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Starting with VyOS 1.2 (`crux`) our documentation is being migrated from the old wiki
to ReadTheDocs. Documentation can be accessed via the following URL: https://docs.vyos.io

Our old WiKi can still be accessed from the
[Wayback Machine](https://web.archive.org/web/20200225171529/https://wiki.vyos.net/wiki/Main_Page)

# Build

[![Documentation Status](https://readthedocs.org/projects/vyos/badge/?version=latest)](https://docs.vyos.io/en/latest/?badge=equuleus)

# Versions

Our version follows the very same branching scheme as the VyOS source modules
itself. We maintain one documentation branch per VyOS release. The default
branch that contains the most recent VyOS documentation is called `master`
and matches the latest VyOS release which is 1.4 at the time.

All new documentation enhancements go to the `master` branch. If those changes
are beneficial for previous VyOS documentation versions they will be
cherry-picked to the appropriate branch(es).

Post-1.2.0 branches are named after constellations sorted by area from smallest to
largest. There are 88 of them, here's the
[complete list](https://en.wikipedia.org/wiki/IAU_designated_constellations_by_area).

* 1.2.x: `crux` (Southern Cross)
* 1.3.x: `equuleus` (Little Horse)
* 1.4.x: `sagitta` (Arrow)
* ...

### sphinx
Debian requires some extra steps for
installing `sphinx`, `sphinx-autobuild` and `sphinx-rtd-theme` packages:

First ensure that Python 2 & Python 3 are installed and Python 3 is the default:
```bash
python --version
```

Alternatively, to make Python the default, revise the following line to
point at the relevant 3.x version of the binary on your system:

```bash
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 0
```

Then install the sphinx group of packages:
```bash
sudo apt-get install python3-sphinx
```

Although almost everything uses Python 3, in order to install this specific
package, make sure that pip points at the Python 2 version of the package manager:

```bash
python --version
```

Then run:

```bash
sudo pip install sphinx-rtd-theme
```

Do the following to build the HTML and start a webserver:
* Run `make livehtml` inside the `docs` folder

Then, to view the live output:
* Browse to http://localhost:8000
Note: The changes you save to the sources are represented in the live HTML output
automatically (and almost instantly) without the need to rebuild or refresh manually.

## Docker

Using our [Dockerfile](docker/Dockerfile) you can create your own Docker container
that is used to build a VyOS documentation.

## Setup

You can either build the container on your own or directly fetch it prebuilt
from Dockerhub. If you want to build it for yourself, use the following command.

```bash
$ docker build -t vyos/vyos-documentation docker
```

### Building documentation

If the `vyos/vyos-documentation` container could not be found locally it will be
automatically fetched from Dockerhub.

```bash
$ docker run --rm -it -v "$(pwd)":/vyos -w /vyos/docs \
  -e GOSU_UID=$(id -u) -e GOSU_GID=$(id -g) vyos/vyos-documentation make html

# sphinx autobuild
$ docker run --rm -it -p 8000:8000 -v "$(pwd)":/vyos -w /vyos/docs -e \
  GOSU_UID=$(id -u) -e GOSU_GID=$(id -g) vyos/vyos-documentation make livehtml
```

### Test the docs

Discuss in this Phabricator task: [T1731](https://phabricator.vyos.net/T1731)

To test all files run:

```bash
$ docker run --rm -it -v "$(pwd)":/vyos -w /vyos/docs \
  -e GOSU_UID=$(id -u) -e GOSU_GID=$(id -g) vyos/vyos-documentation vale .
```

to test a specific file (e.g. `clustering.rst`)

```bash
$ docker run --rm -it -v "$(pwd)":/vyos -w /vyos/docs -e GOSU_UID=$(id -u) \
  -e GOSU_GID=$(id -g) vyos/vyos-documentation vale clustering.rst
```