https://dshimizu.hatenablog.com/entry/CentOS_7.0%E3%83%98Amazon_EC2_API_Tools%E3%81%AE%E5%AE%9F%E8%A1%8C%E7%92%B0%E5%A2%83%E3%82%92%E6%BA%96%E5%82%99%E3%81%99%E3%82%8B2022-03-19T17:05:13+09:00