Git rebase lets you rewrite history with surgical precision. Immutable infrastructure demands that history never changes. When these two ideas meet, conflict is inevitable—but solvable.
A rebase in Git takes commits from one branch and applies them onto another in sequence. It creates a new commit chain. Old commits are replaced with new ones. This is perfect for keeping a branch linear and tidy. But in the world of immutable infrastructure, any change to history is a risk. Immutable means that once deployed, you do not alter the underlying servers, images, or configurations. Everything is replaced wholesale with a new version.
When working with infrastructure-as-code, every commit represents a full environment build. If you rebase after the fact, you are rewriting the timeline. That can break audit trails, destroy reproducibility, and cause unpredictable drift between environments.
The safest approach is to combine Git rebase and immutable infrastructure through strict workflows:
- Rebase only in feature branches before merging to main.
- Never rebase historical commits that have already provisioned resources.
- Use signed commits and tags tied to immutable build artifacts.
- Automate deploy pipelines to always consume a fresh artifact from the new commit chain.
This balance gives engineers clean, linear Git logs while keeping infrastructure untouched once deployed. Immutable infrastructure benefits from clear provenance; Git rebase benefits from clarity and order. Together, they form a workflow that is both maintainable and reliable.
Your source control should mirror the state of your infrastructure, without manual edits or half-rebuilt environments. Keep history clean, but let deployments stand immutable in the face of change.
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