You want to ensure Pods only run on nodes with label gpu=true and avoid nodes with taint dedicated=gpu:NoSchedule. Which combination achieves this?

hard📝 Workflow Q8 of 15

Kubernetes - Scheduling

You want to ensure Pods only run on nodes with label gpu=true and avoid nodes with taint dedicated=gpu:NoSchedule. Which combination achieves this?

AUse taints on Pods and nodeSelector gpu=true

BUse nodeSelector: gpu=true without tolerations

CUse affinity rules for gpu=true and no tolerations

DUse nodeSelector: gpu=true and add tolerations for dedicated=gpu:NoSchedule

Step-by-Step Solution

Solution:

Step 1: Understand nodeSelector and taints
nodeSelector restricts nodes by label; taints prevent scheduling unless tolerated.
Step 2: Combine nodeSelector and tolerations
To schedule on tainted nodes, Pods must have matching tolerations.
Final Answer:
Use nodeSelector: gpu=true and add tolerations for dedicated=gpu:NoSchedule -> Option D
Quick Check:
nodeSelector + tolerations needed to schedule on tainted nodes [OK]

Quick Trick: Tolerate taints and select nodes by label to schedule Pods [OK]

Common Mistakes:

Ignoring need for tolerations on tainted nodes
Using affinity without tolerations for taints
Confusing taints on nodes with taints on Pods

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You want to ensure Pods only run on nodes with label gpu=true and avoid nodes with taint dedicated=gpu:NoSchedule. Which combination achieves this?

Step 1: Understand nodeSelector and taints

Step 2: Combine nodeSelector and tolerations

Final Answer:

Quick Check:

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