[Solved] You wrote this Service YAML: selector: app: frontend env: staging But the Service does not route traffic to any pods. What is the likely problem? | Kubernetes

Kubernetes - Services

You wrote this Service YAML:

selector:
  app: frontend
  env: staging

But the Service does not route traffic to any pods. What is the likely problem?

AThe selector key should be <code>matchLabels</code> instead of <code>selector</code>

BPods do not have both labels <code>app=frontend</code> and <code>env=staging</code>

CThe Service must specify <code>podSelector</code> instead of <code>selector</code>

DThe labels in selector must be comma separated

Step-by-Step Solution

Solution:

Step 1: Check selector syntax correctness
The selector syntax is correct; selector with key-value pairs is valid.
Step 2: Identify why no pods are selected
If no pods match both labels exactly, the Service routes to no pods.
Final Answer:
Pods do not have both labels app=frontend and env=staging -> Option B
Quick Check:
No matching pods = labels mismatch [OK]

Quick Trick: No traffic? Check pods have all selector labels exactly [OK]

Common Mistakes:

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