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Gazelle is a web framework geared towards private BitTorrent trackers. Although naturally focusing on music, it can be modified for most needs. Gazelle is written in PHP, Twig and JavaScript. It traditionally uses Mysql and Sphinx, but work is under way to replace those with Postgresql.

Gazelle Runtime Dependencies


To fully utilize the Logchecker, you must install the following depedencies through pip:

  • chardet
  • eac-logchecker
  • xld-logchecker


We provide installation notes here. These notes are provided as a best effort, and are not guaranteed to be fully up-to-date or accurate.

Due to the nature of torrenting, we HIGHLY recommend not trying to run this in production if you are not prepared or knowledgeable in setting up servers, proxies, and tuning TCP configs to obtain proper performance and privacy.


Docker is used to develop Gazelle. See for more information on getting Docker set up locally.


In the root folder of the Gazelle repository, run the following command:

docker compose up -d

This will pull and build the needed images to run Gazelle on Debian Bullseye. A volume is mounted from the base of the git repository at /var/www in the container. Changes to the source code are immediately served without rebuilding or restarting.

If you receive the error "http: invalid Host header", run the following

DOCKER_BUILDKIT=0 docker compose up -d

You can access the site by viewing http://localhost:7001/

Follow the "Register" link on the homepage to create the first account. The first account created is assigned the highest operational role (Sysop) automatically.

The Sysop account might not have all the permissions that have been added recently. Navigate to the /tools.php?action=userclass page and tick everything for the Sysop class.

Once the Gazelle container has been built successfully, it may be stopped and subsequently restarted without requiring connectivity with the outside world. This also means that composer and yarn are not automatically updated during a container restart and is a manual chore to perform periodically.


The ocelot repository is used to build the Ocelot image. To keep things simple, check out the source in a sibling directory to Gazelle.

$ git clone
$ cd ocelot
$ docker build . -t ocelot

Ocelot can be launched by specifying an additional configuration file:

docker compose -f docker-compose.yml -f misc/docker-compose.ocelot.yml up -d


The following ports are forwarded:

  • 80 -> 7001 (web)
  • 3306 -> 36000 (mysql)
  • 34000 -> 34000 (ocelot if present)

Going further

If you want to poke around inside the web container, open a shell:

export WEBCONT=$(docker ps|awk '$2 ~ /web$/ {print $1}')

docker exec -it $WEBCONT bash

To keep an eye on PHP errors during development:

docker exec -it $WEBCONT tail -n 20 -f /var/log/nginx/error.log

To create a Phinx migration:

docker exec -it $WEBCONT vendor/bin/phinx create MyNewMigration

Edit the resulting file and then apply it:

docker exec -it $WEBCONT vendor/bin/phinx migrate

For postgres add -c ./misc/phinx-pg.php to the END of the phinx commands

To access the database, look at .docker/mysql-home/.my.cnf The credentials should match those used in the docker-compose.yml file.

And then:

docker exec -it $MYSQLCONT mysql

In the same vein, you can use mysqldump to perform a backup.

To view the sphinx tables:

export SPHINXCONT=$(docker ps|awk '$2 ~ /sphinxsearch/ {print $1}') docker exec -it $SPHINXCONT mysql -h -P 9306


You can run Boris directly:

docker exec -it $WEBCONT /var/www/boris

Gitlab CI testrunner

.docker/gitlab.Dockerfile can be used to create a Docker container suitable for running the test suite in a Gitlab CI runner. The included .gitlab-ci.yml config runs unit tests with phpunit and afterwards end-to-end tests with cypress.

To build the container, get the sql files from the OPSnet/gazelle-e2e-testing-docker repo and place them alongside the gitlab.Dockerfile. Then run

docker build -f .docker/gitlab.Dockerfile -t gazelle-e2e-testing:latest --compress .

in the gazelle repo's root directory (this one).

Similarly, the phpstan container can be built with

docker build -t gazelle-phpstan:latest -f .docker/phpstan.Dockerfile --compress .docker

Upgrading Postgresql

Major Pg versions require a dump and restore. In the docker environment this means doing the following;

  • run 'make pgdump' to dump the current contents
  • stop the current postgresql container
  • mv .docker/data/pg .docker/data/pg.old
  • mkdir ./docker/data/pg
  • docker-compose stop && docker-compose up -d
  • import the dump to the docker pg container

Contact and Discussion

Feel free to join #develop on to discuss any questions concerning Gazelle (or any of the repos published by Orpheus).

Open source

Run yarn prepare once, to install a git precommit hook that will run linting checks on PHP and CSS files at each commit.

Create issues at Patches welcome!