Which method could you use to identify which VM instance Terraform manages if you found two servers with the same name outside Terraform?

Which method could you use to identify which VM instance Terraform manages if you found two servers with the same name outside Terraform?

• A. Run terraform taint/code on all the VMs to recreate them
• B. Update the code to include outputs for the ID of all VMs, then run terraform plan to view the outputs
• C. Run terraform state list to find the names of all VMs, then run terraform state show for each of them to find which VM ID Terraform manages
• D. Use terraform refresh/code to find out which IDs are already part of state

Answer: (C)

Terraform state is the truth about what resources Terraform manages. If two VM instances share a name outside Terraform, you can’t rely on the name to tell you which one Terraform owns. The right approach is to inspect the state: list the resources Terraform knows about, then show each resource to read its attributes, including the cloud provider’s resource ID. The VM ID Terraform records will tell you exactly which external VM is under Terraform’s management because IDs are unique per resource. By matching the IDs you see in the state with the IDs of the two external VMs, you identify the one Terraform is tracking.

Terraform state is the truth about what resources Terraform manages. If two VM instances share a name outside Terraform, you can’t rely on the name to tell you which one Terraform owns. The right approach is to inspect the state: list the resources Terraform knows about, then show each resource to read its attributes, including the cloud provider’s resource ID. The VM ID Terraform records will tell you exactly which external VM is under Terraform’s management because IDs are unique per resource. By matching the IDs you see in the state with the IDs of the two external VMs, you identify the one Terraform is tracking.