RedHat Exam EX280 Materials: Red Hat Certified Specialist in OpenShift Administration exam - Itcertmaster Precise Free Download for your free downloading

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RedHat EX280 Exam Syllabus Topics:

Section	Objectives
Topic 1: Networking and Ingress	- Cluster networking 1. Troubleshoot network connectivity 2. Configure routes and ingress resources
Topic 2: Security and Troubleshooting	- Security management 1. Configure authentication and authorization 2. Manage SCC (Security Context Constraints) - Troubleshooting 1. Analyze logs and events 2. Diagnose cluster and application issues
Topic 3: OpenShift Cluster Installation and Configuration	- Cluster setup and installation verification 1. Install OpenShift clusters using installer-provisioned infrastructure 2. Validate cluster health and components
Topic 4: Cluster Administration	- Resource management 1. Manage projects, quotas, and limits 2. Deploy and manage applications - User and role management 1. Manage cluster roles and bindings 2. Configure users, groups, and RBAC
Topic 5: Storage and Persistence	- Persistent storage configuration 1. Provision persistent volumes and claims 2. Configure storage classes

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RedHat Red Hat Certified Specialist in OpenShift Administration exam Sample Questions (Q28-Q33):

NEW QUESTION # 28
Scale an application manually
Manually scale the minion application in the gru project to a total of 5 replicas.

Answer:

Explanation:
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

NEW QUESTION # 29
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 # 30
Create Project Template
Task information Details:
Generate the bootstrap project template, create it in openshift-config , update the cluster project configuration to use the template, and create a new project to validate it.

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
* Generate the default template:
oc adm create-bootstrap-project-template -o yaml > template.yaml
* Review and edit template.yaml if required.
* Create the template in openshift-config:
oc create -f template.yaml -n openshift-config
* Edit the cluster project configuration:
oc edit project.config.openshift.io/cluster
* Add or update:
spec:
projectRequestTemplate:
name: project-request
* Save and exit.
* Create a test project:
oc new-project test123
* Verify the template behavior:
oc get project test123 -o yaml
Notes:
* The uploaded lab text shows projects.config.openshift.io cluster-admin; the standard resource is project.
config.openshift.io/cluster.
This task checks cluster-wide customization of new-project creation behavior.

NEW QUESTION # 31
Scale Application Manually
Task information Details:
Scale the httpd deployment to 5 replicas .

Answer:

Explanation:
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.

NEW QUESTION # 32
Configure a secure route
Configure the oxcart application in the area51 project with the following requirements:
The application uses a route called oxcart
The application uses a CA signed certificate with the following subject fields:
/C=US/ST=NV/L=Hiko/O=CIA/OU=USAF/CN=classified.apps.domainxx.example.com The application is reachable only at the following address: https://classified.apps.domainxx.example.com The application produces output A utility script called newcert has been provided to create the CA signed certificate. You may enter the certificate parameters manually or pass the subject as a parameter.
Your certificate signing request will be uploaded to the CA where it will immediately be signed and then downloaded to your current directory.

Answer:

Explanation:
See the solution below in Explanation.
Explanation:
Solution:
$ oc project area51
$ oc get pods
$ oc get all | grep deployment
$ oc get route
$ oc delete route oxcart
$ openssl genrsa -out ex280.key 2048
$ openssl req -new -key ex280.key -out ex280.csr -subj "/C=US/ST=NV/L=Hiko/O=CIA/OU=USAF
/CN=classified.apps.domainxx.example.com"
$ openssl x509 -req -in ex280.csr -signkey ex280.key -out ex280.crt
$ oc create route edge oxcart --service oxcart --key ex280.key --cert ex280.crt --hostname classified.apps.
domainxx.example.com
$ oc get route
$ oc get svc

NEW QUESTION # 33
......

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