Review: Monitoring -- AlertManager, blackbox, Grafana, PrometheusRules (re-review)

review-1697-2026-07-02-r2 Review

review approved

Verdict: APPROVED

Re-review of board item #1697. Previous review (review-1697-2026-07-02) returned NEEDS_REFINEMENT with 3 issues. All 3 have been resolved.

Previous Issues -- Resolution Status

# Tag Issue Status
1 <code>[SCOPE]</code> Create architecture note <code>arch-observability</code> FIXED -- note exists (id 2344), comprehensive content with Mermaid diagram, component table, key decisions, and related links. Project: kalshi-assistant.
2 <code>[BODY]</code> Add dependencies to issue body FIXED -- Lineage section updated: "Depends on #7 (service onboarding), #9 (kustomize), #1 (Rails app /up endpoint)."
3 <code>[BODY]</code> Add cross-repo note FIXED -- Callout block added: "Cross-repo: All code changes target ldraney/pal-e-platform. PR targets pal-e-platform, not this repo."

Template Completeness

  • [x] Type -- Feature
  • [x] Lineage -- Depends on #7, #9, #1 (updated from "Standalone")
  • [x] Repo -- ldraney/pal-e-platform
  • [x] User Story
  • [x] Context -- includes cross-repo callout
  • [x] File Targets -- 2 targets (1 modify, 1 create)
  • [x] Feature Flag -- none
  • [x] Acceptance Criteria -- 4 items
  • [x] Test Expectations -- tofu plan
  • [x] Constraints -- pattern matching, Telegram receiver naming, dashboard JSON format
  • [x] Checklist
  • [x] Related

Traceability

  • [x] story:platform-setup label -- Platform Setup
  • [x] story note verified -- found in project-kalshi-assistant user-stories section (key: platform-setup, role: Developer, metric: CI/CD push-to-deploy in under 10 minutes)
  • [x] arch:observability label -- observability component
  • [x] arch note verified -- arch-observability note exists in pal-e-docs (id 2344, project kalshi-assistant). Includes Mermaid diagram, component table (ServiceMonitor, PrometheusRules, AlertManager, blackbox-exporter, Grafana dashboards), key decisions, and related links.
  • [x] Forgejo issue -- https://forgejo.tail5b443a.ts.net/ldraney/kalshi-assistant/issues/12, open
  • [x] arch-deployment-kalshi-assistant (mentioned in Related) -- verified, note exists (id 2327)

File Targets

  • [x] terraform/modules/monitoring/main.tf -- verified: exists (28k), landscaping-assistant pattern confirmed (AlertManager route/receiver, blackbox probe, dashboard ConfigMap, PrometheusRule). No kalshi-assistant content yet (work not started).
  • [x] terraform/dashboards/kalshi-assistant-golden-signals.json -- to create: dashboards directory exists with 8 existing dashboards including landscaping-assistant-golden-signals.json as the template to follow.

Repo Placement

Cross-repo filing is now explicitly documented. Issue filed on ldraney/kalshi-assistant, code changes target ldraney/pal-e-platform. The ### Repo field and the new cross-repo callout make this unambiguous for implementing agents. Single repo affected (pal-e-platform), so no multi-issue coordination needed.

Dependencies

All dependencies now documented in Lineage section:
  • #7 / board #1694 (Service onboarding -- namespace, Harbor, ArgoCD, Tailscale funnel) -- sprint:1. Namespace must exist.
  • #9 / board #1695 (Kustomize deployment overlays -- prod and dev) -- sprint:2. ServiceMonitor provisioned here.
  • #1 / board #1686 (Rails app scaffold with Kalshi API client) -- sprint:1. Provides /up health endpoint for blackbox probe.
Sprint:3 placement is correct given all 3 dependencies are sprint:1 or sprint:2. All dependencies are on the same board (board-kalshi-assistant), currently in backlog.

Acceptance Criteria

4 criteria, all agent-verifiable:
  • AlertManager routing -- verifiable via tofu plan output
  • Blackbox probe endpoint -- verifiable via tofu plan; runtime verification requires deployed app
  • Grafana dashboard golden signals -- verifiable by checking ConfigMap creation in plan
  • PrometheusRule thresholds -- verifiable via tofu plan checking rule expressions
All criteria are well-scoped and measurable. Runtime verification depends on upstream deployments but infrastructure-level verification is self-contained.

Blast Radius

Low. Changes follow the established landscaping-assistant pattern exactly. All modifications are additive:
  • New AlertManager route and receiver (append to existing arrays)
  • New blackbox probe target (append to existing targets)
  • New dashboard JSON file (no modifications to existing dashboards)
  • New PrometheusRule kubernetes_manifest (no modifications to existing rules)
No downstream consumers affected.

Decomposition Assessment

No decomposition needed:
  • 2 file targets in 1 repo -- under threshold
  • 4 acceptance criteria -- under threshold
  • Estimated agent work: 3-5 minutes (pattern copy from landscaping-assistant, adapt names/namespaces) -- within 5-minute rule

Recommendation

No action needed. All previous issues resolved. Ticket is ready for implementation.