DUMPS BASE EXAM DUMPS REDHAT EX370 28% OFF Automatically For You Red Hat Certified Specialist in OpenShift Data Foundation exam Valid Red Hat EX370 Dumps (V8.02) for First-Attempt Complete 1.You are tasked with creating a project named production-environment in OpenShift using the command line. Provide the step-by-step process to create the project and verify it. Answer: Solution: 2. Create the project using the oc CLI: oc new-project production-environment 3. Verify that the project has been created: oc get projects 4. Switch to the new project context: oc project production-environment Explanation: The oc new-project command creates a new namespace in OpenShift. Verifying ensures the namespace is ready, and switching context ensures subsequent commands execute in the correct project. 5.You are required to create the same project, production-environment, using the OpenShift web console. Walk through the steps to achieve this. Answer: Solution: 6. Log in to the OpenShift web console. 7. Click on “Projects” from the left-hand navigation menu. 8. Click “Create Project” and fill in the name as production-environment. Optionally, provide a description and display name. 9. Click “Create” and verify the project is listed in the “Projects” view. Explanation: The OpenShift web console provides a graphical interface for managing resources. Using the web console allows non-technical users to perform administrative tasks easily. 10.Create a ConfigMap named application-config with the key-value pairs env=production and debug=false. Walk through the YAML definition, applying it to the cluster, and verifying the result. Answer: Solution: Valid Red Hat EX370 Dumps (V8.02) for First-Attempt Complete 11. Create a ConfigMap YAML file (application-config.yaml): apiVersion: v1 kind: ConfigMap metadata: name: application-config data: env: production debug: "false" 12. Apply the YAML file: oc apply -f application-config.yaml 13. Verify the ConfigMap creation: oc describe configmap application-config Explanation: ConfigMaps store non-sensitive configuration data for applications. By defining and applying a YAML file, the configuration is maintained in a structured and reusable format. 14.Edit an existing ConfigMap named application-config to change the value of debug to true. Provide step-by-step instructions. Answer: Solution: 15. Edit the ConfigMap using the oc CLI: oc edit configmap application-config 16. Change the value of debug to true in the opened YAML editor: data: env: production debug: "true" 17. Save and exit the editor. 18. Verify the changes: oc get configmap application-config -o yaml Explanation: Editing a ConfigMap using the oc edit command allows you to modify its values in real time. This is useful for making quick updates without reapplying YAML. 19.Create a Secret named database-credentials with the keys username=admin and password=secret12 3. Walk through the process using both the CLI and YAML. Valid Red Hat EX370 Dumps (V8.02) for First-Attempt Complete Answer: Solution: 20. Create the Secret using the CLI: oc create secret generic database-credentials \ --from-literal=username=admin \ --from-literal=password=secret123 21. Alternatively, create a YAML file (database-credentials.yaml): apiVersion: v1 kind: Secret metadata: name: database-credentials type: Opaque data: username: YWRtaW4= # Base64 encoded value of 'admin' password: c2VjcmV0MTIz # Base64 encoded value of 'secret123' 22. Apply the YAML: oc apply -f database-credentials.yaml 23. Verify the Secret: oc get secret database-credentials -o yaml Explanation: Secrets securely store sensitive data in base64-encoded format. The CLI method is quick, while the YAML approach allows for better version control and auditing. 24.Export the YAML definition of a Deployment named frontend and save it to a file. Provide the steps to achieve this. Answer: Solution: 25. Export the Deployment YAML using the CLI: oc get deployment frontend -o yaml > frontend-deployment.yaml 26. Verify the content of the saved YAML file: cat frontend-deployment.yaml Explanation: Exporting a resource’s YAML definition allows for reuse or modification. This is especially useful for versioning configurations in source control. 