The official Cassandra documentation lives in the project’s git repository. We use a static site generator, Antora, to create pages hosted at cassandra.apache.org.
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Using a static site generator often requires the use of a markup language instead of visual editors (which some people would call good news). Antora processes AsciiDoc, the markup language used to generate our documentation. Markup languages allow you to format text using certain syntax elements. Your document structure will also have to follow specific conventions. Feel free to take a look at existing documents to get a better idea how we structure our documents.
So how do you actually start making contributions?
Recommended for shorter documents and minor changes on existing content (e.g. fixing typos or updating descriptions)
Follow these steps to contribute using GitHub. It’s assumed that you’re logged in with an existing account.
Fork the GitHub mirror of the Cassandra repository
Create a new branch that you can use to make your edits. It’s recommended to have a separate branch for each of your working projects. It will also make it easier to create a pull request later to when you decide you’re ready to contribute your work.
Navigate to document sources
doc/source/modules to find the
.adoc file to
edit. The URL of the document should correspond to the directory
structure within the modules, where first the
component name, such as
cassandra is listed, and then the actual pages inside the
pages directory. New files can be created using the "Create new file" button:
At this point you should be able to edit the file using the GitHub web
editor. Start by naming your file and add some content. Have a look at
.adoc files to get a better idea what format elements to
Make sure to preview added content before committing any changes.
Commit your work when you’re done. Make sure to add a short description of all your edits since the last time you committed before.
Finally if you decide that you’re done working on your branch, it’s time to create a pull request!
Afterwards the GitHub Cassandra mirror will list your pull request and you’re done. Congratulations! Please give us some time to look at your suggested changes before we get back to you.
Recommended for major changes
Significant changes to the documentation are best managed through our Jira issue tracker. Please follow the same contribution guides as for regular code contributions. Creating high quality content takes a lot of effort. It’s therefore always a good idea to create a ticket before you start and explain what you’re planning to do. This will create the opportunity for other contributors and committers to comment on your ideas and work so far. Eventually your patch gets a formal review before it is committed.
Recommended for advanced editing
Using the GitHub web interface should allow you to use most common
layout elements including images. More advanced formatting options and
navigation elements depend on Antora to render correctly. Therefore, it’s
a good idea to setup Antora locally for any serious editing. Please
follow the instructions in the Cassandra source directory at
doc/README.md. Setup is very easy (at least on OSX and Linux).
Please feel free to get involved and merge pull requests created on the GitHub mirror if you’re a committer. As this is a read-only repository, you won’t be able to merge a PR directly on GitHub. You’ll have to commit the changes against the Apache repository with a comment that will close the PR when the committ syncs with GitHub.
You may use a git work flow like this:
git remote add github https://github.com/apache/cassandra.git git fetch github pull/<PR-ID>/head:<PR-ID> git checkout <PR-ID>
Now either rebase or squash the commit, e.g. for squashing:
git reset --soft origin/trunk git commit --author <PR Author>
Make sure to add a proper commit message including a "Closes #<PR-ID>" text to automatically close the PR.
Details for building and publishing of the site at cassandra.apache.org can be found here.