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Difference: 1. Docker is an open source application container engine and a deployment tool for the running environment; while Vagrant is a deployment tool for the development environment. 2. Docker is suitable for managing application environments, while Vagrant is suitable for managing virtual machines.
The operating environment of this tutorial: linux5.9.8 system, docker-1.13.1 version, Dell G3 computer.
Introduction to Docker
Docker application scenarios
Advantages of Docker
Simplify the process:
Docker allows developers to package their applications and dependencies into one Virtualization can be achieved by publishing to any popular Linux machine in a portable container.
Docker has changed the way of virtualization, allowing developers to directly put their results into Docker for management.
Convenience and speed are already the biggest advantages of Docker. Tasks that used to take days or even weeks can be completed in just a few seconds under the processing of Docker containers.
Avoid choice phobia:
If you have choice phobia, be a veteran patient. Docker helps you package your troubles!
The Docker image contains the running environment and configuration, so Docker can simplify the deployment of multiple application instances. For example, web applications, background applications, database applications, big data applications such as Hadoop clusters, message queues, etc. can be packaged into a mirror for deployment.
Saving expenses:
The advent of the cloud computing era frees developers from the need to configure expensive hardware in order to pursue effects. Docker has changed the mindset that high performance must be high price.
The combination of Docker and the cloud allows the cloud space to be more fully utilized. It not only solves the problem of hardware management, but also changes the way of virtualization.
Vagrant Introduction
Vagrant is a lightweight, highly reusable and portable Development environment tools.
It can be simply understood that Vagrant abandons all the troublesome settings in the development environment, but replaces it with a single configuration file, and can selectively retain the required features.
Vagrant uses Oracle's open source VirtualBox virtualization system by default and uses Chef to create an automated virtual environment.
Functional features of Vagrant
Vagrant is based on Virtualbox’s virtual machine to build your development environment, while Docker is based on LXC (LXC) lightweight container virtualization technology.
Vagrant is the deployment tool for your development environment; and docker is the deployment tool for your running environment.
Vagrant is suitable for managing virtual machines, while docker is suitable for managing application environments.
Recommended learning: "docker video tutorial"
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