Resource documentation reference in Terraform - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding Terraform resource documentation URLs

Which URL correctly points to the official Terraform documentation for the AWS S3 bucket resource?

A https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/s3_bucket

B https://aws.amazon.com/terraform/s3bucket/docs

C https://terraform.io/docs/aws/s3bucket

D https://registry.terraform.io/providers/aws/latest/docs/resources/bucket_s3

💡 Hint

Terraform official docs use registry.terraform.io with provider and resource path.

Terraform resource docs follow the pattern: registry.terraform.io/providers/{provider}/{version}/docs/resources/{resource_name}.

❓ Configuration

intermediate

Identifying correct resource attribute from documentation

You want to configure an AWS EC2 instance with a specific instance type. According to Terraform AWS provider documentation, which attribute sets the instance type?

A type_instance

B instance_type

C ec2_type

D vm_type

💡 Hint

Check the official AWS EC2 instance resource attributes in Terraform docs.

The attribute to specify the instance type is 'instance_type' as per Terraform AWS EC2 resource documentation.

❓ Architecture

advanced

Choosing the correct Terraform resource for a managed database

You want to provision a managed PostgreSQL database on AWS using Terraform. Which resource from the AWS provider documentation should you use?

A aws_rds_cluster

B aws_rds_cluster_instance

C aws_db_instance

D aws_postgresql_instance

💡 Hint

Look for the resource that supports single-instance managed databases.

The 'aws_db_instance' resource is used for single-instance RDS databases including PostgreSQL. 'aws_rds_cluster' and 'aws_rds_cluster_instance' are for clustered databases.

❓ security

advanced

Referencing sensitive attributes in Terraform resource documentation

According to Terraform AWS provider documentation, which attribute of the 'aws_iam_access_key' resource is marked as sensitive and should not be exposed in logs or outputs?

A secret

B key_id

C access_key_id

D secret_access_key

💡 Hint

Sensitive attributes usually contain secret keys or passwords.

The 'secret_access_key' attribute contains the secret part of the IAM access key and is marked sensitive in Terraform documentation.

❓ service_behavior

expert

Understanding lifecycle behavior from Terraform resource documentation

According to Terraform AWS provider documentation, what happens if you change the 'subnet_id' attribute of an 'aws_instance' resource in your configuration and apply it?

A Terraform will destroy the existing instance and create a new one in the new subnet.

B Terraform will update the subnet of the existing instance without downtime.

C Terraform will ignore the change and keep the instance in the original subnet.

D Terraform will throw an error and refuse to apply the change.

💡 Hint

Check the documentation for attributes that force resource replacement.

Changing 'subnet_id' forces a new resource because AWS does not allow moving an instance between subnets. Terraform destroys and recreates the instance.