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---
title: "Logstash"
type: concept
tags: [Log-Analytics, Data-Processing, ETL]
date: 2026-04-14
---
## Definition
Logstash 是 ELK Stack 中的日志处理管道组件,负责接收、转换和 enrichment 日志数据,然后发送到 Elasticsearch 存储。
## Description
Logstash 支持多种输入源文件、网络、Beats 等),通过过滤器对日志进行解析、转换、添加字段等处理,然后输出到目标存储。可选使用 Redis 作为消息队列缓冲,防止 Logstash 过载。
## Connections
- [[Logstash]] ← receives_from ← [[BEATS]]
- [[Logstash]] ← sends_to ← [[Elasticsearch]]
- [[Logstash]] ← uses_buffer ← [[Redis]]
- [[ELK Stack]] ← depends_on ← [[Logstash]]