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Examcollection CKA Questions Answers & Test CKA Pattern

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Examcollection CKA Questions Answers & Test CKA Pattern

Posted at before yesterday 16:08      View：19 | Replies：0        Print      Only Author   [Copy Link] 1#
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Linux Foundation CKA (Certified Kubernetes Administrator) Program Exam is a certification exam designed to test the skills and knowledge of system administrators and developers who work with Kubernetes. Kubernetes is an open-source container orchestration tool that is rapidly gaining popularity in the IT industry. With the increasing demand for skilled professionals who can deploy and manage Kubernetes clusters, the CKA exam has become a popular certification for those looking to advance their careers in this field.
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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q81-Q86):NEW QUESTION # 81
Create a ETCD backup of kubernetes cluster
Note : You don't need to memorize command, refer -
https://kubernetes.io/docs/tasks ... figureupgrade-etcd/ during exam
  • A. ETCDCTL_API=3 etcdctl --endpoints=[ENDPOINT] --cacert=[CA CERT]
    --cert=[ETCD SERVER CERT] --key=[ETCD SERVER KEY] snapshot save
    [BACKUP FILE NAME]
    In exam, cluster setup is done with kubeadm , this means ETCD
    used by the kubernetes cluster is coming from static pod.
    kubectl get pod -n kube-system
    kubectl describe pod etcd-master -n kube-system
    You can locate the information on
    endpoint: - advertise-client-urls=https://172.16.0.18:2379
    ca certificate: - trusted-cafile=/etc/kubernetes/pki/etcd/ca.crt
    server certificate : - certfile=/etc/kubernetes/pki/etcd/server.crt
    key: - key-file=/etc/kubernetes/pki/etcd/server.key
    To Create backup
    export ETCDCTL_API=3
    (or)
    ETCDCTL_API=3 etcdctl ETCDCTL_API=3 etcdctl --
    endpoints=https://172.17.0.15:2379 --
    key=/etc/kubernetes/pki/etcd/server.key snapshot save etcdsnapshot.db
    //Verify
    ETCDCTL_API=3 etcdctl --write-out=table snapshot status
    snapshot.db
  • B. ETCDCTL_API=3 etcdctl --endpoints=[ENDPOINT] --cacert=[CA CERT]
    --cert=[ETCD SERVER CERT] --key=[ETCD SERVER KEY] snapshot save
    [BACKUP FILE NAME]
    In exam, cluster setup is done with kubeadm , this means ETCD
    used by the kubernetes cluster is coming from static pod.
    kubectl get pod -n kube-system
    kubectl describe pod etcd-master -n kube-system
    You can locate the information on
    endpoint: - advertise-client-urls=https://172.17.0.15:2379
    ca certificate: - trusted-cafile=/etc/kubernetes/pki/etcd/ca.crt
    server certificate : - certfile=/etc/kubernetes/pki/etcd/server.crt
    key: - key-file=/etc/kubernetes/pki/etcd/server.key
    To Create backup
    export ETCDCTL_API=3
    (or)
    ETCDCTL_API=3 etcdctl ETCDCTL_API=3 etcdctl --
    endpoints=https://172.17.0.15:2379 --
    cacert=/etc/kubernetes/pki/etcd/ca.crt --
    cert=/etc/kubernetes/pki/etcd/server.crt --
    key=/etc/kubernetes/pki/etcd/server.key snapshot save etcdsnapshot.db
    //Verify
    ETCDCTL_API=3 etcdctl --write-out=table snapshot status
    snapshot.db
Answer: B

NEW QUESTION # 82
List all the pods sorted by created timestamp
Answer:
Explanation:
kubect1 get pods--sort-by=.metadata.creationTimestamp

NEW QUESTION # 83
Deploy a pod with image=redis on a node with label disktype=ssd
  • A. // Get list of nodes
    kubectl get nodes
    //Get node with the label disktype=ssd
    kubectl get no -l disktype=ssd
    // Create a sample yaml file
    kubectl run node-redis --generator=run-pod/v1 --image=redis --dry
    run -o yaml > test-redis.yaml
    // Edit test-redis.yaml file and add nodeSelector
    vim test-redis.yaml
    apiVersion: v1
    - name: node-redis
    image: redis
    imagePullPolicy: IfNotPresent
    kubectl apply -f test-redis.yaml
    / // Verify
    K kubectl get po -o wide
  • B. // Get list of nodes
    kubectl get nodes
    //Get node with the label disktype=ssd
    kubectl get no -l disktype=ssd
    // Create a sample yaml file
    kubectl run node-redis --generator=run-pod/v1 --image=redis --dry
    run -o yaml > test-redis.yaml
    // Edit test-redis.yaml file and add nodeSelector
    vim test-redis.yaml
    apiVersion: v1
    kind: Pod
    metadata:
    name: redis
    spec:
    nodeSelector:
    disktype: ssd
    containers:
    - name: node-redis
    image: redis
    imagePullPolicy: IfNotPresent
    kubectl apply -f test-redis.yaml
    / // Verify
    K kubectl get po -o wide
Answer: B

NEW QUESTION # 84
Create a redis pod named "test-redis" and exec into that pod and create a file named "test-file.txt" with the text 'This is called the test file' in the path /data/redis and open another tab and exec again with the same pod and verifies file exist in the same path.
  • A. vim test-redis.yaml
    apiVersion: v1
    kind: Pod
    metadata:
    name: test-redis
    spec:
    containers:
    - name: redis
    image: redis
    ports:
    - containerPort: 6379
    volumeMounts:
    - mountPath: /data/redis
    name: redis-storage
    volumes:
    kubectl exec -it test-redis /bin/sh
    cd /data/redis
    echo 'This is called the test file' > file.txt
    //open another tab
    kubectl exec -it test-redis /bin/sh
    cat /data/redis/file.txt
  • B. vim test-redis.yaml
    apiVersion: v1
    kind: Pod
    metadata:
    name: test-redis
    spec:
    containers:
    - name: redis
    image: redis
    ports:
    - containerPort: 6379
    volumeMounts:
    - mountPath: /data/redis
    name: redis-storage
    volumes:
    - name: redis-storage
    emptyDir: {}
    kubectl apply -f redis-pod-vol.yaml
    // first terminal
    kubectl exec -it test-redis /bin/sh
    cd /data/redis
    echo 'This is called the test file' > file.txt
    //open another tab
    kubectl exec -it test-redis /bin/sh
    cat /data/redis/file.txt
Answer: B

NEW QUESTION # 85
Check to see how many worker nodes are ready (not including nodes tainted NoSchedule) and write the number to /opt/KUCC00104/kucc00104.txt.
Answer:
Explanation:
solution



NEW QUESTION # 86
......
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