Data synchronization method and device and server cluster

The invention provides a data synchronization method and device and a server cluster, and relates to the computer technology, and the method comprises the steps: responding to a synchronization data instruction, and generating and sending a data obtaining instruction containing a data extraction condition and a source table to a first server in a first server cluster; and receiving target data sent by the first server, and sending the target data to a preset path in the second server cluster. Sending a data reading instruction to a second server in the second server cluster; if it is determined that the second server finishes reading, an operation instruction corresponding to the operation command line is generated and sent to the second server, so that the second server processes the target data according to the operation instruction, the processed target data is obtained, and the data synchronization operation is completed. According to the method, the data bin table can be flexibly adapted, data in the tab