If you have been handed the Acquiring state lock error message about ConditionalCheckFailedException: The conditional request then you have 2 options for fixing it!
The error looks something like this:
Acquiring state lock. This may take a few moments...
╷
│ Error: Error acquiring the state lock
│
│ Error message: ConditionalCheckFailedException: The conditional request
│ failed
│ Lock Info:
│ ID: 3324a6cb-7401-3194-d650-fxxxxxx3864
│ Path: xxxx-terraformstate-nonprod/env:/xxxx/terraform.tfstate
│ Operation: OperationTypeApply
│ Who: root@ip-100-65-2-165
│ Version: 1.0.4
│ Created: 2021-11-29 21:00:37.652114035 +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.
There are 3 possible ways to fix this
In short, you want to delete the lock associated. This is achieved by forcing an unlock.
Option 1: Force Unlock – Recommended
You can force unlock the state using the following:
terraform force-unlock -force 3324a6cb-7401-3194-d650-fxxxxxx3864
Option 2: Relaunch the Plan
You can run the plan again with a -lock=false as following:
terraform plan -lock=false ...
Option 3: Make sure you use the right profile!
Sometimes everything seems correct, but it turns out you are using a different profile!
AWS_PROFILE=some_other_profile
Force Unlock still not working?
Sometimes you can get another error when trying to force unlock this:Failed to unlock state: failed to retrieve lock info: unexpected end of JSON input
This usually means that you are in the wrong terraform workspace .
View all workspaces available: terraform workspace list
Switch to a workspace: terraform workspace select <>
Now you can try and force unlock again.
If you were successful, then you will get the following message:
Terraform state has been successfully unlocked!
The state has been unlocked, and Terraform commands should now be able to
obtain a new lock on the remote state.