Creating a new Workload domain on SDDC manager fails when trying to validate Backup Location Details

Products

• VMware SDDC Manager

Issue/Introduction

• Workflow fails with with error:
  
  Error: Invalid parameter: Server host key validation failed for <backup_server_ip>. Ensure that the server is configured to support either the ssh-rsa or ecdsa host key algorithms. 
  
  

Environment

VMware SDDC Manager 5.x
VMware SDDC Manager 4.x

Resolution

To address the issue check the validity of the backup server SSH keys residing in the SDDC manager known hosts files and update them following the steps from KB article 316028