containers/libpod
Libpod
Libpod is a container management library for running and controlling the lifecycle of Open Container Initiative compliant containers and images across different storage backends. It provides a programmatic interface for the remote control and automation of container environments.
The project enables the coordination of multiple containers into pods that share network namespaces and other shared resources. It supports rootless container execution by using user namespaces to launch containers without administrative privileges.
The library covers a broad range of system operations, including image handling for pulling and pushing across registries, network configuration, and resource isolation through control groups to prevent system exhaustion. It also manages the full container lifecycle—from creation and execution to checkpointing and restoration—via OCI-compliant runtimes.
For desktop operating systems, the project supports container execution through a virtual machine backend.
Features
- OCI Container Engines - Implements a core engine that follows Open Container Initiative standards for building and running containers.
- Container Deployment Units - Coordinates multiple containers into logical pods that share network and storage resources.
- Container Image Management - Provides utilities for pulling, pushing, creating, and tagging container images across various registries.
- Container Lifecycle Managers - Provides a background service that handles the creation, execution, checkpointing, and removal of containerized processes.
- Container Orchestration APIs - Provides programmatic interfaces for managing the lifecycle and infrastructure of container environments.
- Layered Filesystems - Manages container filesystems using a stack of read-only layers and a thin writable layer.
- Network Namespace Sharing - Groups multiple containers into pods by sharing the same isolated network stack and IP address.
- Non-Root Container Execution Environments - Executes applications as non-root users within containers using user namespaces to reduce the attack surface.
- Rootless Container Runtimes - Provides an execution environment that allows containers and pods to run without requiring root privileges on the host.
- Container Isolation Configuration - Initializes containers by managing namespaces and cgroup hierarchies to ensure secure resource isolation.
- Virtual Machine Containers - Enables container execution on desktop operating systems by managing a supporting virtual machine backend.
- Container Networking Tools - Establishes network connectivity and manages traffic flow for containers and pods using integrated configuration tools.
- System Resource Constraints - Implements system-level resource quotas using Linux control groups to prevent container resource exhaustion.
- Container Management - OCI-compliant container management.
- Container Engines - Comprehensive management of the container lifecycle.
- Container Runtimes - Library for creating container pods and the foundation for Podman.
