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wiki/concepts/Logstash.md
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title: "Logstash"
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type: concept
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tags: [Log-Analytics, Data-Processing, ETL]
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date: 2026-04-14
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---
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## Definition
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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。
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## Description
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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。
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## Connections
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- [[Logstash]] ← receives_from ← [[BEATS]]
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- [[Logstash]] ← sends_to ← [[Elasticsearch]]
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- [[Logstash]] ← uses_buffer ← [[Redis]]
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- [[ELK Stack]] ← depends_on ← [[Logstash]]
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