Last Attempt NCP-DB Questions

The command era-server > era server set ip=ip_address gateway=gateway_address netmask=ip_netmask nameserver=ns1 ntp_server=ntp1 is used to assign a static IP address to the NDB VM via the era-server CLI. This command requires core network parameters (ip, gateway, and netmask) to configure the VM’s network interface correctly. However, optional parameters like nameserver (DNS server) and ntp_server (Network Time Protocol server) can be omitted if the administrator relies on default or externally configured DNS and NTP settings (e.g., via DHCP or another management system). These optional parameters enhance functionality but are not mandatory for the basic static IP configuration.

Option A (ntp_server) is correct as it is optional and can be configured separately or omitted if NTP is managed externally.

Option B (netmask) is incorrect because the netmask is a required parameter to define the subnet for the IP address.

Option C (gateway) is incorrect because the gateway is a required parameter to specify the network route.

Option D (nameserver) is correct as it is optional and can be omitted if DNS is handled outside NDB.

Note: The typos in the question (gatevay_address, ip_J2etmas^c, narnesetver, ntpl) are assumed to be gateway_address, ip_netmask, nameserver, and ntp1 based on context.

References

Nutanix Database Service (NDB) User Guide, Chapter 6: Administering an NDB Environment, Section: Configuring Network Settings via CLI

Nutanix Support & Insights, Knowledge Base Article: "Configuring Static IP for NDB VM"

Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Blueprint, Section 6: Administer an NDB Environment

When performing a SQL Server Restore Source Database operation in Nutanix Database Automation (NCP-DB), an administrator might choose the Restore Location as New Location if they want to restore to a new location and have Era apply Nutanix best practices1. This is because Nutanix Era automates and simplifies database management, allowing the administrator to manage databases at scale, and it applies Nutanix best practices during the restore process1. This ensures optimal performance and reliability of the restored database1.

 NDB HA is a feature that provides high availability and resilience for the NDB service and its components. NDB HA creates a cluster of API server VMs, repository VMs, and HAProxy VMs across multiple Nutanix clusters. Each component has a leader and a set of followers that are synchronized and can take over the leader role in case of a failure. NDB HA also monitors the health and status of the NDB components and performs automatic failover and recovery actions when possible. However, some failure scenarios may require manual intervention from the administrator to restore the NDB service. One such scenario is when more than one API server VM is down. The API server VMs are responsible for handling the requests from the NDB UI and CLI, as well as communicating with the repository VMs and the HAProxy VMs. If more than one API server VM is down, the NDB service may become unavailable or unstable, and the administrator will need to manually restart or redeploy the affected API server VMs. The other options do not require manual interaction for the recovery, as NDB HA can handle them automatically. If one repository VM is down, NDB HA will fail over to another repository VM that has the latest data. If more than one HAProxy VM is down, NDB HA will route the traffic to the remaining HAProxy VMs. If the NDB server process is down, NDB HA will restart the process or fail over to another API server VM. References:

Nutanix Certified Professional - Database Automation (NCP-DB) v6.5, Section 2 - Deploy and Configure an NDB Solution, Objective 2.3: Configure NDB High Availability

Nutanix Database Management & Automation (NDMA) Course, Module 3: Nutanix Database Service (NDB) Installation and Configuration, Lesson 3.3: Configuring NDB High Availability, Topic: NDB HA Architecture and Components

Nutanix Support & Insights, RA-2035: Nutanix Database Service High Availability, Section: NDB HA Failure Scenarios and Recovery Actions

 Nutanix Era can be upgraded using the Offline Upgrade and One-click Upgrade methods. The Offline Upgrade method involves manually downloading the software update and applying it to the Era instance. The One-click Upgrade method allows you to upgrade Era directly from the Era management console with a single click, provided that the Era instance has internet connectivity and can reach the Nutanix software update portal1.