27.Monitor cluster events in real time to troubleshoot a pod creation issue. Walk Valid Red Hat EX370 Dumps (V8.02) for First-Attempt Complete through the steps using the CLI. Answer: Solution: 28. Watch cluster events in real time: oc get events --watch 29. Observe events related to the pod creation issue. 30. Identify error messages or warnings in the event output. Explanation: The oc get events --watch command streams real-time cluster events, helping identify issues like insufficient resources or misconfigurations causing pod failures. 31.View logs of a pod named backend-1234 to debug an application error. Provide the step-by-step commands. Answer: Solution: 32. View the logs of the pod: oc logs backend-1234 33. If the pod has multiple containers, specify the container name: oc logs backend-1234 -c <container-name> 34. Analyze the log output for errors or warnings. Explanation: The oc logs command provides application-specific logs that are crucial for debugging runtime issues. Specifying the container is necessary for multi-container pods. 35.Create a Deployment named my-app to deploy the nginx container with 3 replicas. Provide the YAML definition, steps to apply it, and verification. Answer: Solution: 36. Create the Deployment YAML (my-app-deployment.yaml): apiVersion: apps/v1 kind: Deployment metadata: name: my-app spec: replicas: 3 Valid Red Hat EX370 Dumps (V8.02) for First-Attempt Complete selector: matchLabels: app: my-app template: metadata: labels: app: my-app spec: containers: - name: nginx image: nginx:latest ports: - containerPort: 80 37. Apply the YAML: oc apply -f my-app-deployment.yaml 38. Verify the Deployment: oc get deployments Explanation: Deployments manage the lifecycle of applications by ensuring desired replica counts. YAML configurations offer flexibility in defining complex applications. 39.Use the OpenShift web console to monitor alerts generated by the cluster. Describe the steps. Answer: Solution: 40. Log in to the OpenShift web console. 41. Navigate to the "Monitoring" section in the left-hand menu. 42. Click on "Alerts" to view active alerts. 43. Analyze the details of each alert, including severity and message. Explanation: The web console provides a centralized interface for monitoring cluster health. Alerts highlight potential issues like resource constraints or application errors. 44.Create a PersistentVolumeClaim (PVC) named my-pvc with a storage request of 5Gi and access mode ReadWriteOnce. Walk through the YAML definition, applying it to the cluster, and verifying it. Answer: Valid Red Hat EX370 Dumps (V8.02) for First-Attempt Complete Solution: 45. Create a YAML file for the PVC (my-pvc.yaml): apiVersion: v1 kind: PersistentVolumeClaim metadata: name: my-pvc spec: accessModes: - ReadWriteOnce resources: requests: storage: 5Gi 46. Apply the YAML file to the cluster: oc apply -f my-pvc.yaml 47. Verify the PVC creation: oc get pvc my-pvc Explanation: PersistentVolumeClaims are used to request storage in Kubernetes. By defining storage requirements and access modes, applications can dynamically claim storage resources. 48.Scale a Deployment named web-app from 2 replicas to 5 replicas using the CLI. Provide step-by-step instructions and verify the scaling operation. Answer: Solution: 49. Scale the Deployment: oc scale deployment web-app --replicas=5 50. Verify the scaling operation: oc get deployment web-app 51. Confirm the status of pods: oc get pods -l app=web-app Explanation: Scaling Deployments adjusts the number of pod replicas to meet application demand. Verifying ensures the desired state matches the cluster's current state. 52.Expose a Deployment named my-service as a NodePort service to make it accessible outside the cluster. Provide the step-by-step process and verify the service. Answer: Solution: Valid Red Hat EX370 Dumps (V8.02) for First-Attempt Complete 53. Expose the Deployment as a NodePort service: oc expose deployment my-service --type=NodePort --port=80 54. Verify the service: oc get svc my-service 55. Access the service using the NodePort and cluster IP: curl http://<Cluster- IP>:<NodePort> Explanation: Exposing a Deployment as a NodePort service makes it accessible externally on a specific port. This is useful for testing or external connectivity requirements. 