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Containerd - An Open and Reliable Container Runtime
Containerd is an open and reliable container runtime that manages the complete container lifecycle of its host system, from image transfer and storage to container execution and supervision.
Go
Added on 2025年6月23日18,826
Stars3,592
ForksGo
LanguageProject Introduction
Summary
Containerd is a core container runtime that provides a minimal set of functionalities needed to run and manage containers on a node. It's designed to be embedded into larger systems like orchestrators or container platforms.
Problem Solved
Containerd addresses the need for a robust, standardized, and low-level runtime layer that can be consumed by higher-level systems (like Kubernetes or Docker) without including orchestration complexities. It provides a stable base for building container platforms.
Core Features
Image Management
Manages pushing and pulling container images, storing them efficiently.
Container Execution and Lifecycle
Provides APIs and tools for creating, starting, stopping, and deleting containers.
Low-Level Runtime Interface
Handles low-level container operations, including process management and namespaces.
Pluggable Architecture
Supports integration with various storage and network plugins.
Tech Stack
Go
gRPC
Linux Namespaces
cgroups
Rust (optional components)
C
Use Cases
Containerd is a foundational component used in various container-related scenarios, typically as the underlying runtime for higher-level systems.
Powering Kubernetes Clusters
Details
Containerd is the default runtime for Kubernetes, providing the core functionality to pull images and run/manage pods.
User Value
Enables Kubernetes to manage containers efficiently and reliably across nodes.
Underlying Runtime for Docker
Details
Used by projects like Docker Engine to execute and manage containers on a host.
User Value
Provides Docker with a robust, separate runtime component, improving modularity and stability.
Building Custom Container Platforms
Details
Developers building custom container tools or platforms can use containerd's API to handle low-level container operations.
User Value
Offers a solid, standards-compliant base, reducing the need to reimplement core container runtime logic.
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