A maintenance management method for a maintenance management device installed in a maintenance management system for performing maintenance processing relating to an application for providing a service including a plurality of partial services, the maintenance management device being configured to execute a predetermined maintenance management function for a predetermined partial service, the maintenance management device being connected to an action merging determination unit via a message bus, the action merging determination unit being configured to determine, for each maintenance management function, whether a corresponding action has ended in all the partial services, the maintenance management method comprising:
- by the maintenance management device, starting an action of a corresponding function when the action merging determination unit has determined that an action corresponding to another maintenance management function preset as a preceding stage of the action of the corresponding function has ended in all the partial services;
- and
- by the maintenance management device, issuing a start message when the action of the corresponding function starts and issuing an end message when the action of the corresponding function ends to allow the action merging determination unit to execute processing of determining whether the corresponding action has ended in all the partial services.