Operation: Midnight

Description

This is a demonstration of DevOps automation of AWS, and Rocky Linux using CloudFormation, Ansible, and Make.

Prerequisites

• AWS CLI
• ansible-playbook (I used 2.7.12)
• Make
• SSH key setup:
  • SSH keypair registered in ec2 as 'magic' and present at ~/.ssh/id_rsa

Usage

Deployment takes on average about five minutes.

make deploy

This will create the CloudFormation stacks vpc and compute, and then run the Ansible playbook to configure the EC2 instances. EC2 resources and the nat gateway in private VPC have costs associated so be sure to run:

make destroy

Every change made to your aws account will be in a cloudformation stack (except the ssh key) so while the make destroy target does check that resources are deleted you can validate this yourself by looking for the cloudformation stacks make deploy creates.

Failure conditions

CloudFormation will take a while to fail if the designated ssh key name is not registered in ec2.

Failed to create/update the stack. Run the following command
to fetch the list of events leading up to the failure
aws cloudformation describe-stack-events --stack-name compute
make[2]: *** [deploy_compute] Error 255
make[1]: *** [deploy] Error 2
make: *** [deploy] Error 2

Run make destroy to clean this up.

Ansible will fail if the ssh key setup is incorrect.

make destroy will fail if cloudformation stacks were deleted manually.