"Retrieving available bundles failed" after upgrade SDDC Manager to 5.2.1

Products

• VMware SDDC Manager

Issue/Introduction

• The below messages are seen under Bundles tab of Bundle Management:
  
  Retrieving available bundles failed. Unable to retrieve aggregated domains upgrade status: Encountered fetching http://127.0.0.1/Icm/inventory/upgrades api - File with Compatibility Matrix Content for Compatibility controller VMWARE_COMPAT is not found.
Retrieving all applicable bundles failed. Encountered fetching http://127.0.0.1/Icm/inventory/upgrades api - File with Compatibility Matrix Content for Compatibility controller VMWARE_COMPAT is not found
  
  
• Apply the workaround in the KB "Retrieving available bundles failed. Unable to retrieve aggregated domains upgrade status: Encountered fetching http://127.0.0.1/lcm/inventory/upgrades api - File with Compatibility Matrix Content for Compatibility controller VMWARE_COMPAT is not found." to disable upgrade compatibility checks
  • In the TASK there is error messages prompted:
    
    An error occurred when validating VMware Cloud Foundation compatibility: File with Compatibility Matrix Content for Compatibility controller VMWARE_COMPAT is not found.
    
    
  • In the Bundle tab of Bundle Management there are below error messages:
    
    Getting Upgradable API call failed. File with Compatibility Matrix Content for Compatibility controller VMWARE_COMPAT is not found.
Retrieving all available VCF versions failed. File with Compatibility Matrix Content for Compatibility controller VMWARE_COMPAT is not found.
VMware Cloud Foundation compatibility data is missing. To download and update the compatibility data, see the documentation.
Retrieving update patches bundles failed. Unable to retrieve aggregated LCM bundles: Error in getDomainBomVersion(): Encountered error requesting http://127.0.0.1/v1/system/upgradables api: File with Compatibility Matrix Content for Compatibility controller VMWARE_COMPAT is not found.

Environment

VMware SDDC Manager 5.2.1

Cause

SDDC Manager is unable to download the VMwareCompatibilityData.json file due to network blocked. In the SDDC Manager /var/log/vmware/vcf/lcm/lcm.log the below messages indicate SDDC Manager can not connect to the VCF public URL to download the file:

ERROR [vcf_lcm,67cfa0d09eeed086b1dc4dade42f649f,2eed] [c.v.e.s.l.c.s.VmwareCompatibilityDataDownloadScheduler,vac-scheduler-1] VVS Compatibility Data update failed
com.vmware.vcf.compatibility.controllers.internal.vvs.exception.VvsException: The VVS api call to https://vvs.esp.vmware.com/v1/products/bundles/type/vcf-lcm-v2-bundle?format=json failed. Response: Network is unreachable

Resolution

Change firewall to release the access blocking from SDDC Manager to the VCF public URL.
More information about the public URL in the KB Public URL list for SDDC Manager