"Unable to authenticate" error when we try to access Operation Manager plugin in VMware Cloud Director (vCD)

Products

• VCF Operations/Automation (formerly VMware Aria Suite)

Issue/Introduction

The VMware Cloud Director (vCD) Tenant not accessible when trying to load the Aria Operations plugin.

"The webpage at (URL) might be temporarily down or it may have moved permanently to a new web address"

We may also get an "Unable to authenticate." error.

Environment

VMware Cloud Director:  10.5.1
VMware Aria Operations: 8.17.x

Resolution

1. Aria Ops certificate must be added in vCD for the plugin to work
   
   
2. Check if System access URL global setting is configured properly in Aria Ops. This is used by external systems (VCD in this case) on what particular endpoint of Aria Ops to be used for communication. Use the FQDN as updated in Aria Operations certificate. 

    3. Re-register the vCD adapter instance.

        a. Navigate to Data Sources > Integration > vCD Adapter instance.
        b. Edit the vCD adapter instance.
        c. Click Manage Registration, then enter credentials to unregister Aria Operations from vCD.
        d. Once unregistered, click Manage Registration again and enter credentials to re-register Aria Operations with vCD. 

Note: Whenever the System Access URL is modified, the VCD adapter instance must be re-registered to republish the plugin successfully.