Scenario
- Steve (Cloud Engineer) has been assigned a task to create wordpress instance in AWS
Possible Solutions
- Manual Work: Steve can implement solution manually, but If he needs one more instance, Steve has repeat all of actions
- Automation using Shell/Powershell Scripts: Steve writes the Shell Script to create wordpress using AWS CLI. Changes in the future are difficult to handle
- Better Approach Using Templates:
- Steve creates a template for WordPress
- Whenever any team wants this, he executes a template
- To Create this template Steve uses Cloudformation.
- Using DRY (Dont Repeat Yourself) as a principle, write one use many times
- Screenshots of Creating a Template
- Once you are done, deleting the Cloud formation stack will delete everything that has been created
What is required to Write Cloudformation
- Learn Basic File formats
- JSON
- YAML
- Know the manual steps of creating deployments
Approach in Classroom
- Before writing templates, we will do the steps manually and then create a template from the understanding
Exercise
- Go through Azure’s session today
- Azure Migrate => AWS Server Migration Service
- ARM Template => CloudFormation
