You want to ensure a Pod runs only on nodes labeled region=us-west and disktype=ssd. Which is the correct nodeSelector configuration?

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Kubernetes - Scheduling

You want to ensure a Pod runs only on nodes labeled region=us-west and disktype=ssd. Which is the correct nodeSelector configuration?

AnodeSelector: region: us-west, disktype: ssd

BnodeSelector: region=us-west disktype=ssd

CnodeSelector: - region=us-west - disktype=ssd

DnodeSelector: region: us-west disktype: ssd

Step-by-Step Solution

Solution:

Step 1: Understand nodeSelector format for multiple labels
nodeSelector is a map of key-value pairs, each on its own line with proper indentation.
Step 2: Evaluate each option's syntax
nodeSelector: region: us-west disktype: ssd correctly lists two key-value pairs. nodeSelector: region: us-west, disktype: ssd uses invalid comma syntax. nodeSelector: - region=us-west - disktype=ssd uses list syntax which is invalid. nodeSelector: region=us-west disktype=ssd uses equals signs incorrectly.
Final Answer:
nodeSelector: region: us-west disktype: ssd -> Option D
Quick Check:
Multiple labels in nodeSelector use separate key: value lines [OK]

Quick Trick: List each label as key: value pair under nodeSelector [OK]

Common Mistakes:

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