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218 lines
18 KiB
HTML
218 lines
18 KiB
HTML
<!doctype html>
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<html lang="en"><meta charset="utf-8">
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<meta name="policy-source-revision" content="883533ed8af1703cc9bb4a2b24137e325bbbda47">
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<meta name="policy-source-digest" content="7e1fc5aedd7294192d8702a22b9f205e5bae20793836fdc48c0c071d10d7ab9d">
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<title>Wave 1 rail-kubernetes Boundary</title>
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<style>
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<div class="wrap"><header><div class="eyebrow"><span>RMASTER-ADR-0002</span> <span class="stat">accepted · accepted-1</span> <span>railiance-master</span> <span>reviewed 2026-07-25</span><span>generated from canonical source — do not edit</span></div><h1>Wave 1 rail-kubernetes Boundary</h1><p class="sub">Source: <code>railiance-master · docs/adr/ADR-0002-rail-kubernetes-wave-1-boundary.md · 883533ed8af1703cc9bb4a2b24137e325bbbda47</code></p><p class="sub">Review due: 2027-01-25</p></header><div class="layout"><nav class="rail" aria-label="Sections"><ol><li><a href="#context"><span class="n">·</span>Context</a></li><li><a href="#decision"><span class="n">·</span>Decision</a></li><li><a href="#consequences"><span class="n">·</span>Consequences</a></li><li><a href="#notes"><span class="n">·</span>Notes</a></li></ol></nav><main><p>Date: 2026-07-25 Status: Accepted</p>
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<section id="context"><h2>Context</h2>
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<p>Railiance wants <code>rail-*</code> repos to represent workload execution contracts rather than abstract naming ideas.</p>
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<p>Today, the concrete Kubernetes workload contract already exists, but it is embedded in <code>railiance-cluster</code>. That repo currently owns both:</p>
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<ul><li>the S2 Kubernetes substrate</li><li>and the generic workload lifecycle and tooling that run on top of it</li></ul>
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<p>That mixed ownership is the main blocker to introducing the first real rail.</p>
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</section>
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<section id="decision"><h2>Decision</h2>
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<p>Railiance will treat <code>rail-kubernetes</code> as the wave-1 base rail.</p>
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<p>The boundary is:</p>
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<ul><li><code>railiance-cluster</code> owns the Kubernetes substrate and its prerequisites</li><li><code>rail-kubernetes</code> owns the generic workload-on-Kubernetes execution contract</li></ul>
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<p>Workload-specific helper flows currently living in <code>railiance-cluster</code> are temporary exceptions and must be rehomed rather than carried forward as part of the generic rail.</p>
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</section>
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<section id="consequences"><h2>Consequences</h2>
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<h3>Positive</h3>
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<ul><li>The first real rail gains a concrete ownership boundary.</li><li><code>railiance-cluster</code> can return to a clean S2 substrate identity.</li><li>Future rails such as <code>rail-knative</code> get a stable base boundary to extend from.</li><li><code>rapp-*</code> repos gain a clearer execution-contract home for Kubernetes-managed workloads.</li></ul>
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<h3>Required Follow-On Work</h3>
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<ul><li>Create the detailed <code>rail-kubernetes</code> boundary contract and migration map.</li><li>Split generic lifecycle docs, schema, examples, and Stage 1-3 tooling out of <code>railiance-cluster</code>.</li><li>Leave a compatibility path so current users of the cluster repo are not broken during the migration.</li><li>Rehome workload-specific helpers that do not belong in either boundary.</li></ul>
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<h3>Constraints</h3>
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<ul><li><code>rail-kubernetes</code> must not take ownership of cluster bootstrap, operators, or kubeconfig management.</li><li><code>railiance-cluster</code> must not continue as the owner of generic workload promotion semantics after the split.</li><li><code>rail-knative</code> should follow this cleanup, not bypass it.</li></ul>
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</section>
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<section id="notes"><h2>Notes</h2>
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<p>This ADR does not require all current files to move immediately.</p>
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<p>It requires the ownership line to be explicit now, so practical repo separation can proceed without ambiguity.</p>
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</section><footer><span>RMASTER-ADR-0002 · accepted-1 · accepted</span><span>railiance-master · docs/adr/ADR-0002-rail-kubernetes-wave-1-boundary.md · 883533ed8af1703cc9bb4a2b24137e325bbbda47</span></footer></main></div></div></html>
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