RedHatのEX380試験に合格するのは早ければ速いほどIT業界で発展られたいあなたにとってはよいです。あなたはこの重要な試験を準備するのは時間とお金がかかると聞いたことがあるかもしれませんが、それは我々提供するRedHatのEX380ソフトを利用しなかったからです。複雑な整理と分析の過程はもう我々に完了されました。あなたは高効率の復習とRedHatのEX380試験の成功を経験する必要があればいいです。
| トピック | 出題範囲 |
|---|---|
| トピック 1 |
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| トピック 2 |
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| トピック 3 |
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RedHat認証に伴って、この認証の重要性を発見する人が多くなっています。最近仕事を探すのは難しいですが、EX380認証を取得して、あなたの就職チャンスを増加することができます。あなたは試験に合格したいなら、我々のEX380問題集を利用することができます。
質問 # 30
Kubeconfig Management - Approve CSR
正解：
解説：
See the solution below in Explanation:
Explanation:
Step 1: Identify the pending certificate signing request.
The lab names it audit-csr.
Step 2: Run the approval command:
oc adm certificate approve audit-csr
Step 3: Confirm approval.
The lab output shows:
certificatesigningrequest.certificates.k8s.io/audit-csr approved
Detailed explanation:
In Kubernetes and OpenShift, a CSR must be approved before the requester can use the signed certificate for authentication. This Task approves the CSR named audit-csr, which is likely associated with the audit user or service account access flow in the lab. Certificate-based authentication is commonly used for kubeconfig access because it enables secure client identity without relying solely on tokens. Until the CSR is approved, the certificate cannot be trusted by the cluster API for authenticated operations. Administrative approval is therefore a gatekeeping step that ensures only intended certificate requests become valid credentials. This Task is part of a broader kubeconfig workflow that continues with setting credentials and defining context.
質問 # 31
Configure BackupStorageLocation and VolumeSnapshotLocation
Task Information : Configure OADP/Velero storage locations and confirm they show as Available.
正解：
解説：
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.
==========
質問 # 32
Export and import container images (mirror to internal registry)
Task Information : Pull an image from an external registry, push it into the OpenShift internal registry, and update a deployment to use the mirrored image.
正解：
解説：
See the solution below in Explanation:
Explanation:
* Log in to OpenShift internal registry
* oc registry login
* Allows podman to push to the internal registry.
* Pull external image
* podman pull docker.io/library/nginx:1.25
* Gets the image locally.
* Tag for internal registry destination
* podman tag nginx:1.25 image-registry.openshift-image-registry.svc:5000/orders/nginx:1.25
* Uses the cluster service DNS name (works inside cluster network).
* Push to internal registry
* podman push image-registry.openshift-image-registry.svc:5000/orders/nginx:1.25
* Update deployment to use internal image
* oc -n orders set image deploy/web web=image-registry.openshift-image-registry.svc:5000/orders/nginx:
1.25
* Verify rollout
* oc -n orders rollout status deploy/web
* oc -n orders get pods -o wide
質問 # 33
Restore application into same namespace
Task Information : Restore from backup orders-full and validate the app resources return.
正解：
解説：
See the solution below in Explanation:
Explanation:
* Start the restore
* velero restore create orders-restore --from-backup orders-full
* Monitor restore status
* velero restore get
* velero restore describe orders-restore --details
* Validate restored resources
* oc -n orders get all
* oc -n orders get pvc
* Ensure deployments/pods/services and PVCs exist and pods become Running.
質問 # 34
Recover a NotReady worker node (basic remediation workflow)
Task Information : Diagnose a NotReady worker node and restore it to Ready state using standard OpenShift admin workflow.
正解：
解説：
See the solution below in Explanation:
Explanation:
* Identify failing node and status
* oc get nodes
* Confirms which node is NotReady.
* Inspect node conditions and events
* oc describe node < worker >
* Shows kubelet condition issues (network, disk pressure, runtime, etc.).
* Check MachineConfigPool state
* oc get mcp
* oc describe mcp worker
* If MCP is degraded, node may be stuck applying a config.
* Check node logs (kubelet)
* oc adm node-logs < worker > --path=kubelet.log
* Often reveals why node isn't reporting Ready.
* Remediate based on symptom
* Examples:
* If out of disk: free space, then verify kubelet recovers.
* If stuck MCO: investigate current/desired config and fix broken MachineConfig.
* If node cordoned/drained incorrectly: uncordon after remediation.
* oc adm uncordon < worker >
* Confirm node returns Ready
* oc get node < worker >
質問 # 35
......
EX380パススルートレントの設計に多くの変更があります。 最も印象的なバージョンは、APPオンラインバージョンです。 通常、あらゆる種類のデジタルデバイスで使用できます。 しかし、オンラインではないときにオンラインバージョンを使用できるという特別な利点もあります。ネットワーク環境で初めて使用する場合は、どこからでもJapancertのEX380学習ガイドのオンラインバージョンを使用できます。 ネットワーク接続なし。 オンライン版のEX380試験問題はあなたに適した選択肢だと思います
EX380日本語版試験勉強法: https://www.japancert.com/EX380.html