Replica set configuration

A replica set consists of clustered servers that share sessions. A client session created by one member of a replica set can be used unmodified by another.

Specify the name of each replica set used in the server environment. By convention, set the replica set names to match the DNS name (fully-qualified host name) used by a website. For example, if the website DNS name is www.example.com, set the replica set name for the website to www.example.com.

Specify each replica set name in the configuration file of each WebSEAL instance that participates in those replica sets. Additionally, we must assign each junctioned or virtual host to the appropriate replica set. There are different procedures for assigning standard junctions and virtual hosts to a replica set. See:

• Configure WebSEAL to participate in multiple replica sets
  Each replica set that WebSEAL participates in must be listed in the [replica-sets] stanza of the WebSEAL configuration file.
• Assigning standard junctions to a replica set
  We must configure the standard junction replica set for the distributed session cache.
• Virtual hosts assigned to a replica set
  In contrast to standard junctions, virtual hosts can be individually assigned to different replica sets using the -z option of the pdadmin server task virtualhost create command.

Parent topic: Advanced configuration for the distributed session cache

Related concepts

• Distributed session cache configuration for WebSEAL
• Adjustment of the last access time update frequency for the distributed session cache
• Communication timeout configuration for the distributed session cache
• Performance configuration for the distributed session cache
• SSL configuration for WebSEAL and the distributed session cache
• Maximum concurrent sessions policy
• Single signon in a replica set