What is docker based on as the engine?

Docker is based on "LXC" as the engine. Docker is an advanced container engine based on LXC. The source code is hosted on Github. It is open source based on the Go language and complies with the Apache2.0 protocol. Using docke can achieve more lightweight virtualization and facilitate rapid deployment.

The operating environment of this tutorial: linux5.9.8 system, docker-1.13.1 version, Dell G3 computer.

Docker is an open source application container engine that allows developers to package their applications and dependencies into a portable image, and then publish it to any popular Linux or Windows operating system machine, as well as Virtualization can be achieved. Containers completely use the sandbox mechanism and will not have any interfaces with each other.

Docker is an advanced container engine based on LXC open sourced by the PaaS provider dotCloud. The source code is hosted on Github. It is open source based on the go language and complies with the Apache2.0 protocol.

Docker has been very popular since 2013, whether it is from the code activity on github or Redhat integrating support for Docker in RHEL6.5. Even Google’s Compute Engine also supports docker. run on top of it.

Whether an open source software can be commercially successful depends largely on three things - a successful user case (use case), an active community and a good story. The PaaS product of dotCloud House is built on docker. It has been maintained for a long time and has a large number of users. The community is also very active. Next, let's take a look at the story of docker.

• Environment management is complex - from various OSs to various middlewares to various apps, there are too many things that developers need to care about for a product to be successful, and it is difficult to manage. Problems need to be faced in almost all modern IT-related industries.

• The arrival of the cloud computing era - the success of AWS has guided developers to move applications to the cloud, solving the problem of hardware management. However, problems related to middleware still exist (so openstack HEAT and AWS cloudformation both work to solve this problem). Changes in developer thinking provide possibilities.

• Changes in virtualization methods - In the cloud era, standard hardware is used to reduce costs, and virtualization methods are used to meet users' on-demand needs and ensure availability and isolation. However, from the perspective of docker, both KVM and

##LXC mobility - LXC already exists in the Linux 2.6 kernel, but it was not originally designed for cloud computing. It lacks standardized description methods and container portability, so it was decided The environment it creates is difficult to migrate and standardize management (compared to the concepts of image and snapshot such as KVM). Docker has made substantial innovations on this issue. This is the most unique thing about docker.

#What changes will docker bring to server-side development/deployment?

Achieve lighter weight virtualization to facilitate rapid deployment
It can greatly reduce the deployment time Time cost and labor cost
Recommended study: "

docker video tutorial

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