[Solved] Given the following Kubernetes Service selector for blue deployment:selector: app: myapp version: blueWhat happens if you change the selector to version: green? | Kubernetes

Kubernetes - Advanced Deployment Patterns

Given the following Kubernetes Service selector for blue deployment:

selector:
  app: myapp
  version: blue

What happens if you change the selector to version: green?

ATraffic will be split evenly between blue and green pods

BTraffic will be routed to pods labeled with version green

CTraffic will stop because selector is invalid

DPods with version blue will receive traffic

Step-by-Step Solution

Solution:

Step 1: Understand Service selector role
The Service selector chooses pods matching the labels to send traffic to.
Step 2: Effect of changing selector
Changing selector to version: green directs traffic only to pods labeled green, ignoring blue pods.
Final Answer:
Traffic will be routed to pods labeled with version green -> Option B
Quick Check:
Selector change = traffic to matching pods [OK]

Quick Trick: Service selector controls which pods get traffic [OK]

Common Mistakes:

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