When running terraform plan, the following error is thrown:-
Acquiring state lock. This may take a few moments... Error: Error locking state: Error acquiring the state lock: writing "gs://my/bucket/terraform.tfstate/default.tflock" failed: googleapi: Error 412: Precondition Failed, conditionNotMet Lock Info: ID: 1234567890 Path: gs://my/bucket/folder/terraform.tfstate/default.tflock Operation: migration destination state Who: mike@machine Version: 0.12.12 Created: 2019-10-30 12:44:36.410366 +0000 UTC Info: Terraform acquires a state lock to protect the state from being written by multiple users at the same time. Please resolve the issue above and try again. For most commands, you can disable locking with the "-lock=false" flag, but this is not recommended.
One way is to disable locking by passing -lock=false flag.
However, if you are sure the lock isn’t properly released, to perform a force unlock, run this command:
terraform force-unlock [LOCK_ID]
In this case…
terraform force-unlock 1234567890