Why automated Terraform matters - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to initialize a Terraform working directory.

Terraform

terraform [1]

Drag options to blanks, or click blank then click option'

Aapply

Binit

Cplan

Ddestroy

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'apply' before initializing causes errors.

Confusing 'plan' with initialization.

The terraform init command sets up the working directory for Terraform to manage infrastructure.

2fill in blank

medium

Complete the code to create an execution plan without applying changes.

Terraform

terraform [1]

Drag options to blanks, or click blank then click option'

Aplan

Bvalidate

Cdestroy

Dapply

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'apply' runs changes immediately.

Using 'validate' only checks syntax.

The terraform plan command shows what changes Terraform will make without applying them.

3fill in blank

hard

Fix the error in the command to apply changes automatically without confirmation.

Terraform

terraform apply [1]

Drag options to blanks, or click blank then click option'

A-confirm

B-force

C-yes

D-auto-approve

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-yes' is not a valid Terraform flag.

Using '-force' or '-confirm' causes errors.

The -auto-approve flag applies changes without asking for confirmation.

4fill in blank

hard

Fill both blanks to define a Terraform resource with a name and type.

Terraform

resource "[1]" "[2]" {
  # resource configuration
}

Drag options to blanks, or click blank then click option'

Aaws_instance

Bmy_server

Cgoogle_compute_instance

Dexample

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping resource type and name.

Using invalid resource types.

The first blank is the resource type like aws_instance. The second blank is the resource name like my_server.

5fill in blank

hard

Fill all three blanks to output the public IP of an AWS instance after deployment.

Terraform

output "[1]" {
  value = [2].[3]
}

Drag options to blanks, or click blank then click option'

Ainstance_ip

Baws_instance.my_server

Cpublic_ip

Dprivate_ip

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'private_ip' instead of 'public_ip' when public IP is needed.

Incorrect resource address format.

The output block names the output as instance_ip. The value accesses the public_ip attribute of the resource aws_instance.my_server.

Practice

1. Why is automating Terraform important when managing cloud resources?

easy

A. It saves time and reduces mistakes by using code to manage resources.

B. It makes cloud resources more expensive to run.

C. It removes the need for any human oversight.

D. It only works with one cloud provider.

Solution

1. Step 1: Understand automation benefits

   Automation helps by saving time and reducing errors compared to manual steps.

2. Step 2: Connect automation to Terraform

   Terraform uses code to manage cloud resources, making automation effective and consistent.

3. Final Answer:

   It saves time and reduces mistakes by using code to manage resources. -> Option A

4. Quick Check:

   Automation = saves time and reduces mistakes [OK]

Hint: Automation means less manual work and fewer errors [OK]

Common Mistakes:

• Thinking automation increases cost
• Believing automation removes all human checks
• Assuming automation works only for one cloud

2. Which Terraform command initializes a working directory to prepare for resource management?

easy

A. terraform init

B. terraform plan

C. terraform destroy

D. terraform apply

Solution

1. Step 1: Identify command purpose

   terraform init sets up the directory with necessary plugins and backend configuration.

2. Step 2: Differentiate from other commands

   terraform apply makes changes, terraform plan previews changes, terraform destroy removes resources.

3. Final Answer:

   terraform init -> Option A

4. Quick Check:

   Initialize = terraform init [OK]

Hint: Init means start or prepare [OK]

Common Mistakes:

• Confusing init with apply or plan
• Thinking destroy initializes
• Using plan to initialize

3. Given this Terraform workflow:

terraform init
tf plan
tf apply

What is the main purpose of terraform plan?

medium

A. To apply changes to cloud resources immediately.

B. To initialize the Terraform working directory.

C. To preview changes Terraform will make without applying them.

D. To delete all existing cloud resources.

Solution

1. Step 1: Understand each command role

   terraform init prepares the environment, terraform apply makes changes, terraform plan previews changes.

2. Step 2: Identify plan's purpose

   terraform plan shows what changes will happen without applying them, helping avoid surprises.

3. Final Answer:

   To preview changes Terraform will make without applying them. -> Option C

4. Quick Check:

   Plan = preview changes [OK]

Hint: Plan means preview before applying [OK]

Common Mistakes:

• Confusing plan with apply
• Thinking plan initializes
• Assuming plan deletes resources

4. You run terraform apply but get an error saying the backend is not configured. What is the likely cause?

medium

A. You ran terraform plan instead of apply.

B. You have no internet connection.

C. Your Terraform version is too new.

D. You forgot to run terraform init first.

Solution

1. Step 1: Understand backend configuration role

   Terraform backend stores state; it must be set up before applying changes.

2. Step 2: Identify command to configure backend

   terraform init configures backend and downloads providers; skipping it causes errors.

3. Final Answer:

   You forgot to run terraform init first. -> Option D

4. Quick Check:

   Backend error = missing terraform init [OK]

Hint: Always run init before apply [OK]

Common Mistakes:

• Ignoring the need for init
• Blaming plan command
• Assuming version or internet issues

5. A team wants to keep their cloud setup consistent and avoid manual errors. Which practice best supports this goal using Terraform?

hard

A. Manually creating resources in the cloud console.

B. Writing Terraform code and automating terraform plan and apply in a pipeline.

C. Running terraform apply only on local machines without version control.

D. Using different Terraform versions for each team member.

Solution

1. Step 1: Identify goal of consistency and error reduction

   Consistency comes from using code and automation, avoiding manual steps.

2. Step 2: Match practice to goal

   Automating plan and apply in a pipeline ensures repeatable, error-free deployments shared by the team.

3. Final Answer:

   Writing Terraform code and automating terraform plan and apply in a pipeline. -> Option B

4. Quick Check:

   Automation + code = consistency [OK]

Hint: Automate Terraform in pipelines for team consistency [OK]

Common Mistakes:

• Relying on manual cloud console changes
• Skipping version control
• Using inconsistent Terraform versions