How to Monitor VM in Azure: Simple Steps to Track Performance

To monitor a VM in Azure, enable Azure Monitor and configure metrics and logs collection for your VM. Use the Azure Portal or Azure CLI to view performance data like CPU, memory, and disk usage in real time.

Syntax

Monitoring a VM in Azure involves enabling diagnostics and collecting metrics and logs. The main steps include:

• Enable Azure Monitor: Activates monitoring for your VM.
• Configure Diagnostics: Collects performance counters and logs.
• View Metrics: Check CPU, memory, disk, and network usage.
• Use Alerts: Set notifications for specific conditions.

bash

az vm monitor metrics tail --resource-group <resource-group-name> --name <vm-name>

Example

This example shows how to enable monitoring on an Azure VM using Azure CLI and then check CPU usage metrics in the Azure Portal.

bash

az vm monitor metrics tail --resource-group MyResourceGroup --name MyVM

# After enabling, go to Azure Portal > Virtual Machines > MyVM > Metrics
# Select 'Percentage CPU' to view CPU usage over time.

Output

Monitoring metrics for VM 'MyVM' in resource group 'MyResourceGroup'.

Common Pitfalls

Common mistakes when monitoring Azure VMs include:

• Not enabling diagnostics extension, so no data is collected.
• Confusing Azure Monitor with Azure Security Center; they serve different purposes.
• Ignoring cost implications of extensive log retention.
• Not setting alerts, missing critical performance issues.

bash

## Wrong: Trying to view metrics without enabling monitoring
az vm show --resource-group MyResourceGroup --name MyVM

## Right: Enable monitoring first
az vm monitor metrics tail --resource-group MyResourceGroup --name MyVM

Quick Reference

Key tips for monitoring Azure VMs:

• Use az vm monitor metrics tail to start monitoring.
• Check metrics like CPU, memory, disk, and network in Azure Portal.
• Set alerts to get notified on performance issues.
• Use Log Analytics for detailed log queries.

Key Takeaways

Enable Azure Monitor on your VM to start collecting performance data.

Use Azure Portal metrics to track CPU, memory, disk, and network usage.

Set alerts to get notified about important performance changes.

Enable diagnostics extension to collect logs and detailed metrics.

Monitor costs related to log storage and adjust retention accordingly.