56.Troubleshoot an issue where a pod named api-backend is in Pending status. Provide steps to identify and resolve the issue. Answer: Solution: 57. Describe the pod to identify the issue: oc describe pod api-backend 58. Check node resources to ensure capacity: oc describe nodes 59. If insufficient resources, scale down other workloads or add more nodes: oc scale deployment other-app --replicas=1 Explanation: A Pending pod indicates scheduling issues, often due to resource constraints or node taints. Describing the pod and nodes helps pinpoint the root cause. 60.Monitor cluster events to track the creation of resources in the staging namespace. Provide step-by-step commands. Answer: Solution: 61. Watch events for the staging namespace: oc get events -n staging --watch 62. Observe real-time events and note any errors or warnings. Explanation: Real-time event monitoring helps track resource creation and identify issues such as quota violations or configuration errors in a specific namespace. 63.Edit a Deployment named frontend to update its container image from nginx:1.18 Valid Red Hat EX370 Dumps (V8.02) for First-Attempt Complete to nginx:1.19 and verify the changes. Answer: Solution: 64. Edit the Deployment: oc edit deployment frontend 65. Update the container image in the YAML editor: containers: - name: nginx image: nginx:1.19 66. Save and exit the editor. 67. Verify the updated image: oc describe deployment frontend Explanation: Updating the container image for a Deployment ensures applications run the desired version. Verifying the update confirms the change has been applied successfully. 68.Use the OpenShift web console to create a ConfigMap named app-settings with a key-value pair theme=dark. Provide the steps. Answer: Solution: 69. Log in to the OpenShift web console. 70. Navigate to the "ConfigMaps" section under "Workloads." 71. Click "Create ConfigMap" and fill in the name app-settings. 72. Add a key-value pair with theme as the key and dark as the value. Save the ConfigMap. Explanation: The web console simplifies ConfigMap creation with a visual interface, allowing users to add key-value pairs without writing YAML manually. 73.Import a resource definition from a YAML file named deployment.yaml into the cluster. Provide the step-by-step commands. Answer: Solution: Valid Red Hat EX370 Dumps (V8.02) for First-Attempt Complete 74. Apply the resource definition to the cluster: oc apply -f deployment.yaml 75. Verify the resource creation: oc get deployments Explanation: Importing resource definitions from YAML ensures configurations are applied consistently across environments. Verifying ensures successful deployment. 76.View and decode a Secret named tls-secret to retrieve its tls.crt and tls.key. Provide the steps. Answer: Solution: 77. View the Secret details: oc get secret tls-secret -o yaml 78. Decode the tls.crt value: echo "<base64-encoded-value>" | base64 --decode 79. Decode the tls.key value similarly. Explanation: Secrets store sensitive data in base64-encoded format. Decoding the values is necessary for tasks like verifying SSL certificates. 80.Use product documentation to derive the YAML definition for a PersistentVolume with 10Gi of storage and access mode ReadWriteMany. Provide the steps. Answer: Solution: 81. Use the CLI to retrieve schema details: oc explain persistentvolume.spec 82. Refer to the documentation for required fields and create the YAML: apiVersion: v1 kind: PersistentVolume metadata: name: my-pv spec: capacity: storage: 10Gi accessModes: - ReadWriteMany hostPath: Valid Red Hat EX370 Dumps (V8.02) for First-Attempt Complete path: /mnt/data 83. Apply the YAML file: oc apply -f my-pv.yaml Explanation: Product documentation and the oc explain command provide structured guidance for creating resource YAMLs. PersistentVolumes enable durable storage for applications. 