Batch 9: Obsidian插件/AI开源平替/Coze培训/TK面单/Ubuntu科学上网
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wiki/concepts/CloudWatch-Logs.md
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title: "CloudWatch Logs"
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type: concept
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tags: [aws, observability, logging, devops]
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date: 2025-10-25
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---
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## Definition
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Amazon CloudWatch Logs,AWS 日志存储与分析服务,支持从 AWS 服务、本地服务器、第三方应用收集日志,并以结构化或非结构化文本形式持久化。
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## Key Properties
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- **日志组(Log Group)**:日志流的组织单元,可设置保留期和加密策略
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- **KMS 加密**:日志组可使用客户托管 KMS 密钥(CMK)加密,满足合规要求
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- **订阅过滤器(Subscription Filter)**:将日志实时流式传输至 Lambda、Kinesis Firehose 或第三方目标
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- **跨账户日志**:通过 CloudWatch Logs Insights 跨账户查询(Cross-Account Query)
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## Use Cases in This Context
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- StackSets 场景:central-cloudformation-logs 日志组存储来自所有成员账户的 CloudFormation 事件
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- 与 [[EventBridge]] 配合,作为跨账户事件转发后的集中存储层
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- 通过 CloudWatch Logs Insights 提供跨账户查询能力
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## Related Concepts
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- [[可观测性]]:CloudWatch Logs 是 Metrics/Logs/Traces 三大支柱之一
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- [[CloudWatch Logs Insights]]:结构化日志查询引擎
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- [[EventBridge]]:CloudWatch Logs 的事件来源之一
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## Source
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[[AWS-CloudFormation-StackSets-多账户集中日志监控]]
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