Explain the Terraform State File locking mechanism in AWS.

Question

Accepted Answer

Terraform State File locking mechanism in AWS ensures concurrent access to state files is managed safely.

Terraform uses a locking mechanism to prevent concurrent access to state files
Locking is achieved using a DynamoDB table in AWS
When a user runs Terraform, it acquires a lock on the state file in DynamoDB
Other users attempting to run Terraform on the same state file will be blocked until the lock is released
This ensures that only one user can modify the state file at a time, preventing conflicts and data corruption

Accepted Answer

Terraform State lock can be maintainer using Amazon DynamoDB with Primary key as LockID and S3 bucket as remote backend to store the state file. Terraform State File maintains the current state of the Infra.