Abstract: A mapping schema between Web service SLA(service level agreement)and metrics based on traditional management architecture is proposed, and a service management model with active agent is also presented. The mapping schema defines SLA with WSLA (Web service level agreement) language, designs various metricsand schedules based on common information model (CIM), and maps arbitrarily complex SLA parameters into resource metrics that can be easily understood and enforced by the service provider. Through the schedules of the service management model, a resource subagent retrieves metric values from managed resources autonomously and calculates SLA parameters without replying on triggers by an external client so that assured services or SLA can be monitored and management automatically and the overall system resource consumption is reduced significantly. The simulation results have shown that the model can improve the management capabilityof distributed service.

Key words: :service management, service level agreement, Web services, common information model