Kong Declarative Config Accepted But Routes Not Created

You encounter a kong configuration issue that prevents your workflow from completing. This guide walks through the fix step by step.

Wrong ❌

format_version: "2.0" # Wrong: version should be 1.1 for db-less
services:
  - name: my-service
    url: http://backend:3000

Wrong Output

Declarative config accepted but no routes or services created. DB-less mode expects format_version: "1.1".

Right ✅

_format_version: "1.1"
services:
  - name: my-service
    url: http://backend:3000
    routes:
      - name: my-route
        paths: ["/api"]
        hosts: ["example.com"]
        methods: ["GET", "POST"]

Right Output

Services and routes created from declarative config. Kong proxy responds correctly.

Prevention

• Use format_version: "1.1" for DB-less mode.
• Include routes within the service definition.
• Validate YAML before loading: kong check kong.yml.
• Test with kong health before routing traffic.
• Version your declarative config files.

DodaTech applies similar defensive patterns across Doda Browser, DodaZIP, and Durga Antivirus Pro infrastructure for production reliability.

Common Mistakes with declarative config

1. Forgetting deriving (Show, Eq) on custom data types needed for debugging
2. Placing the wildcard pattern first in case expressions, making all subsequent patterns unreachable
3. Using head and tail instead of pattern matching, causing runtime errors on empty lists

These mistakes appear frequently in real-world KONG code. DodaTech's contributors have identified these patterns through analysis of open-source projects and production systems.

Practice Exercise

Write a pure function that safely divides two integers using Maybe, then test it with edge cases like division by zero and negative numbers.

This exercise reinforces the concepts covered in this guide. Try implementing it before checking online solutions.

FAQ

This quick fix is part of the DodaTech infrastructure engineering series. Learn more at DodaTech tutorials.