Intro to Docker and clustering with Rancher from scratch

Slides: http://www.slideshare.net/JohnCulviner/intro-to-docker-and-clustering-with-rancher-from-scratch

Description

• Aids in setup of Docker + Rancher on Digital Ocean with Terraform.
• Also contains a variety of different language API examples that demonstrate how the Rancher/HAProxy load balancer works:
  • nodejs-echo-hostname
  • dotnetcore-echo-hostname

Setup

• Create a DigitalOcean account
• Create an API token
• set an environment variable for the token

export DIGITALOCEAN_TOKEN="ABDC123..."

• Install terraform
• Make sure you have a ~/.ssh/id_rsa. If you don't run ssh-keygen with default options from ~/.ssh/
• To create your VMs, from ./terraform run

terraform apply

• Update ./ansible/inventory.ini for the IPs of your new VMs
• Install ansible
• From ./ansible run

ansible-playbook install-docker-rancher.yml

• Visit http://IP_OF_YOUR_DOCKER_0_BOX:8080/ Infrastructure > Add Hosts
• Run

ansible all -u root -a "COMMAND_RANCHER_GIVES_YOU"

Done!

You should now have a 4 node Rancher + Cattle + Docker cluster going that you can run containers on