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Provision Docker-Swarm with Ansible on EC2

This playbook allows you to providion a docker-swarm on Amazon EC2 and provides a simple teardown playbook to remove the cluster. The deploy.yml playbook creates a swarm-admin instance, as the control point for the swarm, and a consul node for key/value needed for docker networking.

Requirements

  • Ansible 1.9+
  • python >= 2.6
  • boto

Environment Variables

EVs for provisioing on EC2 are located at vars/external_vars.yml. Docker-Machine, used to create the swarm, needs a couple extra EVs for provisioing a swarm. Add your specifcs to this file.

What it does

Running the playbook: $ ansible-playbook deploy.yml does the following:

  1. Creates an instance called "Admin-Swarm" with the security group, "swarm-admin".
  2. Installs Docker-Engine, Docker-Machine and Docker-Compose on the Admin-Swarm node
  3. Creates a swarm-master node and the number of swarm-nodes specified in the EVs
  4. Copies the Public key to swarm-master and nodes

Teardown

First, export your creds on the command line:

export AWS_ACCESS_KEY_ID='AK123'

export AWS_SECRET_ACCESS_KEY='abc123'

Run the playbook: $ ansible-playbook -i ec2.py teardown.yml . It does the following:

  1. Runs ec2 dynamic inventory script and finds node with tag_role_admin
  2. Terminates the consul, swarm-master and swarm nodes
  3. Terminates Admin-Swarm instance