Includes roles for docker swarm, k8s and deploying gitlab runners
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README.md

Ansible Role: Docker Swarm

Heavily modified version of this repository. I've removed anything that didn't specifically apply to my build of a Raspi swarm cluster. I will only supply limited support.

Setup a Docker Swarm cluster on Raspberry Pi using the new Docker Engine's "Swarm Mode" (https://docs.docker.com/engine/swarm/).

Requirements

  • Three Raspberry Pis running Raspbian Lite with SSH enabled, and the hostnames swarm-1, swarm-2, and swarm-3
  • Optional a fourth pi to run ansible from.

Usage

Start by generating SSH keys if you haven't already.

ssh-keygen

Copy keys to your to-be swarm cluster. The password is 'raspberry' by default.

ssh-copy-id swarm-1
ssh-copy-id swarm-2
ssh-copy-id swarm-3

Remove password from pi account on swarm (for security, optional)

ssh swarm-1 sudo passwd -d pi
ssh swarm-2 sudo passwd -d pi
ssh swarm-3 sudo passwd -d pi

Finally, run the command to configure your swarm cluster from this repo:

ansible-playbook dockerswarm.yml -b -i hosts

Dependencies

None.

Example Playbook

$ cat hosts

[docker_engine]
swarm-1
swarm-2
swarm-3

[docker_swarm_manager]
swarm-1

[docker_swarm_worker]
swarm-2
swarm-3

$ cat playbook.yml
- name: "Provision Docker Swarm Cluster"
  hosts: all
  roles:
    - { role: dockerswarm }

License

MIT

Author Information

Original Author: Andrea Tosatto (@_hilbert_)

Modified heavily by: John Barney