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GCP Associate Cloud Engineer Practice Question

A standard GKE cluster currently runs two node pools. You introduced a new pool with a larger machine type and want to eliminate the legacy pool named "legacy-pool" with as little application disruption as possible. You must

  1. stop additional Pods from landing on the old nodes,
  2. gracefully evict the running Pods so they reschedule on the new pool, and
  3. permanently remove the legacy node pool. Which approach satisfies all requirements?

  • Scale the legacy-pool size to 0 replicas; GKE automatically removes the empty pool without further action.

  • Set autoscaler min and max for legacy-pool to 0 and immediately delete the pool; Kubernetes will evict Pods automatically.

  • Cordon each node in legacy-pool, drain the nodes with a grace period, then run gcloud container node-pools delete legacy-pool.

  • Disable the cluster autoscaler, issue gcloud container clusters update --remove-node-pool=legacy-pool, and rely on default eviction.

GCP Associate Cloud Engineer
Ensuring successful operation of a cloud solution
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