Online Access Free LinuxFoundation.CKA.v2022-03-24.q66 Practice Test (Page 10)

CKA Exam Question 41

Create a redis pod and expose it on port 6379

A.kubectl run redis --image=redis --restart=Never --port=6379
YAML File :
apiVersion: v1
kind: Pod
metadata:
labels:
run: redis
name: redis
spec:
containers:
- image: redis
name: redis
ports:
- containerPort: 6379
Rt restartPolicy: Always

B.kubectl run redis --image=redis --restart=Never --port=6379
YAML File :
apiVersion: v1
kind: Pod
metadata:
labels:
run: redis
name: redis
spec:
containers:
ports:
- containerPort: 6679
Rt restartPolicy: Alwaysf

CKA Exam Question 42

Create a Pod nginx and specify a CPU request and a CPU limit of 0.5 and 1 respectively.

A.// create a yml file
kubectl run nginx-pod --image=nginx --restart=Never --dry-run -
o yaml > nginx-pod.yml
// add the resources section and create
vim nginx-pod.yaml
apiVersion: v1
kind: Pod
metadata:
labels:
run: nginx
name: nginx
spec:
containers:
- image: nginx
name: nginx
resources:
requests:
cpu: "0.5"
limits:
cpu: "1"
restartPolicy: Always
kubectl apply -f nginx-pod.yaml
// verify
kubectl top pod

B.// create a yml file
kubectl run nginx-pod --image=nginx --restart=Never --dry-run -
o yaml > nginx-pod.yml
// add the resources section and create
vim nginx-pod.yaml
apiVersion: v1
kind: Pod
metadata:
labels:
run: nginx
name: nginx
spec:
containers:
- image: nginx
name: nginx
resources:
requests:
cpu: "0.4"
limits:
cpu: "1"
restartPolicy: Always
kubectl apply -f nginx-pod.yaml
// verify
kubectl top pod

CKA Exam Question 43

From the pod label name=cpu-utilizer, find pods running high CPU workloads and write the name of the pod consuming most CPU to the file /opt/KUTR00102/KUTR00102.txt (which already exists).

CKA Exam Question 44

List all the pods sorted by created timestamp

CKA Exam Question 45

Create a ETCD backup of kubernetes cluster
Note : You don't need to memorize command, refer -
https://kubernetes.io/docs/tasks/administer-cluster/configureupgrade-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://172.17.0.15:2379
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

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://172.16.0.18:2379
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

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CKA Exam Question 41

CKA Exam Question 42

CKA Exam Question 43

CKA Exam Question 44

CKA Exam Question 45

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