Log Analyzer Skill for Claude
日志分析助手 — 智能解析日志文件，识别异常模式，定位问题根因
Install
one command, takes just this skill from the repositorynpx skills add https://github.com/laolaoshiren/claude-code-skills-zh --skill log-analyzerThe instruction itself
6 sections, as written by the author📋 log-analyzer — 日志分析助手
触发条件
当用户要求以下操作时激活此技能：
- 分析应用日志文件（.log, .txt, journalctl 输出等）
- 排查线上问题和异常
- 从日志中提取统计信息
- 生成日志分析报告
工作流程
1. 日志格式识别
自动检测日志格式：
- 结构化: JSON logs, Logfmt
- 常见格式: Nginx/Apache access log, Spring Boot, Django, Rails
- 系统日志: syslog, journalctl, Windows Event Log
- 自定义格式: 根据正则提取字段
2. 日志预处理
- 按时间范围过滤（如「最近 1 小时」「今天」）
- 按日志级别筛选（ERROR, WARN, INFO, DEBUG）
- 按来源/模块/服务过滤
- 去重和聚合相似错误
3. 异常模式检测
- 错误聚类: 将相似错误归为一组，避免重复分析
- 频率分析: 识别高频错误和突发异常
- 时间关联: 发现错误是否与特定事件（部署、流量高峰）相关
- 因果链追踪: 从根因错误到最终表现
4. 关键信息提取
- 错误堆栈分析（定位源码位置）
- HTTP 状态码分布（4xx/5xx 比例）
- 响应时间统计（P50/P95/P99）
- 内存/CPU 异常指标
5. 生成分析报告
## 📊 日志分析报告
### 概览
- 时间范围: 2024-01-15 10:00 ~ 12:00
- 总日志量: 12,847 条
- 错误数: 234 (1.8%)
- 警告数: 567 (4.4%)
### Top 5 异常
| 排名 | 错误类型 | 次数 | 首次出现 | 最近出现 |
|------|---------|------|---------|---------|
| 1 | NullPointerException | 89 | 10:15 | 11:42 |
| 2 | ConnectionTimeout | 67 | 10:23 | 11:58 |
### 根因分析
最可能的原因：数据库连接池耗尽（线索：连续出现 ConnectionTimeout 后跟大量 NullPointerException）
### 建议
1. 检查数据库连接池配置（当前可能 maxActive 太小）
2. 排查是否存在连接泄漏
3. 添加连接池监控告警
支持的日志来源
- 文件系统日志（*.log）
- Docker/Kubernetes 容器日志
- journalctl 系统日志
- AWS CloudWatch / GCP Logging
- ELK Stack (Elasticsearch 查询结果)
- 应用直接输出的文本
注意事项
- 敏感信息脱敏（密码、token、手机号等）
- 大文件分块处理，避免内存溢出
- 时区统一处理
- 不要臆造日志中不存在的信息
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How to use it
Take laolaoshiren/log-analyzer from the repository into ~/.claude/skills for personal
use, or into .claude/skills inside a project.
The agent identifies a skill by the name field in its header. Two skills with the
same name cannot sit side by side — one of them will be ignored.