Terraform apply -replace flag - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the -replace flag do in terraform apply?

The -replace flag forces Terraform to destroy and recreate a specific resource during the apply process.

beginner

How do you specify a resource to replace using the -replace flag?

You specify the resource address, like -replace=aws_instance.example, to tell Terraform which resource to recreate.

intermediate

Why would you use the -replace flag instead of manually deleting a resource?

Using -replace lets Terraform handle the destruction and recreation safely, keeping the state consistent and avoiding manual errors.

intermediate

Can you replace multiple resources in one terraform apply command?

Yes, you can use multiple -replace flags to replace several resources at once.

advanced

What happens if you use -replace on a resource that does not exist in the state?

Terraform will show an error because it cannot replace a resource that is not tracked in the state.

What is the main purpose of the -replace flag in terraform apply?

A To force recreation of a resource

B To skip a resource during apply

C To update Terraform version

D To backup the state file

The -replace flag forces Terraform to destroy and recreate the specified resource.

How do you specify which resource to replace?

A By resource ID in the cloud provider

B By resource tag

C By resource name in the configuration file

D By resource address in Terraform state

You specify the resource address as tracked in the Terraform state, like aws_instance.example.

Can you replace multiple resources in one command?

A Yes, by using multiple <code>-replace</code> flags

B Yes, by listing resources separated by commas

C No, only one resource at a time

D No, you must run separate apply commands

Terraform allows multiple -replace flags in one apply command to replace several resources.

What happens if you try to replace a resource not in the state?

A Terraform creates a new resource

B Terraform shows an error

C Terraform ignores it

D Terraform deletes all resources

Terraform will show an error because it cannot replace a resource that is not tracked in the state.

Why is using -replace safer than manually deleting a resource?

A It updates the provider automatically

B It backs up the resource

C It keeps Terraform state consistent

D It speeds up apply time

Using -replace keeps the Terraform state consistent by managing destruction and recreation properly.

Explain how the -replace flag works in terraform apply and when you might use it.

Think about how Terraform manages resources and state.

Describe the steps Terraform takes when you run terraform apply -replace=resource.address.

Focus on the lifecycle of the resource during apply.