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Arbitration server based cluster split-brain prevent method and device

A prevention method and server technology, applied in the direction of data exchange and network interconnection through path configuration, can solve problems such as not allowing the operating system to restart or sharing storage, not having Fencing hardware conditions, and not supporting a non-magnetic array environment, etc. Achieve the effect of providing service consistency and data security, improving resource utilization efficiency, and avoiding cluster split-brain

Active Publication Date: 2014-03-26
GUANGDONG ZHONGXING NEWSTART TECH CO LTD
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Problems solved by technology

However, the inventor found that these methods have limitations. In the actual environment, the hardware conditions for Fencing are often not available, and other important services are also running on the backup node. The customer does not allow the operating system to be restarted or the shared storage to be isolated.
In addition, although the disk lock technology based on the shared disk array can partially solve the cluster split-brain problem in the local area network and the occasion with the shared disk array, it also has many limitations, such as the need to re-partition the shared disk array, and does not support no disk array Environment, does not support virtual machine environment, does not support WAN remote cluster, etc.

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  • Arbitration server based cluster split-brain prevent method and device
  • Arbitration server based cluster split-brain prevent method and device
  • Arbitration server based cluster split-brain prevent method and device

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Embodiment Construction

[0028] The present invention will be clearly and completely described below in conjunction with the accompanying drawings and embodiments. Apparently, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0029] In order to solve the problem that when the cluster heartbeat network is interrupted, it is easy to make wrong strategies due to the inability to effectively judge the status of other nodes and their running services, resulting in a split brain and destroying data consistency. Embodiments of the present invention provide a method and device for effectively preventing split-brain based on an arbitration server without requiring system restart or storage isolation as much as possible.

[0030] The cluster with dual-node...

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Abstract

The invention discloses an arbitration server based cluster split-brain prevent method and device, and belongs to high-availability cluster split-brain prevention technology in the field of computer cluster technology, in order to solve the problem that services cannot be taken over or the services run on two nodes at the same time due to the fact that states of other nodes and running services thereof cannot be accurately distinguished when a cluster heartbeat network is interrupted. The scheme includes that when the heartbeat network is interrupted, cluster nodes not running services can take over the services only by acquiring corresponding service locks through an arbitration server so as to avoid the problem of split-brain; after the services cease, the arbitration server recovers the service locks and allows other cluster nodes to preempt the same again; in the process that multiple nodes preempt one service lock, only one node succeeds in preemption and the services can be started to prevent occurrence of the split-brain.

Description

(1) Technical field [0001] The invention belongs to the technical field of computer clusters, is applicable to high-availability clusters (High-availability Clusters), and particularly relates to the technical field of high-availability cluster split-brain prevention. (2) Background technology [0002] With the rapid development of communication network technology, key fields such as telecommunications, finance, and e-government have higher and higher requirements for server availability. High availability (High Availability, HA) cluster technology can effectively reduce the service downtime of business systems caused by software and hardware failures. [0003] The current high-availability cluster system mainly uses links such as the network or serial lines as a private heartbeat network for communication between cluster nodes, which is responsible for exchanging information between synchronous nodes and monitoring the operation of each node in the cluster. When the servic...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04L12/46
Inventor 蔡强董春青袁泉
Owner GUANGDONG ZHONGXING NEWSTART TECH CO LTD
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