In this paper, the authors propose a set of tools to reduce costs of building cyber ranges on cloud. The threat of cyber attacks is increasing year by year. On the other hand, there are not enough specialists for counterpart to the cyber attacks. One of the reason of the lack of specialists and developing human resources is a difficulty of preparing appropriate teaching materials and to take very long time to educate. Conducting cyber attack exercises for human resource development is effective because participants can experience how to deal with actual attacks. In the cyber attack response exercise, the exercise using cyber ranges can produce the situation close to the actual incident by constructing virtual environments and producing the real environments, so a high exercise effect can be expected. However, in order to build and operate the cyber ranges, advanced knowledge such as network design and server construction will be required, and complicated settings will be troublesome and not easy. As an existing method for building cyber ranges, there is a method building it on the cloud environments and using configuration management tools. This method can improve the reproducibility and scalability of cyber ranges and can reduce the cost to manage physical devices. However, this method also requires many settings and procedures. We develop a tool to reduce these settings and procedures by templating a basic design and automating. And then, we evaluate a convenience of proposed tool and features of the environment built using it.