EX380 Exam Dumps and Practice Questions

Step 1: Ensure the client certificate and private key files are available.

The lab uses audit.crt and tls.key.

Step 2: Run the command:

oc config set-credentials audit --client-certificate audit.crt --client-key tls.key --embed-certs --kubeconfig audit.config

Step 3: Confirm the user entry is written.

The lab output shows:

User 'audit' set.

Detailed explanation:

This command creates or updates the audit user entry inside the kubeconfig file audit.config. It points the user to a client certificate and private key, and the --embed-certs option stores certificate material directly inside the kubeconfig rather than only referencing external files. That makes the kubeconfig more portable because it can be moved and used without separately copying the certificate files, provided the embedded content is valid. In certificate-based authentication, the private key proves client possession while the certificate presents the approved identity. If the certificate and key do not match, authentication will fail. This step does not yet define what cluster or namespace the user works against; it only defines the credential identity.

Step 1: Log in to the OpenShift web console.

This Task is explicitly defined as a GUI workflow.

Step 2: Navigate to Operators.

Installed logging components are managed through the operator framework.

Step 3: Open Installed Operators.

This lists operators already deployed in the cluster.

Step 4: Select Red Hat OpenShift Logging.

This operator manages the cluster logging stack and its custom resources.

Step 5: Open the ClusterLogging instance.

The Task SIMULATION refers to editing the existing ClusterLogging custom resource.

Step 6: Switch to YAML View.

This allows direct editing of the logging custom resource specification.

Step 7: Edit the collection type and set it to vector.

This changes the log collector implementation.

Step 8: Click Save.

The operator will reconcile the resource and apply the updated collector configuration.

Detailed explanation:

The ClusterLogging custom resource controls the logging stack behavior in OpenShift. Changing the collection type to vector updates which collector technology is used for gathering node and container logs. In operator-managed platforms, direct YAML edits to the custom resource are the preferred method for changing managed behavior because the operator then applies and maintains the desired state. This Task tests both navigation skills in the web console and knowledge of where logging behavior is configured. Saving the resource triggers reconciliation, which is a core OpenShift operator pattern: the declared configuration is read and enforced by the operator rather than by manual per-pod changes.

Label the chosen worker nodes

oc label node worker-1 workload=payments

oc label node worker-2 workload=payments

Node labels are key/value metadata used by the scheduler.

Add a nodeSelector to the deployment

oc -n payments patch deploy api --type=merge -p '{

'spec':{'template':{'spec':{'nodeSelector':{'workload':'payments'}}}}

}'

Forces pods to schedule only to nodes that match the label.

Verify placement

oc -n payments get pods -o wide

Confirms pods are running on the intended nodes.

Step 1: Identify the application namespace after restore.

The lab shows the namespace as my-app-namespace.

Step 2: Run the SCC assignment command:

oc adm policy add-scc-to-user anyuid -z default -n my-app-namespace

Step 3: Confirm the role binding is applied.

The lab output shows:

clusterrole.rbac.authorization.k8s.io/system:openshift:scc:anyuid added: 'default'

Detailed explanation:

After a restore, the application may fail if its pods require a security context not permitted by the default SCC allocation. This command grants the anyuid SCC to the default service account in the my-app-namespace project. The -z default syntax targets the default service account, which many restored workloads use if no custom service account is defined. The anyuid SCC allows containers to run with arbitrary user IDs, which some legacy or prebuilt images require. In OpenShift, SCC mismatches commonly cause pods to remain in pending or crash-related states. Assigning the proper SCC resolves those admission issues so workloads can start successfully. This step is therefore a post-restore operational fix to align security policy with application requirements.

Create a group sync config file (example groupsync.yaml)

This file defines how OpenShift queries LDAP for groups and members.

Run a one-time group sync

oc adm groups sync --sync-config=groupsync.yaml --confirm

--confirm actually applies changes (without it, it's a dry-run preview).

Verify groups created/updated

oc get groups

oc describe group <groupname>

Confirms group objects exist and membership is present.