Data processing system, method of updating a configuration file and computer program product

Provided is a managed node comprising: a management agent comprising:-at least one monitoring element for monitoring at least one of a plurality of managed objects on the managed node according to at least one configuration file, the monitoring element adapted to send a message to a server over a network concerning the, or each managed object;-a discovery element for detecting a discovered state of the managed objects;-a repository for storing a stored state of the managed objects;-a delta detection module for detecting differences between the discovered state and the stored state;-a configuration element for updating at least one configuration file using the detected changes.