Data migration method and related device

Abstract

The invention discloses a data migration processing method and a related device. The data migration processing method comprises the steps of obtaining a file list of a first slave node needing data migration; then backing up the file list of the first slave node to a backup system; when the migration process is triggered, creating a second slave node for the to-be-migrated data; downloading a filelist of the first slave node from the backup system; and recovering the to-be-migrated data and storing the to-be-migrated data in the second slave node. Therefore, data migration of the master nodeand the slave node under the condition of not stopping service is realized, and the migrated data is processed by the backup system, so that the master node or the upper-layer node cannot be invaded,the risk of data loss is avoided, and the stability of database operation is improved.

Description

technical field [0001] The present application relates to the field of computer technology, in particular to a data migration method and related devices. Background technique [0002] With the rise of Internet websites, traditional relational databases have many insurmountable problems in dealing with ultra-large-scale and high-concurrency social networking services (social networking serivces, SNS) type web 2.0 pure dynamic websites, rather than relational databases. Due to its own characteristics, it has developed very rapidly. Non-relational databases can solve the challenges brought by large-scale data collections. However, as the amount of data increases, the failure rate of database nodes also increases. How to deal with the occurrence of failures become a problem. [0003] Generally, you can stop the database service and select one of the slave databases as the data source; then copy the database source file to the new node; after the copy is completed, start both th...

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Problems solved by technology

[0004]However, in the process of reading and writing large-scale data, stopping the database for data migration will affect the service efficiency of the database on the one hand; on the other hand, stopping the process of the database may cause Only the master node in the replica set can provide services. At this time, the master node is a single point, and there is a serious risk of data loss, which affects the stability of the database operation.

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