Jon Chery
496303471d
---ci--- project: atelier phase: 7 milestone: v0.1 status: complete phase_role: final milestone_complete: true requirements: covered: [ATELIER-01, ATELIER-02, ATELIER-03, ATELIER-04, ATELIER-05, ATELIER-06, ATELIER-07, ATELIER-08, ATELIER-09, ATELIER-10, ATELIER-11, ATELIER-12, ATELIER-13, ATELIER-14, ATELIER-15, ATELIER-16, ATELIER-17, ATELIER-18, ATELIER-19, ATELIER-20, ATELIER-21, ATELIER-22, ATELIER-23, ATELIER-24, ATELIER-25, ATELIER-26, ATELIER-27, ATELIER-28, ATELIER-29, ATELIER-30, ATELIER-31, ATELIER-32, ATELIER-33, ATELIER-34, ATELIER-35] partial: [] ship: milestone: v0.1 type: NFR tag: v0.0.7 merge: milestone/v0.1-atelier -> main release: https://git.cloudinit.dev/cloudinit-bot/atelier/releases/tag/v0.0.7 ---/ci--- Milestone v0.1 — Initial Framework (NFR, complete). 8 core principles (C1-C8), 11 domains, 110 domain principles, 27 derived docs, 4 good + 3 bad examples, 4 language docs, full matrix, 3 review docs. All 35 requirements covered. 7 patches (v0.0.0 pre-execution through v0.0.7 final). v0.0.7 IS the v0.1.0 milestone release.
43 lines
1.2 KiB
Markdown
43 lines
1.2 KiB
Markdown
# DevOps — First Principles
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## 1. The Principles
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### P1. Reproducibility
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Any environment can be rebuilt from source. Configuration is
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declarative and versioned.
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### P2. Automation
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Manual steps are bugs waiting to happen. Everything is scripted,
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testable, repeatable.
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### P3. Observability
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You cannot operate what you cannot see. Logs, metrics, and traces
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are first-class.
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### P4. Rollback First
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Every deploy has a known-good rollback path. Rollback is rehearsed,
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not improvised.
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### P5. Progressive Delivery
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Changes go out gradually — canary, blue-green, feature flags.
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Big-bang deploys are for prototypes.
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### P6. Configuration as Code
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No snowflake servers. No "this one is different". Configuration is
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in the repo.
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### P7. Immutability
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Build once, deploy many. Artifacts are immutable. Servers are not
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mutated in place.
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### P8. Security at Every Layer
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Scanning, signing, SBOM, and supply chain integrity are part of the
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pipeline, not bolt-ons.
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### P9. Documentation in the Pipeline
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The pipeline is the documentation. Reading the pipeline tells you
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how the system ships.
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### P10. Failure as Expected
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Design for the failure mode, not the happy path. Chaos engineering
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is a discipline. |