When an administrator enables NDB Multi-cluster functionality, certain components are deployed or reconfigured to support the distributed environment. HAProxy (High Availability Proxy) is a critical component that manages load balancing and secure communication across clusters. In a multi-cluster setup, HAProxy is deployed on a dedicated VM to ensure efficient traffic distribution and high availability for NDB services, such as API calls and GUI access, across the clusters. This dedicated deployment enhances scalability and resilience.
Option A (Agent VM) is incorrect because Agent VMs are typically deployed on managed database VMs, not as dedicated NDB service components in multi-cluster setups.
Option B (HAProxy) is correct as it is specifically deployed on a dedicated VM to handle load balancing in a multi-cluster NDB environment.
Option C (Repository DB) is incorrect because the Repository DB is part of the NDB control plane and not necessarily deployed on a separate VM for multi-cluster purposes.
Option D (APIVM) is incorrect because the API VM is part of the core NDB infrastructure but not specifically deployed as a dedicated VM for multi-cluster enablement.
References
Nutanix Database Service (NDB) User Guide, Chapter 3: Configuring an NDB Environment, Section: Multi-Cluster Configuration
Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Blueprint, Section 3: Configure an NDB Environment
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