Specifications

Overview of License Balancing and Redundant License Servers
40
Chapter 3 - Setting up Redundant License Servers and License Balancing
You may also choose to configure the license servers so that only one is active
and the others are solely backup license servers. In this case, all of the license
tokens should be allocated to just a single license server and license balancing
turned off. Then the other license servers would only be used if the main license
server went down.
The Redundant License File (lservrlf)
The redundant license file (by default named lservrlf) is the key to the redundant
license server pool. This file is created by the rlftool or Wrlftool utility (or
WlmAdmin calling Wrlftool), and defines which license servers make up the
redundant license server pool as well as how many tokens of which licenses are
distributed among those license servers. Each computer on which a redundant
license server resides will have a copy of this file.
Important Each license server in the redundant license server pool must be started
with a copy of the redundant license file in the same directory in which the
license server resides in order to come up as a redundant license server. (Or
the license server -lfe startup option can be used to specify the location of
the redundant license file.)
The Redundant License Server Pool
The redundant license file defines a group of redundant license servers called the
redundant license server pool. The following sections give more information on
the redundant license server pool.
The Redundant License Server Leader
All servers in a redundant license server pool can grant license tokens to clients.
However, only one of the license servers is designated as the leader (the
remainder of the license servers are known as the followers).
Tip Because the leader must communicate with all other redundant license
servers, the leader should be in an area of the network with good band-
width.