You can configure an instance to run backup operations from a standby server.
Note
During backups on a MySQL standby server, by default, both data and log backups run. To run a transaction log backup, enable the --log-slave-updates parameter on the standby server.
Procedure
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From the navigation pane, go to Protect > Databases.
The database Overview tab appears.
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On the Instances tab, click the instance for which you want to run transaction log backup operations on the source computer.
The instance Overview page appears.
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In the General tile, click Edit.
The Edit MySQL instance dialog box appears.
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Under the Advanced options section, move the Use standby instance for backup toggle to right, and then select a standby instance from the Standby instance list.
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Click Update.