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

Abstract

The embodiment of the invention provides a controller cluster fault processing method and device, a controller and a controller cluster. The controller cluster comprises a first controller and 2N + 1second controllers. The node attribute of the first controller is a learner, and the controller is forbidden to participate in election and voting of the main controller; the node attribute of the second controller is an elector, and the controller is allowed to participate in election and voting of the main controller. The first controller detects whether each second controller fails or not; if the first controller detects that the N + 1 second controllers fail, the node attribute of the first controller is changed into an elector. Under the condition that N + 1 second controllers break down,the first controller changes the node attributes of the first controller into electors; at the moment, the node attributes of the N + 1 controllers are the electors and exceed half of the electors, and the purpose that the controller cluster normally provides service under the condition that the controllers break down is achieved.

Description

technical field [0001] The present invention relates to the field of network technologies, and 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 continuous increase in the 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 cause problems due to loss of control of the user network. Therefore, The controller needs to support distributed cluster deployment. To meet user needs, controller clusters can be deployed in multiple different sites. When the controllers deployed at a site are unavailable due to catastrophic accidents such as earthquakes, fires, and power outages, it is hoped that the controllers deployed at other sites can be used. Form a cluster normally and continue to provide services to users. [0003] The service...

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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