FileExamples
LOG500 rows

Sample Server Error Log

Download a free sample error log file containing 500 error entries with realistic stack traces, warning messages, fatal errors, and debug output. Includes timestamps, severity levels, error codes, and multi-line stack traces from a simulated Node.js/Python application. Perfect for testing error monitoring tools, log aggregation, and alerting pipelines.

Download LOG (.log)

Data Structure Preview

[2024-06-15T10:30:15.123Z] ERROR [app] DatabaseConnectionError: Connection refused to 10.0.0.5:5432
    at Pool.connect (/app/node_modules/pg/lib/pool.js:318:19)
    at async UserService.getById (/app/src/services/user.js:42:12)
[2024-06-15T10:30:16.456Z] WARN [auth] Rate limit exceeded for IP 192.168.1.42 (150 requests/min)
[2024-06-15T10:30:17.789Z] FATAL [worker] OutOfMemoryError: JavaScript heap out of memory

Fields

timestampseveritymoduleerror_typemessagestack_trace

Common Use Cases

  • Testing error log parsing and categorization
  • Developing error monitoring dashboards
  • Testing alerting rules on error patterns
  • Validating stack trace extraction logic
  • Testing log rotation and archival processes

Related Tools

File Diff

Frequently Asked Questions

What severity levels are included?

The log includes DEBUG, INFO, WARN, ERROR, and FATAL severity levels with realistic distribution.

Do stack traces span multiple lines?

Yes. Error entries include multi-line stack traces with file paths and line numbers, simulating real application errors.