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| Section | Objectives |
|---|---|
| Topic 1: Understand and Navigate OpenShift Architecture | - Manage users and authentication providers - Understand Kubernetes and OpenShift resource types - Describe the Red Hat OpenShift Container Platform architecture - Navigate the web console and command-line interfaces |
| Topic 2: Monitor and Troubleshoot Clusters | - View and analyze cluster logs - Monitor cluster health and metrics - Troubleshoot common issues - Manage cluster updates and upgrades |
| Topic 3: Configure and Manage Networking | - Understand OpenShift networking model - Troubleshoot network connectivity issues - Configure network policies - Manage routes and ingress controllers |
| Topic 4: Implement Security and Access Control | - Manage secrets and configMaps - Manage security contexts and service accounts - Understand OpenShift security features - Configure RBAC (Role-Based Access Control) - Implement network security policies |
| Topic 5: Configure and Manage Storage | - Configure block and file storage - Understand storage classes and persistent volume claims - Provision and manage persistent storage |
| Topic 6: Deploy and Manage Applications | - Create and manage Deployments, Pods, and Services - Deploy applications using CLI and web console - Manage application builds and image streams - Configure application routing and ingress - Implement labels, annotations, and selectors |
| Topic 7: Resource Management and Quotas | - Manage node selectors and tolerations - Understand cluster resource management - Configure resource quotas and limit ranges |
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15. Frage
Use Secret in Monday Project
Task information Details:
Use the secret created earlier as environment variables in deployment monday .
Antwort:
Begründung:
See the solution below in Explanation.
Explanation:
Solution:
* Switch to the correct project if needed:
oc project monday
* Inject environment variables from the secret:
oc set env deployment/monday --from=secret/magic
* Verify:
oc set env deployment/monday --list
oc describe deployment monday
Notes:
* The uploaded lab references secret/file-secret, but Task 8 clearly intends the secret to be named magic .
* In a real exam, match the actual secret name present in the cluster.
This task tests secret consumption by workloads through environment variable injection.
16. Frage
Create Service Account in QED
Task information Details:
Switch to project qed .
Create service account project1-sa .
Grant the anyuid SCC to that service account.
Antwort:
Begründung:
See the solution below in Explanation.
Explanation:
Solution:
* Switch to the project:
oc project qed
* Create the service account:
oc create serviceaccount project1-sa -n qed
* Grant the SCC:
oc adm policy add-scc-to-user anyuid -z project1-sa -n qed
* Verify:
oc get sa project1-sa -n qed
oc adm policy who-can use scc anyuid
Why this matters:
* anyuid allows containers to run with arbitrary user IDs when an application requires it.
* This is a common administrative task in OpenShift for third-party container images.
This task validates service account creation and SCC assignment.
17. Frage
Start a Probe in Project Start
Task information Details:
Add a Liveness Probe to the deployment in project start using the Web Console.
Antwort:
Begründung:
See the solution below in Explanation.
Explanation:
Solution:
* Open the Web Console.
* Switch to project start .
* Navigate to: Workloads # Deployments
* Select the target deployment.
* Click the action menu and choose: Add Health Checks
* Select Liveness Probe .
* Configure the appropriate probe type:
* HTTP
* TCP
* or Command
* Enter the required endpoint or command based on the application.
* Save the configuration.
* Verify the deployment updates successfully and the pod status remains healthy.
CLI alternative if needed:
oc set probe deployment/ < deployment-name >
--liveness --get-url=http://:8080/ --initial-delay-seconds=10
This task measures health-check configuration for workload self-recovery.
18. Frage
Autoscale of Pods
Task information Details:
Create an HPA for httpd with min=2 , max=9 , and CPU target 60% .
Set resource requests on the httpd deployment so autoscaling can function properly.
Antwort:
Begründung:
See the solution below in Explanation.
Explanation:
Solution:
* Set resource requests on the deployment:
oc set resources deployment httpd --requests=cpu=50m,memory=100Mi
* Create the HPA:
oc autoscale deployment httpd --min=2 --max=9 --cpu-percent=60
* Verify:
oc get hpa
oc describe hpa httpd
oc get deployment httpd -o yaml
Why resource requests matter:
* HPA CPU utilization is calculated against requested CPU.
* Without requests, percentage-based autoscaling is incomplete or invalid.
This task focuses on autoscaling prerequisites and policy creation.
19. Frage
Scale an application automatically
Automatically scale the hydra application deployment configuration in the lerna project with the following requirements:
Minimum number of replicas: 6 Maximum number of replicas: 9
Target average CPU utilization: 60 percent Container CPU resource request: 25m Container CPU resource limit: 100m
Antwort:
Begründung:
See the solution below in Explanation.
Explanation:
Solution:
$ oc project lerna
$ oc get pods
$ oc get all | grep deployment
$ oc autoscale deployment.apps/hydra --max=9 --min=6 --cpu-percent=60
$ oc get hpa
$ oc set resources deployment.apps/hydra --limits=cpu=100m -- requests=cpu=25m
$ oc describe deployment.apps/hydra | grep Limits -A3
20. Frage
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