Troubleshooting a Terraform Variable Interpolation Error

Libraries: If you want this lab, consider one of these libraries.
Cloud

Troubleshooting a Terraform Variable Interpolation Error

Hey there, Gurus! Welcome to the lab! This lab will demonstrate how to troubleshoot a Terraform variable interpolation error. We will attempt to go through the different stages of deployment to try and deploy our configuration and work through the interpolation error until we have successfully deployed our resources.

Get started Contact sales

Lab Info

Level

Intermediate

Last updated

Sep 19, 2025

Duration

30m

Challenge

Format Your Terraform Configurations
1. In the terminal, once logged into your instance, change to the terraform directory.
2. In the terraform directory, edit the main.tf file and add in your ami ,subnet_id, and vpc from the resource_ids.txt file.
3. Run the terraform fmt command.
Challenge

Fix the Interpolation Error
1. After running the terraform fmt command, you should get an error. Read the error and go to the line in the main.tf file where the error is.
2. Fix the syntax error for the tag name variable.
3. Run terraform fmt command. If the error is fixed, then move on to the next stage in your deployment until all of your resources are deployed successfully.
4. Once your resources are deployed without any errors, the lab is then complete.

About the author

Pluralsight Skills

Pluralsight Skills gives leaders confidence they have the skills needed to execute technology strategy. Technology teams can benchmark expertise across roles, speed up release cycles and build reliable, secure products. By leveraging our expert content, skill assessments and one-of-a-kind analytics, keep up with the pace of change, put the right people on the right projects and boost productivity. It's the most effective path to developing tech skills at scale.

Real skill practice before real-world application

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.

Learn by doing

Engage hands-on with the tools and technologies you’re learning. You pick the skill, we provide the credentials and environment.

Follow your guide

All labs have detailed instructions and objectives, guiding you through the learning process and ensuring you understand every step.

Turn time into mastery

On average, you retain 75% more of your learning if you take time to practice. Hands-on labs set you up for success to make those skills stick.