0. OPTIONAL - Create basic folder structure, if starting from scratch

chmod +x create_terraform_structure.sh ./create_terraform_structure.sh

1. Capture existing project information

Run all commands from /atlas_terraform/ location of root main.tf

terraform init

Import the existing project and bring it under the tf control:

terraform import module.project.mongodbatlas_project.example <PROJECT.ID>

For example,

terraform import module.project.mongodbatlas_project.example 65f617a6cdafb5108b9c6ef2

2. Create a MongoDB Atlas cluster in GCP region

Run all commands from /atlas_terraform/ location of root main.tf

terraform init terraform plan -var-file="terraform.tfvars" -target=module.cluster terraform apply -var-file="terraform.tfvars" -target=module.cluster terraform destroy -var-file="terraform.tfvars" -target=module.cluster

####### NOTES #######

Run the following command at any time to return all state lists:

terraform state list

For region name mappings please refer to the links below:

GCP: https://www.mongodb.com/docs/atlas/reference/google-gcp/

AWS: https://docs.atlas.mongodb.com/reference/amazon-aws/

Azure: https://docs.atlas.mongodb.com/reference/microsoft-azure/

Use Terraform Workspaces (for environment separation) Workspaces let you maintain multiple state files (e.g., dev, staging, prod) under the same configuration.

You can switch between workspaces using:

terraform workspace select dev terraform plan terraform apply This way, the root config is the same, but states are isolated per workspace.