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下載Certified Kubernetes Security Specialist (CKS)考試題庫
NEW QUESTION 30
Using the runtime detection tool Falco, Analyse the container behavior for at least 20 seconds, using filters that detect newly spawning and executing processes in a single container of Nginx.
store the incident file art /opt/falco-incident.txt, containing the detected incidents. one per line, in the format
[timestamp],[uid],[processName]
- A. Send us your
- B. Send us your feedback on it.
Answer: B
NEW QUESTION 31
SIMULATION
Fix all issues via configuration and restart the affected components to ensure the new setting takes effect.
Fix all of the following violations that were found against the API server:- a. Ensure that the RotateKubeletServerCertificate argument is set to true.
b. Ensure that the admission control plugin PodSecurityPolicy is set.
c. Ensure that the –kubelet-certificate-authority argument is set as appropriate.
Fix all of the following violations that were found against the Kubelet:- a. Ensure the –anonymous-auth argument is set to false.
b. Ensure that the –authorization-mode argument is set to Webhook.
Fix all of the following violations that were found against the ETCD:-
a. Ensure that the –auto-tls argument is not set to true
b. Ensure that the –peer-auto-tls argument is not set to true
Hint: Take the use of Tool Kube-Bench
Answer:
Explanation:
Fix all of the following violations that were found against the API server:- a. Ensure that the RotateKubeletServerCertificate argument is set to true.
apiVersion: v1
kind: Pod
metadata:
creationTimestamp: null
labels:
component: kubelet
tier: control-plane
name: kubelet
namespace: kube-system
spec:
containers:
– command:
– kube-controller-manager
+ – –feature-gates=RotateKubeletServerCertificate=true
image: gcr.io/google_containers/kubelet-amd64:v1.6.0
livenessProbe:
failureThreshold: 8
httpGet:
host: 127.0.0.1
path: /healthz
port: 6443
scheme: HTTPS
initialDelaySeconds: 15
timeoutSeconds: 15
name: kubelet
resources:
requests:
cpu: 250m
volumeMounts:
– mountPath: /etc/kubernetes/
name: k8s
readOnly: true
– mountPath: /etc/ssl/certs
name: certs
– mountPath: /etc/pki
name: pki
hostNetwork: true
volumes:
– hostPath:
path: /etc/kubernetes
name: k8s
– hostPath:
path: /etc/ssl/certs
name: certs
– hostPath:
path: /etc/pki
name: pki
b. Ensure that the admission control plugin PodSecurityPolicy is set.
audit: “/bin/ps -ef | grep $apiserverbin | grep -v grep”
tests:
test_items:
– flag: “–enable-admission-plugins”
compare:
op: has
value: “PodSecurityPolicy”
set: true
remediation: |
Follow the documentation and create Pod Security Policy objects as per your environment.
Then, edit the API server pod specification file $apiserverconf
on the master node and set the –enable-admission-plugins parameter to a value that includes PodSecurityPolicy :
–enable-admission-plugins=…,PodSecurityPolicy,…
Then restart the API Server.
scored: true
c. Ensure that the –kubelet-certificate-authority argument is set as appropriate.
audit: “/bin/ps -ef | grep $apiserverbin | grep -v grep”
tests:
test_items:
– flag: “–kubelet-certificate-authority”
set: true
remediation: |
Follow the Kubernetes documentation and setup the TLS connection between the apiserver and kubelets. Then, edit the API server pod specification file
$apiserverconf on the master node and set the –kubelet-certificate-authority parameter to the path to the cert file for the certificate authority.
–kubelet-certificate-authority=<ca-string>
scored: true
Fix all of the following violations that were found against the ETCD:-
a. Ensure that the –auto-tls argument is not set to true
Edit the etcd pod specification file $etcdconf on the master node and either remove the –auto-tls parameter or set it to false. –auto-tls=false b. Ensure that the –peer-auto-tls argument is not set to true Edit the etcd pod specification file $etcdconf on the master node and either remove the –peer-auto-tls parameter or set it to false. –peer-auto-tls=false
NEW QUESTION 32
Cluster: dev
Master node: master1
Worker node: worker1
You can switch the cluster/configuration context using the following command:
[desk@cli] $ kubectl config use-context dev
Task:
Retrieve the content of the existing secret named adam in the safe namespace.
Store the username field in a file names /home/cert-masters/username.txt, and the password field in a file named /home/cert-masters/password.txt.
1. You must create both files; they don’t exist yet.
2. Do not use/modify the created files in the following steps, create new temporary files if needed.
Create a new secret names newsecret in the safe namespace, with the following content:
Username: dbadmin
Password: moresecurepas
Finally, create a new Pod that has access to the secret newsecret via a volume:
Namespace: safe
Pod name: mysecret-pod
Container name: db-container
Image: redis
Volume name: secret-vol
Mount path: /etc/mysecret
Answer:
Explanation:
1. Get the secret, decrypt it & save in files
k get secret adam -n safe -o yaml
2. Create new secret using –from-literal
[desk@cli] $k create secret generic newsecret -n safe –from-literal=username=dbadmin –from-literal=password=moresecurepass
3. Mount it as volume of db-container of mysecret-pod
Explanation
[desk@cli] $k create secret generic newsecret -n safe –from-literal=username=dbadmin –from-literal=password=moresecurepass secret/newsecret created
[desk@cli] $vim /home/certs_masters/secret-pod.yaml
apiVersion: v1
kind: Pod
metadata:
name: mysecret-pod
namespace: safe
labels:
run: mysecret-pod
spec:
containers:
– name: db-container
image: redis
volumeMounts:
– name: secret-vol
mountPath: /etc/mysecret
readOnly: true
volumes:
– name: secret-vol
secret:
secretName: newsecret
[desk@cli] $ k apply -f /home/certs_masters/secret-pod.yaml
pod/mysecret-pod created
[desk@cli] $ k exec -it mysecret-pod -n safe – cat /etc/mysecret/username dbadmin
[desk@cli] $ k exec -it mysecret-pod -n safe – cat /etc/mysecret/password moresecurepas
NEW QUESTION 33
Create a Pod name Nginx-pod inside the namespace testing, Create a service for the Nginx-pod named nginx-svc, using the ingress of your choice, run the ingress on tls, secure port.
- A. Send us your Feedback on this.
Answer: A
NEW QUESTION 34
……