Migrating data from Yandex Managed Service for PostgreSQL to Yandex Managed Service for OpenSearch using Yandex Data Transfer

You can migrate a database from Yandex Managed Service for PostgreSQL to Yandex Managed Service for OpenSearch using Yandex Data Transfer. To do this:

1. Set up your transfer.
2. Test the transfer.

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

Required paid resourcesRequired paid resources

The support cost includes:

• Managed Service for PostgreSQL cluster fee: Using computing resources allocated to hosts and disk space (see Managed Service for PostgreSQL pricing).
• Managed Service for OpenSearch cluster fee: Using computing resources allocated to hosts (including hosts with the MANAGER role) and disk space (see Managed Service for OpenSearch pricing).
• Fee for using public IP addresses for cluster hosts (see Virtual Private Cloud pricing).
• Per-transfer fee: Using computing resources and the number of transferred data rows (see Data Transfer pricing).

Getting startedGetting started

Set up your infrastructure:

Set up your transferSet up your transfer

1. Connect to the Managed Service for PostgreSQL cluster, create a table named x_tab in the db1 database and populate it with data:

   CREATE TABLE x_tab
   (
       id NUMERIC PRIMARY KEY,
       name CHAR(5)
   );
   INSERT INTO x_tab (id, name) VALUES
     (40, 'User1'),
     (41, 'User2'),
     (42, 'User3'),
     (43, 'User4'),
     (44, 'User5');
   

2. Create a target endpoint with the following parameters:

   • Connection type: Managed Service for OpenSearch cluster.
   • Managed Service for OpenSearch cluster: Select a Managed Service for OpenSearch cluster from the list.
   • User: admin.
   • Password: <user_password>.

3. Create a source endpoint and transfer:

   Manually

   Terraform

   1. Create a source endpoint of the PostgreSQL type and specify the cluster connection parameters in it:

      • Installation type: Managed Service for PostgreSQL cluster.
      • Managed Service for PostgreSQL cluster: <PostgreSQL_source_cluster_name> 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 created endpoints.

   3. Activate the transfer.

   1. In the postgresql-to-opensearch.tf file, specify the values of the following variables:

      • target_endpoint_id: Target endpoint ID.
      • transfer_enabled: 1 to create a transfer.

   2. Make sure the Terraform configuration files are correct using this command:

      terraform validate
      

      If there are any errors in the configuration files, Terraform will point them out.

   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.

      Once created, your transfer will be activated automatically.

Test the transferTest the transfer

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

2. Connect to the target cluster using OpenSearch Dashboards.

3. Select the Global tenant.

4. Create a new index template named public.x_tab:

   1. Open the control panel by clicking .
   2. Under Management, select Stack Management.
   3. Go to the Index Patterns section and click Create index pattern.
   4. In the Index pattern name field, specify public.x_tab and click Next step.
   5. Click Create index pattern.

5. Open the control panel by clicking .

6. Under OpenSearch Dashboards, select Discover.

7. The dashboard that opens should contain data from the Managed Service for PostgreSQL database.

Delete the resources you createdDelete the resources you created

Some resources are not free of charge. To avoid paying for them, delete the resources you no longer need:

Delete the target endpoint.

Delete the other resources depending on how they were created: