SDDC Manager precheck fails on VxRail Manager Pre-Check for Password validity failed with ERROR: Found 2.0 powered-on VMs with FQDN <VxRail FQDN>, should be 1

Products

• VMware Cloud Foundation

Issue/Introduction

VxRail Pre-Check ERROR

VxRail Manager Password Validity

Description   Check for password validity of all the credentials utilized during VxRail Manager upgrade.
Start Time   MMM DD, YYYY, HH:MM:SS PM
End Time   MMM DD, YYYY, HH:MM:SS PM
Health Status    Red
Error Description   <VxRail FQDN> : Found 2.0 powered-on VMs with FQDN <VxRail FQND>, should be 1., <VxRail FQND>: Found 2.0 powered-on VMs with FQDN <VxRail FQND>, should be 1.
 Impact   High: Password validation execution for the password is failed. In case there is a credential which is not valid, upgrade will fail.
 Remediation   Password validation execution has failed. Please verify the lcm logs for specific credential and reason for execution failure.

Also, VxRail manager's accounts shows disconnected in Password Management in SDDC Manager:

Cause

In VCF 4.5, SDDC Manager fetches the list of VMs integrated to SDDC (VMs/Components which Password management manages) whose DNS name prefixes FQDN, while fetching it returns the VMs with empty or blank DNS as well causing this issue.

Resolution

This issue is fixed in VCF 4.5.1.

Workaround:
Quick workaround to fix this issue is to set FQDN on VxRail Manager VM. Command below:

hostnamectl set-hostname <FQDN of VxRail Manager VM>

Post setting hostname to its FQDN, in vCenter MOB, hostname for VxRail Manager VM updates to its FQDN, which helps SDDC Manager operationsmanager service to read VxRail Manager with its FQDN correctly.
Once hostname is updated, Re-run Pre-check on failed VxRail Manager, ERROR in Pre-check and Disconnected account for respective VxRail Manager VM issues should resolve automatically

Additional Information

Impact/Risks:

• In NSX-V2T Scenario, VxRail upgrade is blocked.
• In NSX-T2T Scenario, NSX-T2T upgrade is blocked.