To deploy a database resilient cluster engine across three Nutanix clusters, the database engine must support high availability (HA) and distributed deployment capabilities that NDB can manage across multiple clusters. PostgreSQL is the only database engine listed that NDB supports for a resilient cluster deployment across multiple clusters. NDB’s HA features for PostgreSQL include automated failover, replication, and data consistency across geographically distributed clusters, making it suitable for a three-cluster scenario. This is achieved through PostgreSQL’s built-in streaming replication and NDB’s orchestration of HA policies.
Other options are not supported for this use case in NDB:
A. MariaDB: While MariaDB supports replication, NDB does not currently provide multi-cluster HA or resilient cluster deployment for MariaDB.
B. MySQL: Similar to MariaDB, MySQL lacks native multi-cluster HA support within NDB’s framework.
D. Oracle: Oracle databases can be managed by NDB, but multi-cluster resilient deployments are not natively supported; Oracle RAC (Real Application Clusters) requires specific configurations beyond NDB’s standard capabilities.
Thus, the verified answer is C, as PostgreSQL aligns with NDB’s multi-cluster resilience features.
Official Nutanix Database Automation References
Nutanix Database Management & Automation (NDMA) course, Module 4: High Availability and Disaster Recovery, Lesson 4.2: Configuring Multi-Cluster HA.
Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Knowledge Objectives, Section 4: Troubleshoot NDB Solutions, Objective 4.3: Configure HA Across Clusters (applicable to v6.10).
Nutanix NDB Administration Guide: "Supported Database Engines for HA" section, highlighting PostgreSQL multi-cluster support.
