Backups are not listed in NSX-T manager

Products

• VMware NSX

Issue/Introduction

• Following error reported in NSX-UI
  "You have not configured backups of NSX Manager. Go to Backup Settings to configure NSX Manager backups."
• Backup status report 'success', however the previous backup details are not available in the UI.
• Backup server logs report the following error:
  "Unable to negotiate with <NSX manager IP> port 60268: no matching MAC found."
• You can verify the available HMACs using command:
  # ssh -Q mac 
• You are using NSX-T 3.x version

Environment

VMware NSX-T datacenter 

Cause

Backup process supports hmac-sha2-256 and hmac-sha2-512. However the Backup list process has limitation and it supports only hmac-sha2-256.

If the required HMAC is not enabled in the system, the respective process will fail.

Resolution

This issue is resolved in version VMware NSX 4.0 onwards.

Additional Information

You can use the following command to check the connectivity between NSX manager and backup server:

ssh -m <hmac-type> <backup server/NSX manager>

example : ssh -m hmac-sha2-256 1.1.1.10