Quorum disk-based non-interrupted operation method for high availability system

An operating method and disk technology, applied in transmission systems, instruments, electrical digital data processing, etc., can solve problems such as cluster response decline and achieve high service efficiency

Active Publication Date: 2012-04-04
CHINA STANDARD SOFTWARE
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Problems solved by technology

In this way, the load of the entire cluster is on one n

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  • Quorum disk-based non-interrupted operation method for high availability system
  • Quorum disk-based non-interrupted operation method for high availability system
  • Quorum disk-based non-interrupted operation method for high availability system

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Embodiment Construction

[0023] In order to make the technology, means and advantages adopted by the present invention, preferred embodiments are given and described in detail below with accompanying drawings, which are for illustration purposes only, and are not limited by specific implementations in patent application.

[0024] The non-stop operation method of the high-availability system based on the quorum disk of the present invention mainly uses the quorum disk to monitor the operation status of each node. When more than half of the nodes in the cluster can be connected and work normally, the quorum disk daemon process only obtains the status of each node. Without making any changes to the cluster state; when the cluster heartbeat is disconnected, and the number of active nodes in any network partition cannot enable the cluster to provide normal services to the outside world, a node is elected based on the information written by each node to the disk. The control node gives it quorum, which bring...

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Abstract

The invention discloses a method for non-interrupted operation of a high availability system through a technology of interacting information by a magnetic disk. For a multi-node high availability cluster system with shared storage equipment, a small space of a shared storage is used as a quorum disk. Various high availability nodes can simultaneously read and write the quorum disk; a quorum disk daemon process of each node writes state information of the node into the quorum disk, and detects stored information of all nodes in the quorum disk, and when nodes fail and network partition occurs, a main control node of the whole cluster is intelligently selected from normally working nodes, so that the cluster system restores a normal working state; therefore, split-brain of the high availability system is avoided and the non-interrupted normal operation of the high availability system is ensured.

Description

technical field [0001] The invention relates to a computer high-availability cluster system, in particular to a technology for information interaction through disks, and a method for enabling the high-availability system to run uninterrupted. Background technique [0002] As a way of improving the availability of processing performed in a computer system, there is an idea called "clustering". Cluster, the English name is Cluster, in layman's terms, a cluster is a technology that connects multiple systems together so that multiple servers can work or look like one machine. The cluster system is usually used to improve the stability of the system and the data processing capability and service capability of the network center. At present, there are two commonly used server cluster methods. One is to connect the backup server to the main server. When the main server fails, the backup server will be put into operation and take over all the tasks on the main server. Another appr...

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Application Information

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IPC IPC(8): G06F3/06G06F15/167H04L29/08
Inventor 兰雨晴王阳利梁昕刘涛张永军刘明姚超夏颖
Owner CHINA STANDARD SOFTWARE
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