05-resource-attributes.md

Lab: Resource Attributes

Help for the VSCode editor.

1. Information only

2. What is the resource_type of the resource that's currently defined in the main.tf file?

   Refer to the documentation

3. Information only

4. Which of the following attributes are exported by the time_static resource?

   Refer to the documentation, and scroll down to the Read-Only section below Schema. Compare what is there with the given answers and select the correct one.

   Read-only attributes are exported by a resource, and can be referenced from other resources.

   Note that you cannot assign a value to a read-only attribute in a .tf configuration file.

5. How do we refer to the attribute called id using a reference expression?

   Know that a resource attribute reference is of the form
   resource_type.resource_name.attribute_name

   time_static.time_update.id

6. Now, update the main.tf file and add a new local_file resource called time with the following requirements

   • filename: /root/time.txt
   • content: Time stamp of this file is <id from time_update resource>

   For this, we need to add a local_file resource, like in previous labs. However this time, we need to refer to the ID of the time_static resource for the content, so we'll be using the expression we determined in Q5.

   1. Update main.tf and add new resource

      Reveal

      resource "local_file" "time" {
          filename = "/root/time.txt"
          content = "Time stamp of this file is ${time_static.time_update.id}"
      }
      

   2. Deploy the resources from the terminal

      cd /root/terraform-projects/project-chronos
      terraform init
      terraform plan
      terraform apply

7. What is the attribute called id that is created for the local file resource called time?

   Make use of the terraform show command and identify the attribute values.

   cd /root/terraform-projects/project-chronos
   terraform show

   This will print out the resources that were defined, along with the current values for all their attributes. Find the id attribute for the local_file resource.

8. What is the attribute called rfc3339 that is created for the time_static resource called time_update?

   Refer again to the output from terraform show. Find the rfc3339 attribute for the time_static resource.