have already been released?
    Change specific version docs (e.g. v1.8-docs/)

If you're not sure, ask! Reach out to us on slack and we'll point you in the right direction!

Task: Linking to other documentation pages

When working on documentation, all links to other documentation pages should be relative to the document you're working on and should point at a named markdown file.

For example, take this snapshot of the "Certificate Concepts" page.

There's an external link to an RFC which is fully specified as expected:

see [RFC 5246 section 7.4.2](https://datatracker.ietf.org/doc/html/rfc5246#section-7.4.2)

But towards the end of the page we link to the "Certificate Usage" page:

[here](../usage/certificate.md).

If we're browsing the repository on the GitHub website (i.e. on this page), that relative link will work. In addition, the next.js framework will ensure that the link is correct by stripping the .md, so the final rendered link will be to https://cert-manager.io/docs/usage/certificate as we expect.

✨ When linking to an "Introduction" page, link to the README.md file directly. The framework will remove the whole filename, so e.g. [example link](../usage/README.md) will link to https://cert-manager.io/docs/usage/.

Task: Adding new pages

Documentation files aren't automatically picked up or added to the navigation on the site when created.

If you want a file to appear, you need to add it to the manifest.json file for the given version of the site you're working on.

For example, the manifest for the docs section contains the expected path for every file.

Task: Changing OpenGraph / social sharing tags

These tags are defined in Next.js code and config.

For docs pages, OpenGraph titles and descriptions are based on the titles and descriptions in the docs themselves, which is configured in the frontmatter for each docs page. The magic happens in in pages/[...docs].jsx.

For pages except docs and for some other tags, look at changing next-seo.config.js.

Task: Adding a Comment in Documentation

Sometimes you'll want to add a comment which is only for documentation maintainers.

Use {/* my comment */} rather than the HTML-style comments you'd normally use for Markdown files. Other comment types will cause errors.

Website Development Tooling

Development Server

Ideal development environment: Netlify CLI

The best development environment uses the Netlify CLI to serve the site locally. The Netlify CLI server much more closely matches the environment in which the website is deployed, and will enable local debugging of redirects and environment variables.

To run this server, install the Netlify CLI.

This server supports hot-reloading, but note that hot-reloading of the public/_redirects file is only enabled if you also install entr, which is available in Linux package managers and in Homebrew.

./scripts/server-netlify

This script will run npm install and then start a development server at http://localhost:8888.

Note that the server will also be accessible locally at port 3000, but that on this port there'll be no support for debugging redirects or environment variables. Use port 8888.

Simpler development environment

The Netlify environment above should be preferred.

If you don't want to install any other tools though, you can run the local development server on its own with no support for debugging redirects or environment variables.

To run the simpler, less-powerful server, run:

./scripts/server

This script will run npm install and then start a development server at http://localhost:3000.

Initial builds of a page on the development server can be quite slow - a few seconds - but after the initial build changes should be picked up quickly and the development server should be snappy to use.

Running Verification Scripts

After you have made changes to the website, you should run the verify scripts to ensure things like spelling and links are valid.

To run all verification checks:

./scripts/verify

This will automatically run a number of checks against your local environment.

If you want to be thorough, you can run ./scripts/verify-release to also regenerate API / CLI docs before verification, but that check is slower and unlikely to provide any useful insight.

Building for a Release

On release, all output is placed into the out/ directory.

Building a full release includes re-running API + CLI doc generation for the latest version of cert-manager, and then running a next.js build followed by export. The full release process can be run through one script:

./scripts/build-release

If you want to test that the build still works locally, you can run ./scripts/build to build while skipping regeneration of API / CLI docs.

API / CLI Documentation Generation

To generate API / CLI reference docs manually, run:

./scripts/gendocs/generate

Since there are many old versions of cert-manager, none of which change regularly (or at all), the website build process does not re-generate documentation for older versions, on the assumption that doing so would be a waste of effort.

The solution for achieving this is simple; the generation scripts for older cert-manager versions are commented out. To rebuild, uncomment them and then re-comment after.

For versions of cert-manager older than v1.8, API doc generation used the old cert-manager import path and for this reason there's a different script - scripts/gendocs/generate-old-import-path-docs. If you want to rebuild reference docs for versions older than 1.8, you'll also need to uncomment generate-old-import-path-docs in scripts/gendocs/generate.

Signing Keys

Public keys used for verifying signatures are served on the website statically, and are located in public/public-keys directory.

See the docs on signing keys for more information about how and why these keys are generated and provided here.

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