Скачать или смотреть Creating Multiple Resources with Terraform Modules: A Step-by-Step Guide

Learn how to efficiently create and reference multiple resources using Terraform modules in this comprehensive guide. Ideal for both beginners and advanced users!
---
This video is based on the question https://stackoverflow.com/q/64992729/ asked by the user 'wiwa1978' ( https://stackoverflow.com/u/2722090/ ) and on the answer https://stackoverflow.com/a/65016005/ provided by the user 'mariux' ( https://stackoverflow.com/u/2157547/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Terraform modules: creating multiple resources with modules and reference each other

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Creating Multiple Resources with Terraform Modules: A Step-by-Step Guide

Terraform is a powerful tool for infrastructure as code, allowing developers to manage and provision resources in a systematic way. However, when managing resources that interlink, such as tenants and schemas, things can get a bit complex. In this guide, we will walk through how to create multiple resources using Terraform modules and how to reference them properly. Let’s dive in!

The Problem: Referencing Resources across Modules

When working with multiple tenants and schemas within Terraform, it's crucial to establish a clear relationship between them. In our case, we have a tenants variable and a schemas variable structured as maps. The challenge arises when we try to reference these tenant resources in the schema definitions.

Understanding the Variables

We begin with these variable definitions for tenants and schemas:

[[See Video to Reveal this Text or Code Snippet]]

Here, each schema must refer correctly to its corresponding tenant with identifiers like tenant1 or tenant2.

Solution: Properly Referencing Tenant IDs

To dynamically link schemas to the respective tenants, we need to restructure the tenant references in the schema variable. This involves utilizing the outputs from the tenant module correctly. Here’s how we can do this:

Step 1: Update the Tenant Module Call

In the root module, we can call the tenant module with a for_each loop like this:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Define the Schema Module Call

Next, we need to set up the schema module call. The key is to use the tenant IDs defined in the schemas variable:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Output Definitions

Finally, we should define our outputs to verify that everything is working as intended. Here’s an example output definition:

[[See Video to Reveal this Text or Code Snippet]]

This structured approach allows us to efficiently reference tenant resources in our schemas without hitting variable reference errors.

Expected Results

Once we apply these configurations, we will see outputs similar to:

[[See Video to Reveal this Text or Code Snippet]]

This output confirms that our schemas are successfully linked to the correct tenants.

Conclusion

In this guide, we explored how to create multiple resources with Terraform modules while properly referencing each other. By following structured conventions and taking advantage of Terraform's powerful functionality, we can manage complex infrastructure setups more straightforwardly. Whether you’re new to Terraform or looking to refine your skills, mastering the use of modules is essential for effective infrastructure as code.

Feel free to jump into your next Terraform project and apply these concepts to see how they can simplify your infrastructure management!