Files
blackroad-operating-system/services/codex/entries/018-byzantine-agreement.md
Alexa Louise 9644737ba7 feat: Add domain architecture and extract core services from Prism Console
## Domain Architecture
- Complete domain-to-service mapping for 16 verified domains
- Subdomain architecture for blackroad.systems and blackroad.io
- GitHub organization mapping (BlackRoad-OS repos)
- Railway service-to-domain configuration
- DNS configuration templates for Cloudflare

## Extracted Services

### AIops Service (services/aiops/)
- Canary analysis for deployment validation
- Config drift detection
- Event correlation engine
- Auto-remediation with runbook mapping
- SLO budget management

### Analytics Service (services/analytics/)
- Rule-based anomaly detection with safe expression evaluation
- Cohort analysis with multi-metric aggregation
- Decision engine with credit budget constraints
- Narrative report generation

### Codex Governance (services/codex/)
- 82+ governance principles (entries)
- Codex Pantheon with 48+ agent archetypes
- Manifesto defining ethical framework

## Integration Points
- AIops → infra.blackroad.systems (blackroad-os-infra)
- Analytics → core.blackroad.systems (blackroad-os-core)
- Codex → operator.blackroad.systems (blackroad-os-operator)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-29 13:39:08 -06:00

1.2 KiB

Codex 18 — Byzantine Agreement — Keep Consensus Under Attack

Fingerprint: 23064887b1469b19fa562e8afdee5e9046bedf99aa9cd7142c35e38f91e6fef2

Aim

Reach agreement among distributed replicas even when some behave maliciously.

Core

  • With (3f + 1) replicas, tolerate up to (f) Byzantine faults without violating safety.
  • Guarantee safety so no two honest replicas commit different values and maintain liveness under partial synchrony.
  • Target commit latency of roughly two to three rounds, as in PBFT or HotStuff families.

Runbook

  1. Size quorums at (N = 3f + 1), randomize leaders, and rotate keys to limit targeted attacks.
  2. Gossip using authenticated channels, checkpoint state, and maintain view-change proofs.
  3. Rate-limit clients and detect equivocation via signed message logs.

Telemetry

  • Commit rate and consensus latency.
  • Frequency of view changes and estimated fault counts.
  • Network health metrics affecting synchrony assumptions.

Failsafes

  • If liveness degrades, shrink to a smaller honest core or enter read-only mode.
  • Escalate to manual intervention when equivocation exceeds thresholds or key compromise is suspected.

Tagline: Agreement even when the room lies.