docker-harbormaster 0.1.1

A supervisor for docker-compose apps.

Harbormaster

Harbormaster is a small utility that lets you easily deploy multiple Docker-Compose applications.

Installation

Installing Harbormaster is simple. You can use pipx (recommended):

$ pipx install docker-harbormaster

Or pip (less recommended):

$ pip install docker-harbormaster

You need to also make sure you have git installed on your system.

Usage

Harbormaster uses a single YAML configuration file that's basically a list of repositories to deploy:

repositories:
  myapp:
    url: https://github.com/someuser/somerepo.git
  otherapp:
    url: https://gitlab.com/otheruser/otherrepo.git

Then, just run Harbormaster in the same directory as that configuration file. Harbormaster will parse the file, automatically download the repositories mentioned in it (and keep them up to date).

Harbormaster only ever writes to the working directory you specify, and nowhere else. All the data for each Compose app is under <workdir>/data/<appname>, so you can easily back up the entire data directory in one go.

Handling data directories

Due to the way Compose files work, you need to do some extra work to properly tell Harbormaster about your volumes.

Harbormaster provides two kinds of directories: Data and cache.

Data is anything that you want to keep. Data directories will never be deleted, if you remove an app later on, its corresponding data directory will be moved under the archives/ directory and renamed to <appname>-<deletion date>.

Cache is anything you don't care about. When you remove an app from the config, the cache dir is deleted.

Harbormaster will look for a file called docker-compose.yml at the root of the repo, and look for the specific strings {{ HM_DATA_DIR }} and {{ HM_CACHE_DIR }} in it. It will replace those strings with the proper directories (without trailing slashes), so the volumes section of your Compose file in your repository needs to look something like this:

volumes:
  - {{ HM_DATA_DIR }}/my_data:/some_data_dir
  - {{ HM_DATA_DIR }}/foo:/home/foo
  - {{ HM_CACHE_DIR }}/my_cache:/some_cache_dir