The document discusses using Troposphere to implement infrastructure as code on AWS. Some key points: Troposphere allows describing AWS resources like CloudFormation templates in Python code for easier version control and code reviews compared to JSON/YAML templates. It generates CloudFormation templates without requiring provisioning. Troposphere supports features like extended template classes, cross-stack references, and tooling to help with conformity, naming, tagging, and other aspects. It can help decouple dependencies and make infrastructure migration and blue/green deployments easier. The document emphasizes testing infrastructure code for reliability, and building infrastructure that is designed to handle failures and change over time.

1. Infrastructure as Code with
Troposphere on AWS
Mathias Mårtens

2. AWS CloudFormation
● Provision and update AWS resources
● Manage dependencies of AWS resources
● Runtime parameters
● References
● Flow control
● json, yaml

3. Limitations
● Growing organisation
● Amount of micro services
Complexity
● Nested Stacks
● Templates reuse
● Coupled DNS
● Naming
● Tagging

4. Troposphere
● Python code to describe the AWS resources
● ~1-to-1 mapping to CFN
● Built in property and type checking
● Generates CFN json, no provisioning
● Easier to get started with than CFN
● Easier to do code reviews

5. Extended Template Class
Naming
Metadata
Tooling

6. Cross Stack References
AWS Resources
Metadata
Dependencies

7. Conformity
Naming
Tags
Logging
Alarm
Metrics

8. Decouple DNS
Blue/Green deploy
Infrastructure migration

9. Generate & Version Control

10. Testing
● Golden file testing
● 100% test coverage

11. Wrap-up
● Build for change
● Version control infrastructure
● Don’t mix IaC and manual config
● Build to handle failures in a
controlled way
● Hide complexity where it is easy to
test

12. Learn more
More about Viaplay: https://viaplay.se/jobs
Troposphere on github: https://github.com/cloudtools/troposphere
See a longer version of this talk done by my colleague Nils:
https://www.youtube.com/watch?v=IRHoT07sV1E