How to Resolve "VMware Aria Operations is not present!" Error and Integrate Aria Operations Plugin with vCenter

Products

• VMware Aria Suite

Issue/Introduction

• The VMware Aria Operations plugin configuration was not working in vCenter. Multiple attempts to unregister and register the plugin were unsuccessful, and the plugin displayed the following error message:
  
  • VMware Aria Operations is not present!

• Additionally, the following error was observed in the vCenter "Recent Tasks" section:
  
  • Error downloading plug-in. Make sure that the URL is reachable and the registered thumbprint is correct. <Aria-Operations-Node-Name>: Name or service not known

Environment

• Aria Operations 8.16.1
• Aria Operations 8.x

Cause

• The error was caused by a missing DNS resolution for the Aria Operations node name. The vCenter server could not resolve the hostname/Nodename, leading to the plugin configuration failure.

Resolution

To resolve the issue, follow these steps:

Step 1: Verify Node Name in Aria Operations:

• Log in to the Aria Operations Admin UI (https://AriaOpsIPorFQDN/admin).
• Confirm the node name (as shown in the screenshot below).

Step 2: Check DNS Resolution from vCenter:

• SSH into the vCenter server.
• Attempt to ping and nslookup the Aria Operations node name (e.g. ping Aria-Ops-Nodename and nslookup Aria-Ops-Nodename).
• The below error will be seen when using the ping command.

• If the node name cannot be resolved, proceed to the next step.

Step 3: Add Host Mapping in vCenter:

• Edit the /etc/hosts file on the vCenter server.
• Add an entry for the Aria Operations node in the following format:
  • <Aria-Ops_IP_Address> <FQDN> <Shortname/Nodename>  
  • Example: <Aria_Ops_IP> abc.example.com abc  
• Save the file and exit.

Step 4: Unregister and Re-register the Aria Operations Plugin:

• Unregister the Aria Operations plugin using How to Integrate Aria operation plugin with vCenter using Aria operations UI.
• Re-register the plugin using the correct credentials.

Step 5: Verify Plugin Configuration:

• After re-registration, check the Recent Tasks section in vCenter to ensure there are no errors.
• Confirm that the Aria Operations plugin is now successfully configured.

Additional Information

• Ensure that the Aria Operations node is reachable from vCenter over the network.
• If DNS is properly configured in your environment, ensure that the Aria Operations node name is resolvable via DNS instead of manually editing the /etc/hosts file.
• For detailed steps on integrating the Aria Operations plugin with vCenter, refer to the official Broadcom Knowledge Base article:
  
  • How to Integrate Aria Operation Plugin with vCenter
• By following these steps, the Aria Operations plugin should integrate successfully with vCenter, resolving the "VMware Aria Operations is not present!" error.