Clustered systems provide a uniform computing
environment that is highly scalable, highly available, and secure.
It is critical that there be a single set of authorized users and
that these users be able to have processes executing on any cluster
member.
To achieve a uniform computing environment, a
cluster relies on the following components operating across all cluster
members:
Lock manager system services
($ENQ/$DEQ) (to provide a framework for building distributed applications)
File and record management
subsystems (coordinated through the lock manager)
Batch and print services
Process control system
services
Security auditing system
Within a cluster, authorization data for users
and the security profiles of objects must be consistent across all
nodes so that each cluster member makes the same access control decision
when presented with a particular user's access request for a
particular object. “Building a Common Environment” and “Synchronizing Authorization Data” describe how to achieve a single security domain.