84.Create a DeploymentConfig named custom-app to deploy an nginx container with 3 replicas, using a YAML definition. Walk through the steps to apply it and verify the deployment. Answer: Solution: 85. Create the YAML file for the DeploymentConfig (custom-app.yaml): apiVersion: apps.openshift.io/v1 kind: DeploymentConfig metadata: name: custom-app spec: replicas: 3 selector: app: custom-app template: metadata: labels: app: custom-app spec: containers: - name: nginx image: nginx:latest ports: - containerPort: 80 triggers: - type: ConfigChange 86. Apply the YAML file to the cluster: oc apply -f custom-app.yaml 87. Verify the deployment: oc get deploymentconfig custom-app Explanation: DeploymentConfigs are specific to OpenShift and support advanced lifecycle features like hooks and triggers. YAML definitions allow precise customization for deployments. Valid Red Hat EX370 Dumps (V8.02) for First-Attempt Complete 88.Configure a resource quota in a project to limit CPU usage to 4 cores and memory to 8Gi. Provide the YAML definition and steps to apply it. Answer: Solution: 89. Create a ResourceQuota YAML file (resource-quota.yaml): apiVersion: v1 kind: ResourceQuota metadata: name: compute-resources spec: hard: requests.cpu: "4" requests.memory: 8Gi limits.cpu: "4" limits.memory: 8Gi 90. Apply the ResourceQuota to the project: oc apply -f resource-quota.yaml -n <project-name> 91. Verify the ResourceQuota: oc get resourcequota compute-resources -n <project-name> Explanation: ResourceQuotas enforce resource usage limits in a namespace, ensuring no single workload consumes excessive resources. This is critical for multi-tenant environments. 92.Create a HorizontalPodAutoscaler (HPA) for a Deployment named api-server to scale between 2 and 10 replicas based on CPU usage. Provide the YAML and steps to verify. Answer: Solution: 93. Create the HPA YAML file (hpa.yaml): apiVersion: autoscaling/v2 kind: HorizontalPodAutoscaler metadata: name: api-server-hpa spec: scaleTargetRef: apiVersion: apps/v1 Valid Red Hat EX370 Dumps (V8.02) for First-Attempt Complete kind: Deployment name: api-server minReplicas: 2 maxReplicas: 10 metrics: - type: Resource resource: name: cpu target: type: Utilization averageUtilization: 70 94. Apply the YAML file: oc apply -f hpa.yaml 95. Verify the HPA: oc get hpa Explanation: HPAs dynamically adjust replica counts based on resource usage, ensuring scalability. The target CPU utilization is set as a percentage for autoscaling triggers. 96.Import a custom image from Docker Hub named my-app:1.0 into an OpenShift ImageStream named my-app. Provide the steps. Answer: Solution: 97. Import the image into an ImageStream: oc import-image my-app:1.0 --from=docker.io/library/my-app:1.0 --confirm 98. Verify the ImageStream creation: oc get is my-app Explanation: ImageStreams allow OpenShift to manage container images independently of external registries. Importing ensures image consistency within the cluster. 99.Configure a pod named custom-pod to use a Secret named db-credentials for environment variables. Provide the YAML and steps to apply it. Answer: Solution: 100. Create the pod YAML file (custom-pod.yaml): apiVersion: v1 kind: Pod Valid Red Hat EX370 Dumps (V8.02) for First-Attempt Complete metadata: name: custom-pod spec: containers: - name: app image: nginx:latest env: - name: DB_USER valueFrom: secretKeyRef: name: db-credentials key: username - name: DB_PASS valueFrom: secretKeyRef: name: db-credentials key: password 101. Apply the YAML file: oc apply -f custom-pod.yaml 102. Verify the pod: oc get pod custom-pod Explanation: Secrets provide secure access to sensitive data, such as credentials. Using valueFrom in the pod specification maps Secret values to environment variables. 103.Create a role named view-logs to allow viewing logs of all pods in a namespace. Provide the YAML and steps to bind it to a user. Answer: Solution: 104. Create the role YAML (view-logs.yaml): apiVersion: rbac.authorization.k8s.io/v1 kind: Role metadata: name: view-logs rules: - apiGroups: [""] resources: ["pods/log"] verbs: ["get", "list"] 105. Apply the role: oc apply -f view-logs.yaml -n <namespace> 106. Bind the role to a user: oc create rolebinding view-logs-binding --role=view-logs --user=<username> -n Valid Red Hat EX370 Dumps (V8.02) for First-Attempt Complete <namespace> Explanation: RBAC roles define permissions for resources, while role bindings associate roles with users or groups. This ensures fine-grained access control. 