SDDC Workload Domain Deployment: Subtask 'Validate Backup Location Details' Fails with message: Invalid Parameter

Products

• VMware SDDC Manager / VCF Installer

Issue/Introduction

During the deployment of additional workload domains the Validate Backup Location subtask fails with Message: Invalid parameter: Validation failed for directory path.

The domain manager log will have an error stating: "Make sure the backup directory is intact and sftp server has write permissions on backup path." 

Attempt a connection and manually perform the test from the CLI as root:

sftp -vvv [email protected]
pwd 
ls -la
cd <path-to-test>
pwd
mkdir vcf-test
ls -la
rmdir vcf_test

Environment

SDDC 5.x

Cause

A failure to connect would indicate a problem with your ssh keys in the known_hosts files. SDDC Manager validation is failing because it does not trust the SSH host key being presented by the sftp server. 

A failure in executing commands after the connection would indicate an sftp server-side issue.

Resolution

For a failure to connect you will need to validate your ssh keys configured in the known_hosts files on the SDDC Manager - See Creating a new Workload domain on SDDC manager fails when trying to validate Backup Location Details 

For any other failure after the sftp connection has been established you will need to remediate the sftp server side configuration issues.