HTTP 500 Error When Changing from the default SSO domain to customized SSO Domain

Products

• VMware HCX

Issue/Introduction

• When attempting to change the default SSO domain from vsphere.local\Administrators to example.com\Administrators in the HCX UI, the operation fails with the following banner error:
  Http failure response for https://<HCX-Manager-FQDN>:9443/api/admin/global/config/roleMappings: 500 OK
  
  
• In the HCX_UI when logged in as admin under Configuration --> vCenter Server -> vCenter.example.com is configured while in Configuration --> SSO --> psc.example.com is configured 
• HCX Manager : /common/logs/appliance-management/appliance-management.log , in the below snippet you would see the FQDN of  a load balancer returned 
  
  <timestamps> UTC [https-jsse-nio-9443-exec-3, , ] DEBUG o.s.web.servlet.DispatcherServlet- Failed to complete request: java.lang.Exception: SSO  psc.example.com provided in 'SSO' section is not configured to any Lookup Service urls [" psc_loadbalancer.example.com"] registered to VCenters configured in 'vCenter' section
<timestamps> UTC [https-jsse-nio-9443-exec-3, , ] ERROR o.a.c.c.C.[.[.[.[dispatcherServlet]- Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.Exception: SSO  psc.example.com provided in 'SSO' section is not configured to any Lookup Service urls [" psc_loadbalancer.example.com"] registered to VCenters configured in 'vCenter' section] with root cause
java.lang.Exception: SSO  psc.example.com provided in 'SSO' section is not configured to any Lookup Service urls [" psc_loadbalancer.example.com"] registered to VCenters configured in 'vCenter' section
        at com.vmware.hybridity.admin.config.RoleConfigRestController.getVsphereServerConfig(RoleConfigRestController.java:212)
        at com.vmware.hybridity.admin.config.RoleConfigRestController.validateAndGetVcConnection(RoleConfigRestController.java:183)
        at com.vmware.hybridity.admin.config.RoleConfigRestController.updateRoles(RoleConfigRestController.java:90)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

Cause

This can occur  in an legacy environment where the vCenter is configured to PSC load balancer

Resolution

This is a known issue impacting VMware HCX.

Workaround : 

• HCX_UI when logged in as admin under Configuration --> SSO change from psc.example.com to psc_loadbalancer.example.com