mongo
show dbs
use ycsb
db.createUser({ user: "root",pwd: "123", roles: [ { role: "readWrite", db: "ycsb" } ] })
db.auth("root","123")
参考：
https://www.jianshu.com/p/79caa1cc49a5
MongoDB创建数据库并设置密码
原文：https://www.cnblogs.com/genghenggao/p/10726346.html
