Tag: AWS

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MongoDB: Migrating from MongoDB on EC2 to Atlas

Unknown's avatar on June 21, 2017

Atlas was introduced by MongoDB as their SAAS offering for MongoDB.  Atlas allows administrators, developers, and managers to deploy a complete MongoDB cluster in a matter of minutes.  Some basic requirements for using Atlas include:

  • Atlas requires SSL
  • Set up AWS VPC peering
  • VPN and Security Setup
  • Use Amazon DNS (when on AWS)

The preparation work that must be done includes:

  • Picking a network CIDR that won’t collide with your networks
  • Need to use MongoDB 3.x engine using WiredTiger
  • Test on replicas using testing/staging environments

Atlas supports the live migration of data from an EC2 instance.  The Mongo Migration Tool or MongoMirror can be used to migrate the data.