Hetzner Node Set-Up

Sets up some nodes in the Hetzner cloud for demo purposes, using the Hetzner Cloud provider for Terraform.

Prerequisites

• Terraform installed
• Hetzner Cloud API token obtained and exported via export TF_VAR_hcloud_token=<YOUR TOKEN>
• Ansible installed (for provisioning the box with Docker, Java etc.)
• Optional: Vagrant and VirtualBox installed for local set-up

Set-Up

Run this once after a fresh check out:

terraform init

Running

Run this to provision the environment after adjusting the terraform.tf file as needed:

export TF_VAR_firewall_source_ip=`dig +short txt ch whoami.cloudflare @1.0.0.1`
terraform apply

Provisioning Docker etc.

• Edit hosts to contain the right IP address and key file name:

[hetzner]
<hostN> ansible_ssh_private_key_file=path/to/key ssh_public_key_file=path/to/key.pub

• Run once to limit SSH access:

ansible-playbook -i hosts --limit=hetzner init-ssh.yml

• Run to provision more packages:

ansible-playbook -i hosts --limit=hetzner playbook.yml`

This also can be run against EC2, provided an instance has been set up and added to the hosts file. (see https://alt.fedoraproject.org/cloud/, "Standard HVM AMIs"):

Terraform set-up for that tbd.

Local Set-Up via Vagrant

The Ansible set-up can also be used to provision a local VM via Vagrant and VirtualBox:

• vagrant up --provision

Subsequently, Ansible can also be run directly after changes to the playbook:

• ansible-playbook -i .vagrant/provisioners/ansible/inventory/vagrant_ansible_inventory playbook.yml