AWS OpsWorks Stacks (App)

Overview

• Represents application code to be deployed on the stack
  

App Configuration

• Settings
• Application Source
  • S3 archive
  • git (GitHub, BitBucket)
    • Use tag to reference static version
  • Subversion
  • HTTP archive
• Data Sources
  • RDS
    • Database Instance
    • Database Name
    • Connection string is added to deploy attributes
  • None
• Environment Variables
  • Key - Value
    • Secure = protected Value for sensitive data  (not returned by DescribeApps API)
  • Added to deploy attributes
• Domain and SSL Settings

Deployment

• When app is added or modified it must be deployed manually
• "deploy" event is triggered
  • Deploy recipes are run
• All selected instances are concurrently updated

Deployment Types

• Rolling
  • Must be manually done (e.g. AZ by AZ)
  • ELB must be manually handled (deregister/register)
• Blue-Green
  
  • Separate stacks, e.g.
    • Development
    • Staging
    • Production
  • Once Staging ready it's promoted to Green 
  • Warm-up ELBs on Green
  • Gradually change traffic weights