"No NSX Manager available" error with NSX Data Center for vSphere 6.4.6

Products

• VMware NSX Data Center for vSphere

Issue/Introduction

• NSX Data Center for vSphere 6.4.6 is used.
• The User Interface (UI) including the Firewall and Logical Switches panel displays an error similar to:
  
  No NSX Manager available. Verify current user has role assigned on NSX Manager.
   
• REST API calls to NSX Manager are working, some APIs may take more time to load.
• NSX Manager high CPU usage.
• In the /usr/nsx-webserver/logs/localhost_access_log file, you see entries similar to:
  
  127.0.0.1 - - [27/Oct/2019:08:38:22 +0100] "GET /api/4.0/firewall/globalroot-0/config HTTP/1.1" 200 1514314 91262
  127.0.0.1 - - [27/Oct/2019:08:43:21 +0100] "GET /api/4.0/firewall/globalroot-0/config HTTP/1.1" 200 1514314 90832
   
  127.0.0.1 - - [27/Oct/2019:11:07:39 +0100] "POST /remote/api/VdnInventoryFacade HTTP/1.1" 200 62817 264142
  127.0.0.1 - - [27/Oct/2019:11:07:40 +0100] "POST /remote/api/VdnInventoryFacade HTTP/1.1" 200 62817 265023
  127.0.0.1 - - [27/Oct/2019:11:07:40 +0100] "POST /remote/api/VdnInventoryFacade HTTP/1.1" 200 62817 265265
  
  Note: The preceding log excerpts are only examples. Date, time, and environmental variables may vary depending on your environment.

Environment

VMware NSX Data Center for vSphere 6.4.x

Cause

This issue occurs due a software defect that involves existing logging jar files that are no longer being used.
After reboot, the system is randomly picking one of the old logging jar files and when this happens.

Resolution

This is a known issue affecting VMware NSX Data Center 6.4.6.

This issue is resolved in VMware NSX Data Center for vSphere 6.4.8, available at NSX Data Center for vSphere Downloads.

Workaround:
To work around this issue, contact Broadcom Support and file a Support Request (refer to KB article "Creating and managing Broadcom support cases"

https://knowledge.broadcom.com/external/article/142884/creating-and-managing-broadcom-support-c.html ).