EX280 Red Hat Certified Specialist in OpenShift Administration exam Questions and Answers

Solution:

$ oc project mercury

$ oc get pods

$ oc get all | grep deploy

$ oc describe deployment.apps/atlas | grep -L memory

$ oc set resources deployment.apps/atlas --resources=memory=80Mi

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

Solution:

Switch to the quart project:

oc project quart

Create the secure route:

oc create route edge htquart \

--service=httpd \

--hostname=quart.apps.ocp4.example.com \

--cert=./req.crt \

--key=./req.key

Verify:

oc get route htquart

oc describe route htquart

Test resolution and access if DNS is available:

curl -k https://quart.apps.ocp4.example.com

This task checks route exposure, TLS termination, and secure ingress administration.

Solution:

$ oc project apples

$ oc create sa ex280sa

$ oc adm policy add-scc-to-user anyuid -z ex280sa

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.

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.