This provides a template for running a simple two-tier architecture on Amazon Web services. The premise is that you have stateless app servers running behind an ELB serving traffic. A seperate RDS db tier is also created.
To simplify the example, this intentionally ignores deploying and getting your application onto the servers. However, you could do so either via provisioners and a configuration management tool, or by pre-baking configured AMIs with Packer.
This example will also create a new EC2 Key Pair in the specified AWS Region.
The key name and path to the public key must be specified via the
terraform command vars or in the variables.tf file.
After you run terraform apply on this configuration, it will
automatically output the DNS address of the ELB. After your instance
registers, this should respond with the default nginx web page.
The system reads your AWS credentials from a running instance of vault