03-s3.md

Lab: S3

Help for the VSCode editor.

1. Information only.

2. Let's first inspect the configuration files in the directory called MCU.
   What is the AWS region configured for use in the provider block? (Assuming we do not pass in additional variables during command execution)

   1. Navigate to the directory terraform-projects/S3-Buckets/MCU/ in the Explorer pane

   2. We are asked about the provider and variables, so inspect all of providers.tf, variables.tf and terraform.tfvars. Assuming no TF_VAR_ environment variable is set, and terraform is run without either of -var or -var-file, then you should be able to determine the region.

   3. Reveal

      us-east-1

3. There is a resource block configured in the main.tf file in this configuration directory. What is the resource name that will be provisioned when we run terraform apply?

   Remember that the resource name is a property of the resource statement, not an argument within the block (i.e. not what lies between { and })

   Reveal

   marvel-cinematic-universe

4. What is the current state of this configuration directory?

   We can solve this with the following flow:

   1. Is there a terraform.tfstate file?
      • Yes - an apply has been run at least once, so it is certainly initialized.
        • Does the state file contain resources?
          • Yes - Resources Provisioned
          • No - Resources not provisioned
      • No - Move on
   2. Is there a .terraform directory, and does it contain plugin directories
      • Yes - Directory Initialized
      • No - Directory not initialized
5. What is the name of the s3 bucket that has been created by this configuration?

   Examine main.tf and look at the resource arguments.

6. What is the DNS domain name that is created for this bucket?

   Run terraform show inside this configuration directory and inspect the attribute called bucket_domain_name.

   cd /root/terraform-projects/S3-Buckets/MCU
   terraform show

7. Information only

8. The main.tf file is empty. Use it to create a new S3 bucket...

   Specifications

   • resource name: dc_bucket
   • bucket name: dc_is_better_than_marvel

   1. Navigate to the DC folder in the Explorer pane and open main.tf

   2. Create the resource block. Refer to the documentation if needed.

      Reveal

      resource "aws_s3_bucket" "dc_bucket" {
          bucket = "dc_is_better_than_marvel"
      }
      

   3. Try to create the bucket

      cd /root/terraform-projects/S3-Buckets/DC
      terraform init
      terraform plan
      terraform apply

   It's OK of you get an error - move on to the next question.

9. Why did the terraform apply command fail?

   Refer to the error message from the previous terraform apply

10. Information only

11. Let's fix that now and change the bucket name so that it uses dashes (-) instead of underscore(_).

    1. Replace all _ with - in the bucket name so it now reads dc-is-better-than-marvel

    2. Deploy

       cd /root/terraform-projects/S3-Buckets/DC
       terraform init
       terraform plan
       terraform apply

12. Navigate to the pixar directory in Explorer pane.

13. Information only

14. Upload woody.jpg to the existing bucket pixar-studios-2020

    Specifications

    • Bucket: pixar-studios-2020
    • Key: woody.jpg
    • Source: /root/woody.jpg

    For this we need to use the aws_s3_object resource which represents the state of a file in an S3 bucket. Note that the solution tab on the lab page suggests to use the aws_s3_bucket_object resource, however this is deprecated in favour of aws_s3_object.

    1. Navigate to the Pixar folder in Explorer pane

    2. Create the resource per the specfication. We haven't been given a ame for the resource in the question, so let's just call it upload

       Reveal

       resource "aws_s3_object" "upload" {
           bucket = "pixar-studios-2020"
           key = "woody.jpg"
           source = "/root/woody.jpg"
       }
       

    3. Deploy

       cd /root/terraform-projects/S3-Buckets/Pixar
       terraform init
       terraform plan
       terraform apply