Installation guide

Using the Load Balancing Plug-in: libresonate
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• Easy installation and configuration.
The ValiCert Web Server Validator is available for download from the iPlanet Web Server,
Enterprise Edition 4.1 CD-ROM, under the directory labeled
/valicert. For additional information
about the Web Server Validator, and to download the latest version, please go to
http://www.valicert.net/netscape.
If you have any questions, please contact ValiCert technical support at
[e-mail].
Using the Load Balancing Plug-in: libresonate
Overview
This plug-in is allows the server to execute a program when certain thread load conditions are met
so a load distribution product on the front-end can redistribute the load.
There are two methods that you can use to trigger the load balancer to increase or decrease load:
Standard: Base load decisions on the number of queued requests. This is a passive approach. By
letting the queue fill up you are already delaying some requests. In this case you want the
HighThreshold to be a low value and LowThreshold to be a high value.
Aggressive: Base load decisions on the number of active threads in the pool. This is designed to
more tightly control the requests so that you would reduce the load before requests get queued.
Thread pool configuration
For Unix platforms, you need to set up a specific thread pool for the plug-in to monitor. You can do
this from the Admin screen by selecting your instance and choosing Thread Pools.
Create a new thread pool with the settings that you want, the Administrator’s Guide has a good
description of how to do this and what each setting means. You are probably okay with just setting
the minimum and maximum threads.
Configuring thread pools will add something like the following example into your
server_root
/https-instance/config/obj.conf file:
Init name="sleep" MinThreads="1" MaxThreads="10" EarlyInit="yes"
fn="thread-pool-init"