Ali Can Kuştemur - Infrastructure as Code with Terraform on AWS

1. Everything as Code
alican.kustemur@gmail.com
linkedin.com/in/alicankustemur
medium.com/@alicankustemur
Infrastructre as Code with Terraform on AWS
Ali Can Kustemur
💻 DevOps Engineer

2. Agenda
• Why is Infrastructure as Code (IaC) ?
• What is IaC ?
• Problems we had before IaC ?
• Goals of IaC
• Configuration Management vs Orchestration
• Why & What is Terraform ?
• Demo on AWS

3. Why is Infrastructure as Code ?

4. Why is Infrastructure as Code ?
AWS EC2 Schema :

5. Why is Infrastructure as Code ?
Big Bang
Schema :

6. Why is Infrastructure as Code ?
Lovely
Code :

7. What is IaC ?
https://www.thoughtworks.com/insights/blog/infrastructure-code-reason-smile

8. What is IaC ?
• Infrastructure as Code, or programmable infrastructure,
means writing code to manage configurations and automate provisioning
of infrastructure in addition to deployments.
• The basic idea is that you treat your IT infrastructure as software. This
helps you to make changes to it rapidly and easily, at the same time safely
and reliably.
https://www.thoughtworks.com/insights/blog/infrastructure-code-reason-smile

9. What is IaC ?
• This allows people to apply software development tools such as version
control systems (VCS), automated testing libraries, and deployment
orchestration to manage infrastructure.
• It also opens the door to exploit development practices such as test-driven
development (TDD), continuous integration (CI), and continuous delivery
(CD).
https://www.thoughtworks.com/insights/blog/infrastructure-code-reason-smile
https://www.safaribooksonline.com/library/view/infrastructure-as-code/9781491924334/ch01.html

10. Problems we had before IAC ?
• Same Infrastructure on all environments
• Quick Deploy
• Versioning
• Immutable Infrastructure
https://www.thoughtworks.com/insights/blog/infrastructure-code-reason-smile

11. Goals of IaC
• IT infrastructure supports and enables change, rather than being an
obstacle or a constraint.
• Changes to the system are routine, without drama or stress for users or IT
staff.
• IT staff spends their time on valuable things that engage their abilities, not
on routine, repetitive tasks.
• Users are able to define, provision, and manage the resources they need,
without needing IT staff to do it for them.
https://www.safaribooksonline.com/library/view/infrastructure-as-code/9781491924334/ch01.html

12. Goals of IaC
• Teams are able to easily and quickly recover from failures, rather than
assuming failure can be completely prevented.
• Improvements are made continuously, rather than done through
expensive and risky “big bang” projects.
• Solutions to problems are proven through implementing, testing, and
measuring them, rather than by discussing them in meetings and
documents.
https://www.safaribooksonline.com/library/view/infrastructure-as-code/9781491924334/ch01.html

13. IaC is not just for Cloud
Infrastructure as code has come into its own with cloud, because it’s
difficult to manage servers in the cloud well without it. But the principles and
practices of infrastructure as code can be applied to infrastructure whether it
runs on cloud, virtualized systems, or even directly on physical hardware.
https://www.safaribooksonline.com/library/view/infrastructure-as-code/9781491924334/ch01.html

14. Be agile !
• To properly embrace IaC, you need three things: agile
development processes, a DevOps environment and the
tools to write the code.
• Agile is necessary because IaC is all about speed.
https://www.safaribooksonline.com/library/view/infrastructure-as-code/9781491924334/ch01.html

15. Be agile !
• Says Morris: " If you use automation tools but still
manage your infrastructure with the Iron Age approaches
to change management, you’re losing the benefit. IaC is
more reliable, particularly if you use Agile engineering
practices like test driven development, continuous
integration and continuous delivery. "
https://www.safaribooksonline.com/library/view/infrastructure-as-code/9781491924334/ch01.html

17. Configuration Management
vs Orchestration

18. Why is Terraform ?

19. What is Terraform ?
• Write, Plan and Create Infrastructure as Code
• Execution Plans ( Actual – Desire State )
• Supports Multivendor ( AWS, Azure, GCP, OpenStack,Wmware etc.) +76
• Resource Graph
• Versioning ( Enterprise )
• Immutable Infrastructure

20. What is Terraform ?
https://www.slideshare.net/SushilKumar545/hashicorpterraformpackervaultby-sushil

21. Demo on AWS