tegwick
4ecf211524
Fills the gap identified in the 2026-08-11 Railiance architecture assessment: five layers declare they intend to be self-evidencing or auditable, and nothing owned the place that evidence goes. The live cluster has no monitoring namespace at all. Positions telemetry as the evidence plane - it owns the signal, not the meaning of the signal, so conformance rules stay with the repos that own them. Flags stack-dimension placement as an open question for railiance-master rather than asserting a level, so this repo does not repeat railiance-forge's unplaced state. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
103 lines
3.5 KiB
Markdown
103 lines
3.5 KiB
Markdown
# SCOPE
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> This file helps you quickly understand what this repository is about,
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> when it is relevant, and when it is not.
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> It is intentionally lightweight and may be incomplete.
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---
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## One-liner
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Observability for Railiance — monitoring, metrics, logs, traces, and alerting that turn running behaviour into evidence and give the self-organizing control loop a signal to close on.
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---
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## Core Idea
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Five Railiance layers independently declare that they intend to be
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"self-evidencing" or "auditable". None of them owned the place that evidence
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goes, and the live cluster has no monitoring namespace at all. This repo fills
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that gap: it is the evidence plane the rest of the stack emits into.
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The distinction that keeps this repo honest: it owns **the signal**, not
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**the meaning of the signal**. Conformance rules and consistency checks belong
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to the repos that own those concerns; telemetry carries and surfaces their
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output.
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---
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## In Scope
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- Metrics collection, storage, and query
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- Log aggregation and retention
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- Tracing substrate
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- Alerting rules, routing, and notification paths
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- Dashboards and operator/agent-facing health surfaces
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- The standard emission contract other Railiance layers implement
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- Retention policy sufficient to prove restore drills and rollout holds
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- Signal exposure that automated control loops consume
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---
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## Out of Scope
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- Conformance and declaration-validation *rules* — owned by the repos whose
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declarations they check (`railiance-master`, family declaration validator)
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- The monitoring stack as a deployable package → `rapp-*` territory
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- Immutable audit custody — a separate concern with separate guarantees
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- Business, cost, and revenue analytics → `resource-control`, `fin-hub`
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- Incident management, on-call rotation, paging policy
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- Secret material of any kind (this layer is explicitly non-custodial)
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---
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## Relevant When
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- A layer needs somewhere to emit health, readiness, or drift signal
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- An expectation should raise an alert when violated
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- A control loop needs a signal to close on
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- Proving after the fact that a restore, rollout, or migration actually held
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## Not Relevant When
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- Defining what "correct" means for a declaration (that is the owning repo's job)
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- Packaging the monitoring workload for deployment (that is `rapp-*`)
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- Storing anything sensitive
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---
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## Current State
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- Status: **seeded** — `INTENT.md` written 2026-08-11, no implementation yet
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- The live cluster has no monitoring namespace; this is greenfield
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- Open: stack-dimension placement is undecided (see `INTENT.md`, "Open
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Placement Question") and belongs to `railiance-master`
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---
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## How It Fits
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- Upstream dependencies: `railiance-cluster` (S2) for runtime,
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`railiance-platform` (S3) for any stateful backing services it needs
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- Downstream consumers: every layer that declares itself self-evidencing, plus
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automated control loops and agent planning surfaces
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- Often used with: `railiance-master` (which owns what the signals must prove),
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`railiance-fabric` (graph and blast-radius context for an alert)
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---
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## Terminology
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- Preferred terms: evidence plane, emission contract, expectation-based alerting
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- Potentially confusing: "self-evidencing" is a property *other* layers aspire
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to; this repo provides the substrate that makes it checkable, it does not
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make the claims on their behalf
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---
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## Getting Oriented
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- Start with: `INTENT.md`
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- Then: `SCOPE.md`, `AGENTS.md`, `workplans/`
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- Context: `railiance-platform/history/2026-08-11-railiance-architecture-in-aspiration.md`
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records the assessment that identified this gap
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