Infrastructure Verification Report

Date: January 29, 2026
Session: 73.4
Purpose: Verify Railway and Cloudflare configuration after migration

Executive Summary

During deployment on Jan 29, 2026, we discovered:

1. DNS records missing for ai-api.gograb.space and docs-api.gograb.space
2. backend-docs-api returning 502 on Railway
3. Hypothesis: Cloudflare migration may have broken previous DNS configuration

Current Architecture

┌─────────────────────────────────────────────────────────────────────┐
│                         CLOUDFLARE                                   │
│  (DNS + CDN for gograb.space)                                       │
├─────────────────────────────────────────────────────────────────────┤
│                                                                      │
│  Frontend (Workers & Pages):                                         │
│  ├── gograb.space          → gograb-landing.pages.dev               │
│  ├── app.gograb.space      → gograb-space-app.pages.dev    ✅       │
│  ├── docs.gograb.space     → gograb-docs.pages.dev                  │
│  └── pulse.gograb.space    → gograb-pulse.pages.dev                 │
│                                                                      │
│  API Subdomains (CNAME to Railway):                                  │
│  ├── api.gograb.space      → Railway backend-api           ✅       │
│  ├── ai-api.gograb.space   → Railway backend-ai-api        ❌ MISSING│
│  └── docs-api.gograb.space → Railway backend-docs-api      ❌ MISSING│
│                                                                      │
└─────────────────────────────────────────────────────────────────────┘
                                    │
                                    ▼
┌─────────────────────────────────────────────────────────────────────┐
│                          RAILWAY                                     │
│  (Backend APIs via GitHub deploy branches)                           │
├─────────────────────────────────────────────────────────────────────┤
│                                                                      │
│  Service: backend-api                                                │
│  ├── Branch: deploy/api                                              │
│  ├── Domain: backend-api-production-97c0.up.railway.app              │
│  ├── Health: /api/health                                             │
│  └── Status: ✅ HEALTHY                                              │
│                                                                      │
│  Service: backend-ai-api                                             │
│  ├── Branch: deploy/ai-api                                           │
│  ├── Domain: backend-ai-api-production.up.railway.app                │
│  ├── Health: /ai-api/health                                          │
│  └── Status: ✅ HEALTHY                                              │
│                                                                      │
│  Service: backend-docs-api                                           │
│  ├── Branch: deploy/docs-api                                         │
│  ├── Domain: backend-docs-api-production.up.railway.app              │
│  ├── Health: /docs-api/health                                        │
│  └── Status: ❌ 502 ERROR                                            │
│                                                                      │
└─────────────────────────────────────────────────────────────────────┘

DNS Verification Results

Test Command

dig +short <subdomain>

Results (Jan 29, 2026)

Required Cloudflare DNS Records

Existing Records (Verified Working)

@       CNAME   gograb-landing.pages.dev        (proxied)
app     CNAME   gograb-space-app.pages.dev      (proxied)
api     CNAME   backend-api-production-97c0.up.railway.app  (proxied)

Missing Records (Need to Add)

ai-api    CNAME   backend-ai-api-production.up.railway.app    (proxied)
docs-api  CNAME   backend-docs-api-production.up.railway.app  (proxied)

Other Records (Verify Exist)

docs    CNAME   gograb-docs.pages.dev           (proxied)
pulse   CNAME   gograb-pulse.pages.dev          (proxied)

Railway Service Health Check

Direct Railway URLs (Bypass DNS)

# Backend API - HEALTHY
curl https://backend-api-production-97c0.up.railway.app/api/health
# Response: {"status":"ok","timestamp":"...","service":"backend-api","version":"1.0.0"}

# Backend AI API - HEALTHY
curl https://backend-ai-api-production.up.railway.app/ai-api/health
# Response: {"status":"ok","timestamp":"...","service":"backend-ai-api",...}

# Backend Docs API - 502 ERROR
curl https://backend-docs-api-production.up.railway.app/docs-api/health
# Response: {"status":"error","code":502,"message":"Application failed to respond",...}

Backend-Docs-API 502 Error Investigation

Timeline

• Jan 23, 2026: backend-docs-api was HEALTHY (per Railway dashboard screenshot)
• Jan 29, 2026: backend-docs-api returning 502 after deployment

Deployment Details

• Branch: deploy/docs-api
• Commit: 3e1156738 (Merge editor2-session-73.4 into deploy/docs-api)
• Dockerfile: deployment/Dockerfile.railway.docs-api
• Start Command: node dist/apis/backend-docs-api/main.js

Code Changes Since Last Working Version

• No direct changes to apis/backend-docs-api/
• Minor changes to libs/libs-api/llm-integration/ (substr → substring)

Possible Causes

1. Environment variable missing or changed - Check Railway Variables
2. MongoDB connection issue - Verify MONGODB_CONNECTION_STRING_TEST_MODULES
3. Dependency issue - Build succeeded but runtime crash
4. Memory limit - Check if service is OOMKilled

Action Required

Check Railway Dashboard for backend-docs-api:

1. Go to Build Logs - verify build succeeded
2. Go to Deploy Logs - check for startup errors
3. Check Variables - ensure all env vars are set

Railway Project Configuration

Project IDs

Required Environment Variables

All Services

backend-docs-api Specific

ALLOWED_ORIGINS Value

https://gograb.space,https://app.gograb.space,https://api.gograb.space,https://ai-api.gograb.space,https://docs-api.gograb.space,https://docs.gograb.space,http://localhost:5200,http://localhost:5701

Cloudflare Pages Configuration

Projects (from dashboard screenshot)

Custom Domains to Verify

Verification Checklist

Cloudflare DNS (dash.cloudflare.com → DNS → Records)

• Verify api CNAME exists → backend-api-production-97c0.up.railway.app
• Add ai-api CNAME → backend-ai-api-production.up.railway.app
• Add docs-api CNAME → backend-docs-api-production.up.railway.app
• Verify docs CNAME exists → gograb-docs.pages.dev
• Verify pulse CNAME exists → gograb-pulse.pages.dev
• Verify all records are proxied (orange cloud)

Railway Services (railway.com dashboard)

• backend-api: Check deployment is using latest deploy/api commit
• backend-ai-api: Check deployment is using latest deploy/ai-api commit
• backend-docs-api: Check Build Logs for errors
• backend-docs-api: Check Deploy Logs for startup errors
• backend-docs-api: Verify all environment variables are set

Post-Fix Verification

# After adding DNS records, verify:
curl https://api.gograb.space/api/health
curl https://ai-api.gograb.space/ai-api/health
curl https://docs-api.gograb.space/docs-api/health

# All should return {"status":"ok",...}

Git Branch Status (as of Jan 29, 2026)

Related Documentation

• Railway Deployment Guide
• GitHub Branches Strategy
• Cloudflare Deployment Guide
• Environment Variables Reference

Report generated by Cursor Agent - Session 73.4