What underlying technologies does Docker use?
Apr 15, 2025 am 07:09 AMDocker uses container engines, mirror formats, storage drivers, network models, container orchestration tools, operating system virtualization, and container registry to support its containerization capabilities, providing lightweight, portable and automated application deployment and management.
The underlying technology used by Docker
Docker uses a variety of underlying technologies to support its containerization capabilities, including:
1. Container Engine
- Responsible for creating, starting, stopping and managing containers.
- Provides isolation, resource management and process management mechanisms.
- The Docker engine is based on libcontainer and runc.
2. Mirror format
- Stores application code, dependencies, and configuration of containers.
- Docker image format is based on UnionFS and COW (copy-on-write) technologies.
3. Storage driver
- Manage file systems within containers.
- Docker supports storage drivers such as AUFS, DeviceMapper, OverlayFS and ZFS.
4. Network model
- Provides network connections between containers and hosts and the external world.
- Docker uses network models such as Bridge, Host, Overlay and Macvlan.
5. Container Orchestration Tool
- Automate container management and deployment, such as Docker Compose and Kubernetes.
- Provides the ability to orchestrate, schedule and manage multiple containers.
6. Operating system virtualization
- Create a virtualized environment on the host to provide a different environment for the container than the host operating system.
- Docker uses Linux kernel namespaces, cgroups, and kernel isolation capabilities.
7. Container Registration
- Store and distribute Docker images.
- Docker Hub is the official container registry that hosts a wide range of public images.
By combining these underlying technologies, Docker can provide a lightweight, portable, and automated way to deploy and manage applications.
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