Can docker containers change the world?

Can docker containers change the world?2016-01-15 Du Yishu

2016 years, a lot of Daniel began to predict the trend of technology, one of the general views I also agree:

Docker will be more popular and will change the world of programs

In the first half of 2015 I contacted Docker, I was familiar with a little shock feeling, too convenient, can solve a lot of problems

Container is usually translated as a container, but there is another meaning, "container"

Container is one of the greatest inventions of the 21st century, it changed the world freight transport system, created a highly automated, standardized, low-cost logistics system, promote the economic globalization of development

The same box appears in the programming world, which is the Docker container

Key features of Docker

Docker is an open-source application container engine, due to its lightweight virtualization technology based on LXC, the most obvious feature of traditional virtual machine technology, such as KVM, is to start fast, save resources, start a container only a few seconds, on a normal PC can even launch hundreds of containers, This is hard to do with traditional virtual machine technology.

The main issues that Docker solves

(1) environmental dependence

For example, Java's web development deployment environment needs to specify JDK version, Web server and its version, various jar packages and their versions, etc.

Docker is a container that can be put into a specific version of the operating system, then install all the required environments, then you can put this container in any location

Whether it is on the development server, the test server, the operating server, the environment is the same, does not appear because of environmental inconsistencies caused by the trouble

Without Docker, it may be necessary to deploy the environment separately on different servers, which is likely to cause environmental differences.

(2) Large- scale rapid deployment

The server is like a ship, Docker is a container.

If you want to deploy to 100 servers, then you just need to copy the containers to these servers, the number of containers on each ship is free, as long as you can put down the line

Without Docker, you need to build the environment on each server, not too fast.

(3) isolating the effects between applications

Each container is completely independent and does not have any effect on each other.

For example, put mysql5.5 into a container, put mysql5.6 into a container, the two containers into a server at the same time, they can run at the same time, there is no interaction between each other, because each locked in a different box

Docker has been widely used, it can not change the program world, I believe it will not take long to see the results

Can docker containers change the world?