Certified Kubernetes Administrator (CKA) With complete solution Newest RATED A+ 2025/2026 NEW!!

Certified Kubernetes Administrator (CKA) With
complete solution Newest RATED A+ 2025/2026 NEW!!

Set configuration context:
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[student@node-1]$ kubectl config use-context-mk8s Il` Il` Il`




Task:

Given an existing Kubernetes cluster running version 1.18.8, upgrade all of the Kubernetes control
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plan and node components on the master node only to version 1.19.0.
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You are also expected to upgrade kubelet and kubectl on the master node.
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Be sure to drain the master node before upgrading it an uncordon it after the upgrade. Do not
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upgrade the worker nodes, etcd, the container manager, the CNI plugin, the DNS service or any
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other addons.
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A.) Il`




kubectl drain <node-to-drain> --ignore-daemonsets
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root@controlplane:~# apt update Il` Il`




apt-get update && \ Il` Il` Il`




apt-get install -y --allow-change-held-packages kubeadm=1.22.x-00
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kubeadm version Il`




kubeadm upgrade plan Il` Il`




kubeadm upgrade apply v1.20.0 Il` Il` Il`




apt-get update && \ Il` Il` Il`




apt-get install -y --allow-change-held-packages kubelet=1.22.x-00 kubectl=1.22.x-00
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B.) Il`




sudosystemctl daemon-reload Il`




sudosystemctl restart kubelet Il` Il`

,kubectluncordon<node-to-drain>

C. Il`




sudosystemctl system-reload Il`




sudosystemctl uplooad-kubelet Il`




kubectluncordon<note-to-drain>

B

Set configuration context:
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[student@node-1]$ kubectl config use-context k8s Il` Il` Il` Il`




Task:

From the pod label name=cpu-user, find pods running high CPU workloads and write the name of
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the pod consuming most CPU to the file /opt/KUTR00401/KUTR00401.txt (which already exists).
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A.)

kubectl top -l name=cpu-utilizer –A echo 'pod name' >>/opt/KUT00401/KUT00401.txt
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kubectl top pod --sort-by='cpu' --no-headers | head -1
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or

kubectl top pods -l name=name-cpu-loader --sort-by=cpu
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echo ‘top pod name' >>/opt/KUTR00401/KUTR00401.txt
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or

kubectl top node --sort-by='cpu' --no-headers | head -1
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kubectl top pod --sort-by='memory' --no-headers | head -1
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kubectl top pod --sort-by='cpu' --no-headers | tail -1
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B.)

kubectl top note-l name=name-cpu-loader --sort-by=cpu
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echo ‘top note name' >>/opt/KUTR00401/KUTR00401.txt
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C.)

, kubectl top node --sort-by='cpu' --no-footer| head -1
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A

Set configuration context:
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[student@node-1]$ kubectl config use-context k8s Il` Il` Il` Il`




Task:

Check to see how many nodes are ready (not including nodes tainted NoSchedule) and write the
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number to /opt/KUSC00402/kusc00402.txt
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--------------------------------------------------------

A.)

kubectl get nodes Il` Il`




kubectl get node | grep -i ready |wc -l
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kubectl describe nodes | grep ready|wc -l
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kubectl describe nodes | grep -i taint | grep -inoschedule | wc -l
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echo 3 > /opt/KUSC00402/kusc00402.txt
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JSONPATH='{range .items[*]}{@.metadata.name}:{range Il`




@.status.conditions[*]}{@.type}={@.status};{end}{end}'\
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&& kubectl get nodes -o jsonpath="$JSONPATH" |
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grep"Ready=True">/opt/KUSC00402/kusc00402.txt
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B.)

kubect2 post nodes Il` Il`




kubectl post node | grep -i ready |wc -l
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kubectl describe nodes | grep ready|wc -l
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kubectl describe nodes | grep -i taint | grep -inoschedule |wc -l
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echo 3 > /opt/KUSC00402/kusc00402.txt
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C.)

JSONPATH='{range .items[*]}{@.metadata.name}:{range Il`




@.status.conditions[*]}{@.type}={@.status};{end}{end}'\
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