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Dynamic Policy Server Clusters

Earlier versions of SiteMinder agents did not automatically discover when Policy Servers were added or removed from a cluster. The agents recognized the changes only after their respective web servers were restarted.

SiteMinder r12.0 SP3 supports dynamic Policy Server clusters. Agents automatically discover Policy Servers that are added or removed from an existing cluster when dynamic Policy Server Clusters are enabled.

For example, suppose that your agent connects to a cluster of the following Policy Servers:

Suppose that you later decide to remove the server 192.168.2.103 to upgrade its operating system. In this situation, enabling dynamic Policy Server clusters lets your agents recognize the change in the membership of the cluster without restarting.

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

Connect a Web Agent to a Dynamic Policy Server Cluster

You can connect a Web Agent to one or more dynamic Policy Server clusters by modifying the SmHost.conf file on your web server.

Follow these steps:

  1. Open the following file with a text editor:
    web_agent_home\config\SmHost.conf
    
    web_agent_home

    Indicates the directory where the SiteMinder Agent is installed.

    Default (Windows 32-bit installations of SiteMinder Web Agents only): C:\Program Files\CA\webagent

    Default (Windows 64-bit installations [SiteMinder Web Agents for IIS only]): C:\Program Files\CA\webagent\win64

    Default (Windows 32-bit applications operating on 64-bit systems [Wow64 with SiteMinder Web Agents for IIS only]): C:\Program Files (x86)\webagent\win32

    Default (UNIX/Linux installations): /opt/ca/webagent

  2. Do one of the following tasks:
  3. Save the SmHost.conf file, and then close the text editor.
  4. Restart your web server.

    The Web Agent is connected to dynamic Policy Server clusters.