terraform/website/docs/cli/state/recover.html.md

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docs	Recovering from State Disasters - Terraform CLI

Recovering from State Disasters

If something has gone horribly wrong (possibly due to accidents when performing other state manipulation actions), you might need to take drastic actions with your state data.

• The terraform force-unlock command can override the protections Terraform uses to prevent two processes from modifying state at the same time. You might need this if a Terraform process (like a normal apply) is unexpectedly terminated (like by the complete destruction of the VM it's running in) before it can release its lock on the state backend. Do not run this until you are completely certain what happened to the process that caused the lock to get stuck.

• The terraform state pull command and the terraform state push command can directly read and write entire state files from and to the configured backend. You might need this for obtaining or restoring a state backup.