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Split brain preventing method for highly available cluster system

A cluster system and prevention method technology, applied in transmission systems, digital transmission systems, error prevention and other directions, can solve problems such as misidentification of the main node running normally and standby node, data damage, split-brain and other problems

Active Publication Date: 2008-10-22
GUANGDONG ZHONGXING NEWSTART TECH CO LTD
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Problems solved by technology

However, when the connection between two nodes fails, the master node may run normally but be mistaken for a failure by the standby node, which will cause the two nodes to read and write the storage device at the same time, and the data will be destroyed. This situation is called split brain

Method used

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  • Split brain preventing method for highly available cluster system

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Embodiment Construction

[0017] The present invention is mainly aimed at a dual-machine high-availability cluster system, which can be easily implemented on various platforms. After multiple implementations and tests by the inventor, the present invention can effectively prevent the occurrence of split-brain.

[0018] Figure 1 shows a representative topological diagram of a dual-machine high-availability cluster system. The system has two nodes, server nodes A and B. Each server has four network cards eth0-eth3. eth0 and eth1 are set to bond and adopt hot standby mode, where eth0 is used as Active and connected to switch A, and eth1 is used as Backup and connected to switch B. By setting external service management, a public network card IP (public IP) address is generated as a working link. eth2 and eth3 are connected to the network card corresponding to another node through a crossover network cable, and the two nodes are connected to their first serial ports through a serial cable. These connectio...

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Abstract

The invention provides two methods for preventing a brain from splitting of a cluster system. The first method is as follows: whether the brain is split is judged by detecting whether last two heartbeat cables are cut at the same time. The second method is as follows: whether the service is started at a node of the other side is judged by a ping floating IP method, thereby preventing the brain from splitting. The two methods can effectively avoid the brain splitting problem of the dual-computer high-useable cluster system, ensure that data is not damaged, and have the advantage that the support of any other hardware is not needed.

Description

technical field [0001] The invention belongs to the technical field of computer clusters, and in particular relates to two methods for preventing the split-brain problem of cluster systems, so as to ensure the high reliability of the system. Background technique [0002] With the rapid development of communication network technology, key areas such as telecommunications, finance, and e-government have higher and higher requirements for server availability. Stopping service due to server failure will cause huge losses. Using a high-availability cluster system can greatly improve The availability of the system minimizes the impact of failures caused by software, hardware, and human beings on the business. [0003] The dual-machine high-availability cluster system consists of two servers called nodes connected through the network (or other connection methods such as serial ports). Among these two servers A and B, A is the working machine, and B is the backup machine, and they ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L1/22H04L12/26H04L1/00H04B1/74
Inventor 蔡强梁晓君罗锦华邹晟周晶颜定成邵济平
Owner GUANGDONG ZHONGXING NEWSTART TECH CO LTD
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