Dry Run

Let’s do a dry run and see what CloudFormation is generated!

Copy/Paste the following commands into your Cloud9 workspace:

cd ~/environment/ecsdemo-platform
mu -d env up acceptance
ls -la /tmp/mu-dryrun

The files are broken up into stacks, and include a template for the CloudFormation and a config for the parameters that will be templated.

To see how the VPC will be constructed, for example, take a look at the template-mu-vpc-acceptance.yml file:

less /tmp/mu-dryrun/template-${MU_NAMESPACE}-vpc-acceptance.yml

This will dry-run Mu and generate CloudFormation so you can examine what will be built before actually building it.