Note
This page applies to both Atlas Infinite and Atlas Core.
You can access Atlas Flex clusters with MongoDB programmatic tools like the Atlas Administration API, Atlas CLI, HashiCorp Terraform MongoDB Atlas Provider, Atlas Kubernetes Operator, and AWS CloudFormation.
Use the following resources to configure, access and manage your Flex clusters.
Required Access
To view or update your Flex clusters, you must have Project Read Only access or higher to the project.
Create a Flex Cluster
When you create a Free cluster or a Flex cluster, you can select either Atlas Infinite or Atlas Core. However, the database edition you select doesn't impact how that cluster operates unless you scale to a dedicated cluster. Atlas automatically applies the stored database edition selection when you scale to a dedicated cluster, though you can also change the database edition at that time.
To learn how to select a database edition and scale a Free or Flex cluster to a dedicated cluster, see Scale a Free or Flex Cluster to a Dedicated Cluster.
View Your Flex Clusters
To view all Flex Clusters in the Atlas UI, see View All Cloud Clusters. To view the details for a Flex cluster, see View Cluster Details.
Update Your Flex cluster
You can manage Flex clusters in the following ways:
Action | Description |
|---|---|
Backups are automatically enabled for Flex clusters and can't be disabled. Atlas takes daily snapshots of your Flex clusters, which you can restore to a Flex cluster, an | |
Add tags, view existing tags, and manage tags. IMPORTANT: Don't include sensitive information such as Personally Identifiable Information (PII) or Protected Health Information (PHI) in your resource tags. Other MongoDB services, such as Billing, can access resource tags. MongoDB also sends cluster resource tags to DataDog and Prometheus integrations. Resource tags are not intended for private and sensitive data. To learn more, see Sensitive Information. | |
Terminate an existing Flex cluster. |
Important
As of February 2025, you can create Flex clusters, and can no longer create M2 and M5 clusters or Serverless instances in the Atlas UI, Atlas CLI, Atlas Administration API, Atlas Kubernetes Operator, HashiCorp Terraform, or Atlas CloudFormation Resources.
As of January 22, 2026, Atlas no longer supports M2 and M5 clusters and Serverless instances. All existing M2 and M5 clusters were migrated to Flex clusters.
Atlas migrated Serverless instances to Free clusters, Flex clusters, or Dedicated clusters according to your usage. To see which tiers Atlas migrated your instances to, consult the All Clusters page in the Atlas UI.