如何使用 GSSAPI 认证机制访问 MongoDB？

Question

我正在尝试使用 c# 通过 ssl 证书连接到 MongoDB 服务器。我收到 System.TimeoutException （使用 CompositeServerSelector 选择服务器 30000 毫秒后发生超时）。我开始通过 MongoClientSetting 对象进行连接。这是代码：MongoClientSettings settings = new MongoClientSettings();settings.MaxConnectionLifeTime = new TimeSpan(12, 0, 0);settings.UseSsl = true;settings.VerifySslCertificate = false;var cert = new X509Certificate2("mongoDBCAFile.cer");settings.SslSettings = new SslSettings{    ClientCertificates = new[] { cert }};settings.Servers = new[]{    new MongoServerAddress("xyz1.intranet.companyname.com", 12345),    new MongoServerAddress("xyz2.intranet.companyname.com", 12345)};settings.ReplicaSetName = "replicaName";var cred = MongoCredential.CreateGssapiCredential("[e-mail]").WithMechanismProperty("SERVICE_NAME", "servicename");settings.Credential = cred;var client = new MongoClient(settings);var database = client.GetDatabase("DatabaseName");var collection = database.GetCollection<BsonDocument>("CollectionName");//This is the place of errorvar count1 = collection.CountDocuments(new BsonDocument());我尝试使用 ConnectTimeout、SocketTimeout 和 wTimeOut，但错误是一样的。我也尝试使用此处提到的连接字符串做同样的事情，但我不知道如何使用这么多参数创建连接字符串。

Answer 1

找到了解决方案。

问题在于使用外部服务器对用户进行身份验证。MongoDB 服务器一直在等待来自这个外部服务器的许可，但是由于身份验证从未成功，MongoDB 总是导致 System.TimeoutException。

这是修复代码。

settings.ReplicaSetName = "replicaName";

SecureString pwd = new NetworkCredential("intranet/userName", "myPassword").securePassword;

var cred = MongoCredential.CreateGssapiCredential("username/intranet.companyname.com", pwd).WithMechanismProperty("SERVICE_NAME", "serviceName").WithMechanismProperty("CANONICALIZE_HOST_NAME", "true");

settings.Credentials = cred;