[Solved] You wrote this Ingress rule but traffic is not routing correctly: paths: - path: /app backend: serviceName: app-service servicePort: 80 What is the likely error? | Kubernetes

Kubernetes - Ingress

You wrote this Ingress rule but traffic is not routing correctly:

paths:
- path: /app
  backend:
    serviceName: app-service
    servicePort: 80

What is the likely error?

APath should be '/app/' with trailing slash

BUsing deprecated 'serviceName' and 'servicePort' instead of 'service.name' and 'service.port.number'

CMissing 'host' field in the rule

DService port must be a string, not a number

Step-by-Step Solution

Solution:

Step 1: Check Ingress backend syntax
Modern Kubernetes Ingress uses 'service.name' and 'service.port.number' fields, not 'serviceName' and 'servicePort'.
Step 2: Identify impact of deprecated fields
Using old fields causes Ingress controller to ignore the backend, so routing fails.
Final Answer:
Using deprecated 'serviceName' and 'servicePort' instead of 'service.name' and 'service.port.number' -> Option B
Quick Check:
Use 'service.name' and 'service.port.number' keys [OK]

Quick Trick: Use correct backend keys: service.name and service.port.number [OK]

Common Mistakes:

Master "Ingress" in Kubernetes

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