Update a MariaDB Cluster

After creation, you can update the name, properties, configuration details, upgrade the cluster version, and the maintenance period of a MariaDB cluster.

To update a cluster, follow these steps:

1

Navigate to the cluster

1. In the DCD, go to Menu > Databases > MariaDB.

A list of all MariaDB clusters is displayed.

2. Click Edit in the OPTIONS column for the cluster you want to update.

Note: Alternatively, click the cluster name or select Details in the OPTIONS column to open the cluster details page, and then click Edit.

Edit a MariaDB cluster

2

Update cluster properties

In the Properties section, you can update the following:

1. Cluster name: Enter an updated name for the cluster. It must be between 2 and 63 characters long, must start and end with an alphanumeric character, and may contain the following special characters: hyphen (-), underscore (_), and period (.).

2. Location: Displays the region where the cluster is deployed. This cannot be changed after the cluster is created.

3. (Optional) Description: Enter or update the human-readable description for the cluster.

3

Update the cluster configuration

In the Cluster configuration section, you can update the following:

1. Version: Select a MariaDB version from the drop-down list. You can only upgrade to a higher version; downgrades are not supported.

2. Instances: Enter the number of instances for the cluster. A value of 1 creates a single-instance cluster. Values 2–5 create a replicated cluster with one primary and n-1 secondary instances.

3. Backup: Select the Object Storage region where cluster backups are stored, for example eu-central-3.

4. Retention days: Enter the number of days backups are retained before being automatically deleted. You can set a value between 1 and 365.

4

Update Observability settings

In the Observability section, you can update the following:

1. Enable logs: Turn on to forward cluster logs to your logging endpoint.

2. Enable metrics: Turn on to forward cluster metrics to your monitoring endpoint.

Note: Observability services must be activated for your contract before logs and metrics can be collected. If not activated, selecting these settings is accepted but has no effect.

5

Adjust instance resources

In the Resources section, adjust the resources allocated per instance:

1. Number of CPUs (per instance): Use the slider to set the number of dedicated CPU cores per instance.

2. RAM Size (per instance): Use the slider to set the amount of RAM, in GB, per instance.

3. Storage Size (per instance): Use the slider to set the storage, in GB, per instance. Storage size can only be increased after the cluster is created; it cannot be reduced.

6

Review the Data Center connection

The Data Center connection section displays the network settings configured during cluster creation:

• Network configuration: The datacenter to which the cluster is connected.
• VDC LAN: The LAN within the datacenter used for cluster connectivity.
• IP/Subnet: The private IP address assigned to the cluster's primary instance.

Note: Make sure the selected private IP address is not already in use within the DCD. The following IP address ranges cannot be used with MariaDB services:

• 10.208.0.0/12
• 10.233.0.0/18
• 192.168.230.0/24
• 10.233.64.0/18

7

Update the maintenance window

In the Maintenance period section, you can update the following:

1. Day: Select a day of the week from the drop-down list.

2. Start Time (UTC): Enter or select a start time for the maintenance window.

Note: The maintenance timeframe is your selected start time (UTC) plus 4 hours. If not specified, the timeframe for maintenance can be anytime Mon - Fri, 7 AM - 5 PM.

8

Update the database user

In the User Creation section, you can update the following:

1. Username: Enter a username to provide access to the MariaDB cluster. It must be between 2 and 16 characters long and may only contain alphanumeric characters and underscores (_). Some usernames are reserved for platform use (for example, mariadb, admin, standby) and are not allowed.

2. Password: Enter a password for the respective user.

3. Database: Enter a name for the database.

Warning: If the user already exists in the restored backup, its credentials will be overwritten.

9

Save the changes

Review the Estimated costs displayed at the bottom of the page, then click Save to apply your changes.

Result: Your MariaDB cluster is updated. Its STATE is set to UPDATING while the changes are being applied. Once complete, the cluster returns to AVAILABLE.

Update a MariaDB cluster

Next steps

• View MariaDB Clusters: View the details and status of your updated cluster.
• Restore a MariaDB Cluster: Restore a cluster from an existing backup.