Puppet Docker Using Docker-Compose with Puppet

Question

Does the puppetlabs/docker module that is available in the puppet forge also have inbuilt configurations to use docker-compose? Standalone docker required to install docker compose specifically to use it. Is it the same with Puppet+Docker Integration (ie.puppetlabs/docker module)?

Answer 1

• Docker Compose describes a set of containers in YAML format and runs a command to build and run those containers.

• Included in the docker module is the docker_compose type. 

• This enables Puppet to run Compose and remediate any issues to ensure reality matches the model in your Compose file.

• Before you use the docker_compose type, you must install the Docker Compose utility.

• To install Docker Compose, add the following code to the manifest file:

class {'docker::compose':
  ensure => present,
  version => '1.9.0',
}

• Set the version parameter to any version you need to install.

• This is an example of a Compose file:

compose_test:
  image: ubuntu:14.04
  command: /bin/sh -c "while true; do echo hello world; sleep 1; done"

• Specify the file resource to add a Compose file to the machine you have Puppet running on. 

• To define a docker_compose resource pointing to the Compose file, add the following code to the manifest file:

docker_compose { 'test':
  compose_files => ['/tmp/docker-compose.yml'],
  ensure  => present,
}

• Puppet automatically runs Compose, because the relevant Compose services aren't running. If required, include additional options such as enabling experimental features and scaling rules.