Cloudformation

POC of zero downtime blue/green deployment with AWS CodePipeline and CloudFormation.

How to remediate drifted resources that require to be replaced when conciliating the drift through a CloudFormation…

API Gateway, DynamoDB and Discogs.com API

If you have a big collection of records and you enjoy buying, selling and exploring…

How can I avoid waiting for one hour if my custom resource lambda function fails to execute?

Cross Account SNS Topic in CloudFormation

When I think about what makes an infrastructure as a code tool valuable, I don’t just…

Dynamic resource generation of resources using CloudFormation Macros.

One of the things you can do with this new feature is generate and deploy a number of resources based in a parameter value or the resulting value of the describing the number of AZs in order to create a subnet…

ECS Service Discovery as workaround for lack of user-defined bridge network ECS limitation.

ECS only allows default bridge network. As you already know this mode unlike the user defined bridge network doesn’t expose automatically all ports to each other containers.

How to store ECS tasks status history

As you know is not possible to keep the stopped tasks history for ECS as they are cleared after a while. As stated for the ListTask AWS ECS API reference “stopped tasks appear in the returned results for at least one hour.”

REDIS ElastiCache MultiAZ in CloudFormation

An example template that stands up an ElasticCache Replication Group Multi-AZ in a particular VPC specifying then a Subnet Group and a Security Group, VpcId is not directly referenced by the Replication Group resource, and is instead inferred by the…

How do I import a Stack Export value within Userdata in another stack?

Having exported something in STACK A

Outputs:
  EFSID:
    Value: !Ref MasterStorage
    Export:
      Name: !Sub '${AWS::StackName}-MasterStorage'