Node

After the domain configuration, the node gets configured. The following points describe a node:

• It is a representation of a server running the PowerCenter Server software.
• It is a logical representation of a machine in a domain.
• The node takes the name of your machine.
• Only one node is possible per license.
• One node in the domain acts as a gateway to receive service requests from clients and route them to the appropriate service and node.
• Services and processes run on nodes in a domain.
• There are two types of nodes that are configured--worker node and gateway node.
• Gateway node is created when you install Informatica. When we installed Informatica Server in the previous chapter, a default node was created; that node will act as the gateway node.
• The machine on which the domain is configured will be used as the gateway node.
• When you install the Informatica services on other machines, you create additional gateway nodes or worker nodes which you join to the domain.
• One gateway node serves as the master gateway node for the domain. The master gateway node receives service requests from clients and routes them to the appropriate service and node.
• A worker node is any node not configured to serve as a gateway. A worker node can run application services, but it cannot serve as a gateway. The service manager performs limited domain operations on a worker node.

The following figure represents the domain and node configuration: