Abstract EN:

Component-oriented systems are increasingly evolving and being adopted by both industrial and academic worlds. The have resulted from the advances achieved in both software engineering and distributed systems. In our works, we concentrate on the EJB component model; we present an administration platform for a federation of servers cooperating to host a number of applications. The federation includes different servers with different configurations, characteristics, services and resources. Our main objective is manage the deployment of EJB components in the federation depending on their needs to the available resources and services offered by the servers. The proposed administration platform is based on the JMX instrumentation platform. We propose a 3-level instrumentation model to collect management information from 3 environment levels: network and system low level, application server level, and components level. The administration platform gets all necessary information about the execution environment from this instrumentation platform modelled in 3 levels where all the elements are also modelled as managed objects. Furthermore, the administration platform defines a number of services to control the deployment management in the federation such as a migration service, EJB evaluation, and EJB instrumentation service. Beside these services, we define a number of rules to be considered while taking decisions concerning the deployment process and the communication between the application servers