Intro to Infrastructure as Code

Learn the basics of infrastructure as code with Terraform, a scalable and efficient approach to provisioning and managing infrastructure, covering declarative and imperative methods, configuration files, and more.

Key takeaways

Terraform is infrastructure as code, provisioning and managing infrastructure in a repeatable process.
The primary advantage is it removes manual time-consuming efforts, increasing scalability.
Two main approaches: declarative and imperative, where one defines desired infrastructure, while the other defines a step-by-step plan.
Key to infrastructure as code is configuration files and providers like AWS or OpenTofu, and storing the state between local and remote systems.
Resources are managed with code, files, or network locations.
Ansible, on the other hand, handles configuration as a state that needs to be tracked and reverted.
For reapplying changes, apply is the tool, as well as providing a comparison plan before deploying.
OpenTofu provides a forked version, offering documentation and community involvement.
For securing sensitive information, a secure protocol is not suggested in storing credentials directly within code.
AWS has extensive resource list of modules that provide support, with community-created and contributed tools.
When you update variables, it shows up as resources in plan for updating in the process, whereas creating a resource for local setup is different, displaying resource not found errors, whereas redeploying over remote, is not tracked directly in AWS.
Other approaches exist with Pulumi (support for JavaScript, Python) but that has varying support on what languages that support that level.
Also, it could go through another tool where infrastructure has configuration and management options (i.e., Terraform on remote setup.

Intro to Infrastructure as Code

More talks