Table of Contents

Search

  1. Installation Overview
  2. Before You Install the Services
  3. Service Installation
  4. After You Install the Services
  5. Client Installation
  6. Uninstallation
  7. Starting and Stopping Informatica Services
  8. Connecting to Databases from Windows
  9. Connecting to Databases from UNIX
  10. Updating the DynamicSections Parameter of a DB2 Database
  11. Installation and Configuration Checklist
  12. Split Domain Configuration for Metadata Manager

Installation and Configuration Guide

Installation and Configuration Guide

Nodes

Nodes

Each node in the domain runs the Service Manager that manages domain functions on that node. The Service Manager also supports the application services that run on the node.
The domain functions that a node performs and the services that a node runs depend on the following node configurations:
Node type
The node type determines whether the node can serve as a gateway or worker node and determines the domain functions that the node performs. The first time that you install the Informatica services, you create a gateway node and the Informatica domain. When you install the Informatica services on other machines, you create additional gateway nodes or worker nodes that 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. The Service Manager on the master gateway node performs all domain operations on the master gateway node. The Service Managers running on other gateway nodes perform limited domain operations on those nodes.
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.
Node role
The node role defines the purpose of the node. A node with the service role can run application services. A node with the compute role can perform computations requested by remote application services. A node with both roles can run application services and locally perform computations for those services. By default, each gateway and worker node has both the service and compute roles enabled.
If a node is assigned to a Data Integration Service grid, you might want to update the node role. Enable only the service role to dedicate the node to running the Data Integration Service process. Enable only the compute role to dedicate the node to running Data Integration Service mappings.
For more information about nodes, see the
Informatica Administrator Guide
.
For more information about Data Integration Service grids, see the
Informatica Application Service Guide
.