Help Center/ Distributed Cache Service/ User Guide (Paris Region) / Operation Guide/ Operating DCS Instances/ Performing a Master/Standby Switchover for a DCS Instance
Updated on 2022-02-21 GMT+08:00
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Performing a Master/Standby Switchover for a DCS Instance

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

Only master/standby instances support a master/standby node switchover.

  • During a master/standby node 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.

Prerequisites

The DCS instance for which you want to perform a master/standby node switchover is in the Running state.

Procedure

  1. Log in to the DCS console.
  2. Click in the upper left corner of the management console and select a region and a project.
  3. In the navigation pane, choose Cache Manager.
  4. In the Operation column of the instance, choose More > Master/Standby Switchover.
Parent topic: Operating DCS Instances