Upgrade your MongoDB Deployment from 2.6.9 to 3.0.1 with Automation | MongoDB Blog`
You can now upgrade your MongoDB deployment safely and quickly from 2.6.9 to 3.0.1 via the user interface using the MongoDB Management Service, specifically through Automation. Before upgrading, consider the changes in the authorization model introduced by MongoDB 3.0.1, particularly for users of authSchemaVersion 1, which requires an upgrade to authSchemaVersion 3 before proceeding. Additionally, ensure that your drivers and utilities are compatible with the new version, as some may not work after upgrading to authSchemaVersion 5. To upgrade, review your current deployment, select the desired version, apply changes, and let Automation handle the rest. If necessary, resolve any issues with unreachable hosts or missing automation agents before proceeding. With proper setup, you can enjoy your updated MongoDB deployment running on version 3.0.1.