CKA Cluster Maintenance 2

Question 1

Which command safely evicts all pods from a node before maintenance without permanently removing it from the cluster?

Accepted Answer

kubectl drain <node> --ignore-daemonsets

Answer

kubectl delete node <node>

Answer

kubectl taint node <node> key=value:NoSchedule

Answer

kubectl cordon <node>

Question 2

After completing node maintenance, which command makes the node schedulable again?

Accepted Answer

kubectl uncordon <node>

Answer

kubectl drain <node> --uncordon

Answer

kubectl delete taint <node>

Answer

kubectl label node <node> schedulable=true

Question 3

A node has a pod with no replication controller. What happens when you run kubectl drain on that node?

Accepted Answer

The drain fails unless --force flag is used

Answer

The pod is evicted automatically

Answer

The pod is rescheduled on another node

Answer

The drain skips that pod silently

Question 4

What is the default eviction timeout when draining a node in Kubernetes?

Accepted Answer

infinite (waits forever)

Answer

30 seconds

Answer

5 minutes

Answer

2 minutes

Question 5

Which etcd operation should be performed before upgrading the Kubernetes control plane?

Accepted Answer

etcd snapshot backup

Answer

etcd compaction

Answer

etcd defragmentation

Answer

etcd member remove

Question 6

What does the --pod-eviction-timeout flag control in kube-controller-manager?

Accepted Answer

Grace period before evicting pods from a NotReady node

Answer

How long to wait before deleting a terminating pod

Answer

Time allowed for PodDisruptionBudget violations

Answer

Timeout for kubectl drain operations

Question 7

A cluster is running Kubernetes 1.28. What is the maximum number of minor versions you can skip when upgrading with kubeadm?

Accepted Answer

One minor version at a time

Answer

Any number of versions

Answer

Two minor versions at a time

Answer

Three minor versions at a time