You want to run a logging agent on all Linux nodes but exclude Windows nodes in your Kubernetes cluster. How should you configure the DaemonSet?

hard📝 Best Practice Q15 of 15

Kubernetes - Scheduling

AAdd a <code>nodeSelector</code> with <code>kubernetes.io/os: linux</code> in the pod spec

BAdd a <code>tolerations</code> for Windows taints in the pod spec

CSet the DaemonSet selector to <code>os: linux</code> label

DUse a Deployment instead of DaemonSet with node affinity

Step-by-Step Solution

Solution:

Step 1: Identify how to target Linux nodes only
Kubernetes labels nodes with kubernetes.io/os set to their OS. Using nodeSelector with kubernetes.io/os: linux restricts pods to Linux nodes.
Step 2: Evaluate other options
Tolerations are for taints, not OS filtering. Selector matches pod labels, not nodes. Deployment does not guarantee one pod per node.
Final Answer:
Add a nodeSelector with kubernetes.io/os: linux in the pod spec -> Option A
Quick Check:
Use nodeSelector to filter nodes by OS [OK]

Quick Trick: Use nodeSelector with OS label to filter nodes [OK]

Common Mistakes:

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