通过 SSH 隧道连接到 .Net Core 中的 AWS DocumentDb

Posted 2023-03-23

【中文标题】通过 SSH 隧道连接到 .Net Core 中的 AWS DocumentDb

【英文标题】：Connect to AWS DocumentDb in .Net Core through SSH Tunnel

【发布时间】：2021-05-02 12:32:24

【问题描述】：

我已经设法通过 SSH 隧道将 MongoDb Compass 和 Studio3T 连接到了我在 AWS 上的 DocumentDb 集群。因此，VM 或集群上没有配置或安全问题。

但是，当尝试使用 .NET core 进行连接时，我不断出现超时。

我正在按如下方式设置 SSH 隧道：

ssh -i "VMKey.pem" -L 27015:<db-name>.<cluster-name>.eu-central-1.docdb.amazonaws.com:27015 <user>@<vm-name>.eu-central-1.compute.amazonaws.com -N

这里是连接代码：

string template = "mongodb://0:1@2/test?ssl=true&replicaSet=rs0&readpreference=3";
string readPreference = "secondaryPreferred";
string connectionString = String.Format(template, username, password, "localhost:27015", readPreference);

var settings = MongoClientSettings.FromUrl(new MongoUrl(connectionString));
settings.AllowInsecureTls = true;
var client = new MongoClient(settings);

var database = client.GetDatabase("logs-database");
_collection = database.GetCollection<BsonDocument>("logs-collection");

尝试将记录插入数据库后，这是我收到的错误：

A timeout occured after 30000ms selecting a server using CompositeServerSelector Selectors = MongoDB.Driver.MongoClient+AreSessionsSupportedServerSelector, LatencyLimitingServerSelector AllowedLatencyRange = 00:00:00.0150000  . Client view of cluster state is  ClusterId : "1", ConnectionMode : "ReplicaSet", Type : "ReplicaSet", State : "Disconnected", Servers : [ ServerId: " ClusterId : 1, EndPoint : "Unspecified/<logs-db>.ckwpv9kdyp3i.eu-central-1.docdb.amazonaws.com:27015" ", EndPoint: "Unspecified/<logs-db>.ckwpv9kdyp3i.eu-central-1.docdb.amazonaws.com:27015", ReasonChanged: "Heartbeat", State: "Disconnected", ServerVersion: , TopologyVersion: , Type: "Unknown", HeartbeatException: "MongoDB.Driver.MongoConnectionException: An exception occurred while opening a connection to the server.
 ---> System.Net.Internals.SocketExceptionFactory+ExtendedSocketException (10060): A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. 172.31.41.178:27015
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw(Exception source)
   at System.Net.Sockets.Socket.EndConnect(IAsyncResult asyncResult)
   at System.Net.Sockets.Socket.<>c.<ConnectAsync>b__274_0(IAsyncResult iar)
--- End of stack trace from previous location where exception was thrown ---
   at MongoDB.Driver.Core.Connections.TcpStreamFactory.ConnectAsync(Socket socket, EndPoint endPoint, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Connections.TcpStreamFactory.CreateStreamAsync(EndPoint endPoint, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Connections.SslStreamFactory.CreateStreamAsync(EndPoint endPoint, CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Connections.BinaryConnection.OpenHelperAsync(CancellationToken cancellationToken)
   --- End of inner exception stack trace ---
   at MongoDB.Driver.Core.Connections.BinaryConnection.OpenHelperAsync(CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Servers.ServerMonitor.InitializeConnectionAsync(CancellationToken cancellationToken)
   at MongoDB.Driver.Core.Servers.ServerMonitor.HeartbeatAsync(CancellationToken cancellationToken)", LastHeartbeatTimestamp: "2021-01-28T15:11:45.2629877Z", LastUpdateTimestamp: "2021-01-28T15:11:45.2629880Z" ] .

注意：集群上禁用了 TLS

【参考方案1】：

请更改以下内容并重试

ssl=false remove replicaSet=rs0 ：您将无法使用 SSH 隧道作为副本集连接到 Amazon DocumentDB。详情请参阅link。

这是更新后的字符串

"mongodb://0:1@2/test?ssl=false&readpreference=3"