ama-docker-compose Cookbook

This cookbook automates installation and usage of Docker Compose tool.

Please not that most of the actions - at least for 0.1.x - are executed regardless of current state. Even if all containers are up and running, action :up will issue a new shell command. Single-service actions are not yet supported either.

Dev branch state:

Requirements

Platforms

• Ubuntu LTS 14.04+
• Debian 7+
• Fedora 21+
• Centos 6.5+

Should work on other Linux distros as well, but we don't have enough time to set up kitchen grounds for all cases. Should work on Mac as well but never tested.

Chef

• Chef 12.0 or later

Cookbooks

This cookbook doesn't have any dependencies on other cookbooks.

Attributes

Attributes are used to set default values only.

Key	Default
['ama-docker-compose']['version']	1.16.1

Recipes

You can skip some burden and include default recipe to install version specified in attribute in default location (/usr/local/bin/docker-compose).

Resources

docker_compose_installation

Installs Docker Compose, latest version (known by cookbook) by default.

Examples:

docker_compose_installation '/usr/local/bin/docker-compose'

docker_compose_installation 'default' do
  version '1.10.1' 
  path '/usr/local/bin/docker-compose'
end

Available actions are :create/:install and :delete/:remove, path attribute defaults to resource name, version attribute defaults to node['ama-docker-compose']['version']. I can't promise it will always be up to date, though.

docker_compose_deployment

This resource operates with docker composition (named as deployment for clarity), running commands as up, down, kill and others against set of docker-compose files.

Examples:

# Runs up command against  specified file
docker_compose_deployment '/srv/router/docker-compose.yml'

docker_compose_deployment '/srv/router/docker-compose.yml' do
  environment({COMPOSE_PROJECT_NAME: 'my_custom_name'})
end

docker_compose_deployment 'router' do
  executable '/usr/local/bin/docker-compose'
  files '/srv/router/docker-compose.yml'
  signal 'SIGHUP'
  action :kill
end

docker_compose_deployment 'router' do
  files ['/srv/router/docker-compose.yml', '/srv/router/docker-compose-overrides.yml']
  timeout 10
  action :stop
end

Attributes:

Attribute	Types	Default	Description
files	String / String[]	Resource name	Single or multiple paths to configuration files
executable	String	/usr/local/bin/docker-compose	Path to specific docker-compose executable
timeout	Integer / Nil	10	Timeout for internal docker-compose commands where applicable
shell_timeout	Integer / Nil	300	Timeout for any underlying command to prevent infinite stalling
signal	String	SIGKILL	Signal for kill command
scale	String		Arguments for docker-compose scale command e.g. nginx=2
environment	Hash / Nil	{}	Arbitrary environment variables to be passed to docker-compose call

Available actions are:

Action	Description
:create	Maps to same docker-compose command
:start	Maps to same docker-compose command
:stop	Maps to same docker-compose command
:delete	Alias for :rm to preserve standard Chef action set
:rm	Maps to same docker-compose command
:restart	Maps to same docker-compose command
:pull	Maps to same docker-compose command
:push	Maps to same docker-compose command
:up	Maps to same docker-compose command
:down	Maps to same docker-compose command
:kill	Maps to same docker-compose command
:scale	Maps to same docker-compose command

Please note that those actions are always executed (at least, for now), since it is difficult to check whether all containers are up, killed, stopped or anything else regarding state of deployment. However, you can always use guard files that, if present, would guarantee action has been executed.

Contributing

1. Fork the repository on Github
2. Create a named feature branch (like add_component_x)
3. Write your change
4. Write tests for your change (if applicable)
5. Run the tests, ensuring they all pass
6. Submit a Pull Request to dev branch using Github

License and Authors

Authors: AMA Team / Operations
License: MIT

Information about Docker Compose authors and license can be found in official github repository.