How to enable High Availability

Reviewed on April 02, 2025

You define your Database Instance's node configuration upon its creation. Two node configuration modes are available with PostgreSQL or MySQL Database Instances.

• High Availability: creates a secondary Instance with an up-to-date replica of the database. If the primary Instance fails, the secondary takes over requests.
• Standalone: a standalone database provisioned on a single node.

If you are standalone mode, you can change the node configuration to High Availability in the console anytime.

Before you start

To complete the actions presented below, you must have:

• A Scaleway account logged into the console
• Owner status or IAM permissions allowing you to perform actions in the intended Organization
• A PostgreSQL or MySQL Database Instance in standalone mode.

1. Click PostgreSQL and MySQL under Databases on the side menu. A list of your Database Instances displays.

2. Select the geographical region of the Instance you want to manage from the drop-down.

3. Click the name of the Database Instance you want to configure. Your database's Overview page displays.

4. Scroll down to the Node settings section. Then, click Activate High Availability.

5. Review the new estimated cost.

6. Click Activate.

   Note

   The action of changing the node configuration will perform a rolling upgrade of your Database Instance. During this process, the Database Instance will be unavailable for several tens of seconds.