Docker Toolbox

Docker Toolbox

• enables Docker to run on older Mac or Windows operating systems
• Available for both macOS and Windows, however functionality of Docker Toolbox has been superseded by Docker for Mac and Docker for Windows on newer platforms

toolbox01.png

• Consists of a set of apps and a virtualization platform
• Docker Engine - consisting of Docker daemon, client, API
• Docker Machine - enables Docker to be used on non-Linux machines such as Windows and macOS
• Docker Compose - manage multi-container application; manage multiple containers as one
• Docker Kitematic - Docker GUI
• shell  - preconfigured for a Docker command-line environment
• VirtualBox - lightweight virtualization solution


• References:
• Docker Toolbox Overview

Licensed under a Creative Commons Attribution 4.0 International License.

Docker Client

Docker client

• The Docker client, in the form of the docker binary, is the primary user interface to Docker
• accepts commands and configuration flags from the user and communicates with a Docker daemon

Image: https://docs.docker.com/engine/understanding-docker/

• One client can communicate with multiple local or remote daemons
• Other tools include: docker, docker-machine, docker-compose

Licensed under a Creative Commons Attribution 4.0 International License.

Docker Daemon

Docker daemon

• creates and manages Docker objects, such as images, containers, networks, and data volumes
• subset of the Docker Engine
• background service running on the host that manages building, running and distributing containers
• The Docker client and daemon communicate using a REST API, over UNIX sockets or a network interface

Image: https://docs.docker.com/engine/understanding-docker/

Licensed under a Creative Commons Attribution 4.0 International License.

Docker Engine

Docker Engine

• is a client-server application with these major components:
• A server called a Docker daemon
• A REST API which specifies interfaces for programs to talk to the daemon
• A command line interface (CLI) client interacts with the Docker daemon through scripting or CLI commands.

• Manages (builds, ships and runs) Docker containers deployable on a physical or virtual host, locally, at the datacenter or in the cloud.
• sets up the management environment for containers

Image: https://docs.docker.com/engine/understanding-docker/

• conceptually similar to a hypervisor in that it creates a virtualized environment and facilitates access to system resources

• docker Engine is supported on Linux, Cloud, Windows, and macOS

• Reference:
• Installation instructions: https://docs.docker.com/engine/installation/

Licensed under a Creative Commons Attribution 4.0 International License.

Docker Host

Docker Host

A Docker Host is the server running Docker engine and able to host containers. A Docker Host is a Linux server with Docker installed or a newer model MacOS or Windows server with Docker for Mac or Windows installed. The docker-machine command can be used to create and manage Docker Hosts on older Mac or Windows servers or to create additional Docker Hosts on Linux servers.

• Docker Host runs Docker Engine, which consists of a Docker daemon, a REST API and a set of client CLI tools
• Docker Engine runs natively on Linux systems and can provision multiple Docker hosts locally, on a network, or in the cloud.
• You can use the docker-machine command line tool to manage (create, start, inspect, stop, restart) a Docker host, locally, remotely over the network or in the cloud

• Examples of a Docker Host operating systems:
• Linux system with Docker installed and running
• Supported Mac/Windows OS with Docker for Mac or Docker for Windows installed and running
• Older Mac/Windows OS with Docker Toolbox installed and running


• Reference:
• Docker Machine Overview

Licensed under a Creative Commons Attribution 4.0 International License.