Shulou(Shulou.com)06/03 Report--

Today, what the editor shares with you is what linux cluster can be used to do. I believe many people don't know much about linux cluster. In order to let you know more about linux cluster, I summarize the following contents and let's move on. I'm sure you'll get something.

Clustering always involves hardware connections between machines. Linux cluster refers to the work of system administrators when multiple servers run the same AP application. There are three main types of things that a Linux cluster can do:

1. High availability

It runs on two or more nodes in order to continue to provide services in the event of some failure of the system. The design idea is to minimize service outage time.

If the primary node in the high availability cluster fails, the secondary node will replace it during this period of time. The secondary node is usually a mirror of the primary node, so when it replaces the primary node, it can completely take over its identity, thus making the system environment consistent with the user.

two。 Load balancing

The purpose is to provide load capacity proportional to the number of nodes, and this kind of cluster is very suitable for providing Web services with high traffic. Load balancing clusters often have certain characteristics of high availability. The load may be a load that needs to be balanced by the application to handle the load or network traffic load.

Ideal for a large number of users running the same set of applications. Each node can handle part of the load, and the load can be dynamically distributed among the nodes to achieve balance. The same is true for network traffic, usually the network server application accepts too much incoming traffic to process it quickly, so it needs to be sent to the network server running on other nodes. It can also be optimized according to the different available resources or network environment on each node.

3. Super computing

According to the different degree of calculation, it can be divided into two kinds. One is the task slice mode, in which the computing task is divided into task slices, and then the task slices are assigned to each node, and then the results are calculated separately on each node to generate the final calculation result. The other is parallel computing, in which a large number of data are exchanged between nodes in the process of computing, and the calculation with strong coupling can be carried out.

For example, some Linux supercomputers are actually a cluster of computers with the same processing power as real supercomputers.

Mixing and interlacing often occur between these three types of clusters. A high-availability cluster can also balance user load among its nodes while still trying to maintain high availability.

If you are a beginner in Linux, it is not recommended to operate the cluster, you can learn the basics; linux cluster is a more advanced application, if you have a basic grasp of Linux, you can learn.

About what the linux cluster can do is shared here, I hope the above content can have a certain reference value for you, you can learn to apply. If you like this article, you might as well share it for more people to see.

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