HP-UX AAA Server A.08.01 administrator's guide (T1428-90072, May 2010)

Table Of Contents
Scalability and High-Availability Concepts
This section describes the Scalability and High-Availability concepts. It discusses the
following topics:
“Grouping HP-UX AAA Servers” (page 274)
“HP-UX AAA Server Attributes” (page 274)
Grouping HP-UX AAA Servers
To manage multiple HP-UX AAA Servers on a single or multiple hosts with ease, the
HP-UX AAA Server Manager supports configuring and administering groups of HP-UX
AAA servers. Using this functionality, you can logically group related HP-UX AAA
Servers that are used for similar purposes, present on a single or multiple hosts. Each
group is associated with a group name, and each HP-UX AAA Server within a group
is associated with a server name.
Typically, groups contain cloned HP-UX AAA Servers or administration-related HP-UX
AAA Servers, although this is not a restriction. In a group with cloned HP-UX AAA
Servers, each HP-UX AAA Server is a clone of the primary HP-UX AAA Server in the
group. Groups with cloned HP-UX AAA Servers are created while deploying a scalable
and highly available solution. In a group with administration-related servers, each
HP-UX AAA Server performs functionalities, such as, authentication, accounting, and
dynamic authorization. Therefore, the administration tasks such as, starting, stopping
and reloading HP-UX AAA Servers in a group can be done with ease.
NOTE: At a given time, you can administer servers belonging to a single group only
using HP-UX AAA Server Manager.
HP-UX AAA Server Attributes
The HP-UX AAA Servers running on a host are independent of each other. Each server
is identified by a server name, and the IP address or the name of the host on which the
server is running. Each server must be assigned a set of server attributes, such as, Listen
IP Address, Authentication Port Number, Accounting Port Number, Dynamic
Authorization Port Number, Configuration Directory Path, and Log File Directory
Path. Every combination of the Listen IP Address and any of the port numbers such
as Authentication, Accounting, and Dynamic Authorization port numbers must be
unique across all the servers managed by the HP-UX AAA Server Manager.
HP-UX AAA Server Deployment for Scalability and High-Availability
Figure 18-1 illustrates multiple HP-UX AAA Servers on a host (Host 1) for greater
scalability and clones of servers on the same and different hosts (Host 2 and Host 3)
for high-availability.
274 Configuring HP-UX AAA Server for Scalability and High-Availability