MySQL online migration system and method based on mha
A technology for migrating systems and nodes, applied in the field of database management, can solve problems such as difficulty in mass migration of database nodes, inability to perform mass migration, and cumbersome operations, so as to avoid data inconsistencies, ensure data consistency, and operate steps. simple effect
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[0047] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0048] A kind of MHA-based mysql online migration system provided by the present invention, such as figure 1 As shown, it includes three units: MHA management node, mysql master-slave node and new slave node:
[0049] (1) MHA management node
[0050] Including MHA management module, online switching module and updating MHA configuration module, MHA management software package and node software package need to be deployed on this node, when it is necessary to switch the mysql main library, one-click operation can be realized through the MHA management node; when the mysql master-slave node When a change occurs, you need to change the MHA-related configuration to correctly detect the mysql master-slave status.
[0051] (2) mysql master-slave node
[0052] Including online data module and offline library module. From the mysql master...
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