https://help.aliyun.com/document_detail/56990.html?spm=a2c4g.11186623.6.1282.5a5216bblAREjm
https://help.aliyun.com/document_detail/50452.html?spm=a2c4g.11174283.6.1275.24747da2SQFT45
实时同步有第三方工具ossync:https://bbs.aliyun.com/read/148095.html