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| Section | Objectives |
|---|---|
| Topic 1: Monitor and Troubleshoot Clusters | - Troubleshoot common issues - Manage cluster updates and upgrades - View and analyze cluster logs - Monitor cluster health and metrics |
| Topic 2: Configure and Manage Storage | - Provision and manage persistent storage - Configure block and file storage - Understand storage classes and persistent volume claims |
| Topic 3: Implement Security and Access Control | - Implement network security policies - Configure RBAC (Role-Based Access Control) - Understand OpenShift security features - Manage security contexts and service accounts - Manage secrets and configMaps |
| Topic 4: Configure and Manage Networking | - Configure network policies - Manage routes and ingress controllers - Troubleshoot network connectivity issues - Understand OpenShift networking model |
| Topic 5: Resource Management and Quotas | - Manage node selectors and tolerations - Configure resource quotas and limit ranges - Understand cluster resource management |
| Topic 6: Understand and Navigate OpenShift Architecture | - Navigate the web console and command-line interfaces - Understand Kubernetes and OpenShift resource types - Describe the Red Hat OpenShift Container Platform architecture - Manage users and authentication providers |
| Topic 7: Deploy and Manage Applications | - Implement labels, annotations, and selectors - Deploy applications using CLI and web console - Manage application builds and image streams - Configure application routing and ingress - Create and manage Deployments, Pods, and Services |
RedHat EX280 practice questions are based on recently released RedHat EX280 exam objectives. Includes a user-friendly interface allowing you to take the Red Hat Certified Specialist in OpenShift Administration exam practice exam on your computers, like downloading the PDF, Web-Based EX280 Practice Test BraindumpStudy, and Desktop RedHat EX280 practice exam BraindumpStudy.
NEW QUESTION # 14
Install Helm Chart
Task information Details:
Add the Helm repository do280-repo and install the example-app release from the specified chart.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Add the repository:
helm
repo add do280-repo http://helm.ocp4.example.com/charts
* Refresh repositories:
helm repo update
* Install the chart:
helm install example-app do280-repo/etherpad
* Verify:
helm list
oc get all
Notes:
* The uploaded lab text appears to spell the chart name incorrectly as ehterpad.
* In practice, use the actual chart name published in the repo. If the lab repo truly contains the typo, follow the repo index result.
This task tests Helm repository management and application deployment.
NEW QUESTION # 15
Deploy an application
Deploy the application called rocky in the bullwinkle project so that the following conditions are true:
The
application is reachable at the following address: http://rocky.apps.domainXX.example.com The application produces output
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
$ oc project bullwinkle
$ oc get pods
$ oc get all | grep deploy
$ oc get nodes
$ oc describe nodes | grep -i taint
$ oc adm taint nodes worker0 key1=value1:NoSchedule-
$ oc adm taint nodes worker1 key1=value1:NoSchedule-
$ oc describe nodes | grep -i taint
$ oc get route
$ oc delete route rocky
$ oc expose svc rocky --hostname rocky.apps.domainxx.example.com
$ oc get route
NEW QUESTION # 16
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
Answer:
Explanation:
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
NEW QUESTION # 17
Create LimitRanges for Project Darpa
Task information Details:
Switch to project darpa and create a LimitRange with Pod and Container minimums and maximums of CPU and memory, plus default container values.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Switch to the target project:
oc project darpa
* Create a YAML file, for example limitrange.yaml:
apiVersion: v1
kind: LimitRange
metadata:
name: darpa-limits
namespace: darpa
spec:
limits:
- type: Pod
max:
cpu: 300m
memory: 300Mi
min:
cpu: 5m
memory: 5Mi
- type: Container
max:
cpu: 300m
memory: 300Mi
min:
cpu: 5m
memory: 5Mi
default:
cpu: 100m
memory: 100Mi
* Apply it:
oc apply -f limitrange.yaml
* Verify:
oc get limitrange -n darpa
oc describe limitrange darpa-limits -n darpa
This task validates namespace-level defaulting and constraint policies for pod scheduling and resource consumption.
NEW QUESTION # 18
Manage Cluster Project and Permission
Task information Details:
Create projects apollo , test , and demo .
Grant bob the cluster-admin role.
Prevent ordinary authenticated users from self-provisioning projects.
Allow john to create projects.
Give natasha view-only access to test and apollo .
Give armstrong admin access to apollo .
Remove the kubeadmin user secret.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Create the projects:
oc new-project apollo
oc new-project test
oc new-project demo
* Grant cluster-admin to bob:
oc adm policy add-cluster-role-to-user cluster-admin bob
* Disable normal self-provisioning for authenticated users:
oc adm policy remove-cluster-role-from-group self-provisioner system:authenticated:oauth
* Allow john to self-provision:
oc adm policy add-cluster-role-to-user self-provisioner john
* Give natasha view access in test and apollo:
oc policy add-role-to-user view natasha -n test
oc policy add-role-to-user view natasha -n apollo
* Give armstrong admin in apollo:
oc policy add-role-to-user admin armstrong -n apollo
* Remove kubeadmin secret:
oc delete secret kubeadmin -n kube-system
* Verify permissions:
oc adm policy who-can create projectrequests
oc describe rolebinding.rbac -n apollo
oc describe rolebinding.rbac -n test
This task tests core OpenShift administration around project lifecycle control, cluster-level RBAC, and decommissioning default bootstrap credentials.
NEW QUESTION # 19
......
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