mongodb 3.x 客户端连接上不原因之---authSchema 类型

查看日志，发现有一句：

Failed to authenticate admin@admin with mechanism MONGODB-CR: AuthenticationFailed MONGODB-CR credentials missing in the user document


3.0.3以前版本是ok的。

1.首先删除所有用户db.dropUser("xxx");

2.退出mongodb，无auth启动

3.创建超级用户，不是root哦，root无法操作system开头的，

  是 __system 超级角色

> use admin
switched to db admin
> db.createUser(
...   {
...     user: "xxx",
...     pwd: "xxx",
...     roles: [ { role: "__system", db: "admin" } ]
...   }
... )
Successfully added user: {
  "user" : "maclean_dbdao2",
  "roles" : [
    {
      "role" : "__system",
      "db" : "admin"
    }
  ]
}

4.修改system.version文档里面的authSchema版本为3，初始安装时候应该是5，命令行如下：
> use admin
switched to db admin
>  var schema = db.system.version.findOne({"_id" : "authSchema"})
> schema.currentVersion = 3
3
> db.system.version.save(schema)
WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })


5.重启服务，ok





http://21jhf.iteye.com/blog/2216103
http://liyanjie918.blog.163.com/blog/static/2022729020156261410274/
http://www.sufeinet.com/thread-11978-1-1.html
http://www.tuicool.com/articles/fMZbUzu