Creating an extreme-high-availability cluster

When you create an extreme-high-availability cluster, you need to set up the data group. Extreme-high-availability clusters can contain one or two data groups.

1. After specifying Extreme High Availability as your cluster type on the Cluster Info tab and your cluster name and password on the Cluster Settings tab, select Next: Data Groups.

2. On the Nodes Settings tab, in the Nodes section, select Two Data Nodes or Three Data Nodes.

   For more information on node architecture, see Extreme high availability (Preview).

3. In the Database Type section:

   1. Select the type of Postgres you want to use in the Postgres Type field:

      • Oracle Compatible is powered by EDB Postgres Advanced Server. View a quick demonstration of Oracle compatibility on BigAnimal. EDB Postgres Advanced Server is compatible with all three cluster types.

   2. In the Postgres Version list, select either 14 or 15 as the version of Postgres that you want to use.

4. Select the settings for your cluster according to Creating a cluster. Find the instructions for the Node Settings tab in Cluster Settings tab and Additional Settings tab.

5. In the Parameters section on the DB Configuration tab, you can update the value of the database configuration parameters for the data group as needed.

   To update the parameter values, see Modifying your database configuration parameters.

6. Select Create: Data Group. The data group preview appears.

7. To finish creating your cluster, select Create Cluster. If you want to create a second data group, select Add a Data Group.

Creating a second data group

After creating the first data group, you can create a second data group for your extreme-high-availability cluster by selecting Add a Data Group before you create the cluster.

By default, the settings for your first data group populate the second data group's settings. However, if you want to change certain settings you can. Just know that your changes can change the settings for the entire cluster. That being said, the database type and cloud provider must be consistent across both data groups. The data groups and the witness group must all be in different regions. Otherwise, you can choose the second data group's settings as needed.

When choosing the number of data nodes for the second data group, see Extreme high availability (Preview) for information on node architecture.

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• Creating a second data group