Jon Chery
50 lines
2.0 KiB
Markdown
50 lines
2.0 KiB
Markdown
# CI/CD — Derived Rules
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> Derives from `domains/devops/first-principles.md` P2 (Automation), P4 (Rollback First), P5 (Progressive Delivery).
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## The Pipeline is the Process (P2)
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- If it is not in the pipeline, it does not happen. Manual deploys are a bug.
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- The pipeline: lint → test → build → deploy → verify.
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- Every step is scripted, versioned, and reproducible. No "run this command on the server."
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## Lint (P2, core C2 Clarity)
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- Run the linter on every commit. Fail the build on lint errors.
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- Format check (prettier, gofmt, rustfmt). Format is not a debate; it is automated.
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- Security lint (eslint-plugin-security, bandit, gosec). Catch the obvious ones.
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## Test (P2, domains/testing)
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- Unit tests in the pipeline. Fast. Every commit.
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- Integration tests on merge to main. Slower. Every merge.
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- E2E tests before deploy. Slowest. Every deploy candidate.
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## Build (P7 Immutability)
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- Build once. The artifact is immutable. The same artifact goes to every environment.
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- The build is reproducible: same commit → same artifact (modulo timestamps, which are stripped).
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- Build artifacts are signed and stored. A deploy is a reference to an artifact, not a rebuild.
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## Deploy (P4 Rollback First, P5 Progressive Delivery)
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- Every deploy has a rollback. The rollback is tested before the deploy.
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- Progressive: canary (1% → 10% → 100%), blue-green, or feature flags.
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- No big-bang deploys. A big-bang deploy is a rollback with no rehearsal.
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## Verify (P3 Observability)
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- After deploy, verify: health checks, smoke tests, metric watching.
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- A deploy is not "done" when the code is on the server. It is done when the metrics are healthy.
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- Auto-rollback on metric regression. The pipeline watches; humans sleep.
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## What Violates CI/CD Discipline
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| Violation | Principle |
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|-----------|-----------|
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| Manual deploy script | P2 Automation |
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| No rollback path | P4 Rollback First |
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| Big-bang deploy to prod | P5 Progressive Delivery |
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| Rebuild per environment | P7 Immutability |
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| Deploy without health check | P3 Observability |
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| No lint in CI | P2, C2 | |