The present invention makes it possible to set a monitoring method for each of a plurality of monitoring-targeted objects. A node, such as a server, and a component, which is included in the node, are monitoring-targeted objects. An information acquiring part 140 acquires information from the monitoring-targeted objects. A control part 130 monitors the status of each of the monitoring-targeted objects based on the monitoring method set by a user for each of the monitoring-targeted objects, and outputs an alert in a case where a failure has been detected. A monitoring status is linked between monitoring-targeted objects that are associated to one another.