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Linux Foundation CKA (Certified Kubernetes Administrator) Program Certification Exam is a highly sought-after certification for IT professionals who work with Kubernetes. Kubernetes is an open-source platform that is used to automate the deployment, scaling, and management of containerized applications. The CKA certification program is designed to test the skills and knowledge of IT professionals who work with Kubernetes.
The CKA exam is designed to evaluate the candidate's ability to perform tasks related to Kubernetes administration. It is a performance-based exam that requires the candidate to complete tasks using Kubernetes command-line tools. CKA exam consists of 24 tasks that are divided into eight categories, including Application Lifecycle Management, Cluster Maintenance, Installation and Configuration, Networking, Storage, Security, Scheduling, and Logging and Monitoring.
The CKA certification is recognized globally and is highly regarded by employers in the IT industry. Holding a CKA certification demonstrates an individual's ability to manage Kubernetes clusters effectively, which is a highly sought-after skill in today's job market. The CKA certification also provides individuals with access to a global community of certified professionals who can share knowledge and best practices in Kubernetes administration. The CKA exam is a valuable investment for individuals who want to enhance their career prospects and stay up-to-date with the latest technologies in the industry.
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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q49-Q54):
NEW QUESTION # 49
Create an nginx pod which reads username as the environment variable
- A. // create a yml file
kubectl run nginx --image=nginx --restart=Never --dry-run -o
yaml nginx.yml
// add env section below and create
apiVersion: v1
kind: Pod
metadata:
labels:
run: nginx
name: nginx
spec:
containers:
- image: nginx
name: nginx
env:
- name: USER_NAME
valueFrom:
secretKeyRef:
name: my-secret
key: username
restartPolicy: Never
kubectl create -f nginx.yml
//Verify
kubectl exec -it nginx - env - B. // create a yml file
kubectl run nginx --image=nginx --restart=Never --dry-run -o
yaml nginx.yml
// add env section below and create
apiVersion: v1
kind: Pod
metadata:
labels:
run: nginx
name: nginx
spec:
containers:
- image: nginx
name: nginx
env:
- name: USER_NAME
restartPolicy: Never
kubectl create -f nginx.yml
//Verify
kubectl exec -it nginx - env
Answer: A
NEW QUESTION # 50
Given a partially-functioning Kubernetes cluster, identify symptoms of failure on the cluster.
Determine the node, the failing service, and take actions to bring up the failed service and restore the health of the cluster. Ensure that any changes are made permanently.
You can ssh to the relevant I nodes (bk8s-master-0 or bk8s-node-0) using:
[student@node-1] $ ssh nodename
You can assume elevated privileges on any node in the cluster with the following command:
[student@nodename] $ | sudo -i
Answer:
Explanation:
solution
NEW QUESTION # 51
Create 2 nginx image pods in which one of them is labelled with env=prod and another one labelled with env=dev and verify the same.
Answer:
Explanation:
See the solution below.
Explanation
kubectl run --generator=run-pod/v1 --image=nginx -- labels=env=prod nginx-prod --dry-run -o yaml nginx-prodpod.yaml Now, edit nginx-prod-pod.yaml file and remove entries like "creationTimestamp: null"
"dnsPolicy: ClusterFirst"
vim nginx-prod-pod.yaml
apiVersion: v1
kind: Pod
metadata:
labels:
env: prod
name: nginx-prod
spec:
containers:
- image: nginx
name: nginx-prod
restartPolicy: Always
# kubectl create -f nginx-prod-pod.yaml
kubectl run --generator=run-pod/v1 --image=nginx --
labels=env=dev nginx-dev --dry-run -o yaml nginx-dev-pod.yaml
apiVersion: v1
kind: Pod
metadata:
labels:
env: dev
name: nginx-dev
spec:
containers:
- image: nginx
name: nginx-dev
restartPolicy: Always
# kubectl create -f nginx-prod-dev.yaml
Verify :
kubectl get po --show-labels
kubectl get po -l env=prod
kubectl get po -l env=dev
NEW QUESTION # 52
For this item, you will have to ssh and complete all tasks on these
nodes. Ensure that you return to the base node (hostname: ) when you have completed this item.
Context
As an administrator of a small development team, you have been asked to set up a Kubernetes cluster to test the viability of a new application.
Task
You must use kubeadm to perform this task. Any kubeadm invocations will require the use of the
--ignore-preflight-errors=all option.
Configure the node ik8s-master-O as a master node. .
Join the node ik8s-node-o to the cluster.
Answer:
Explanation:
See the solution below.
Explanation
solution
You must use the kubeadm configuration file located at /etc/kubeadm.conf when initializingyour cluster.
You may use any CNI plugin to complete this task, but if you don't have your favourite CNI plugin's manifest URL at hand, Calico is one popular option:
https://docs.projectcalico.org/v3.14/manifests/calico.yaml
Docker is already installed on both nodes and apt has been configured so that you can install the required tools.
NEW QUESTION # 53
Score: 4%
Task
Schedule a pod as follows:
* Name: nginx-kusc00401
* Image: nginx
* Node selector: disk=ssd
Answer:
Explanation:
Solution:
#yaml
apiVersion: v1
kind: Pod
metadata:
name: nginx-kusc00401
spec:
containers:
- name: nginx
image: nginx
imagePullPolicy: IfNotPresent
nodeSelector:
disk: spinning
#
kubectl create -f node-select.yaml
NEW QUESTION # 54
......
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