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Migrate from Ops Manager or Cloud Manager to Atlas

Overview

To live migrate data from the Ops Manager-managed deployments to clusters in Atlas, you:

  1. Prepare a cluster in MongoDB Atlas.
  2. Provision a migration host in Ops Manager and connect Ops Manager to Atlas.
  3. Start the Live Migration process in Atlas.

You begin the process in Atlas, by running the Live Migration wizard. Depending on the stage in the process, you perform the Live Migration steps either in Atlas or in Ops Manager. See Workflow for Live Migration.

Prerequisites

Before you begin the Live Migration process, follow these prerequisites.

Request an External IP Address

Request an external IP address for Ops Manager from your network administrator. When you are ready to live migrate data, Atlas uses this address for a link-token it generates. When you run Live Migration, you push the data from a live deployment in Ops Manager to a provisioned cluster in Atlas using the link-token. You generate this link-token in Atlas in Stage 1 of the Live Migration process.

Create a Cluster in Atlas

Perform these tasks in Atlas:

Workflow for Live Migration

The following diagram describes the stages in the Live Migration workflow.

"To live migrate your deployment to Atlas, generate a link-token, provision a migration host, and start live migration."

The stages in the live migration workflow are:

  • Stage 1: Link with Atlas. Perform this step in Atlas, after provisioning a cluster.
    1. In the Atlas organization, go to Live Migration.
    2. Select Migrate from Ops Manager or Cloud Manager and start the Live Migration wizard.
    3. In the Generate Link-Token step of the wizard, specify the external IP address for Ops Manager that you obtained from your service administrator. To learn more, see Live Migrate Your Data from Ops Manager or Cloud Manager.
  • Stage 2: Provision Migration Host.
    • In Ops Manager, provision a Migration Host. A migration host is a dedicated MongoDB Agent that orchestrates the live migration process from Ops Manager to Atlas.
    • In the Live Migration: Connect to Atlas section of your Ops Manager organization’s Settings page, select Connect to Atlas and enter the the link-token that you created in Atlas.
  • Stage 3: Start the Migration. In Atlas, follow the steps in the wizard to start the live migration.

Considerations

The live migration process is CPU- and disk-intensive, and requires a cloud instance or an on-premises server with enough compute and storage capacity. Contact MongoDB Support for help with estimating your migration host’s storage and compute capacity.

Supported Platforms

Live Migration to Atlas is supported for all platforms on which you can provision a migration host. Provisioning of the migration host is supported on all platforms except for Windows or MacOS. You can still live migrate your data from a Windows- or macOS-based deployment to Atlas if you provision your migration host on one of its supported platforms.