The paper describes the SysMan approach to interactive configuration management of distributed software components (objects). Domains are used to group objects to apply policy and for convenient naming of objects. Configuration Management involves using a domain browser to locate relevant objects within the domain service; creating new objects which form a distributed service; allocating these objects to physical nodes in the system and binding the interfaces of the objects to each other and to existing services. Dynamic reconfiguration of the objects forming a service can be accomplished using this tool. Authorisation policies specify which domains are accessible by which managers and which interfaces can be bound together.
This paper describes an environment for interactive configuration management of the software components comprising a distributed enterprise application. The environment permits one or more managers to view and modify the structure of components in terms of component instances, their allocation to hardware nodes and the bindings between their intelfaces. Our graphical management is based upon the Darwin configuration language which can be used to create the initial system. It supports hierarchical composition of CORBA components to form a composite distributed application or service. When this structure has been modified interactively, a persistent specijication of the configuration can be saved to backing store. This can be used to determine unreachable or failed components and, $ necessary, to recreate them. The configuration management environment is integrated into an overall domain-oriented platform for enterprise management. The paper illustrates the use of the management system in terms of a simple banking example, and outlines our implementation based on a CORBA plagorm.
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