Performing a Master/Standby Switchover

On the DCS console, you can manually switch the master and standby nodes of a master/standby or read/write splitting DCS instance. This operation is used for special purposes, for example, releasing all service connections or terminating ongoing service operations.

This operation is not available for cluster instances. To perform a manual switchover for a Proxy Cluster or Redis Cluster instance, go to the Node Management or Shards and Replicas page of the instance. For details, see Managing Nodes.

• During a master/standby switchover, services will be interrupted for up to 10 seconds. Before performing this operation, ensure that your application supports connection re-establishment in case of disconnection.
• During a master/standby node switchover, a large amount of resources will be consumed for data synchronization between the master and standby nodes. You are advised to perform this operation during off-peak hours.
• Data of the maser and standby nodes is synchronized asynchronously. Therefore, a small amount of data that is being operated on during the switchover may be lost.
• The instance IP address does not change after a master/standby switchover, so the client does not need to change the connection address.