Legacy Live Migration: Push Your Data from Cloud Manager or Ops Manager to Atlas

mongomirror will reach its End of Life (EOL) on July 31st 2025, in favor of mongosync (see the mongomirror documentation). Live Migrate will accordingly replace its usage of mongomirror with mongosync. After July 2025, Live Migrate will only be supported for source cluster versions 5.0 and above.

If your source replica set is running MongoDB 4.4 or 5.0 and is monitored by Cloud Manager or Ops Manager, and you are migrating to a destination replica set running MongoDB 6.0, you can use the procedures linked from this section to live migrate data into Atlas using the legacy live migration service through the Atlas UI.

Restrictions

The following statements describe restrictions for various aspects of legacy live migration. Legacy live migration is a type of live migration that you run in the Atlas UI and that is backed by mongomirror.

Legacy live migration (push) is not supported for deployments managed or monitored by Ops Manager
- For source deployments running MongoDB 6.0 or later, where the deployments are managed or monitored by Ops Manager, legacy live migration (push) is not supported.
- For source deployments running a MongoDB version earlier than 6.0, where the deployments are managed or monitored by Ops Manager, live migration (push) is deprecated.
  Use the following alternative ways to migrate your source deployments that are managed or monitored by Ops Manager into Atlas:
  - Add your deployment to monitoring in Cloud Manager and use live migrate (push). See Live Migrate (Push) a Cluster Monitored by Cloud Manager into Atlas for most cases except for the following cases:
    If you are migrating a source replica set running MongoDB versions 4.4 or 5.0, where the replica set is managed or monitored by Cloud Manager or Ops Manager, to a destination replica set running MongoDB version 6.0, see the procedures in this section.
  - Use live migration (pull). See Live Migrate (Pull) a Cluster into Atlas for most cases except for the following cases:
    If you are migrating a source replica set running MongoDB versions 4.4 or 5.0 to a destination replica set running MongoDB version 6.0, see Legacy Live Migration: Pull Your Data into Atlas.
  - Use standalone mongosync.
Legacy live migration (push) is not supported for sharded clusters
- To live migrate a source sharded cluster to Atlas, use this live migration procedure.

Go to Legacy Live Migration (Push)

To locate legacy live migration (push) in the Atlas UI:

In Atlas, go to the Organization Settings page.

Warning

Navigation Improvements In Progress

We're currently rolling out a new and improved navigation experience. If the following steps don't match your view in the Atlas UI, see the preview documentation.

If it's not already displayed, select your desired organization from the Organizations menu in the navigation bar.
Click the Organization Settings icon next to the Organizations menu.
The Organization Settings page displays.

Go to the Live Migration to Atlas page.

Click Live Migration in the sidebar.

The Live Migration to Atlas page displays.

Click Migrate from Ops Manager or Cloud Manager.

Legacy Live Migration (Push) Methods

Method	Description
Live migrate (push) a replica set monitored in Ops Manager or Cloud Manager to Atlas	Cloud Manager or Ops Manager pushes data from the source replica set running a MongoDB version earlier than 6.0 to a destination replica set in Atlas.
Live migrate a sharded cluster monitored in Ops Manager or Cloud Manager to Atlas	To live migrate a source sharded cluster to Atlas, use this live migration procedure.
Live migrate a standalone MongoDB node running a MongoDB version earlier than 6.0.	Convert the standalone MongoDB node in Ops Manager, or convert the standalone MongoDB node in Cloud Manager to a single-node replica set and then live migrate (push) it to Atlas.

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Troubleshoot

Replica Set 4.4 or 5.0