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NEW QUESTION 24

a. Retrieve the content of the existing secret named default-token-xxxxx in the testing namespace.

Store the value of the token in the token.txt

b. Create a new secret named test-db-secret in the DB namespace with the following content:

username: mysql

password: password@123

Create the Pod name test-db-pod of image nginx in the namespace db that can access test-db-secret via a volume at path /etc/mysql-credentials

Answer:

Explanation:

To add a Kubernetes cluster to your project, group, or instance:

Navigate to your:

Project's Operations > Kubernetes page, for a project-level cluster.

Group's Kubernetes page, for a group-level cluster.

Admin Area > Kubernetes page, for an instance-level cluster.

Click Add Kubernetes cluster.

Click the Add existing cluster tab and fill in the details:

Kubernetes cluster name (required) - The name you wish to give the cluster.

Environment scope (required) - The associated environment to this cluster.

API URL (required) - It's the URL that GitLab uses to access the Kubernetes API. Kubernetes exposes several APIs, we want the "base" URL that is common to all of them. For example, https://kubernetes.example.com rather than https://kubernetes.example.com/api/v1.

Get the API URL by running this command:

kubectl cluster-info | grep -E 'Kubernetes master|Kubernetes control plane' | awk '/http/ {print $NF}' CA certificate (required) - A valid Kubernetes certificate is needed to authenticate to the cluster. We use the certificate created by default.

List the secrets with kubectl get secrets, and one should be named similar to default-token-xxxxx. Copy that token name for use below.

Get the certificate by running this command:

kubectl get secret <secret name> -o jsonpath="{['data']['ca\.crt']}"

NEW QUESTION 25

Context

Your organization's security policy includes:

ServiceAccounts must not automount API credentials

ServiceAccount names must end in "-sa"

The Pod specified in the manifest file /home/candidate/KSCH00301 /pod-m nifest.yaml fails to schedule because of an incorrectly specified ServiceAccount.

Complete the following tasks:

Task

1. Create a new ServiceAccount named frontend-sa in the existing namespace q a. Ensure the ServiceAccount does not automount API credentials.

2. Using the manifest file at /home/candidate/KSCH00301 /pod-manifest.yaml, create the Pod.

3. Finally, clean up any unused ServiceAccounts in namespace qa.

Answer:

Explanation:

NEW QUESTION 26

You can switch the cluster/configuration context using the following command:

[desk@cli] $ kubectl config use-context dev

Context:

A CIS Benchmark tool was run against the kubeadm created cluster and found multiple issues that must be addressed.

Task:

Fix all issues via configuration and restart the affected components to ensure the new settings take effect.

Fix all of the following violations that were found against the API server:

1.2.7 authorization-mode argument is not set to AlwaysAllow FAIL

1.2.8 authorization-mode argument includes Node FAIL

1.2.7 authorization-mode argument includes RBAC FAIL

Fix all of the following violations that were found against the Kubelet:

4.2.1 Ensure that the anonymous-auth argument is set to false FAIL

4.2.2 authorization-mode argument is not set to AlwaysAllow FAIL (Use Webhook autumn/authz where possible) Fix all of the following violations that were found against etcd:

2.2 Ensure that the client-cert-auth argument is set to true

Answer:

Explanation:

worker1 $ vim /var/lib/kubelet/config.yaml

anonymous:

enabled: true #Delete this

enabled: false #Replace by this

authorization:

mode: AlwaysAllow #Delete this

mode: Webhook #Replace by this

worker1 $ systemctl restart kubelet. # To reload kubelet config

ssh to master1

master1 $ vim /etc/kubernetes/manifests/kube-apiserver.yaml

- -- authorization-mode=Node,RBAC

master1 $ vim /etc/kubernetes/manifests/etcd.yaml

- --client-cert-auth=true

Explanation

ssh to worker1

worker1 $ vim /var/lib/kubelet/config.yaml

apiVersion: kubelet.config.k8s.io/v1beta1

authentication:

anonymous:

enabled: true #Delete this

enabled: false #Replace by this

webhook:

cacheTTL: 0s

enabled: true

x509:

clientCAFile: /etc/kubernetes/pki/ca.crt

authorization:

mode: AlwaysAllow #Delete this

mode: Webhook #Replace by this

webhook:

cacheAuthorizedTTL: 0s

cacheUnauthorizedTTL: 0s

cgroupDriver: systemd

clusterDNS:

- 10.96.0.10

clusterDomain: cluster.local

cpuManagerReconcilePeriod: 0s

evictionPressureTransitionPeriod: 0s

fileCheckFrequency: 0s

healthzBindAddress: 127.0.0.1

healthzPort: 10248

httpCheckFrequency: 0s

imageMinimumGCAge: 0s

kind: KubeletConfiguration

logging: {}

nodeStatusReportFrequency: 0s

nodeStatusUpdateFrequency: 0s

resolvConf: /run/systemd/resolve/resolv.conf

rotateCertificates: true

runtimeRequestTimeout: 0s

staticPodPath: /etc/kubernetes/manifests

streamingConnectionIdleTimeout: 0s

syncFrequency: 0s

volumeStatsAggPeriod: 0s

worker1 $ systemctl restart kubelet. # To reload kubelet config

ssh to master1

master1 $ vim /etc/kubernetes/manifests/kube-apiserver.yaml

master1 $ vim /etc/kubernetes/manifests/etcd.yaml

NEW QUESTION 27

SIMULATION

Create a network policy named allow-np, that allows pod in the namespace staging to connect to port 80 of other pods in the same namespace.

Ensure that Network Policy:-

1. Does not allow access to pod not listening on port 80.

2. Does not allow access from Pods, not in namespace staging.

Answer:

Explanation:

apiVersion: networking.k8s.io/v1

kind: NetworkPolicy

metadata:

name: network-policy

spec:

podSelector: {} #selects all the pods in the namespace deployed

policyTypes:

- Ingress

ingress:

- ports: #in input traffic allowed only through 80 port only

- protocol: TCP

port: 80

NEW QUESTION 28

Context:

Cluster: gvisor

Master node: master1

Worker node: worker1

You can switch the cluster/configuration context using the following command:

[desk@cli] $ kubectl config use-context gvisor

Context: This cluster has been prepared to support runtime handler, runsc as well as traditional one.

Task:

Create a RuntimeClass named not-trusted using the prepared runtime handler names runsc.

Update all Pods in the namespace server to run on newruntime.

Answer:

Explanation:

Find all the pods/deployment and edit runtimeClassName parameter to not-trusted under spec

[desk@cli] $ k edit deploy nginx

spec:

runtimeClassName: not-trusted. # Add this

Explanation

[desk@cli] $vim runtime.yaml

apiVersion: node.k8s.io/v1

kind: RuntimeClass

metadata:

name: not-trusted

handler: runsc

[desk@cli] $ k apply -f runtime.yaml

[desk@cli] $ k get pods

NAME READY STATUS RESTARTS AGE

nginx-6798fc88e8-chp6r 1/1 Running 0 11m

nginx-6798fc88e8-fs53n 1/1 Running 0 11m

nginx-6798fc88e8-ndved 1/1 Running 0 11m

[desk@cli] $ k get deploy

NAME READY UP-TO-DATE AVAILABLE AGE

nginx 3/3 11 3 5m

[desk@cli] $ k edit deploy nginx