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INSTRUCTIONS.md

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Instructions

Welcome on board!! We sincerely thank you all for joining us. This document provides some hopefully useful instructions to prepare the machine's image for spinning a node to join the Swarm created by this project, and the join instructions.

Node Image Preparation for Massive Duplication

  1. We need a machine with 512MB of RAM, 1 vCore, 20GB disk, and a public IPv4 address. Yes we need a public IP for each node.
  2. Install Ubuntu 16.04 (or choose your own OS)
  3. As root, run curl -sSL https://experimental.docker.com | sh
  4. Stop the Docker service, run service docker stop
  5. Remove the key file, run rm /etc/docker/key.json. This is the really important step.
  6. Shut it down and take snapshot

Joining the hard way

  1. SSH to each of your node
  2. Check if you're really running Docker 1.12-rc4. Run $ docker version
  3. Start joining. Run $ docker swarm join <IP>:2377 --secret <SECRET>
  4. Logout

Please feel free to use any script to loop over those.

Joining via SSH single-liner

Assuming that you've got a node setup with root access via SSH and key pairs, just do this single-liner for each node:

ssh root@<YOUR NODE IP> docker swarm join <MANAGER IP>:2377 --secret <SECRET>

For large scale, please feel free to use any script to loop over those.