Azure Event Hubs

Monitoring Azure Event Hubs

Effective monitoring is crucial for understanding the health, performance, and usage patterns of your Azure Event Hubs. This guide outlines key metrics, tools, and best practices for monitoring your Event Hubs instances.

Key Metrics to Monitor

Azure Event Hubs provides a rich set of metrics that you can access through Azure Monitor. Focus on the following categories:

• Throughput:
  • Incoming Requests: Number of requests to Event Hubs.
  • Outgoing Requests: Number of responses from Event Hubs.
  • Bytes In/Out: Amount of data sent to and received from Event Hubs.
  • Message Throughput: Number of messages sent and received.
• Latency:
  • Incoming Request Latency: Time taken to process incoming requests.
  • Outgoing Request Latency: Time taken to process outgoing requests.
• Errors:
  • Server Errors: Number of 5xx errors.
  • Client Errors: Number of 4xx errors.
  • Throttled Requests: Number of requests that were throttled due to exceeding capacity limits.
• Capacity:
  • Total Connections: Current number of active connections.
  • Capture Operations Succeeded/Failed: Success rate of Event Hubs Capture.

Tools for Monitoring

Azure Monitor

Azure Monitor is the primary tool for collecting, analyzing, and acting on telemetry from your Azure resources. Event Hubs integrates seamlessly with Azure Monitor.

AzureMetrics
| where ResourceProvider == "MICROSOFT.EVENTHUB" and MetricName == "IncomingRequests"
| summarize sum(MetricValue) by bin(TimeGenerated, 1h), Resource
| render timechart
            

Azure Advisor

Azure Advisor provides personalized recommendations to optimize your Azure resources. It can offer suggestions related to performance and cost for Event Hubs.

Best Practices for Monitoring

• Establish Baselines: Understand normal operating ranges for your key metrics during peak and off-peak times. This makes it easier to detect anomalies.
• Set Meaningful Alerts: Configure alerts based on thresholds that indicate actual problems, rather than just any deviation.
• Use Log Analytics for Deep Dives: When investigating issues, diagnostic logs in Log Analytics are invaluable for pinpointing the root cause.
• Monitor Producer and Consumer Applications: Event Hubs monitoring is only half the story. Ensure your applications producing and consuming messages are also monitored for errors and performance.
• Regularly Review Metrics: Periodically review your metrics dashboards to identify performance bottlenecks or areas for optimization.
• Leverage Application Insights: For applications interacting with Event Hubs, integrate Application Insights for end-to-end tracing and dependency monitoring.