![]() You can use the pg_dump and pg_restore client applications to create a data export file and then load it into your new database. Though we used AWS DMS in this lesson, there are other options to migrate PostgreSQL databases as well. After you have switched to using your primary database and are confident in the results, you may want to delete your AWS DMS infrastructure. Whichever method you choose, you should thoroughly test your new database before making it your primary database. Additionally, you can use the validation feature in AWS DMS to compare the source and target records. This allows you to compare the results from each database for accuracy while still maintaining the correct data in your existing database. If you want to follow a more cautious approach, you can read from and write to both databases for a period of time. ![]() This ensures all reads and writes go to your new database. If you feel confident about your migration, you can change the database configuration in your application to use your new database.When your initial migration is complete and all data is synced to your new database, you are ready to use your new database as your primary database. Note that this requires you to have logical replication enabled on your source database. The first type copies all data in your database, and the second type ensures that all additional updates are replicated to your new database until you switch your application to use the new database.įor the migration type, choose Migrate existing data and replicate ongoing changes. If you are migrating your application from using a self-managed database to using a fully managed database, you want to use both types. Replicate ongoing changes, which copies all ongoing operations from your source database to your target database. Migrate existing data, which performs a one-time process to copy data from your source database to your target database.Ģ. Then choose the source endpoint for your existing database and your target endpoint for your fully managed database in Amazon RDS. Give your task a name, and choose the replication instance you created in an earlier module. ![]() In the Task configuration section, set up the parameters of your replication task. ![]() You should avoid making your replication instance publicly accessible in most cases to avoid potential security issues. If your existing database is not in the same VPC, you should use AWS Direct Connect or a VPN to allow connection from your VPC to your existing data center. If your existing database is in the same VPC as your new database and your replication instance, you don't need your replication instance to be publicly accessible. If you are performing a one-time migration of your data from an existing database to a fully managed database in Amazon RDS, you likely don't need a Multi-AZ setup.įinally, choose whether your replication instance should be publicly accessible. If you will use AWS DMS to keep two databases in sync over a long period of time, you may want to use a Multi-AZ setup. You may choose to have a Multi-AZ setup for your replication instance for redundancy. Choose the same VPC in which you provisioned your Amazon RDS database to ease network access for the replication instance. As you continue in the Replication instance configuration section, you need to choose a VPC for your replication instance. ![]()
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