Installation and Upgrade Guides › Web Agent Installation Guide › Configurations Available for All Web Agents › Dynamic Policy Server Clusters

Dynamic Policy Server Clusters

In previous versions of SiteMinder, Web Agents did not automatically discover if a particular Policy Server had been added to or removed from a cluster. The Web Agents recognized the changes only after their respective web servers were restarted.

SiteMinder r6.0 SP6 supports dynamic Policy Server clusters. When dynamic Policy Server Clusters are enabled, Web Agents automatically discover any additions or removals of individual Policy Servers from an existing cluster.

For example, if your Web Agent connects to a cluster of the following Policy Servers:

• 192.168.2.100
• 192.168.2.101
• 192.168.2.103
• 192.168.2.104

and you decide to remove the server 192.168.2.103 to upgrade its operating system, enabling dynamic Policy Server clusters lets your Web Agents recognize the change in the membership of the cluster without restarting.

Restart your web server if you do any of the following:

• Change the configuration of an existing Policy Server (using the configuration wizard.
• Create a Policy Server cluster.
• Delete a Policy Server cluster.
• Change the values for any of the following Policy Server settings:
  • EnableFailOver
  • MaxSocketsPerPort
  • MinSocketsPerPort
  • NewSocketStep
  • RequestTimeout