Out of support This documentation supports the 8.0 version of BMC Atrium Single Sign-On, which is in "End of Version Support." However, the documentation is available for your convenience. You will not be able to leave comments.Click here to view the documentation for a supported version of Remedy Single Sign-On.

Installing BMC Atrium Single Sign-On as a High Availability cluster

BMC Atrium Single Sign-On a High Availability (HA) cluster environment is implemented as a redundant system with session failover. In this model, if a node fails, the SSO load is transitioned to the remaining servers with minimal interruption.

When multiple BMC Atrium Single Sign-On servers are installed and configured to operate as a cluster, a system failure is absorbed by the remaining cluster nodes.

HA prerequisites

BMC Atrium Single Sign-On HA requires the following:

  • An installed load balancer.
  • The load balancer must support HTTP traffic.
  • The load balancer must be configured with HTTP session stick mode.
  • The load balancer must be configured for HTTPS communication.

Note

HTTP session sticky mode is used to ensure that the first BMC Atrium Single Sign-On server continues to be used for subsequent requests (excluding node failure).

HA pre-installation tasks

BMC recommends that you install the provided BMC Atrium Single Sign-On Tomcat server and Java virtual machine (JVM). Although, installation onto an external (customer-provided) Tomcat server and JVM is supported, this configuration is not recommended.

Before installing the first node, the following information is needed for cluster setup:

  • URL that the load balancer uses for the cluster. The load balancer uses this URL to disperse calls to the cluster nodes.
  • Port number for the internal LDAP server
  • Port number for the replication of the internal LDAP server

The port numbers are used by LDAP for communicating data and for replication information. The specified ports should not be used by other programs and must be accessible from every computer that is part of the cluster.

To install BMC Atrium Single Sign-On as an HA cluster

  2. Installing-additional-nodes-for-an-HA-cluster-on-a-new-Tomcat-server or Installing-additional-nodes-for-an-HA-cluster-on-an-external-Tomcat-server.

 

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