Pattern
%{IP:client}Capture
client = "1.2.3.4"
Developer Tools
Grok Tester — Logstash Pattern Debugger
Match log lines against Grok patterns locally in your browser and inspect captured fields. Useful for debugging Logstash and ELK ingestion rules without a full server pipeline.
GrokELKLogs
Quick switch:Regex Extractor
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开发工具
Grok Tester
Match log lines against Grok patterns locally in your browser and inspect captured fields. Useful for debugging Logstash and ELK ingestion rules without a full server pipeline.
Grok Pattern (如 Elk 风格)
Raw Log (纯文本日志行)
结构化捕获 (Extracted JSON)
等待执行...
Tip: 工具由轻量的纯前端 Regex 转译引擎驱动运行。它将标准的 Grok 符号替换为其正则基础映射，并捕获具名字段，省去了您配置 Logstash 重启调试的折磨。
Use cases
- Self-test Nginx access log rules before shipping
- Verify syslog lines split into the expected fields
- Iterate on ELK pipeline patterns quickly
How to use
- Paste a real log line
- Enter the Grok matching pattern
- Review whether captured fields match expectations
Example input and output
FAQ
Do I need Logstash installed?
No. Matching runs locally in the browser so you can validate patterns before changing ingestion config.
Which pattern syntax is supported?
Common %{PATTERN:name} forms are supported. Confirm advanced custom patterns against your runtime environment.
Tools
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