[Q37-Q60] Pass Linux Foundation CKA Exam in First Attempt Guaranteed [Jun-2024]

NO.37 Create a configmap called myconfigmap with literal value
appname=myapp

NO.38 Score: 7%

Task
First, create a snapshot of the existing etcd instance running at https://127.0.0.1:2379, saving the snapshot to
/srv/data/etcd-snapshot.db.

Next, restore an existing, previous snapshot located at /var/lib/backup/etcd-snapshot-previo us.db

NO.39 Check the Image version of nginx-dev pod using jsonpath

NO.40 Scale the deployment webserver to

NO.41 Create a Pod with three busy box containers with commands “ls; sleep 3600;”, “echo Hello World; sleep 3600;” and “echo this is the third container; sleep 3600” respectively and check the status

NO.42 Create a pod named kucc8 with a single app container for each of the following images running inside (there may be between 1 and 4 images specified):
nginx + redis + memcached.

NO.43 Create a pod as follows:
Name: non-persistent-redis
container Image: redis
Volume with name: cache-control
Mount path: /data/redis
The pod should launch in the staging be persistent.

NO.44 Get the pods with label env=dev and output the labels

NO.45 Check the Image version of nginx-dev pod using jsonpath

NO.46 A Kubernetes worker node, named wk8s-node-0 is in state NotReady. Investigate why this is the case, and perform any appropriate steps to bring the node to a Ready state, ensuring that any changes are made permanent.
You can ssh to the failed node using:
[student@node-1] $ | ssh Wk8s-node-0
You can assume elevated privileges on the node with the following command:
[student@w8ks-node-0] $ | sudo -i

NO.47 Create a pod with environment variables as var1=value1.Check the environment variable in pod

NO.48 Create a pod named kucc8 with a single app container for each of the
following images running inside (there may be between 1 and 4 images specified):
nginx + redis + memcached.

NO.49 List all persistent volumes sorted by capacity, saving the full kubectl output to
/opt/KUCC00102/volume_list. Use kubectl ‘s own functionality for sorting the output, and do not manipulate it any further.

NO.50 Score: 7%

Task
Given an existing Kubernetes cluster running version 1.20.0, upgrade all of the Kubernetes control plane and node components on the master node only to version 1.20.1.
Be sure to drain the master node before upgrading it and uncordon it after the upgrade.

You are also expected to upgrade kubelet and kubectl on the master node.

NO.51 Create the deployment redis with image=redis and expose it with “NodePort” service redis-service

NO.52 Create a pod with image nginx called nginx and allow traffic on port 80

NO.53 Create a deployment as follows:
Name: nginx-random
Exposed via a service nginx-random
Ensure that the service & pod are accessible via their respective DNS records The container(s) within any pod(s) running as a part of this deployment should use the nginx Image Next, use the utility nslookup to look up the DNS records of the service & pod and write the output to
/opt/KUNW00601/service.dns and /opt/KUNW00601/pod.dns respectively.

NO.54 What file type upload is supported as part of the basic WildFire service?

NO.55 Scale the deploymentwebserverto6pods.

NO.56 Create a snapshot of the etcd instance running at https://127.0.0.1:2379, saving the snapshot to the file path /srv/data/etcd-snapshot.db.
The following TLS certificates/key are supplied for connecting to the server with etcdctl:
CA certificate: /opt/KUCM00302/ca.crt
Client certificate: /opt/KUCM00302/etcd-client.crt
Client key: Topt/KUCM00302/etcd-client.key

NO.57 List all configmap and secrets in the cluster in all namespace and write it to a file /opt/configmap-secret

NO.58 Create a pod that echo “hello world” and then exists. Have the pod deleted automatically when it’s completed

NO.59 // Create a configmap
kubectl create configmap redis-config –from-file=/opt/redisconfig
// Verify
kubectl get configmap redis-config -o yaml
// first run this command to save the pod yml
kubectl run redis-pod –image=redis –restart=Always –dry-run
-o yaml > redis-pod.yml
// edit the yml to below file and create
apiVersion: v1
kind: Pod
metadata:
name: redis
spec:
containers:
– name: redis
image: redis
env:
– name: MASTER
value: “true”
ports:
– containerPort: 6379
volumeMounts:
– mountPath: /redis-master-data
name: data
– mountPath: /redis-master
name: config
volumes:
– name: data
emptyDir: {}
– name: config
configMap:
name: example-redis-config

NO.60 Create a namespace called ‘development’ and a pod with image nginx called nginx on this namespace.