我的代码
using MongoDB.Bson;
using MongoDB.Driver;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace MongoDriver2._4._3Test
{
class Program
{
protected static MongoCredential _credentials;
protected static MongoClientSettings mongoClientSettings;
protected static IMongoClient _client;
protected static IMongoDatabase _database;
static void Main(string[] args)
{
_credentials = MongoCredential.CreateMongoCRCredential("dbName", "userName", "password");
mongoClientSettings = new MongoClientSettings
{
Credentials = new[] { _credentials },
Server = new MongoServerAddress("172.x.x.x", 27017)
};
_client = new MongoClient(mongoClientSettings);
getDataFromMongo();
Console.ReadLine();
}
static async void getDataFromMongo()
{
_database = _client.GetDatabase("dbName");
var collection = _database.GetCollection<BsonDocument>("_project");
var builder = Builders<BsonDocument>.Filter;
var filter = new BsonDocument();
var count = 0;
using (var cursor = await collection.FindAsync(filter))
{
while (await cursor.MoveNextAsync())
{
var batch = cursor.Current;
foreach (var document in batch)
{
Console.WriteLine(count + "_id -> " + document[0] + "ProjectName -> " + document[7] + "\n");
// process document
count++;
}
}
}
}
}
}
问题：
{"A timeout occured after 30000ms selecting a server using CompositeServerSelector{ Selectors = ReadPreferenceServerSelector{ ReadPreference = { Mode : Primary } }, LatencyLimitingServerSelector{ AllowedLatencyRange = 00:00:00.0150000 } }. Client view of cluster state is { ClusterId : \"1\", ConnectionMode : \"Automatic\", Type : \"Unknown\", State : \"Disconnected\", Servers : [{ ServerId: \"{ ClusterId : 1, EndPoint : \"172.24.17.3:27017\" }\", EndPoint: \"172.24.17.3:27017\", State: \"Disconnected\", Type: \"Unknown\", HeartbeatException: \"MongoDB.Driver.MongoConnectionException: An exception occurred while opening a connection to the server. ---> MongoDB.Driver.MongoAuthenticationException: Unable to authenticate username 'devTeam' on database 'BAC_Test'. ---> MongoDB.Driver.MongoCommandException: Command authenticate failed: auth failed.\r\n at MongoDB.Driver.Core.WireProtocol.CommandWireProtocol`1.ProcessReply(ConnectionId connectionId, ReplyMessage`1 reply)\r\n at MongoDB.Driver.Core.WireProtocol.CommandWireProtocol`1.<ExecuteAsync>d__11.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()\r\n at MongoDB.Driver.Core.Authentication.MongoDBCRAuthenticator.<AuthenticateAsync>d__7.MoveNext()\r\n --- End of inner exception stack trace ---\r\n at MongoDB.Driver.Core.Authentication.MongoDBCRAuthenticator.<AuthenticateAsync>d__7.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Runtime.CompilerServices.ConfiguredTaskAwaitable.ConfiguredTaskAwaiter.GetResult()\r\n at MongoDB.Driver.Core.Authentication.AuthenticationHelper.<AuthenticateAsync>d__1.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Runtime.CompilerServices.ConfiguredTaskAwaitable.ConfiguredTaskAwaiter.GetResult()\r\n at MongoDB.Driver.Core.Connections.ConnectionInitializer.<InitializeConnectionAsync>d__3.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()\r\n at MongoDB.Driver.Core.Connections.BinaryConnection.<OpenHelperAsync>d__48.MoveNext()\r\n --- End of inner exception stack trace ---\r\n at MongoDB.Driver.Core.Connections.BinaryConnection.<OpenHelperAsync>d__48.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Runtime.CompilerServices.ConfiguredTaskAwaitable.ConfiguredTaskAwaiter.GetResult()\r\n at MongoDB.Driver.Core.Servers.ServerMonitor.<HeartbeatAsync>d__27.MoveNext()\" }] }."}
我无法连接到mongodb。我的包版本是2.4.3 Mongodb c＃的官方驱动程序，我试过两个，用连接字符串连接
_client = new MongoClient("mongodb://user:password@172.x.x.x:27017/dbname");
并使用mongoClientSettings连接，如上面给出的代码所示
_credentials = MongoCredential.CreateMongoCRCredential("dbName", "userName", "password");
mongoClientSettings = new MongoClientSettings
{
Credentials = new[] { _credentials },
Server = new MongoServerAddress("172.x.x.x", 27017)
};
_client = new MongoClient(mongoClientSettings);
不幸的是两个都没有用。我已经看到可用的解决方案MongoDB-CR Authentication failed要求我降级authSchema版本，但我不想这样做。在我的情况下，我使用mongo 3.4和c＃驱动程序2.4.3进行了更新，所以我想要一个符合最新更新的解决方案。
答案 0 :(得分：1)
请查看是否为此数据库配置了用户名。
无法在数据库'BAC_Test'上验证用户名'devTeam'。可能是应该验证的数据库是admin？
尝试像这样单独进行身份验证。
MongoCredential.CreateCredential（“admin”，用户名，密码）
让我知道你的发现
谢谢， Phanivikranth