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Continuous Error Tracking (CET)

The Harness Continuous Error Tracking (CET) module provides real-time application error monitoring and diagnosis capabilities, helping development teams quickly discover, locate, and fix problems in production environments.

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Core Features

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Real-Time Monitoring

  • Real-Time Error Collection: Immediately capture exceptions and errors in applications
  • Performance Impact Analysis: Understand the impact of errors on user experience
  • Error Trends: Track changes in error quantity and frequency
  • Multi-Language Support: Java, Python, Node.js, Go, and other major languages

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Root Cause Analysis

  • Stack Tracing: Complete error stack information
  • Variable State: Variable values when errors occurred
  • Log Correlation: Correlate related logs for easier debugging
  • Distributed Tracing: Cross-service error tracking

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Team Collaboration

  • Alert Notifications: Alert through Slack, Email, PagerDuty, and other channels
  • Issue Assignment: Assign errors to corresponding developers
  • Status Management: Track error handling progress
  • Team Filtering: Filter errors by team or service

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Smart Aggregation

  • Fingerprinting: Intelligently identify and aggregate similar errors
  • Version Correlation: Correlate errors with code versions
  • Duplicate Detection: Avoid duplicate alerts

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Use Cases

ScenarioCET Features
Production Issue DiscoveryReal-time alerting
Fast DebuggingComplete stack and variable information
Regression DetectionNew version introduced error detection
SLA MonitoringError rate trend tracking

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Getting Started

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1. Install Agent

Install the corresponding CET Agent based on your tech stack: 
# Node.js
npm install @harness/cet-node-agent

# Python
pip install harness-cet-python

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2. Configure Agent

Set up data collection and upload configuration: 
# harness-cet.yaml
accountId: your-account-id
applicationId: your-app-id
endpoint: https://cet.harness.io

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3. Deploy Application

Deploy the application with the CET Agent.

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4. View Errors

View collected errors through the Harness console.

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5. Configure Alerts

Set alert rules and notification channels.

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Error Information

CET collects the following error information:
CategoryInformation
Exception TypeException name and class
Stack TraceComplete call stack
Request InfoHTTP request details
User InfoUser who triggered the error
Environment ContextServer info, version, etc.

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Best Practices

  1. Full Coverage: Deploy Agents in all critical services
  2. Filter Noise: Configure appropriate ignore rules to filter unimportant errors
  3. Quick Response: Set reasonable alert thresholds to avoid alert fatigue
  4. Continuous Improvement: Regularly review error trends to identify systemic issues