After upgrade to vCenter 8.0 U3 VAMI interface not accessible - 0 Unknown Error

Products

• VMware vCenter Server

Issue/Introduction

 When accessing the VAMI (https://<vCenter_FQDN>:5480 or <vCenter_IP_address>) after upgrade to vCenter 8.0 U3 or higher we see the following error.

 

Environment

VMware vCenter Server Appliance 8.0U3

Cause

This issue is caused due to the cap-lighttp.service not running on the vCenter Server Appliance. 

Resolution

Starting with vCenter Server 8.0 Update 3, VMware has replaced the legacy applmgmt vami-lighttp service with cap-lighttp service

To resolve the issue follow the steps below:

1. SSH to vCenter Server Appliance via CLI and check the status of the service cap-lighttpd by running the following command.
   

   systemctl status cap-lighttpd.service

2. If the service is not running then start the service.
   

   systemctl start cap-lighttpd.service

3. Verify the VAMI is accessible.