间歇性TimeoutException在Azure上基于Linux的docker容器上从.net core 2.2连接Atlas MongoDb

Question

我有一个基于.Net Core 2.2的应用程序，它连接到Atlas中的MondoDb集群V3.6。该应用程序作为Linux Docker容器在Azure中托管。该应用程序正在使用MongoDB .Net驱动程序2.7.3。该应用程序定期（几分钟一次）收到以下超时异常：

System.TimeoutException at MongoDB.Driver.Core.Clusters.Cluster.ThrowTimeoutException

和

System.TimeoutException at MongoDB.Driver.Core.Connections.TcpStreamFactory.ConnectAsync

mongo客户端实例是根据MongoDb文档配置的，即

var url = MongoUrl.Create("mongodb+srv://user:[email protected]/?authSource=admin&retryWrites=true&ssl=true");
        var clientSettings = MongoClientSettings.FromUrl(url);
        clientSettings.SslSettings = new SslSettings() { EnabledSslProtocols = SslProtocols.Tls12 };

        void SocketConfigurator(Socket s) => s.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.KeepAlive, true);

        clientSettings.ClusterConfigurator = builder =>
            builder.ConfigureTcp(tcp => tcp.With(socketConfigurator: (Action<Socket>)SocketConfigurator));

        return new MongoClient(clientSettings);

我检查了SO问题的数量，包括MongoDB C# 2.0 TimeoutException和SocketTimeout with opened connection in MongoDB，但建议似乎要么过时（在当前版本的驱动程序中报告固定）或者没有永久的正面效果（在连接字符串中设置超时，即connectTimeoutMS = 90000＆socketTimeoutMS = 90000＆maxIdleTimeMS = 90000）。第二个（设置tcp_keepalive_time）似乎不适用于Azure中的docker容器。请帮忙。

Answer 1

你尝试过像这样设置：

var client = new MongoClient(new MongoClientSettings
{
       Server = new MongoServerAddress("xxxx"),
       ClusterConfigurator = builder =>
       {
             builder.ConfigureCluster(settings => settings.With(serverSelectionTimeout: TimeSpan.FromSeconds(10)));
       }
});