This is the accompanying repository for this article on the Trackit blog: https://blog.trackit.io/ec2-hashicorp-1/. It contains Terraform and Packer specifications which can build a minimal EC2 cluster with service discovery and automated job placement using Consul and Nomad.
In order to build the AMIs you will need to have Packer installed. With that
done, you can go to /packer/master/ and /packer/slave/ and simply run
packer build packer.json.
Make sure to take note of the IDs for the AMIs you built.
You need an AWS account with admin access to deploy the infrastructure. First
edit /terraform/amis.tf, adding the AMI IDs you got from building the AMIs
with Packer. Also place your public SSH key in /terraform/ssh.pub so you can
later SSH into your instances with the user admin.
Then run terraform plan -out tf.plan, make sure it doesn’t plan on doing
something Terraform shouldn’t do, and run terraform apply tf.plan. In just a
few minutes you should get a fault-resistant setup where Consul handles
service discovery and Nomad manages your tasks by placing them on the slave
instances in an efficient manner.