107.Configure a ServiceAccount named my-app-sa for a Deployment named my-app. Provide the YAML and steps to apply it. Answer: Solution: 108. Create the ServiceAccount YAML (my-app-sa.yaml): apiVersion: v1 kind: ServiceAccount metadata: name: my-app-sa 109. Apply the ServiceAccount: oc apply -f my-app-sa.yaml 110. Modify the Deployment to use the ServiceAccount: spec: template: spec: serviceAccountName: my-app-sa 111. Apply the updated Deployment YAML and verify: oc apply -f my-app-deployment.yaml oc describe deployment my-app Explanation: ServiceAccounts allow pods to interact with the API securely. Associating a ServiceAccount with a Deployment enables scoped permissions for workloads. 112.Use the OpenShift web console to view cluster logs for a specific node. Provide the steps. Answer: Solution: 113. Log in to the OpenShift web console. 114. Navigate to "Compute" > "Nodes" from the left-hand menu. Valid Red Hat EX370 Dumps (V8.02) for First-Attempt Complete 115. Select the specific node and click on "Logs." 116. Analyze the logs for warnings or errors. Explanation: Viewing node logs in the web console simplifies monitoring and debugging. This is useful for troubleshooting cluster-level issues. 117.Implement a pod disruption budget for a Deployment named frontend to ensure at least 2 pods are always available during updates. Provide the YAML. Answer: Solution: 118. Create the PodDisruptionBudget YAML (pdb.yaml): apiVersion: policy/v1 kind: PodDisruptionBudget metadata: name: frontend-pdb spec: minAvailable: 2 selector: matchLabels: app: frontend 119. Apply the YAML file: oc apply -f pdb.yaml Explanation: PodDisruptionBudgets minimize downtime during voluntary disruptions like updates. This ensures application availability. 120.Derive the YAML for a ConfigMap using oc explain. Provide the steps. Answer: Solution: 121. Use the oc explain command: oc explain configmap --recursive 122. Analyze the output to construct a YAML definition. Explanation: The oc explain command provides a detailed schema for Kubernetes resources, enabling users to create accurate YAML definitions based on resource fields. Valid Red Hat EX370 Dumps (V8.02) for First-Attempt Complete 123.You need to back up all resources from a project named staging and save them to a file for restoration later. Provide the commands to achieve this. Answer: Solution: 124. Export all resources from the staging project: oc get all -n staging -o yaml > staging-backup.yaml 125. Verify the content of the backup file: cat staging-backup.yaml Explanation: Exporting resources to a YAML file provides a backup that can be restored later. This approach is essential for disaster recovery or migrating resources between environments. 126.Restore resources from a backup file named staging-backup.yaml to a new project named restored-staging. Provide the steps. Answer: Solution: 127. Create the new project: oc new-project restored-staging 128. Apply the backup file to the new project: oc apply -f staging-backup.yaml -n restored-staging 129. Verify the resources in the new project: oc get all -n restored-staging Explanation: Restoring resources involves applying the backup YAML to the cluster. Creating a separate project ensures the restored resources don’t interfere with existing ones. 130.Use a LimitRange to set default resource limits for pods in a project. Provide the YAML definition and steps to apply it. Answer: Solution: 131. Create a LimitRange YAML file (limit-range.yaml): apiVersion: v1 kind: LimitRange metadata: name: resource-limits Valid Red Hat EX370 Dumps (V8.02) for First-Attempt Complete spec: limits: - default: cpu: "500m" memory: "256Mi" defaultRequest: cpu: "250m" memory: "128Mi" type: Container 132. Apply the YAML file to the project: oc apply -f limit-range.yaml -n <project-name> 133. Verify the LimitRange: oc get limitrange -n <project-name> Explanation: LimitRanges define default resource limits for containers in a namespace, ensuring workloads consume resources efficiently without over-provisioning. 134.Troubleshoot a pod named web-app stuck in ImagePullBackOff status. Provide the steps to resolve the issue. Answer: Solution: 135. Describe the pod to gather details about the issue: oc describe pod web-app GET FULL VERSION OF EX370 DUMPS Powered by TCPDF (www.tcpdf.org)