Shulou(Shulou.com)06/01 Report--

This article mainly explains "what are the advantages of docker cluster". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn "what are the advantages of docker clusters?"

A single docker can deploy multiple identical service instances to complete the cluster of redis, mysql, tomcat, etc. However, due to the hardware limitations of its own host, such a cluster is actually the same as the provisionable resources of redis, mysql, tomcat of a single service.

In order to break through the limitation of hardware and achieve scalable capacity, it is necessary to carry out docker cluster. Each docker generally starts only one service instance, and then clusters the service instances through the docker of multiple hosts. After docker clustering, commands can be executed uniformly in the cluster manager directly, thus avoiding the need for each docker instance to enter the same command.

Generally speaking, the isolation of processes by docker containers is mainly realized by two technical points: Namespace technology and Cgroups technology.

Namespace technology can only change the visual range of the process group, and can not really limit the resources. In order to prevent containers (processes) from robbing each other for resources, or even if a container uses up all the host resources, other containers will also fail. Therefore, Cgroup technology must be used to limit the resources of the container.

Container services provide an elegant solution for finding requirements for large-scale design and deployment of applications. While Docker provides actual container technology, many other projects are helping to develop the guidance and communication tools needed in the deployment environment. Docker achieves complete consistency between local and cloud environments, enabling a real development to run everywhere.

Container technology can improve repeatability across processes, make it easier for developers and operators to work, and ultimately drive business value. It's easier to grow quickly, and it takes less work to use Docker.

At this point, I believe you have a deeper understanding of "what are the advantages of docker cluster". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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.