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wiki/entities/containerd.md
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wiki/entities/containerd.md
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title: "containerd"
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tags: [docker, container, runtime]
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date: 2026-04-22
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---
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# containerd
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## Definition
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containerd 是 Docker 的容器运行时底层引擎,现已捐赠给 CNCF 成为独立毕业项目。它负责容器的完整生命周期管理:镜像拉取、容器创建、进程运行、资源隔离。
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## Architecture Position
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```
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docker CLI → dockerd → containerd → runc → containers
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```
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## Key Characteristics
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- **CNCF 毕业项目**:Kubernetes 默认使用的容器运行时
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- **OCI 标准兼容**:支持 OCI 镜像和运行时规范
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- **轻量级**:专注容器管理,不包含网络和存储编排
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## Related Sources
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- [[如何在ubuntu-server安装-docker-docker-compose]] — Docker Engine 安装时会同时安装 containerd.io
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## Related Concepts
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- [[Docker Engine]] — containerd 的上层封装
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- [[Docker Compose]] — 通过 Docker Engine 间接使用 containerd
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- [[Docker 用户组]] — 控制 Docker Engine 访问权限
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