Specifications
Setting up the Redundant License Server Pool
SentinelLM System Administrator’s Guide 49
8. Since this is the first time that the redundant license server pool has been
set up, you need to copy the redundant license file to each of the comput-
ers on which the redundant license servers resides. (After this, changes
to any one of the redundant license files will automatically be transmit-
ted to each redundant license server when one of the license servers is
stopped and restarted.)
9. Bring up each of the license servers in the pool. Because the redundant
license file is in the same directory as each license server, each license
server will automatically start up as a redundant license server.
10. You can now use WlmAdmin or lspool to turn off token borrowing
(license balancing) entirely, or enable/disable it for a particular license
feature/version.
Maintaining the Redundant License Server Pool
Once redundant license servers are set up, you can use lspool or WlmAdmin
from any computer on the network to change the license distribution, view
information about the redundant license server pool, and turn borrowing on/off.
You must set the LHOST environment variable to point to one of the redundant
license servers when using lspool. Some lspool options dynamically change the
redundant license server configuration, but do not write the changes permanently
to the redundant license file. When the redundant license servers are restarted,
the changes are lost. Other lspool options make permanent changes.
Information on WlmAdmin and lspool is included below.
Adding a Redundant License to an Existing Server Pool
By using the lslic utility, redundant licenses can be added dynamically. If the
requested server is the follower, it will forward the request to the leader; the
leader server will then check the validity of license. If the license can be added,
the leader will add that license and forward the license code to all the followers.
If distribution criterion is not specified using lslic, the tokens will be distributed
equally among the redundant license servers.










