User guide

Chapter 1: Overview
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Figure 1-33 Standby Repository takes over in the Event of a Failure
This means that the Interstage Single Sign-on service can operate without a halt when multiple
repository servers (reference systems) are installed.
To check the sequence of connections to the repository servers (reference systems) from the
authentication server, select, on the Interstage Management Console, [System] > [Security] > [Single
Sign-on] > [Authentication infrastructure] > [Authentication server] > [Settings] > [Detailed Settings
[Show]]. The sequence of connections is indicated by [Host name and Port numberNo.] under
[Communication Settings with Repository server (reference system)].
The authentication server attempts to connect to all the specified repository servers (reference systems)
sequentially. If the authentication server cannot connect to any other repository servers, it attempts to
connect to the first repository server (reference system) again. If the first repository server also cannot
be connected, the authentication server notifies the user of the failure in authentication.
Note that the repository server (update system) can be operated as a repository server (reference
system). When the repository server (update system) is specified as the last repository server
(reference system) to be connected in the setting for [Communication Settings with Repository server
(reference system)], the authentication server attempts to connect to the repository server (update
system) after it has failed in attempts to connect to every repository server (reference system).
Notes
• Use repository servers with the same edition/version as the repository servers (update and
reference systems).
• System availability cannot increase by using multiple repository servers (update systems). Note
that Interstage Application Server Enterprise Edition supports the increase of system availability by
using a cluster configuration of repository servers (update systems).