mu.yml

---

environments:
  - name: example

## You can customize the generated CloudFormation by adding a templates section.
##  The name of the CloudFormation stack that you are trying to update is the key
##  and the value is snippet of CloudFormation template that is spliced together
##  with the default template for that stack.
##
## To preview the template without actually making any changes in your AWS account,
##  add the --dryrun or -d flag.
##
## WARNING: don't use the short for for intrinsic functions (e.g. use `Fn::Sub`, not `!Sub`).
##  The `!` is a YAML tag and isn't able to survive deserialization and serialization.
##
## For more details, see https://github.com/stelligent/mu/wiki/Custom-CloudFormation
templates:
  mu-cluster-example:   ## <-- this is the name of the CloudFormation stack that is being updated
    Resources:

      # Define a new security group
      ExtraSG:
        Type: AWS::EC2::SecurityGroup
        Properties:
          VpcId:
            Fn::ImportValue: !Sub ${VpcId}
          GroupDescription: Example additional ECS Host Security Group
          SecurityGroupIngress:
          - IpProtocol: tcp
            FromPort: '8080'
            ToPort: '8080'
            CidrIp: !Ref SshAllow

      ## Update the existing launch config to reference new SG
      ContainerInstances:
        Properties:
          SecurityGroups: [ !Ref ExtraSG ]


## Override stack parameters
parameters:
  'mu-environment-acceptance':
    ImageId: ami-xxx

## Override stack tags
tags:
  'mu-environment-acceptance':
    CostCenter: research