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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Minimize Microservice Vulnerabilities | 20% | - Set appropriate security contexts for pods and containers - Use PSP to enforce security controls - Use AppArmor or seccomp profiles to constrain container behavior - Use OPA Gatekeeper to enforce security controls - Understand the principle of immutable containers - Configure network policies for namespace isolation |
| Topic 2: Monitoring, Logging, and Runtime Security | 20% | - Audit and detect logs and events for anomalies - Minimize the attack surface using container health indicators - Detect threats at the container level - Falco - container security monitoring and threat detection - Understand and monitor network traffic - Perform behavioral analytics to detect malicious activity |
| Topic 3: Supply Chain Security | 20% | - Sign container images and verify signatures - Use image admission controllers to prevent use of untrusted images - Use distroless images for static workload - Understand the software supply chain best practices - Understand the container build process - Understand image security scanning and its workflow - Minimize base image footprint - Use static analysis tools to detect vulnerabilities |
| Topic 4: System Hardening | 15% | - Modify host components to improve security - Kernel defaults and parameters using sysctl - Enable audit logging - Understand the concept of OPA (Open Policy Agent) and Gatekeeper |
| Topic 5: Cluster Hardening | 15% | - Minimize admission of containers with FlexVolume volumes - Minimize admission of containers with allowPrivilegeEscalation - Minimize admission of containers with sharing the host IPC namespace - Minimize admission of privileged containers - Minimize admission of containers without seccomp profiles - Minimize admission of containers without AppArmor profile - Minimize admission of containers with sharing the host process namespace - Minimize admission of containers with hostPath volumes - Minimize admission of containers with capabilities assigned - Minimize admission of containers with added capabilities - Minimize admission of containers that allow host namespaces - Minimize admission of containers without a security context - Minimize admission of containers with raw block devices - Minimize admission of containers with sharing the host network namespace |
| Topic 6: Cluster Setup | 10% | - Configure TLS certificates and minimum version for etcd - Use Pod Security Policies to control security-related pod behaviors - Implement Pod-to-Pod encryption using mTLS or WireGuard - Understand the security implications of embedding cloud provider flags - Use Cis benchmarks to check Kubernetes cluster settings - Manage sensitive information in clusters - Use role-based access control (RBAC) to minimize exposure |
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NEW QUESTION # 56
Given an existing Pod named nginx-pod running in the namespace test-system, fetch the service-account-name used and put the content in /candidate/KSC00124.txt Create a new Role named dev-test-role in the namespace test-system, which can perform update operations, on resources of type namespaces.
Answer: A
NEW QUESTION # 57
Enable audit logs in the cluster, To Do so, enable the log backend, and ensure that
1. logs are stored at /var/log/kubernetes/kubernetes-logs.txt.
2. Log files are retained for 5 days.
3. at maximum, a number of 10 old audit logs files are retained.
Edit and extend the basic policy to log:
Answer: A
Explanation:
2. Log the request body of deployments changes in the namespace kube-system.
3. Log all other resources in core and extensions at the Request level.
4. Don't log watch requests by the "system:kube-proxy" on endpoints or
NEW QUESTION # 58
SIMULATION
Documentation dockerd
You must connect to the correct host . Failure to do so may result in a zero score.
[candidate@base] $ ssh cks000037
Task
Perform the following tasks to secure the cluster node cks000037 :
Remove user developer from the docker group.
Do not remove the user from any other group.
Reconfigure and restart the Docker daemon to ensure that the socket
file located at /var/run/docker.sock is owned by the group root.
Re-configure and restart the Docker daemon to ensure it does not listen on any TCP port.
After completing your work, ensure the Kubernetes cluster is healthy.
Answer:
Explanation:
See the Explanation below for complete solution
Explanation:
1) Connect to the correct host
ssh cks000037
sudo -i
2) Remove user developer from the docker group ONLY
2.1 Verify current groups (optional but fast)
id developer
2.2 Remove ONLY from docker group
gpasswd -d developer docker
2.3 Verify removal
id developer
✅ docker should not appear; other groups must remain.
3) Reconfigure Docker to secure the socket and disable TCP
Docker config file:
vi /etc/docker/daemon.json
3.1 Set socket group to root and disable TCP listeners
Ensure the file contains exactly these relevant settings (merge with existing JSON if present):
{
"group": "root",
"hosts": ["unix:///var/run/docker.sock"]
}
Important:
"group": "root" → docker.sock owned by group root
"hosts" includes ONLY the unix socket (no tcp://)
If the file already exists with other keys, add/adjust only these keys and keep valid JSON (commas!).
Save and exit:
:wq
4) Restart Docker daemon
systemctl daemon-reload
systemctl restart docker
systemctl status docker --no-pager
5) Verify Docker socket ownership and permissions
ls -l /var/run/docker.sock
Expected:
srw-rw---- 1 root root ...
✅ Owner: root
✅ Group: root
6) Verify Docker is NOT listening on TCP
ss -lntp | grep docker
Expected:
No output (or nothing bound to TCP by dockerd)
Optional double-check:
ps aux | grep dockerd | grep -v grep
Ensure no -H tcp://... flags.
7) Ensure Kubernetes cluster is healthy
7.1 Check node and pods
export KUBECONFIG=/etc/kubernetes/admin.conf
kubectl get nodes
kubectl get pods -A
All nodes should be Ready, core pods Running.
NEW QUESTION # 59
You have a Kubernetes cluster running a critical application with multiple deployments. You need to ensure that only authorized users can access the application's configuration files stored in ConfigMaps.
Answer:
Explanation:
Solution (Step by Step) :
1. Create a ROE for ConngMap Access:
- Create a Role YAML file named 'configmap-reader.yaml' to grant read-only access to ConfigMaps:
2. Create a RoIeBinding to Assign the Role: - Create a RoleBinding YAML file named 'configmap-reader-binding.yaml' to bind the 'configmap-reader' role to a specific user or group:
3. Apply the Role and RoleBinding: - Apply the YAML files using kubectl apply -f configmap-reader.yaml configmap-reader-binding.yaml 4. Create a ConfigMap: - Create a ConfigMap named 'app-config' that contains sensitive configuration information:
5. Verify Access Restrictions: - Log in as the 'authorized-user and try accessing the 'app-config' ConfigMap using 'kubectl get configmap app-config' _ You should be able to view the ContigMap data. - Log in as a different user who does not have the 'configmap-reader' role assigned. Try accessing the 'app-config' ConfigMap. You should not be able to access it.
NEW QUESTION # 60
You are developing a new microservice that will be deployed to a Kubernetes cluster. You need to ensure that the Kubernetes YAML manifests for the microservice adhere to security best practices and are compatible with the clusters configuration. Implement a solution that uses KubeLinter to validate the YAML manifests before deployment.
Answer:
Explanation:
Solution (Step by Step):
1. Install KubeLinter: Download and install the 'kubevar binary from the official GitHub repository
2. Create a KubeLinter configuration file (optional): Define a .kubeval.yaml' file in the root directory of your project to specify any custom rules or checks.
3. Validate your YAML manifests using KubeLinter: Use the "kubeval' command to validate your YAML manifests against the Kubernetes schema and your custom rules.
bash
kubeval deployment.yaml service.yaml
4. Integrate KubeLinter into your CI/CD pipeline: Add a step to your pipeline that runs KubeLinter against your YAML manifests. This step should be executed before the manifests are deployed to the cluster.
5. Address any issues reported by KubeLinter. Analyze the output of KubeLinter and make the necessary changes to your YAML manifests to address any identified issues.
NEW QUESTION # 61
......
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