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A hybrid approach for homogeneous migration to an Amazon DocumentDB elastic cluster

Database Blog

This article provides a step-by-step guide on migrating a non-sharded MongoDB database to an Amazon DocumentDB elastic cluster using a hybrid approach.

Specifically, the article covers:

  • An overview of Amazon DocumentDB elastic clusters and their benefits for scalability
  • The hybrid migration approach, combining mongodump/mongorestore tools and AWS Database Migration Service (DMS)
  • Prerequisites for the migration, including setting up an EC2 instance, installing database tools, and enabling change streams on the source database
  • Using mongodump to export data from the source MongoDB database
  • Creating sharded collections in the target Amazon DocumentDB elastic cluster
  • Migrating indexes using the Amazon DocumentDB Index Tool
  • Restoring data to the target cluster using mongorestore
  • Setting up and running a parallel CDC task with AWS DMS to replicate ongoing changes
  • Monitoring the migration process and updating the application to use the new cluster
  • Conclusion and cleanup of resources used in the migration
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