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The RedHat EX280 Exam tests what areas, specifically?
The RedHat EX280 Exam tests the following areas:
Deploying, scaling and monitoring OpenShift services such as storage, networking and load balancing using Ansible Tower.
Configuring development tools such as Eclipse Che to support collaborative application development within an OpenShift cluster environment.
Managing Container registry, registry mirrors and images using Red Hat Storage as well as deploying and managing projects on OpenShift using JBDS version 7 or later version of JBDS.
Managing the lifecycle of applications using OpenShift cartridge-based application development tools like Eclipse Che and JBoss Developer Studio (JBDS).
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Reference: https://www.redhat.com/en/services/training/red-hat-certified-openshift-administrator-exam
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RedHat EX280 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Monitor and Troubleshoot Clusters | - Manage cluster updates and upgrades - View and analyze cluster logs - Troubleshoot common issues - Monitor cluster health and metrics |
| Topic 2: Implement Security and Access Control | - Understand OpenShift security features - Manage security contexts and service accounts - Configure RBAC (Role-Based Access Control) - Implement network security policies - Manage secrets and configMaps |
| Topic 3: Understand and Navigate OpenShift Architecture | - Manage users and authentication providers - Navigate the web console and command-line interfaces - Describe the Red Hat OpenShift Container Platform architecture - Understand Kubernetes and OpenShift resource types |
| Topic 4: Resource Management and Quotas | - Understand cluster resource management - Manage node selectors and tolerations - Configure resource quotas and limit ranges |
| Topic 5: Configure and Manage Storage | - Configure block and file storage - Provision and manage persistent storage - Understand storage classes and persistent volume claims |
| Topic 6: Deploy and Manage Applications | - Configure application routing and ingress - Implement labels, annotations, and selectors - Manage application builds and image streams - Create and manage Deployments, Pods, and Services - Deploy applications using CLI and web console |
| Topic 7: Configure and Manage Networking | - Configure network policies - Understand OpenShift networking model - Manage routes and ingress controllers - Troubleshoot network connectivity issues |
RedHat Red Hat Certified Specialist in OpenShift Administration Sample Questions:
Create a PV and PVC
Task information Details:
Create a PersistentVolume named landing-pv with 1Gi , ReadOnlyMany , NFS backend, and Retain reclaim policy.
Create a PersistentVolumeClaim named landing-pvc requesting 1Gi , ReadOnlyMany , and storage class nfs2 .
Correct Answer:
See the solution below in Explanation.
Explanation:
Solution:
* Create landing-pv.yaml:
apiVersion: v1
kind: PersistentVolume
metadata:
name: landing-pv
spec:
capacity:
storage: 1Gi
accessModes:
- ReadOnlyMany
nfs:
path: /open001
server: 192.168.2.2
persistentVolumeReclaimPolicy: Retain
* Apply it:
oc apply -f landing-pv.yaml
* Create landing-pvc.yaml:
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: landing-pvc
spec:
accessModes:
- ReadOnlyMany
resources:
requests:
storage: 1Gi
storageClassName: nfs2
* Apply it:
oc apply -f landing-pvc.yaml
* Verify:
oc get pv
oc get pvc
oc describe pv landing-pv
oc describe pvc landing-pvc
This task validates persistent storage provisioning and claim binding concepts.
Create Resource Quota for Project Rocky
Task information Details:
Use project rocky and create a quota named rocky-quota with limits for CPU, memory, pods, services, replication controllers, and secrets.
Correct Answer:
See the solution below in Explanation.
Explanation:
Solution:
* Ensure the project exists and switch to it:
oc new-project rocky
oc project rocky
* Create the quota:
oc create quota rocky-quota \
--hard=limits.cpu=2,limits.memory=1Gi,pods=3,services=6,replicationcontrollers=6,secrets=6
* Verify:
oc get resourcequota -n rocky
oc describe quota rocky-quota -n rocky
Notes:
* The lab text uses cpu=2,memory=1G and secret=6; in real OpenShift usage, the more reliable forms are limits.cpu, limits.memory, and secrets.
* If the exam specifically expects the exact resource names shown in the lab environment, use what the cluster accepts.
This task checks quota enforcement and namespace resource governance.
Managing Group
Task information Details:
Create the groups site-users and guest-users .
Add qwerty to guest-users .
Add harry and susan to site-users .
Grant edit to site-users on test .
Grant view to guest-users on demo .
Correct Answer:
See the solution below in Explanation.
Explanation:
Solution:
* Create the groups:
oc adm groups new site-users
oc adm groups new guest-users
* Add users to groups:
oc adm groups add-users guest-users qwerty
oc adm groups add-users site-users harry susan
* Grant edit role on test to site-users:
oc policy add-role-to-group edit site-users -n test
* Grant view role on demo to guest-users:
oc policy add-role-to-group view guest-users -n demo
* Verify:
oc get groups
oc describe group site-users
oc describe group guest-users
oc get rolebinding -n test
oc get rolebinding -n demo
This task measures practical administration of OpenShift groups and project-scoped RBAC assignments.
Scale Application Manually
Task information Details:
Scale the httpd deployment to 5 replicas .
Correct Answer:
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.
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