Disaster recovery method and system

A backup server and client technology, applied in the field of network communication, can solve the problems of inflexible disaster recovery methods, failure of mutual disaster recovery between server and client, etc.

CN103560922AInactive Publication Date: 2014-02-05BEIJING TELIXIN ELECTRONICS TECH +1

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: BEIJING TELIXIN ELECTRONICS TECH
Publication Date: 2014-02-05
Estimated Expiration: Not applicable · inactive patent

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Abstract

The invention discloses a disaster recovery method and system. The method comprises the steps that a main client side and / or a standby client side send / sends heartbeat detection information to a DNS main server at regular time; if the main client side and / or the standby client side sending the heartbeat detection information does not receive the heartbeat responses of the DNS main server in the preset time, the DNS main server is judged to be in the abnormal state; According to a prestored usable DNS standby server list, the main client side and / or the standby client side sending the heartbeat detection information selects a DNS standby server with the high priority, and sends service requests to the selected DNS standby server, and therefore the selected DNS standby server replaces the DNS main server which is in the abnormal state to work. According to the disaster recovery method and system, the main client side and / or the standby client side can be used for judging whether the DNS main server is in the normal state or not, the standby DNS standby server is started when the DNS main server is in the abnormal state, and mutual disaster recovery among the DNS main server, the DNS standby server, the main client side and the standby client side is achieved.

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Description

Technical field

[0001] The present invention relates to the field of network communication, in particular to a disaster tolerance method and system. Background technique

[0002] During the processing of the network equipment (such as the interaction between the server and the client), due to various reasons, the network equipment may malfunction and cannot provide services normally. Therefore, it is necessary to add backup equipment to the network equipment for disaster recovery. In the existing disaster recovery method, if it is necessary to add a disaster recovery function to a server (such as a DNS server), an additional backup DNS server needs to be designed, that is, one DNS server is used for current operation and one DNS server is used for backup. After the running DNS server fails, start the backup DNS server through a certain strategy; if you need to add disaster tolerance to the client, you need to design an additional backup client, that is, one client is used for the...

Claims

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