The option within the What-If Analysis feature that should be used to obtain the information is Workload Planning: Traditional. This option allows the administrator to define scenarios that can potentially add or remove workloads to or from actual data centers or custom data centers.vRealize Operations models the scenario and calculates whether the desired workload can fit in the targeted data center or custom data center, and how it affects the capacity and performance of the cluster1.The administrator can also specify the profile of the workload, the start and end date of the scenario, and the annual projected growth of the workload2.

The other options are not correct, because they do not match the use case of adding virtual machines to a non-hyperconverged cluster.Cluster Planning: Traditional allows the administrator to define scenarios that can potentially add or remove hosts to or from clusters, and evaluate the impact on the cluster capacity and performance3. Virtual Machine Planning: Traditional allows the administrator to define scenarios that can potentially add or remove virtual machines to or from hosts, and evaluate the impact on the host capacity and performance. Infrastructure Planning: Traditional allows the administrator to define scenarios that can potentially add or remove infrastructure components, such as datastores, networks, or adapters, and evaluate the impact on the infrastructure capacity and performance.

References:

What-If Analysis - Workload Planning: Traditional - VMware Docs

What-If Analysis with vRealize Operations 8.0 - VMware Blogs

What-If Analysis - Cluster Planning: Traditional - VMware Docs

[What-If Analysis - Virtual Machine Planning: Traditional - VMware Docs]

[What-If Analysis - Infrastructure Planning: Traditional - VMware Docs]

A vRealize Operations support bundle is a collection of log and configuration files that help troubleshoot a vRealize Operations issue.You can create a support bundle from the vRealize Operations UI or from the command line interface (CLI) of the vRealize Operations nodes12.

If the vRealize Operations UI is inaccessible, you cannot create a support bundle from the UI. Therefore, option C is not a valid process.You need to use the CLI method to create a support bundle from an on-premises deployment3.

To create a support bundle from the CLI, you need to log in to the vRealize Operations nodes using SSH and run the generateSupportBundle.py script. This script collects the log and configuration files from the nodes and creates a support bundle in ZIP format. You can then download the support bundle from the /storage/vcops/support directory of the nodes .

However, you do not need to log in to each vRealize Operations node and run the script separately. You only need to log in to the Primary node and run the script once. The script will automatically collect the files from all the nodes in the cluster and create a single support bundle. Therefore, option A is not a necessary process. You only need to log in to the Primary node and run the script .

Option B is not a correct process, as it does not use the generateSupportBundle.py script. The /var/log/messages file is not sufficient to gather the correct information for troubleshooting a vRealize Operations issue. You need to use the script to collect all the relevant log and configuration files from the nodes .

Therefore, the process that will gather the correct information successfully is to log in to the vRealize Operations Primary node using SSH, and then run the generateSupportBundle.py script. This is option D.

References:

1:vRealize Operations Support Bundles - VMware Docs2:Create a vRealize Operations Support Bundle - VMware Docs3:Create a Support Bundle from the Command Line Interface - VMware Docs:Create a Support Bundle from the Command Line Interface - VMware Docs:Create a Support Bundle from the Command Line Interface - VMware Docs:Create a Support Bundle from the Command Line Interface - VMware Docs: [vRealize Operations Manager User Guide] : [vRealize Operations Manager Installation and Configuration Guide] : [vRealize Operations Manager Concepts Guide] : [vRealize Operations Manager Administration Guide] : [vRealize Operations Manager Customization and Extensibility Guide] : [vRealize Operations Manager Troubleshooting Guide] : [vRealize Operations Manager API Programming Guide] : [vRealize Operations Manager Certification Exam Guide]

To discover custom application services running on virtual machines, the administrator needs to install the vRealize Operations Service Discovery Management Pack1.This management pack enables service and application discovery using the Service Discovery adapter, which leverages the Telegraf agent to collect data from the end point VMs2.The administrator can configure the Service Discovery adapter to discover predefined and custom applications and services, and view their relationships and metrics in vRealize Operations3. The administrator can also create custom application definitions based on object names, tags, or properties, and import them as XML files.Configuring a white list is not a valid option, as it is used to filter out unwanted services from discovery.References:1: vRealize Operations Service Discovery Management Pack - VMware Docs(https://docs.vmware.com/en/vRealize-Operations/8.6/com.vmware.vcom.core.doc/GUID-B9095E9B-7F10-4B2F-95A9-3D54CF5038FF.html)2: Service and Application Discovery - VMware Docs(https://docs.vmware.com/en/vRealize-Operations/8.10/com.vmware.vcom.core.doc/GUID-CC683117-D936-432C-B30B-CCCA08E863FB.html)3: Configure Service and Application Discovery - VMware Docs(https://developer.vmware.com/apis/579/vra-advanced-designer/) : Create Application Definition - VMware Docs : Configure White List - VMware Docs

Making sure the NFS server allows read-write access to the shared location by the root system account on each cell is the correct way to enable the collection of log bundles from all cells at once.This is because VMware Cloud Director uses the vmware-vcd-support script to collect host log information as well as Cloud Director logs, and this script requires the NFS server to have read-write access to the shared location by the root system account on each cell1. Installing vRealize Log Insight agent on each cell to redirect logs to a centralized location is not a valid option, as vRealize Log Insight is a separate product that does not integrate with VMware Cloud Director. Configuring a syslog server on each of the cells, and requesting the logs from the syslog server is not a feasible option, as it would require manual intervention and coordination to collect the logs from multiple sources. Mapping the log location on the primary cell to a shared folder on each of the other cells in the server group, ensuring they all have read/write rights on the primary is not a sufficient option, as it does not address the NFS server configuration that is required for the vmware-vcd-support script to work properly.References:Collecting diagnostic information for VMware Cloud Director (1026312).Preparing the Transfer Server Storage for VMware Cloud Director on Linux.

According to the VMware vRealize Operations Install and Configure Guide1, when upgrading the vRealize Operations cluster via the Administration UI, the cluster status should change from offline to online after the upgrade process is completed. However, if the cluster status remains offline or fails during the upgrade, the administrator can use the Finish Installation option to resume the upgrade process. The Finish Installation option attempts to bring the cluster online and complete the upgrade. The administrator can monitor the progress of the upgrade from the Administration UI or the Cluster Management page.

The other options are not suitable for managing this problem and continuing the installation process. The Rollback Installation option is used to revert the cluster to the previous version of vRealize Operations, not to resume the upgrade process. The Rollback Installation option is only available if the cluster is online and the upgrade has failed. The administrator should not manually take the cluster offline, as this would interrupt the upgrade process and cause data loss or corruption.References:

1: VMware vRealize Operations Install and Configure Guide, https://docs.vmware.com/en/vRealize-Operations/8.5/vrealize-operations-manager-85-installation-and-configuration-guide.pdf, page 54-55, 58-59