Abstract: A support system includes a storage unit for storing a dependency graph in which components are expressed as nodes and relationships of components depending directly on each other are expressed with links, a log display unit for displaying, in response to detection of a failing component, a log of events occurring in the component, a selection unit for selecting, in response to an instruction by a user, a component that is adjacent to the failing component on the dependency graph, as a candidate component for a failure cause, and a display control unit for enabling the log display unit to additionally display a log of events occurring in the selected candidate component, wherein the selection unit further selects, in response to an instruction by a user, a component that is adjacent to the candidate component on the dependency graph as a new candidate component on condition that a log thereof has not yet been displayed.