Controller cluster fault handling method, device, controller and controller cluster

Abstract

The embodiment of the present invention provides a controller cluster fault handling method, device, controller and controller cluster, the controller cluster includes: a first controller and 2N+1 second controllers; nodes of the first controller The attribute is a learner, which prohibits the controller from participating in the election and voting of the main controller; the node attribute of the second controller is a voter, allowing the controller to participate in the election and voting of the main controller. The first controller detects whether each second controller fails; if the first controller detects that N+1 second controllers fail, the node attribute of the first controller itself is changed to be a voter. In the case that N+1 second controllers fail, the first controller changes its own node attributes to electors. At this time, there are N+1 controllers whose node attributes are electors, more than half, In the case of a controller failure, the purpose of the controller cluster to provide services normally is achieved.

Description

technical field [0001] The present invention relates to the field of network technology, in particular to a controller cluster fault handling method, device, controller and controller cluster. Background technique [0002] With the development of network controllers and the increasing scale of user networks, a single controller can no longer meet the needs of users, and a single controller has the hidden danger of a single point of failure, which may lead to loss of control of the user network and problems. Therefore, The controller needs to support distributed cluster deployment. In order to meet user needs, the controller cluster supports deployment at multiple different sites. When the controller deployed at a site is unavailable due to catastrophic accidents such as earthquakes, fires, and power outages, it is hoped that the controllers deployed at other sites can Build a cluster normally and continue to provide services to users. [0003] The service function of the c...

AI Technical Summary

Problems solved by technology

However, if N+1 controllers fail, the remaining N controllers do not meet the election conditions for obtaining more than half (that is, N+1) of the votes, so the master controller cannot be elected, and the controller cluster Unable to provide service

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