Lab
A Cloud Guru

Create a null_resource to Use with Your Terraform Configuration

Hey there, Gurus! Welcome to the lab! This lab will demonstrate how to create a `null_resource` that can be used to call a script to run against your newly created Terraform resources. This will allow you to add some functionality and flexibility to your Terraform configuration and perform useful tasks. For instance, in this lab, we will query the status of our EC2 instance and display useful information as our resources get deployed.

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Path Info

Level

Intermediate

Duration

15m

Published

Jan 26, 2022

Challenge

Create a `null_resource`
1. In the terminal, once logged in to your instance, change to the Use_null_resource directory.
2. In the Use_null_resource directory, edit the variables.tf file and add in your ami and subnet_id from the resource_ids.txt file.
3. In the Use_null_resource directory, edit the main.tf file and add the following:
```
resource "null_resource" "ec2_status" {
  provisioner "local-exec" {
    command = "./scripts/health.sh"
  }
}
```
4. Examine the health.sh script in the Use_null_resource/scripts directory to see what it does.
5. Initialize your working directory.
6. Deploy your resources.
Challenge

Confirm Your EC2 Instance Has Been Created
1. Check your outputs to confirm your instance was deployed.
2. Check the lab-provided AWS console or use the AWS CLI to confirm your EC2 instance was created.

Author

A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

What's a lab?

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.