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| Certification Vendor: | Linux Foundation / CNCF |
|---|---|
| Exam Name: | Certified Kubernetes Security Specialist |
| Exam Number: | CKS |
| Exam Duration: | 120 minutes |
| Passing Score: | 67% |
| Exam Price: | $445 USD |
| Available Languages: | English, Simplified Chinese, Japanese |
| Certificate Validity Period: | 2 years |
| Exam Format: | Online proctored, Command-line operations, Performance-based, Hands-on tasks |
| Related Certifications: | Certified Kubernetes Application Developer (CKAD) Certified Kubernetes Administrator (CKA) |
| Real Exam Qty: | 15-20 tasks |
| Recommended Training: | LFS260: Kubernetes Security Essentials |
| Exam Registration: | Linux Foundation Training Portal |
| Sample Questions: | Linux Foundation CKS Sample Questions |
| Exam Way: | Online, remotely proctored, live monitoring via webcam and screen sharing |
| Pre Condition: | Must hold valid, non-expired Certified Kubernetes Administrator (CKA) certification |
| Official Syllabus URL: | https://training.linuxfoundation.org/certification/certified-kubernetes-security-specialist/ |
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Kubernetes is becoming increasingly popular as a container orchestration system, especially in cloud computing environments. With this growth comes the need for greater Kubernetes security expertise. The CKS exam addresses this need by testing candidates on their abilities to secure Kubernetes clusters and work with related security tools and best practices.
Linux Foundation CKS (Certified Kubernetes Security Specialist) Certification Exam is a professional certification that validates an individual's skills and knowledge in securing containerized applications and Kubernetes platforms. CKS Exam is designed for professionals who have experience in Kubernetes and containerization and are looking to advance their careers by demonstrating their expertise in secure container orchestration.
NEW QUESTION # 33
SIMULATION
A container image scanner is set up on the cluster.
Given an incomplete configuration in the directory
/etc/kubernetes/confcontrol and a functional container image scanner with HTTPS endpoint https://test-server.local.8081/image_policy
1. Enable the admission plugin.
2. Validate the control configuration and change it to implicit deny.
Finally, test the configuration by deploying the pod having the image tag as latest.
Answer:
Explanation:
SeetheExplanationbelowExplanation:
ssh-add ~/.ssh/tempprivate
eval "$(ssh-agent -s)"
cd contrib/terraform/aws
vi terraform.tfvars
terraform init
terraform apply -var-file=credentials.tfvars
ansible-playbook -i ./inventory/hosts ./cluster.yml -e ansible_ssh_user=core -e bootstrap_os=coreos -b --become-user=root --flush-cache -e ansible_user=core
NEW QUESTION # 34
You are managing a Kubernetes cluster running an application that uses a private container registry. The registry is secured using basic authentication, but the credentials are stored in a secret in the cluster. You want to ensure that the application container can access the registry without storing the credentials directly within the container image.
How would you configure the application deployment to access the private registry securely without exposing the credentials?
Answer:
Explanation:
Solution (Step by Step) :
1. Create a Secret:
- Create a secret that stores the registry username and password.
- Example:
2. Configure the Service Account - Create a service account tor the application. - Add the 'imagePullSecrets' field to the service account to reference the secret. - Example:
3. Update the Deployment: - Update the deployment YAML to use the service account. - Example:
4. Apply the Changes: - Apply the secret, service account, and updated deployment using 'kubectl apply -f commands.
NEW QUESTION # 35
Your Kubernetes cluster is configured with a default service account with broad permissions. You need to disable this default service account to enhance security and limit access to cluster resources.
Answer:
Explanation:
Solution (Step by Step):
1. Identify Default Service Account:
- Use the command 'kubectl get serviceaccount -n default default to identify the default service account in the default namespace.
2. Remove Default Service Account:
- You need to remove the default service account using the command 'kubectl delete serviceaccount default -n default
3. Review Permissions Check your RBAC configuration and ensure that no other roles or bindings grant unnecessary permissions to any other service accounts.
4. Create Custom Service Accounts: Create new, dedicated service accounts for each application or component that requires access to the cluster.
Assign specific roles or permissions to each service account based on its requirements.
Note: This process may require changes to your applications or configurations to use the new, dedicated service accounts instead of the default service account.
NEW QUESTION # 36
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:
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
NEW QUESTION # 37
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 # 38
......
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