- How to understand the impact of change in cloud formation
- Navigate to any cloudformation template resource properties and we observe a section Update requires.
- If Update requires has a value of No Interruption, then changing this value will not impact, but if the value is Replacement then the current resource will be deleted and recreated with new values.
- Now lets deploy the template with public ip address for web and app subnets
- So lets add the output of the webserver as url, So for this we need to work with
- These above mentioned changes are included in the following commit of git Refer Here
- The User data fix is over here
Manual Steps for creating the architecture which John wants
- Create a VPC with Six Subnets
- Create a autoscaling group for app servers (tomcat)