ITDumpsKR 의 학습가이드에는RedHat EX280인증시험의 예상문제, 시험문제와 답입니다. 그리고 중요한 건 시험과 매우 유사한 시험문제와 답도 제공해드립니다. ITDumpsKR 을 선택하면 ITDumpsKR 는 여러분을 빠른시일내에 시험관련지식을 터득하게 할 것이고RedHat EX280인증시험도 고득점으로 패스하게 해드릴 것입니다.
| Section | Objectives |
|---|---|
| Resource Management and Quotas | - Understand cluster resource management - Configure resource quotas and limit ranges - Manage node selectors and tolerations |
| Configure and Manage Networking | - Configure network policies - Manage routes and ingress controllers - Troubleshoot network connectivity issues - Understand OpenShift networking model |
| Configure and Manage Storage | - Configure block and file storage - Understand storage classes and persistent volume claims - Provision and manage persistent storage |
| Implement Security and Access Control | - Configure RBAC (Role-Based Access Control) - Manage security contexts and service accounts - Understand OpenShift security features - Implement network security policies - Manage secrets and configMaps |
| Monitor and Troubleshoot Clusters | - View and analyze cluster logs - Monitor cluster health and metrics - Troubleshoot common issues - Manage cluster updates and upgrades |
| Deploy and Manage Applications | - Configure application routing and ingress - Deploy applications using CLI and web console - Manage application builds and image streams - Create and manage Deployments, Pods, and Services - Implement labels, annotations, and selectors |
| Understand and Navigate OpenShift Architecture | - Understand Kubernetes and OpenShift resource types - Describe the Red Hat OpenShift Container Platform architecture - Navigate the web console and command-line interfaces - Manage users and authentication providers |
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질문 # 25
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
정답：
설명：
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
질문 # 26
Start a Probe in Project Start
Task information Details:
Add a Liveness Probe to the deployment in project start using the Web Console.
정답：
설명：
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.
질문 # 27
Scale Application Manually
Task information Details:
Scale the httpd deployment to 5 replicas .
정답：
설명：
See the solution below in Explanation.
Explanation:
Solution:
* Scale the deployment:
oc scale deployment httpd --replicas=5
* Verify:
oc get deployment httpd
oc get pods -l app=httpd
* Confirm the desired, current, and available replica counts match.
This task checks direct workload scaling using the OpenShift CLI.
질문 # 28
Scale an application manually
Manually scale the minion application in the gru project to a total of 5 replicas.
정답：
설명：
See the solution below in Explanation.
Explanation:
Solution:
$ oc project gru
$ oc get pods
$ oc get all | grep deployment
$ oc scale --replicas=5 deployment.apps/minion
$ oc get pods
질문 # 29
Configure project permissions
Configure your OpenShift cluster to meet the following requirements: The following projects exist:
apollo manhattan gemini bluebook titan
The user account armstrong is an administrator for project apollo and project gemini The user account wozniak can view project titan but not administer or delete it
정답：
설명：
See the solution below in Explanation.
Explanation:
Solution:
$ oc new-project apollo
$ oc new-project manhattan
$ oc new-project gemini
$ oc new-project bluebook
$ oc new-project titan
$ oc adm policy add-role-to-user admin armstrong -n apollo
$ oc adm policy add-role-to-user admin armstrong -n gemini
$ oc adm policy add-role-to-user view wozniak -n titan
질문 # 30
......
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