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Troubleshooting

文档版本: 1.0.0
最后更新: 2025-08-19
Git 提交: c1aa5b0f
作者: Lincoln

This section provides solutions and troubleshooting guides for common JAiRouter issues, helping users quickly identify and resolve various problems encountered during system operation.

Troubleshooting Overview

When JAiRouter encounters issues, it is recommended to follow this systematic approach for troubleshooting:

Troubleshooting Process

  1. Quick Diagnosis - Check basic service status and connectivity
  2. Log Analysis - Review application logs and error messages
  3. Performance Monitoring - Analyze system resource usage and performance metrics
  4. Configuration Validation - Verify configuration files and parameter settings
  5. In-depth Debugging - Use professional tools for detailed analysis

Diagnostic Tools

  • Health Check Endpoint: /actuator/health
  • Monitoring Metrics Endpoint: /actuator/metrics
  • Configuration Information Endpoint: /actuator/configprops
  • Log Files: logs/jairouter-debug.log

Issue Classification

By Severity

  • Critical Issues - Service completely unavailable, affecting all users
  • Major Issues - Partial functionality abnormal, affecting some users
  • Minor Issues - Performance degradation or occasional exceptions
  • Trivial Issues - Log warnings or configuration suggestions

By Issue Type

  • Startup Issues - Application fails to start or exits abnormally
  • Connection Issues - Backend service connection failures or timeouts
  • Performance Issues - Slow response, high resource usage, or low throughput
  • Configuration Issues - Configuration errors, ineffectiveness, or conflicts
  • Functional Issues - Load balancing, rate limiting, circuit breaker function abnormalities

Troubleshooting Guides

Common Issues

Collects the most frequently encountered problems and their solutions during usage, including: - Startup failures and configuration errors - Connection timeouts and network issues - Memory leaks and performance degradation - Load balancing and rate limiting configuration problems

Performance Troubleshooting

Dedicated diagnostic and optimization guide for performance-related issues: - Analysis and optimization of long response times - Causes and solutions for insufficient throughput - Handling of high memory and CPU usage - JVM tuning and system optimization strategies

Debugging Guide

Provides detailed debugging techniques and tool usage methods: - Debugging configurations for development and production environments - Log analysis and network debugging techniques - JVM memory and thread debugging methods - Reactive programming debugging strategies

Quick Diagnosis Checklist

Basic Checks

  • [ ] Service started normally (curl http://localhost:8080/actuator/health)
  • [ ] Port listening normally (netstat -tlnp | grep :8080)
  • [ ] Configuration file format is correct
  • [ ] Java version meets requirements (Java 17+)

Connection Checks

  • [ ] Backend services are reachable
  • [ ] Network firewall is not blocking connections
  • [ ] DNS resolution is normal
  • [ ] SSL certificates are valid

Performance Checks

  • [ ] CPU usage is normal (< 80%)
  • [ ] Memory usage is normal (< 85%)
  • [ ] Response time is within expected range
  • [ ] Error rate is within acceptable range (< 1%)

Configuration Checks

  • [ ] Service instance configuration is correct
  • [ ] Load balancing strategy is appropriate
  • [ ] Rate limiting parameters are reasonable
  • [ ] Circuit breaker thresholds are appropriate

Monitoring and Alerting

Key Monitoring Metrics

# Service health status
curl http://localhost:8080/actuator/health

# Request statistics
curl http://localhost:8080/actuator/metrics/jairouter.requests.total

# Response time
curl http://localhost:8080/actuator/metrics/jairouter.request.duration

# JVM memory usage
curl http://localhost:8080/actuator/metrics/jvm.memory.used

# System CPU usage
curl http://localhost:8080/actuator/metrics/system.cpu.usage

Alert Threshold Recommendations

  • Response Time: P95 > 5s alert, P95 > 10s critical alert
  • Error Rate: > 1% alert, > 5% critical alert
  • CPU Usage: > 80% alert, > 90% critical alert
  • Memory Usage: > 85% alert, > 95% critical alert

Incident Handling Process

1. Issue Reporting

  • Collect detailed error information and environment description
  • Record the time and frequency of issue occurrence
  • Save relevant logs and configuration files

2. Initial Diagnosis

  • Perform basic checks using the quick diagnosis checklist
  • Review monitoring metrics to identify abnormal patterns
  • Analyze log files to locate error causes

3. In-depth Analysis

  • Select appropriate debugging tools based on issue type
  • Conduct detailed performance analysis or network diagnosis
  • Enable detailed logging when necessary

4. Solution Implementation

  • Develop solutions based on analysis results
  • Validate fix effectiveness in test environment
  • Carefully implement fixes in production environment

5. Verification and Summary

  • Verify that the issue is completely resolved
  • Update monitoring and alerting strategies
  • Document issues and solutions for future reference

Preventive Measures

Configuration Management

  • Use version control to manage configuration files
  • Establish configuration change review processes
  • Regularly back up important configuration data

Monitoring System

  • Establish a comprehensive monitoring metrics system
  • Set reasonable alert thresholds
  • Regularly check monitoring system effectiveness

Capacity Planning

  • Regularly assess system capacity requirements
  • Conduct performance stress testing
  • Develop expansion and optimization plans

Operations Procedures

  • Establish standardized operations procedures
  • Regularly conduct failure drills
  • Continuously improve issue handling efficiency

Getting Help

If you still cannot resolve the issue following this guide, you can get help through the following methods:

Community Support

  • Check GitHub Issues for known issues
  • Search related discussions and solutions
  • Participate in community discussions for advice

Issue Reporting

  • Submit new Issues using the issue report template
  • Provide detailed environment information and error logs
  • Include reproduction steps and expected behavior description

Documentation Resources

Professional Support

  • Contact the project maintenance team
  • Seek professional technical support services
  • Attend related training and workshops

Remember, most issues have solutions - the key is adopting a systematic approach for diagnosis and handling.