Prior to provisioning infrastructure you first need to prepare AMIs for Consul, Vault and Nomad. In each case you will leverage code available from the official modules from the Terraform Module Registry. In all cases, the modules leverage Packer to create Amazon Machine Images (AMIs) that have each product plus Dnsmasq installed on top of Ubuntu 16.04; specifically:

• Consul: install-consul and install-dnsmasq.
• Nomad: install-nomad and install-dnsmasq.
• Vault: install-vault and install-dnsmasq.

These AMIs will have Consul installed and configured to automatically join a cluster during boot-up. They also have Dnsmasq installed and configured to use Consul for DNS lookups of the .consul domain (e.g. foo.service.consul).

To build the AMIs:

1. git clone this repo to your computer.
2. Install Packer.
3. Configure your AWS credentials using one of the options supported by the AWS SDK. Usually, the easiest option is to set the AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY environment variables.
4. Update the ./packer/variables.json configure the AWS region, Consul, Nomad and Vault versions and Consult, Nomad and Vault module versions (from https://registry.terraform.io).
5. Run ./packer/build-amis.sh
6. When each build finishes, it will output the IDs of the new AMIs, update consul_ami, vault_consul_ami and nomad_consul_ami in ./variables.tf appropriately.

TODO

./helpers/consul-helper.sh

TODO

./helpers/nomad-helper.sh

TODO

TODO

TODO

./helpers/vault-helper.sh