NCP Monitoring, Maintenance, and Troubleshooting 2 — Questions and Answers
Question 1: A Nutanix administrator notices that a VM is experiencing intermittent network packet loss. Which Prism tool should be used first to correlate network performance metrics with VM activity?
- Prism Central Analysis dashboard
- VM network latency graph in Prism Element
- 1-Click analysis in Prism Central
- Network Visualization in Prism Central (Correct answer)
Correct answer: Network Visualization in Prism Central
Prism Central's Network Visualization provides topology maps and traffic flow data to correlate network issues with specific VMs.
Question 2: During a rolling upgrade of AOS, one CVM fails to rejoin the cluster after rebooting. What is the recommended first step?
- Force restart the CVM using IPMI
- Check CVM logs at /home/nutanix/data/logs/
- Run NCC health checks on all other CVMs
- Manually trigger genesis restart on the failed CVM (Correct answer)
Correct answer: Manually trigger genesis restart on the failed CVM
Restarting genesis on the failed CVM is the recommended first step as genesis manages CVM services and cluster membership.
Question 3: An alert fires stating 'Metadata disk usage exceeds 75%.' Which action MOST directly addresses this condition?
- Add SSDs to existing nodes
- Run a full cluster storage rebalance
- Expand the cluster by adding new nodes
- Delete stale snapshots and reclaim space (Correct answer)
Correct answer: Delete stale snapshots and reclaim space
Deleting stale snapshots frees metadata disk space most directly without requiring hardware changes.
Question 4: Which log file on a CVM contains the most detailed output for diagnosing Stargate (data I/O) issues?
- /home/nutanix/data/logs/stargate.INFO (Correct answer)
- /home/nutanix/data/logs/curator.INFO
- /home/nutanix/data/logs/prism_gateway.log
- /home/nutanix/data/logs/zookeeper.out
Correct answer: /home/nutanix/data/logs/stargate.INFO
stargate.INFO contains detailed logs for the Stargate service, which handles all data I/O operations.
Question 5: A Nutanix cluster's NCC check reports 'CVM memory usage critical.' Which Prism panel shows real-time CVM memory consumption per node?
- Hardware → Node Details
- Analysis → Metric Charts → CVM Memory Usage (Correct answer)
- Health → Summary
- Storage → Overview
Correct answer: Analysis → Metric Charts → CVM Memory Usage
The Analysis dashboard in Prism allows you to plot custom metric charts, including per-node CVM memory usage in real time.
Question 6: What is the primary purpose of the Nutanix Pulse feature?
- Automated live migration of VMs during maintenance
- Proactive health monitoring by sending diagnostic data to Nutanix Support (Correct answer)
- Real-time replication status for DR sites
- Auto-remediation of failed CVM services
Correct answer: Proactive health monitoring by sending diagnostic data to Nutanix Support
Pulse collects and transmits cluster diagnostic data to Nutanix Support for proactive health monitoring and issue detection.
Question 7: An administrator needs to temporarily remove a node from a Nutanix cluster for hardware replacement without data loss. Which process should be followed?
- Power off the node and remove it physically
- Mark the node as degraded in Prism, then remove
- Perform a node removal workflow from Prism Element which triggers data migration (Correct answer)
- Shut down all VMs on the node, then decommission
Correct answer: Perform a node removal workflow from Prism Element which triggers data migration
The node removal workflow in Prism Element automatically migrates data off the node before it is removed, ensuring no data loss.
NCP Monitoring, Maintenance, and Troubleshooting 2
A Nutanix administrator notices that a VM is experiencing intermittent network packet loss.
Which Prism tool should be used first to correlate network performance metrics with VM activity?