Unable to Delete Tier-0 from Global Manager Due to Overridden BGP Configuration

Products

• VMware NSX

Issue/Introduction

• Error Message: Object has overridden children in path /global-infra/tier-0s/####/locale-services/####/bgp
• When attempting to delete a Global Tier-0 (T0) Gateway from the Global Manager (GM), the deletion fails or hangs indefinitely.
• UI Status: Both GM and Local Manager (LM) show a status of "Deletion in progress" .
• UI Behavior: Edit options for the T0 gateway are greyed out or inaccessible on both LM/GM.
• Tier0 gateway is in a partially deleted greyed out state.

Environment

VMware NSX

Cause

This issue occurs because a configuration (in this case, BGP) was modified directly on the Local Manager, creating an override.

In an NSX-T Federation environment, the Global Manager cannot delete a global object if there are local overrides remaining on a site. The local "child" object (BGP) must be cleaned up before the global "parent" object (T0) can be removed.

Resolution

1. Identify the Overridden Resources : 
   
   • First, confirm exactly which objects are preventing the deletion by querying the Global Manager for a list of all overridden configurations.

   • GET https://<global-mgr>/global-manager/api/v1/global-infra/overridden-resources

   • Reference : Overriding Global Manager Configurations on Local Manager
     
     
2. Delete the Override on the Local Manager :
   
   • To break the lock, you must send a specific API call to the Local Manager (LM) where the override exists. You must include the override=true parameter.

   • DELETE https://<local-mgr-ip>/policy/api/v1/infra/tier-0s/{tier-0-id}/locale-services/{locale-service-id}/bgp?override=true

3. Verify Deletion :
   
   • Once the local override is removed, the Global Manager should automatically resume the deletion process for the Global T0.
   • Refresh the Global Manager UI.
   • The Tier-0 gateway should now be removed from the configuration.