Installation guide

Installing or Upgrading NetIQ eDirectory on Linux 41
The method to configure multiple instance is similar to configuring a single instance multiple times.
Each instance should have unique instance identifiers, such as the following:
 Different data and log file location
You can use the ndsconfig
--config-file , -d , and -D options to do this.
 Unique port number for the instance to listen to
You can use the ndsconfig
-b and -B options to do this.
 Unique server name for the instance
You can use the ndsconfig
-S server name option to do this.
IMPORTANT: During eDirectory configuration, the default NCP server name is set as the host
server name. When configuring multiple instances, you must change NCP server name. Use the
ndsconfig command line option, -S <server_name> to specify a different server name.
When configuring multiple instances, either on the same tree or on different trees, the NCP
server name should be unique.
Need for Multiple Instances
Multiple instances arose from the need to:
 Leverage high-end hardware by configuring more than one instance of eDirectory.
 Pilot your setup on a single host before investing on the required hardware.
Sample Scenarios for Deploying Multiple Instances
Multiple instances that belong to the same or multiple trees can be used in the following scenarios
effectively.
eDirectory in a Large Enterprise
 In large enterprises, you can provide load balancing and high availability of eDirectory services.
For example, if you have three replica servers running LDAP services on ports 1524, 2524, and
3524, respectively, you can configure a new instance of eDirectory and provide a high-
availability LDAP service on a new port 636.
 You can leverage high-end hardware across departments in an organization by configuring
multiple instances on a single host.
eDirectory in an Evaluation Setup
 Universities: Many enthusiasts (students) can evaluate eDirectory from the same host using the
multiple instances.
 Training for eDirectory administration:
 Participants can try out administration using the multiple instances.
 Instructors can use a single host to teach a class of students. Each student can have his own
tree.