📊 Azure Monitoring

Introduction

Azure Monitor provides comprehensive monitoring, alerting, and diagnostics for Azure resources and applications.

Key Learning Outcomes

By the end of this lesson, you'll understand:

• Azure Monitor dashboards

• Application Insights

• Setting up alerts

• Logging and diagnostics

• Performance metrics

• Cost analysis

Creating Application Insights

# Create Application Insights
az monitor app-insights component create \
  --app myappinsights \
  --location eastus \
  --resource-group myResourceGroup \
  --application-type web

Instrumentation

Node.js:

const appInsights = require("applicationinsights");

appInsights.setup("<instrumentation-key>")
  .setAutoDependencyCorrelation(true)
  .setAutoCollectRequests(true)
  .setAutoCollectPerformance(true)
  .setAutoCollectExceptions(true)
  .start();

const client = appInsights.defaultClient;

// Track events
client.trackEvent({
  name: "UserSignup",
  properties: {email: "user@example.com"}
});

// Track exceptions
try {
  // code
} catch (error) {
  client.trackException({error});
}

Creating Alerts

# Create metric alert
az monitor metrics alert create \
  --name "High CPU Alert" \
  --resource-group myResourceGroup \
  --scopes /subscriptions/.../myVM \
  --condition "avg Percentage CPU > 80" \
  --description "Alert when CPU exceeds 80%"

Viewing Metrics

# Get metrics
az monitor metrics list \
  --resource /subscriptions/.../myVM \
  --metric "Percentage CPU" \
  --start-time 2024-01-01T00:00:00 \
  --end-time 2024-01-31T23:59:59 \
  --interval PT1H

Key Takeaways

• **Application Insights** monitors application health

• **Metrics** track performance indicators

• **Alerts** notify on anomalies

• **Logs** provide detailed diagnostics

• **Dashboards** visualize key metrics

Next Steps

Learn about Azure Identity for access control, or explore cost optimization strategies.