swm

The missing tooling for a great Docker swarm experience

Introduction

Docker swarm mode is a container orchestration system with just the right level of abstraction for small to medium sized infrastructures. In contrast to alternatives like Kubernetes, it has a relatively low level of complexity while being quite developer-friendly.

That said, the current interface is lacking especially in terms of managing cluster nodes and applications. swm aims to be the missing piece for managing services and containers using infrastructure as code with a minimum amount of boilerplate.

In practice, swm can be used as a commandline extension to the main docker CLI command.

Installation

You can either download a prebuilt binary (Linux only) or build it yourself (Linux / Mac). (See below for build instructions.)

The latest version can be downloaded from the releases page.

Standalone

Copy the binary into a directory in your PATH. Then just run swm in order to use it.

Docker commandline extension

Alternatively, you can install it as a docker commandline extension:

mkdir -p ~/.docker/cli-plugins
cp swm ~/.docker/cli-plugins/docker-swm

Now, you can run it using docker swm

Usage

Commands are grouped into three categories:

• cluster
• stack
• service

Try out swm cluster, swm stack or swm service in order to find the available commands.

Development

Build

You can build the binary locally or via Docker.

When using Docker, the binary will be statically linked. It can thus be used on any amd64-compatible Linux system.

Local

• Install Crystal >= 0.33.0
• Clone this repository
• Build the binary:

  shards build
  

If the build was successful, you can find the final executable at bin/swm.

With Docker

• Install Docker and make
• Clone this repository
• Build the binary:

  sudo -E make
  

If the build was successful, you can find the final executable at bin/swm.

TODO

• Add documentation
• Add spec suite
• Add command service logs --latest <service name>

Contributing

1. Fork it (https://github.com/your-github-user/swm/fork)
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

Contributors

• Martin Honermeyer - creator and maintainer