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 the transfer.
2. Test the transfer.

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

Getting startedGetting started

Prepare the infrastructure:

Set up the transferSet up the 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 the 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 the command to view planned changes:

         terraform plan
         

         If the resource configuration descriptions are correct, the terminal will display a list of the resources to modify and their parameters. This is a test step. No resources are updated.

      2. If you are happy with the planned changes, apply them:

         1. Run the command:

            terraform apply
            

         2. Confirm the update of 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: