Migrating data from Object Storage to Yandex Managed Service for MySQL® using Yandex Data Transfer

Data Transfer enables you to transfer data from Object Storage to a Managed Service for MySQL® target cluster.

To transfer data:

1. Prepare your test data.
2. Set up and activate the transfer.
3. Test your transfer.

If you no longer need the resources you created, delete them.

Required paid resourcesRequired paid resources

• Object Storage bucket: Use of storage, data operations (see Object Storage pricing).
• Managed Service for MySQL® cluster: Computing resources allocated to hosts, storage and backup size (see Managed Service for MySQL® pricing).
• Public IP addresses if public access is enabled for cluster hosts (see Virtual Private Cloud pricing).

Getting startedGetting started

Set up the infrastructure:

Prepare your test dataPrepare your test data

1. On your local machine, create a data.csv text file and fill it with test data. In our example, we will use readings from car sensors:

   1;99101;2022-06-05 17:27:00;55.70329032;37.65472196;427.5;52.3;23.5;17.;52.
   2;95106;2022-06-06 09:49:54;55.71294467;37.66542005;429.13;55.5;21.;18.;32.
   3;117890;2023-06-07 06:21:29;55.71294467;37.66542005;429.13;56.2;20.;18.7;45.
   4;99101;2022-06-07 08:15:32;55.29194467;37.66542005;429.13;59.1;21.;18.;20.
   

2. Upload the file to the Object Storage bucket you created earlier.

Set up and activate the transferSet up and activate the transfer

1. Create a source endpoint with the following settings:

   • Database type: Object Storage.

   • Bucket: Object Storage bucket name.

   • Access Key ID: Public part of the service account static key. If you created your infrastructure using Terraform, copy the key value from the Yandex Lockbox secret.

   • Secret Access Key: Private part of the service account’s static key. If you created your infrastructure using Terraform, copy the key value from the Yandex Lockbox secret.

   • Endpoint: https://storage.yandexcloud.net.

   • Region: ru-central1.

   • Data format: CSV.

   • Delimiter: Semicolon (;).

   • Table: measurements.

   • Add system columns: Disable this option.

   • Result table schema: Select Manual and specify the following field names and data types:

     • id: INT64, Key property

     • device_id: INT32

     • datetime: DATETIME

       Note

       The target endpoint writes DATETIME type data in the UTC+0 time zone.

     • latitude: DOUBLE

     • longitude: DOUBLE

     • altitude: DOUBLE

     • speed: DOUBLE

     • battery_voltage: DOUBLE

     • cabin_temperature: DOUBLE

     • fuel_level: DOUBLE

   Keep the default values for all other settings.

2. Create a target endpoint and transfer:

   Manually

   Terraform

   1. Create a target endpoint:

      • Database type: MySQL

      • Endpoint parameters:

        • Connection settings:

          • Connection type: Managed Service for MySQL cluster

            Select your source cluster from the list and specify its connection settings.

   2. Create a Snapshot and replication-type transfer configured to use the new endpoints.

   3. Activate the transfer.

   1. In the data-transfer-objs-mmy.tf file, specify the following variables:

      • source_endpoint_id: ID of the source endpoint.
      • transfer_enabled: 1 to create a transfer.

   2. Validate your Terraform configuration files using this command:

      terraform validate
      

      Terraform will display any configuration errors detected in your files.

   3. Create the required infrastructure for the transfer:

      1. Run this command to view the planned changes:

         terraform plan
         

         If you described the configuration correctly, the terminal will display a list of the resources to update and their parameters. This is a verification step that does not apply changes to your resources.

      2. If everything looks correct, apply the changes:

         1. Run this command:

            terraform apply
            

         2. Confirm updating the resources.

         3. Wait for the operation to complete.

      Once created, your transfer will be activated automatically.

Test the transferTest the transfer

1. Wait for the transfer status to change to Replicating.

2. Connect to the Managed Service for MySQL® target cluster database.

3. To make sure the data was successfully transferred, run this query:

   SELECT * FROM db1.measurements;
   

   Response example

    id | device_id |     datetime        |  latitude | longitude | altitude | speed | battery_voltage | cabin_temperature | fuel_level
   ----------------+---------------------+-----------+-----------+----------+-------+-----------------+-------------------+----------+
     1 |     99101 | 2022-06-05T17:27:00 | 55.703289 |  37.66542 |   427.50 | 52.29 |            23.5 |              17.0 |     52.0 |
     2 |     95106 | 2022-06-06T09:49:54 | 55.712944 |  37.66542 |   429.13 | 55.50 |            21.0 |              18.0 |     32.0 |
     3 |    117890 | 2023-06-07T06:21:29 | 55.712944 |  37.66542 |   429.13 | 56.20 |            20.0 |              18.7 |     45.0 |
     4 |     99101 | 2022-06-05 17:27:00 | 55.291944 |  37.66542 |   429.13 | 59.09 |            21.0 |              18.0 |     20.0 |
   

4. Create a text file named data2.csv with the new data:

   7;95106;2022-06-07 09:54:32;47.71294467;37.66542005;429.13;62.2;21.;20.4;27.
   9;117890;2022-06-07 11:56:27;52.71294467;37.66542005;429.13;65.5;19.;19.;38.
   10;117890;2022-06-07 12:36:27;57.71294467;37.66542005;429.13;72.1;19.;20.;25.
   11;99101;2022-06-07 15:22:27;59.71294467;37.66542005;429.13;35.5;19.;18.;12.
   

5. Upload the file to the Object Storage bucket for transfer.

6. Make sure the db1.measurements table now contains the new data.

Delete the resources you createdDelete the resources you created

To reduce the consumption of resources you do not need, delete them:

1. Delete the transfer.

2. Delete the target endpoint.

3. Delete other resources using the same method used for their creation:

   Manually

   Terraform

   1. Delete the source endpoint.

   2. Delete the Object Storage bucket.

   3. Delete the Managed Service for MySQL® cluster.

   4. If you have created a service account when creating the target endpoint, delete it.

   1. In the terminal window, go to the directory containing the infrastructure plan.

      Warning

      Make sure the directory has no Terraform manifests with the resources you want to keep. Terraform deletes all resources that were created using the manifests in the current directory.

   2. Delete resources:

      1. Run this command:

         terraform destroy
         

      2. Confirm deleting the resources and wait for the operation to complete.

      All the resources described in the Terraform manifests will be deleted.