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A method and device for managing node devices in a distributed system

A distributed system and node device technology, applied in the computer field, can solve the problems of cluster chaos, abnormal state, and difficulty in providing normal services, and achieve the effect of solving the dual-master problem, avoiding adverse effects, and improving reliability and availability.

Active Publication Date: 2021-09-03
ALIBABA GRP HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if two Masters manage the same node, the state of this node will be abnormal. It is possible that the new Master thinks the node is normal, but the old Master thinks the node is faulty. Eventually, the cluster will be chaotic and it will be difficult to provide normal services.
[0006] The dual master problem has always been a difficulty in distributed systems, however, there is no good way to solve the dual master problem

Method used

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  • A method and device for managing node devices in a distributed system
  • A method and device for managing node devices in a distributed system
  • A method and device for managing node devices in a distributed system

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Embodiment Construction

[0027] The application will be described in further detail below in conjunction with the accompanying drawings.

[0028] In a typical configuration of the present application, the terminal, the device serving the network and the trusted party all include one or more processors (CPUs), input / output interfaces, network interfaces and memory.

[0029] Memory may include non-permanent storage in computer readable media, in the form of random access memory (RAM) and / or nonvolatile memory such as read only memory (ROM) or flash RAM. Memory is an example of computer readable media.

[0030] Computer-readable media, including both permanent and non-permanent, removable and non-removable media, can be implemented by any method or technology for storage of information. Information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random acce...

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Abstract

The purpose of this application is to provide a method and device for managing node devices in a distributed system. Compared with the prior art, the control device of the present application records the time stamp information of the control device as the master control device in the distributed system, and the heartbeat packet sent by the control device to the corresponding node device includes the time stamp information; the present application The node device receives the heartbeat packet sent by the corresponding control device in the distributed system, and processes the heartbeat packet by comparing the timestamp information in the heartbeat packet with the current timestamp information recorded by the node device; The time stamp information is added to the heartbeat packet sent by the control device as the master device to the node device, so that the node device rejects the heartbeat packet sent by the original master device after the master-standby switchover, thereby simply solving the problem of dual-master problems and improve system reliability and availability.

Description

technical field [0001] The present application relates to the computer field, and in particular to a technology for managing node devices in a distributed system. Background technique [0002] Generally, a distributed system will have a master control device (Master) in the control center. In order to ensure the high availability of the Master, a backup control device (Slave) will be designed as the backup library of the Master. If the Master is abnormal, it will switch to the Slave. At this time, the Slave It will become the new master, but if the old master is running normally again, there will be two masters, that is, the dual-master problem. [0003] The possible consequences of the dual master problem are: [0004] 1) Double write. Because of the emergence of two Masters, both Masters may write data to the cluster nodes, which eventually leads to inconsistent data on the nodes. [0005] 2) Node dual management. Both Masters will manage the nodes, and there is no pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/26H04L29/08
CPCH04L41/042H04L43/106H04L67/10
Inventor 范孝剑张广舟林晓斌
Owner ALIBABA GRP HLDG LTD