SDDC Manager upgrade pre-check for 9.1.0.0100 failed during pre-check "Disk info for SDDC Manager virtual machine services folder XYZ could not be retrieved"

Products

• VMware SDDC Manager / VCF Installer

Issue/Introduction

In VCF Ops the Upgrade readiness precheck is failing with the errors "Disk info for SDDC Manager virtual machine services folder XYZ could not be retrieved", e.g. for "/var/log/vmware"

Environment

VMware Cloud Foundation 9.x

Cause

There is a mismatch between the SDDC Manager FQDN and VMware Tools guest reported FQDN / hostname.

Resolution

Please check the DNS Name in Virtual Machine Details for SDDC Manager VM in vCenter. 

If the shown name is a shortname and the SDDC Manager expects the FQDN please resolve the issue by 

- Taking a snapshot of the SDDC Manager

- SSH into SDDC Manager and run

# hostnamectl set-hostname FQDN

# vmware-toolbox-cmd info update network

Afterwards please run

# hostname

to verify the changed hostname.

Then please re-run the upgrade precheck from SDDC Manager UI / VCF Ops.