Transferring data from Yandex Object Storage using Yandex Data Transfer

You can migrate data from Yandex Object Storage to the Managed Service for PostgreSQL table using Data Transfer. To do this:

1. Prepare your test data.
2. Set up the transfer.
3. Activate the 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 PostgreSQL cluster: Computing resources allocated to hosts, storage and backup size (see Managed Service for PostgreSQL pricing).
• Public IP addresses if public access is enabled for cluster hosts (see Virtual Private Cloud pricing).

Getting startedGetting started

Set up your infrastructure:

Prepare your test dataPrepare your test data

1. On your local machine, create the demo_data.csv file and fill it with test data:

   1,Anna
   2,Robert
   3,Umar
   4,Algul
   5,Viktor
   

2. Upload your prepared file to the Object Storage bucket.

Set up the transferSet up the transfer

1. Create a source endpoint of the Object Storage type with the following settings:

   • Database type: Object Storage.

   • Bucket: Object Storage bucket name.

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

   • Secret Access Key: Service account’s secret access key. If you created your infrastructure using Terraform, copy the key’s value from the Yandex Lockbox secret.

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

   • Region: ru-central1.

   • Data format: CSV.

   • Delimiter: Comma (,).

   • Table: Name of the CSV file in the bucket, e.g., demo_data.csv.

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

     • Id: Int64
     • Name: UTF8

   Keep the default values for all other settings.

2. Create a target endpoint and set up the transfer:

   Manually

   Terraform

   1. Create a PostgreSQL-type target endpoint and specify its cluster connection settings:

      • Installation type: Managed Service for PostgreSQL cluster.
      • Managed Service for PostgreSQL cluster: Select the name of the PostgreSQL source cluster from the drop-down list.
      • Database: db1.
      • User: pg-user.
      • Password — <user_password>.

   2. Create a transfer of the Snapshot-type that will use the endpoints you created.

   1. In the objstorage-to-postgres.tf file, specify the following variables:

      • source_endpoint_id: Source endpoint ID.
      • transfer_enabled: Set to 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:

      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.

Activate the transferActivate the transfer

1. Activate the transfer and wait for its status to change to Completed.

2. Connect to the database in the target Managed Service for PostgreSQL cluster.

3. Run this request:

   SELECT * FROM public."demo_data.csv";
   

   Response example

    __file_name  | __row_index | Id |  Name  
   --------------+-------------+----+--------
   demo_data.csv |           1 |  1 | Anna
   demo_data.csv |           2 |  2 | Robert
   demo_data.csv |           3 |  3 | Umar
   demo_data.csv |           4 |  4 | Algul
   demo_data.csv |           5 |  5 | Viktor
   

Data successfully migrated.

Delete the resources you createdDelete the resources you created

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

1. Delete the transfer.

2. Delete the source endpoint.

3. Delete the objects from the bucket.

4. Delete the other resources depending on how you created them:

   Manually

   Terraform

   1. Delete the target endpoint.
   2. Delete the Managed Service for PostgreSQL cluster.
   3. Delete the Object Storage bucket.

   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.