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Can I bring an existing MongoDB deployment into MongoDB Atlas for management?

No. However, you can upload data from existing MongoDB deployment into MongoDB Atlas.

  • You can use the Live Migrate feature in Atlas to migrate from a source replica set to an Atlas cluster.
  • You can use mongomirror to migrate data from an existing MongoDB replica set into MongoDB Atlas.
  • You can use mongodump and mongorestore to seed MongoDB Atlas clusters from an existing standalone, replica set, and sharded cluster .

For information, see Import Data into Cluster.

You can also write scripts using official MongoDB supported drivers to upload data.

Which versions of MongoDB does Atlas use for the clusters?

Atlas supports MongoDB 3.2 and MongoDB 3.4 with the WiredTiger storage engine. By default, Atlas uses MongoDB 3.4. You can specify the MongoDB version when you create a cluster. If a created cluster uses MongoDB 3.2, you can upgrade to MongoDB 3.4 when you scale a cluster.

As new maintenance releases become available, Atlas automatically upgrades to these releases via a rolling process to maintain cluster availability.

Atlas does not support MongoDB Enterprise deployments.

Can I migrate between regions?

You cannot migrate between regions automatically; however, you can create different Atlas groups that are associated with different regions and perform manual migration.

Do you support cross-region deployments?

No. However, Atlas continues to evaluate various deployment strategies that ensure that a cluster deployment spans at least three availability zones, including potentially the use of cross-region deployments of clusters.

Until that time, if a cluster must span multiple regions, see MongoDB Cloud Manager.

What AWS Regions does Atlas support?

Atlas supports all AWS regions other than those in China and US GovCloud. For more information, see Amazon AWS.

Do you handle OS patches?

Yes. Atlas will automatically and transparently upgrade the OS patches in a rolling fashion to maintain cluster availability.

How can I pay for MongoDB Atlas without a credit card?

For alternative ways of purchasing Atlas, please contact MongoDB Inc..

Can I specify my own VPC for my MongoDB Atlas group?

No. An Atlas group, and its clusters, are associated with a region-specific Virtual Private Cloud (VPC).

To use a different VPC (e.g. on the customer’s own cloud infrastructure accounts), then the customer would need to use MongoDB Cloud Manager or Ops Manager.

MongoDB Atlas or Cloud Manager?

Atlas offers a managed experience, but without all of the configurations and infrastructure flexibility that some MongoDB users require. For example, Atlas only supports MongoDB versions 3.2 and MongoDB 3.4 with the WiredTiger storage engine. You also cannot customize the replica set or sharded cluster configuration.

MongoDB Cloud Manager offers users more control, exposing numerous MongoDB configuration options such as the storage engine, startup parameters, and access control options. Cloud Manager also provides the ability to manage MongoDB on the infrastructure of your choice. MongoDB Cloud Manager is better suited for advanced operations users who require this higher level of control, but Cloud Manager requires users to manage the full lifecycle of their infrastructure.

As an existing MongoDB Cloud Manager account holder, how do I create a new MongoDB Atlas group?

In Cloud Manager, click on your user name in the upper-right hand corner and select My Groups. Click the Add Group button.

The Create a New Group screen provides you the choice to create either an Atlas group or a Cloud Manager group. Select MongoDB Atlas to create a new Atlas group and switch to the Clusters view in Atlas. To add clusters to the new group, continue to Create a Cluster.

Can I disable SSL/TLS on my deployment?


How do I remove my group?

You can remove a group if:

  • You have the Owner role for the group.
  • The group has no outstanding invoices.
  • The group has no active clusters.

To remove a group, go to Settings, Billing/Subscriptions and click the Close Group <groupName> link.

Can I pause or stop my Atlas clusters?

No. You can only create and terminate Atlas clusters.

How do I modify alerts?

To modify an existing alert settings, go to Alerts and select Alert Settings. Click the ellipsis ... to modify (edit, clone, disable, delete) the setting for an active Alerts.

Does MongoDB Atlas expose the oplog?

Yes. To access the oplog, a database user must have read access on the local database. To create a user with read access on local:

  1. Click Clusters, then Security.
  2. Click Add New User and enter a user name. For example, “oploguser”.
  3. Click Show Advanced Options and select the read role and the local database. This restricts the user to read operations on the local database.
  4. Enter a password and click Add User.

Can MongoDB Atlas deploy clusters with more than 12 shards?

While MongoDB Atlas out of the box allows selection of up to 12 shards, customers interested in more than 12 shards should inquire with MongoDB. Contact us at

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