Shulou(Shulou.com)06/02 Report--

Cloud computing, as the development trend of future network and even future computer industry, has been widely valued. More and more people want to earn high salaries by learning cloud computing. In the process of learning cloud computing, they will come into contact with Docker containers. Why is this? How to learn Docker containers quickly and efficiently, and then learn cloud computing?

Docker is like a shipping container, containing the applications you need. Docker internally uses Linux container technology and provides a complete file system, independent network environment.

The main difference between docker and vm virtual machine is that vm virtual machine needs to make good resources before starting, such as CPU, memory, hard disk, etc., which will take up some useless resources, and vm virtual machine starts slowly. Docker is a process-level application that runs on the host machine. It starts quickly and allocates system resources on demand. It does not occupy useless resources like virtual machines. Docker containers are isolated from each other. Docker has good migration performance, which makes it convenient for operation and maintenance personnel to migrate applications to other hosts without reconfiguring the environment. Docker has its own ecosystem, in which there are applications written by others that can be pulled down directly and used after startup. In short, docker is very easy to use. Docker includes three basic concepts:

Image is equivalent to the software installation package

Container(container) is equivalent to running the application you need in a container (container is also equivalent to a linux system)

Repository is equivalent to the installation package on the app store

Docker is an open source project based on Linux container technology that uses Luinux kernel features such as namespaces and control groups to create containers on the operating system. Docker containers have four advantages:

1) Simple to use: Docker's mantra is: "Build once, run everywhere." It makes it easier for anyone (developers, operations, architects, and others) to take advantage of containers to quickly build and test portable applications.

2) Speed: Docker containers are very lightweight and fast, because containers are just sandbox environments running on the kernel, so they consume fewer resources. You can create a Docker container in seconds compared to virtual machines that may take more time to create.

Docker Hub: Docker Hub has tens of thousands of community-built public images that are readily available. Docker users can benefit from the growing Docker Hub ecosystem, thinking of Docker Hub as an "app store for Docker images."

Modularity and scalability: Docker makes it easy to break down applications into individual containers by function. With Docker, linking these containers together to create your application will be much easier, while individual components can be easily extended and updated in the future.

To get started with Docker container technology, you need to understand Docker container installation and startup, image operations, application deployment, backup and migration. At the same time, Docker container technology is mostly combined with cloud computing. If you want to learn Docker well and find a good job, it is wise to participate in professional cloud computing training classes.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.