Error: "Retrieving task counts failed. Http failure response for..." when browsing Fleet Management tasks

Products

• VCF Operations/Automation (formerly VMware Aria Suite)

Issue/Introduction

• When browsing Fleet Management tasks the page keeps loading and the 2 errors below are shown:
  
  Retrieving task counts failed. Http failure response for https://vcf.example.com/vcf-operations/plug/sddc-108/plugin/api/v1/tasks?taskStatus=FAILED&pageSize=1: 504 504
  
  AND
  
  Retrieving tasks list failed. Http failure response for https://vcf.example.com/vcf-operations/plug/sddc-108/plugin/api/v1/tasks?pageNumber=1&pageSize=20&orderDirection=desc&orderBy=creationTimestamp: 504 504

• VMware Cloud Foundation (VCF) Operations was not collecting the information from SDDC Manager.
• SDDC manager UI was not available
• SSH is activated on the Management Domain vCenter Server.
• The root password on the Management Domain vCenter is valid and not recently changed.
• Tried restarting restarting the sddc-manager-ui-app service did not fix the issue.

Environment

VMware Cloud Foundation 9.x

Cause

VCF Fleet Management component is unable to retrieve data from SDDC Manager.

Resolution

 Perform a full restart of the SDDC Manager services:

1. SSH to the SDDC Manager Appliance.
2. Login with VCF user.
3. Run the below command to restart all SDDC Manager core services at once 
   
   /opt/vmware/vcf/operationsmanager/scripts/cli/sddcmanager_restart_services.sh