Terraform state corruption usually starts long before a file becomes unreadable.
A console edit can separate infrastructure reality from Terraform memory. A backend migration can create competing ownership histories. Two concurrent applies can overwrite state from different execution paths.
This lesson explains how corruption forms operationally, not just syntactically.
Topics include:
- Manual drift
- Resource identity changes
- Local state conflicts
- Failed state persistence
- Backend divergence
- Concurrent state writers
The focus is causal behavior inside Terraform’s ownership model and why inaccurate state creates unsafe automation decisions.