MongoDB Control Plane will be undergoing planned maintenance at 5 PM ET on Oct 1, 2025. We will be adding additional IP addresses to the MongoDB Control Plane.
We are improving how MongoDB manages the control plane for Atlas clusters and Cloud Manager to ensure high-quality service with improved availability, sustainability and scalability. Please note that this is a follow-up communication to our June 2025 communications titled “Action May Be Required - Upcoming changes to the IP addresses of MongoDB Atlas Control Plane” and “Action May Be Required - Upcoming changes to the IP addresses of MongoDB Cloud Manager Control Plane”.
If your applications have hard-coded dependencies on the Atlas Control Plane, your infrastructure will need to be updated with additional IP addresses before September 30, 2025. If you were affected by the recent issue relating to Azure clusters with KeyVault enabled (https://status.mongodb.com/incidents/nlwkk8xbzjhm), you must take this action.
For Cloud Manager customers: The action may be required for the cloud manager customers for scenarios (https://www.mongodb.com/docs/cloud-manager/reference/firewall-configuration/#ipaddr-addresses-for-alert-webhooks) where you have set up firewalls, access control lists, or security groups on any host that allow inbound traffic from these IP addresses. Your Alert Webhooks may not work properly if the suggested changes are not done in time, however, you will still be able to monitor, backup, and automate any changes as usual.