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NEW QUESTION # 19
List all the pods sorted by name
Answer:
Explanation:
See the solution below.
Explanation
kubectl get pods --sort-by=.metadata.name
NEW QUESTION # 20
Scale the deploymentwebserverto6pods.
Answer:
Explanation:
See the solution below.
Explanation
solution
NEW QUESTION # 21
For this item, you will havetosshto the nodesik8s-master-0andik8s-node-0and complete all tasks on thesenodes. Ensure that you return tothe base node (hostname:node-1) when you havecompleted this item.
Context
As an administrator of a smalldevelopment team, you have beenasked to set up a Kubernetes clusterto test the viability of a newapplication.
Task
You must usekubeadmto performthis task. Anykubeadminvocationswill require the use of the
--ignore-preflight-errors=alloption.
* Configure thenodeik8s-master-Oas a masternode. .
* Join the nodeik8s-node-otothe cluster.
Answer:
Explanation:
See the solution below.
Explanation
solution
You must use thekubeadmconfiguration file located at when initializingyour cluster.
You may use any CNI pluginto complete this task, but ifyou don't have your favouriteCNI plugin's manifest URL athand, Calico is one popularoption:https://docs.projectcalico.org/v3.14/manifests/calico.yaml Docker is already installedon both nodes and hasbeen configured so that you caninstall the required tools.
NEW QUESTION # 22
Create a pod with environment variables as var1=value1.Check the environment variable in pod
- A. kubectl run nginx --image=nginx --restart=Never --env=var1=value1
# then
kubectl exec -it nginx -- env
# or
kubectl exec -it nginx -- sh -c 'echo $var1'
# or
kubectl describe po nginx | grep value1 - B. kubectl run nginx --image=nginx --restart=Never --env=var1=value1
# then
kubectl exec -it nginx -- env
# or
kubectl describe po nginx | grep value1
Answer: A
NEW QUESTION # 23
Create a pod with init container which waits for a service called "myservice" to be created. Once init container completes, the myapp-container should start and print a message "The app is running" and sleep for 3600 seconds.
- A. vim multi-container-pod.yaml
apiVersion: v1
kind: Pod
metadata:
name: myapp-pod
labels:
app: myapp
spec:
containers:
- name: myapp-container
image: busybox:1.28
command: ['sh', '-c', 'echo The app is running! && sleep
3600']
initContainers:
- name: init-myservice
image: busybox:1.28
command: ['sh', '-c', "until nslookup myservice.$(cat
/var/run/secrets/kubernetes.io/serviceaccount/namespace).s
vc.cluster.local; do echo waiting for myservice; sleep 2;
done"]
// Check whether service called "myservice" exists
kubectl get svc
Note: Pod will not start if service called "myservice" doesn't
exist.
// Now, Create the pod
kubectl apply -f multi-container-pod.yaml - B. vim multi-container-pod.yaml
apiVersion: v1
kind: Pod
metadata:
name: myapp-pod
labels:
app: myapp
spec:
containers:
- name: myapp-container
image: busybox:1.28
command: ['sh', '-c', 'echo The app is running! && sleep
3600']
initContainers:
- name: init-myservice
done"]
// Check whether service called "myservice" exists
kubectl get svc
Note: Pod will not start if service called "myservice" doesn't
exist.
// Now, Create the pod
kubectl apply -f multi-container-pod.yaml
Answer: A
NEW QUESTION # 24
Create a namespace called 'development' and a pod with image nginx called nginx on this namespace.
Answer:
Explanation:
See the solution below.
Explanation
kubectl create namespace development
kubectl run nginx --image=nginx --restart=Never -n development
NEW QUESTION # 25
List the nginx pod with custom columns POD_NAME and POD_STATUS
Answer:
Explanation:
See the solution below.
Explanation
kubectl get po -o=custom-columns="POD_NAME:.metadata.name,
POD_STATUS:.status.containerStatuses[].state"
NEW QUESTION # 26
Get the memory and CPU usage of all the pods and find out top 3 pods which have the highest usage and put them into the cpuusage.txt file
- A. // Get the top 3 pods
kubectl top pod --all-namespaces | sort --reverse --key 3 --
numeric | head -8
// putting into file
kubectl top pod --all-namespaces | sort --reverse --key 6 --
numeric | head -6 > cpu-usage.txt
// verify
cat cpu-usage.txt - B. // Get the top 3 pods
kubectl top pod --all-namespaces | sort --reverse --key 3 --
numeric | head -3
// putting into file
kubectl top pod --all-namespaces | sort --reverse --key 3 --
numeric | head -3 > cpu-usage.txt
// verify
cat cpu-usage.txt
Answer: B
NEW QUESTION # 27
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 (
[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:
See the solution below.
Explanation
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\23 C.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\23 D.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\23 E.JPG
NEW QUESTION # 28
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 # 29
Create a deployment as follows:
* Name: nginx-app
* Using container nginx with version 1.11.10-alpine
* The deployment should contain 3 replicas
Next, deploy the application with new version 1.11.13-alpine, by performing a rolling update.
Finally, rollback that update to the previous version 1.11.10-alpine.
Answer:
Explanation:
See the solution below.
Explanation
solution
NEW QUESTION # 30
Get the pods with label env=dev and output the labels
Answer:
Explanation:
kubectl get pods -l env=dev --show-labels
NEW QUESTION # 31
Score: 5%
Task
Monitor the logs of pod bar and:
* Extract log lines corresponding to error file-not-found
* Write them to /opt/KUTR00101/bar
Answer:
Explanation:
Solution:
kubectl logs bar | grep 'unable-to-access-website' > /opt/KUTR00101/bar cat /opt/KUTR00101/bar
NEW QUESTION # 32
Get the number of schedulable nodes and write to a file
/opt/schedulable-nodes.txt
- A. kubectl get nodes -o jsonpath="{range
.items[*]}{.metadata.name}
{.spec.taints[?(@.effect=='NoSchedule')].effect}{\"\n\"}{end}"
| awk 'NF==11 {print $0}' > /opt/schedulable-nodes.txt
// Verify
cat /opt/schedulable-nodes.txt - B. kubectl get nodes -o jsonpath="{range
.items[*]}{.metadata.name}
{.spec.taints[?(@.effect=='NoSchedule')].effect}{\"\n\"}{end}"
| awk 'NF==1 {print $0}' > /opt/schedulable-nodes.txt
// Verify
cat /opt/schedulable-nodes.txt
Answer: B
NEW QUESTION # 33
Update the deployment with the image version 1.16.1 and verify the image and check the rollout history
Answer:
Explanation:
kubectl set image deploy/webapp nginx=nginx:1.16.1 kubectl describe deploy webapp | grep Image kubectl rollout history deploy webapp
NEW QUESTION # 34
......
Linux Foundation CKA Program is a certification exam that validates one's skills and knowledge in Kubernetes administration. CKA exam is designed for IT professionals who have experience in administering Kubernetes clusters and covers a range of topics from basic to advanced. Certified Kubernetes Administrator (CKA) Program Exam certification is widely recognized in the industry and is a valuable asset for IT professionals. The CKA certification can lead to better job opportunities and higher salaries, and it is a stepping stone to more advanced Kubernetes certifications.
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