This invention is, in an application system, to grasp a status of a resource and to facilitate a management of the application in a container orchestration platform, by determining a corresponding relation between an operator and a resource. An operator management apparatus of the present invention includes an application system construction unit which designates a configuration of the application system including a set of operators, a resource management unit which acquires resource information about a set of resources generated by the set of operators, and a relation determination unit which, using a feature value of a first operator included in the set of operators and the resource information, calculates a probability at which a first resource included in the set of resources corresponds to the first operator to thereby determine the corresponding relation between the first operator and the first resource.