项目部署到阿里云服务器ubuntu14.04时会发生一次重启，看日志说
Db.prototype.authenticate method will no longer be available in the next major release 3.x as MongoDB 3.6 will only allow auth against users in the admin db and will no longer allow multiple credentials on a socket. Please authenticate using MongoClient.connect with auth credentials.
我在这里看到有人遇到同样的问题 https://github.com/Automattic...，说是mongoose的原因，我把mongoose升级到最新版本后还是报这个错。。。
这是我连mongodb的链接:

mongodb://blog_runner:safeblog@127.0.0.1:27017/blog-app

blog_runner是具有读写权限的。如何解决呢？