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| Section | Weight | Objectives |
|---|---|---|
| Manage storage for applications | 10% | - Manage storage classes - Configure persistent storage - Create and use persistent volume claims |
| Monitor and troubleshoot cluster | 15% | - Analyze logs and events - Troubleshoot common issues - Monitor cluster health and metrics |
| Configure authentication and authorization | 15% | - Create and manage service accounts - Configure RBAC (Role-Based Access Control) - Manage users and groups - Integrate with external identity providers |
| Manage OpenShift Container Platform through CLI and Web UI | 15% | - Install and configure OpenShift cluster using CLI tools - Navigate and operate through the web console - Use oc and kubectl commands for cluster management |
| Implement CI/CD pipelines | 10% | - Configure OpenShift pipelines ( Tekton ) - Integrate with external CI/CD tools - Automate application deployments |
| Deploy and manage applications | 20% | - Implement multi-container pods - Configure application scaling and replication - Create and manage deployments - Use ConfigMaps and Secrets |
| Implement and manage networking | 15% | - Troubleshoot network connectivity issues - Manage network policies - Configure Ingress and Egress policies |
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問題 #18
Maintain group synchronization on a schedule (CronJob)
Task Information : Create a CronJob that runs LDAP group sync on a schedule using a service account that has the required permissions.
答案：
解題說明：
See the solution below in Explanation:
Explanation:
* Create a namespace for the sync job
* oc new-project id-sync
* Keeps the automation components organized.
* Create a service account for the sync job
* oc -n id-sync create sa group-sync
* CronJob runs under this SA identity.
* Grant cluster permissions to manage groups
* oc adm policy add-cluster-role-to-user cluster-admin system:serviceaccount:id-sync:group-sync
* In real environments you should scope down, but lab Task SIMULATIONs often accept cluster- admin for speed.
* Create a ConfigMap for groupsync.yaml and Secret(s) for bind password/CA
* Mount them into the job container.
* Create CronJob to run group sync
* Command inside job:
* oc adm groups sync --sync-config=/config/groupsync.yaml --confirm
* The CronJob ensures periodic reconciliation with LDAP.
* Verify job runs
* oc -n id-sync get cronjob
* oc -n id-sync get jobs
* oc -n id-sync logs job/ < job-name >
問題 #19
Kubeconfig Management - Set Credentials in Kubeconfig
答案：
解題說明：
See the solution below in Explanation:
Explanation:
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.
問題 #20
Configure BackupStorageLocation and VolumeSnapshotLocation
Task Information : Configure OADP/Velero storage locations and confirm they show as Available.
答案：
解題說明：
See the solution below in Explanation:
Explanation:
* Create a secret for cloud credentials (S3-compatible example)
* oc -n openshift-adp create secret generic cloud-credentials \
* --from-file=cloud=/path/to/credentials
* Velero uses this secret to authenticate to object storage.
* Create/Update the DataProtectionApplication (DPA)
* Apply a DPA CR that defines:
* backupLocations (bucket, endpoint URL, region, etc.)
* snapshotLocations (if using snapshots)
* Verify BackupStorageLocation and SnapshotLocation
* velero backup-location get
* velero snapshot-location get
* Status should be Available, meaning storage config is valid.
==========
問題 #21
Service Accounts and RBAC - Grant Cluster Reader Role
答案：
解題說明：
See the solution below in Explanation:
Explanation:
Step 1: Confirm the service account exists in auth-audit.
It must exist before a role can be assigned to it.
Step 2: Run the command:
oc adm policy add-cluster-role-to-user cluster-reader system:serviceaccount:auth-audit:audit Step 3: Verify the binding is added.
The lab output shows:
clusterrole.rbac.authorization.k8s.io/cluster-reader added: "system:serviceaccount:auth-audit:audit" Detailed explanation:
This binds the cluster-reader cluster role to the audit service account. The full subject format system:
serviceaccount:namespace:name is required because OpenShift RBAC needs the exact service account identity. The cluster-reader role is broader than a project-scoped view role because it allows read-level access across cluster resources. This is appropriate for auditing or inspection use cases where the account must observe but not modify. The distinction between cluster roles and namespaced roles is important: cluster roles apply to non-namespaced resources and broad cluster visibility, while local roles are limited to individual projects. This Task is a classic RBAC operation that combines identity creation with controlled privilege assignment.
問題 #22
Configure RBAC roles with users and groups
Task Information : Grant edit to group dev-team in namespace payments, and grant view to user auditor1.
答案：
解題說明：
See the solution below in Explanation:
Explanation:
* Create (or switch to) the project
* oc new-project payments
* Namespace must exist before applying rolebindings.
* Grant edit to the group
* oc -n payments policy add-role-to-group edit dev-team
* Members of dev-team can modify most resources in payments.
* Grant view to a user
* oc -n payments policy add-role-to-user view auditor1
* auditor1 can read resources but not change them.
* Verify rolebindings
* oc -n payments get rolebinding
問題 #23
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IT行業中很多雄心勃勃的專業人士為了在IT行業中能更上一層樓，離IT頂峰更近一步，都會選擇RedHat EX380這個難度較高的認證考試來獲取通認證證書從而獲得行業認可。RedHat EX380 的難度比較高所以通過率也比較低。但是報名參加RedHat EX380 認證考試是個明智的選擇，因為在如今競爭激烈的IT行業應該要不斷的提升自己。但是您可以選擇很多方式幫你通過考試。
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