loopback mongodb身份验证失败

Question

我有一个空的环回应用程序,我添加了一个模型和一个mongodb数据源.

连接时,我收到以下错误:

Web server listening at: http://0.0.0.0:3000
Browse your REST API at http://0.0.0.0:3000/explorer
Connection fails:  { [MongoError: Authentication failed.]
  name: 'MongoError',
  message: 'Authentication failed.',
  ok: 0,
  code: 18,
  errmsg: 'Authentication failed.' }
It will be retried for the next request.

/media/[...]/node_modules/mongodb/lib/mongo_client.js:454
              throw err
              ^
MongoError: Authentication failed.
    at Function.MongoError.create (/media/[...]/node_modules/mongodb-core/lib/error.js:31:11)
    at /media/[...]/node_modules/mongodb-core/lib/topologies/server.js:778:66
    at Callbacks.emit (/media/[...]/node_modules/mongodb-core/lib/topologies/server.js:95:3)
    at null.messageHandler (/media/[...]/node_modules/mongodb-core/lib/topologies/server.js:249:23)
    at Socket.<anonymous> (/media/[...]/node_modules/mongodb-core/lib/connection/connection.js:265:22)
    at emitOne (events.js:77:13)
    at Socket.emit (events.js:169:7)
    at readableAddChunk (_stream_readable.js:153:18)
    at Socket.Readable.push (_stream_readable.js:111:10)
    at TCP.onread (net.js:531:20)

db在docker中运行.我可以通过"MongoClient"连接到它

datasources.js:

{
    "mongodb_dev": {
        "name": "mongodb_dev",
        "connector": "mongodb",
        "host": "127.0.0.1",
        "database": "some-db",
        "username": "mongouser",
        "password": "pass",
        "port": 27017
    }
}

Answer 1

以下可能是此错误的原因.

1. 您正在针对一个数据库进行身份验证,并使用其他数据库进行应用程序.在您的mongoClient中,您可能将auth db配置为"admin",因此您可以无错误地连接.

如果是这样,您可以通过使用在数据库中创建用户来解决此问题

use application dbname
db.createUser(
   {
     user: "username",
     pwd: "password",
     roles: [ "readWrite", "dbAdmin" ]
   }
)

并使用此凭据连接数据库