Using Loops with `for_each` and `count`
Learn to provision multiple instances of a resource or module using `count` and `for_each` to handle collections and maps efficiently.
Introduction to Loops
When managing infrastructure with Terraform, you often need to create multiple similar resources. Imagine needing 10 web servers or 5 database instances. Writing the same code block repeatedly would be tedious and error-prone!
This lesson introduces two powerful Terraform features: count and for_each. They help you provision multiple resources efficiently, keeping your configurations clean and scalable.
Why Use `count` and `for_each`?
Using loops like count and for_each offers significant benefits:
- Reduced Duplication: Write infrastructure code once and reuse it.
- Improved Readability: Your configurations become much cleaner and easier to understand.
- Scalability: Easily adjust the number of resources by changing a single value or collection.
- Consistency: Ensure all similar resources are configured identically.
All lessons in this course
- Using Loops with `for_each` and `count`
- Terraform Built-in Functions
- Conditional Expressions and Splats
- Dynamic Blocks for Nested Configuration