Dynamic clusters consist of server instances that can be dynamically scaled up to meet the resource needs of your application. A dynamic cluster uses a single server template to define configuration for a specified number of generated (dynamic) server instances.
When you create a dynamic cluster, the dynamic servers are preconfigured and automatically generated for you, enabling you to easily scale up the number of server instances in your dynamic cluster when you need additional server capacity. You can simply start the dynamic servers without having to first manually configure and add them to the cluster.
If you need additional server instances on top of the number you originally specified, you can increase the maximum number of servers instances (dynamic) in the dynamic cluster configuration or manually add configured server instances to the dynamic cluster. A dynamic cluster that contains both dynamic and configured server instances is called a mixed cluster.
| Term | Definition |
|---|---|
dynamic cluster | A cluster that contains one or more generated (dynamic) server instances that are based on a single shared server template. |
configured cluster | A cluster in which you manually configure and add each server instance. |
dynamic server | A server instance that is generated by WebLogic Server when creating a dynamic cluster. Configuration is based on a shared server template. |
configured server | A server instance for which you manually configure attributes. |
mixed cluster | A cluster that contains both dynamic and configured server instances. |
server template | A prototype server definition that contains common, non-default settings and attributes that can be assigned to a set of server instances, which then inherit the template configuration. For dynamic clusters, the server template is used to generate the dynamic servers. |
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