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Importing from Object Storage to Replica

Use the loadDump utility to import the source data and users from an Object Storage bucket to a replica.

Using MySQL Shell

Use MySQL Shell to import the source data and users.

This task requires the following:
  • You have read and implemented the prerequisites. See Replica Configuration.
  • MySQL Shell 8.0.27 or higher version. It is recommended to use the latest version of MySQL Shell. Any earlier versions of MySQL Shell cannot import the exports created by MySQL Shell 8.0.27 or higher version.
  • Access to Object Storage and an existing bucket that contains the exported files.
  • A valid configuration file. If you have installed and configured the CLI in the default location, you have a valid configuration file. If you have not installed and configured the CLI, you must either install it or create a configuration file manually. See SDK and CLI Configuration File.
  • Your replica has enough storage space for the import.
  • A replica running with local-infile=ON. You require the parameter for importing the source dump. You can disable the parameter after the import. If you disable the parameter, restart the replica.See local_infile.
    Note

    If you are importing to a DB system replica, this parameter is enabled by default. To disable it, create a copy of your configuration, set local-infile=OFF, and replace your existing configuration.
Do the following to import the source data and users to the replica:
  1. In MySQL Shell, connect to the replica, and run the following command in the JS execution mode:
    util.loadDump("prefix", {osBucketName: "bucket", threads: n, 
    loadUsers: true, updateGtidSet: "append"})
    • util.loadDump: Import data from the specified Object Storage bucket to MySQL DB system.
    • prefix: (Optional) If the data is uploaded to Object Storage with a prefix, specify that prefix in the import command. See Overview of Exporting and Importing.
    • osBucketName: Specify the name of the Object Storage bucket to import from.
    • threads: Specify the number of processing threads to use for this task. The default value is 4. It is recommended to set this parameter to the number of CPU cores available on the local database server or twice the number of OCPUs used by the target MySQL DB system.
    • loadUsers: true: Load the users defined in the source instance.
    • updateGtidSet: "append": Apply the gtid_executed GTID set from the source, as recorded in the dump metadata, to the gtid_purged GTID set on the replica. See MySQL Shell Dump Loading Utility.
The source data is imported to the replica.

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