Apache Web Server must have the correct security files to work with the load balancer plug-in. The load balancer depends on the NSS (Network Security Service) library, which requires these security database files. You need to get these security database files from Enterprise Server, so an installation of Enterprise Server must be available in a location accessible by the Web Server.
To configure security files to work with the load balancer:
For Apache 2.0.x, append /usr/lib/mps to LD_LIBRARY_PATH in the Apache-install-dir/bin/apachectl script.
For Apache 2.2.x, append /usr/lib/mps to LD_LIBRARY_PATH in the Apache-install-dir/bin/envvars file.