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Method and apparatus for indicating node alive in a cluster

A clustering and indicating technology, applied in the direction of transmission system, electrical components, etc.

Active Publication Date: 2016-12-14
EMC IP HLDG CO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At this time, the system must design a very complex algorithm to track the survival of the master node

Method used

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  • Method and apparatus for indicating node alive in a cluster
  • Method and apparatus for indicating node alive in a cluster
  • Method and apparatus for indicating node alive in a cluster

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Embodiment Construction

[0021] The principle and spirit of the present invention will be described below with reference to several exemplary embodiments shown in the accompanying drawings. It should be understood that these embodiments are given only to enable those skilled in the art to better understand and implement the present invention, rather than to limit the scope of the present invention in any way.

[0022] Note that the term "node" used herein may represent a physical computing device (for example, a computer), and may also represent a virtual machine or application, process or thread. Moreover, the term "master node" used here may refer to a master node in a cluster that is responsible for controlling the operation of the cluster, or may refer to a node that currently has the right to use mutually exclusive shared resources, and so on. Correspondingly, the term "slave node" can refer to a node in a subordinate position in a cluster, or a node waiting to use a mutually exclusive shared res...

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Abstract

Embodiments of the invention relate to methods and apparatus for indicating node aliveness in a cluster. In particular, a method is disclosed for indicating the survival of the master node at the master node in the cluster to at least one slave node of the cluster, the master node and the at least one slave node complying with the Small Computer System Interface SCSI protocol, the method comprising: creating a persistent reservation for a shared resource of the cluster; and updating a generation indication of the cluster by periodically changing a state of the persistent reservation, wherein the generation indication is available to at least one slave node by accessing the shared resource. Also disclosed is a method for detecting whether a master node in a cluster is alive at a slave node in the cluster, comprising: registering with a shared resource of the cluster; periodically accessing the shared resource to obtain a generation indication of the cluster; The previously obtained generation indicator is updated to detect whether the master node is alive. A corresponding device is also disclosed.

Description

technical field [0001] Embodiments of the present invention generally relate to the field of distributed information processing, and more particularly, to a method and device for indicating node survival in a cluster. Background technique [0002] With the development of computing technology, cluster has become an important modern computing architecture. In a cluster, usually a specific node in the system (which may be a device, or an application program, etc.) is required to indicate its aliveness to other nodes, that is, the node is currently in an operational state or an effective working state. For example, in a cluster composed of multiple nodes, there is usually one or more nodes serving as the master node of the cluster, which is responsible for controlling the behavior of the cluster and other member nodes, for example. Such a master node needs to constantly indicate its aliveness to other nodes in the cluster (called "slave nodes"). If the master node does not ind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08
Inventor 吴江黄剑李卫华
Owner EMC IP HLDG CO LLC