A quick demo of Terraform. It creates multiple CoreOS instances in Amazon EC2. This script is still in early development.
You will need to set the following variables either in a terraform.tfvars file or via the commandline:
# EC2 Variables
access_key = "YOUR_ACCESS_KEY"
secret_key = "YOUR_SECRET_KEY"
Also currently you need to set the count you want in the count_override.tf file. If you want ssh access set the aws_key_name variable to an aws key name or remove all references to it from this count_override.tf
variable "aws_key_name" {}
resource "aws_instance" "docker_host" {
count = 3
key_name = "${var.aws_key_name}"
}
To run:
- Configure the files in the tf directory. Rename them so that they do not have the .example extension.
- Build the container
docker build -t buildingbananas/terraform-demo .- run the testing container interactively
docker run -i -t --entrypoint=/bin/bash buildingbananas/terraform-demo -s- create the default 3 instance CoreOS cluster
terraform apply --var-file=terraform.tfvars -var token=$(curl https://discovery.etcd.io/new)
##ToDo List
- Work out issues with security group
- Compile terraform from source in the docker container so that it always has the latest patches
- Move the user_data to a file
- Set up count so it's an interpolated variable and remove the need for count_override.tf file
- Work out a better way method to have optional fields like key name