VxRail manager failing pre-checks and upgrade through SDDC manager with: "The update succeeded with error"

Products

• VMware SDDC Manager

Issue/Introduction

When attempting to run pre-check or upgrade of VxRail Manager through SDDC manager, the /var/log/vmware/vcf/lcm/lcm-debug.log on SDDC Manager display the following: 

Mar 19, 2025 3:04:06 AM : abcd1234-1234-1234-1234-abcd1234 : Upgrading Update hosts certificate in VxRail Manager 99 percent,
Mar 19, 2025 3:05:19 AM : abcd1234-1234-1234-1234-abcd1234 : VxRail component upgrade - got successful completion message from VxRail Manager Upgrade is completed VxRail-8.0.322-Composite-Upgrade-Slim-Package-for-8.0.x.zip upgrade completed successfully 100 percent,
Mar 19, 2025 3:05:20 AM : abcd1234-1234-1234-1234-abcd1234 : Enabled DRS rules on the cluster for vxmanager abcd1234-1234-1234-1234-abcd1234,
Mar 19, 2025 3:05:20 AM : abcd1234-1234-1234-1234-abcd1234 : Upgrade element resourceType: VXRAIL resourceId: abcd1234-1234-1234-1234-abcd1234 recorded stage VXRAIL_UPGRADE_DELETE_BUNDLE,
Mar 19, 2025 3:05:26 AM : abcd1234-1234-1234-1234-abcd1234 : VxRail component upgrade failed with error reject HostKey: <VxRail FQDN>. ,
Mar 19, 2025 3:05:26 AM : abcd1234-1234-1234-1234-abcd1234 : Upgrade element resourceType: VXRAIL resourceId: abcd1234-1234-1234-1234-abcd1234 status changed to COMPLETED_WITH_FAILURE,
Mar 19, 2025 3:05:41 AM : abcd1234-1234-1234-1234-abcd1234 : COMPLETED_WITH_FAILURE

Resolution

Run the 'fixhostkeys.py' script to update the hostkeys on SDDC manager. SSH to the SDDC Manager appliance and run the following command:
python fixHostKeys.py --node <FQDN of VxRail Manager>

See: How to update the SSH host keys on the SDDC Manager