12.5.1 Switchover Using the Console

This task requires the following:

• A running DB system with high availability enabled.

Do the following to switchover from the current primary instance to one of the secondary instances:

1. In the MySQL HeatWave Console, select the Resources tab.
2. On the DB Systems tab, in the list of DB Systems, find the high availability DB System for which you want to perform a switchover, and do one of the following:
   1. Click on the row of the DB System to highlight it, and then choose Switchover from the Actions menu.
   2. Click the name of the DB System to open the DB System Details page, and then click the Switchover button.
3. In the Switchover to another Availability Zone panel
   1. Select the Preferred availability zone: This is the availability zone in which the new primary will be located. It will also be the new preferred availability zone for your high availability DB System after the switchover. Your choices include all the availability zones your MySQL instances are now in.
   2. Check the Summary for your Current placement of the primary, Current preferred placement of the primary, New preferred placement of the primary, and Resulting action. Change your selection for the Preferred availability zone if needed.
   3. Click Switchover to start the switchover, or Cancel.

During the switchover, there will be a short period of downtime (that is not the case if the preferred availability zone selected in the same as the current primary's availability zone, which means you are only changing the preferred availability zone and no real switchover takes place). See Switchover on other effects of the switchover process.

Parent topic: Switchover