Write
Declare providers, resources, data sources, variables, outputs and module boundaries.
DevOps module 04
Infrastructure changes need evidence.
Terraform is valuable when state, review, policy and lifecycle discipline are treated as first-class controls.
Init
Download providers, initialise the backend and validate dependency locks.
Plan
Review the exact proposed change, replacements, deletions and unknown values.
Apply
Execute an approved plan with controlled credentials and auditable output.
State
Protect remote state with locking, encryption, access control and recovery.
Operate
Detect drift, upgrade providers carefully and refactor without recreating resources.
Production rules
Remote state
Never rely on an engineer's laptop as the production source of truth.
Plan review
Require peer review for destructive and replacement operations.
Separate environments
Keep clear state boundaries and credentials for development, test and production.
No manual drift
Import legitimate resources or revert unapproved console changes.