logs

Enterprise Log Analysis

Analyze system logs for troubleshooting, monitoring, and security analysis.

Context

• Recent system logs: !journalctl --no-pager -n 100 --since "1 hour ago"
• Application logs: !tail -n 50 /var/log/application.log 2>/dev/null || echo "Application logs not found"
• Error logs: !grep -i error /var/log/syslog 2>/dev/null | tail -20 || echo "No recent errors found"
• Security logs: !grep -i "failed\|denied\|unauthorized" /var/log/auth.log 2>/dev/null | tail -10 || echo "No security events found"
• Web server logs: !tail -n 20 /var/log/nginx/access.log 2>/dev/null || tail -n 20 /var/log/apache2/access.log 2>/dev/null || echo "Web server logs not found"

Your task

Based on the log information above, provide a comprehensive log analysis including:

1. Log Summary

   • Total log entries analyzed
   • Log levels distribution (ERROR, WARN, INFO, DEBUG)
   • Time range covered
   • Key patterns and trends

2. Error Analysis

   • Critical errors requiring immediate attention
   • Warning patterns and trends
   • Error frequency and impact assessment
   • Root cause analysis for recurring issues

3. Security Analysis

   • Failed authentication attempts
   • Unauthorized access attempts
   • Suspicious activity patterns
   • Security event correlation

4. Performance Analysis

   • Response time patterns
   • Resource usage spikes
   • Performance bottlenecks
   • Capacity planning insights

5. Recommendations

   • Immediate actions for critical issues
   • Log monitoring improvements
   • Alert configuration suggestions
   • Troubleshooting guidance

Arguments

• service: Specific service logs to analyze (optional)
• level: Log level filter (error, warn, info, debug, optional)
• timeframe: Time range for analysis (1h, 6h, 24h, 7d, optional)

Usage Examples

/logs
/logs database error
/logs api warn 24h
/logs security 7d

Focus on enterprise-grade log analysis with actionable insights for system reliability, security, and performance optimization.