Pre-check fails with NSX audit not connected transport nodes while upgrading NSX from SDDC

Products

• VMware NSX
• VMware SDDC Manager / VCF Installer
• VMware Cloud Foundation

Issue/Introduction

• The pre-check fails with the "NSX audit not connected transport nodes." error.
• A similar issue is observed with the transport nodes on the NSX ui "Transport node MPA Connectivity" or "install failed"

• Upon checking the NSX Manager, we observe that the status of the specified transport nodes is listed as degraded

Environment

• VMware Cloud Foundation 4.5.2
• VMware Cloud Foundation 5.1.1
• VMware Cloud Foundation 9.X

Cause

• The "NSX audit not connected transport nodes" error occurs when transport nodes have connectivity issues and are in a degraded state.

• VLCM images is not compatible causing a failed install of NSX

Resolution

• Address any Transport Node connectivity issues
  • Troubleshooting NSX Installation Operations
  • Control Channel To Manager Node Down Too Long
• Confirm the Compute Manager connection is in an UP state
  • NSX Compute Manager 'Connection Status' Down
  • Compute Manager Connection Status Down with Invalid Credentials or Extensions Not Valid Error
• Confirm that the cluster Images in Vcenter is Complaint with the ESXI host
  • once the images is complaint go back to NSX and remediate the error to attempt the install of NSX on the host
• Restart the SDDC Manager and/or vCenter appliance
• Re-run the SDDC Manager upgrade pre-checks

*If after rebooting the SDDC and Compute Manager, the pre-check still fails, perform a rolling reboot of the nsx managers leaving the manager that is responsible for the VIP for last. 

Additional Information

Related infomration:

•  While upgrading NSX from SDDC Manager, pre-check fails with "NSX audit not connected compute managers"