无法将日志发送到OpenTelemetry后端（在.Net Framework 4.8中使用Serilog）

Question

我正在 .Net Framework 4.8 中使用 Serilog 将日志发送到 OpenTelemetry。我使用 Elastic 作为 OpenTelemetry 后端。我可以发送痕迹，但不能发送日志。请找到我的下面的代码，它将日志写入文件，但不将日志发送到 OpenTelemetry。有人可以帮忙吗？

    // TRACES ----- WORKING 
    _tracerProvider = Sdk.CreateTracerProviderBuilder()
   .AddAspNetInstrumentation()
   .AddHttpClientInstrumentation()
   .AddOtlpExporter(config =>
   {
       config.Endpoint = new Uri("https://abcd.es.io:443");
       config.Headers = "Authorization=ApiKey xyz";
   })
   .AddSource("SK")
   .SetResourceBuilder(
       ResourceBuilder.CreateDefault()
           .AddService(serviceName: "NLogger", serviceVersion: "1.0.0")
           .AddAttributes(resourceAttributes))
   .Build();

   var endpoint = "https://abcd.es.io:443/v1/logs";
   var protocol = OtlpProtocol.HttpProtobuf;

另一方面，痕迹不起作用：

   // LOGGING --- NOT WORKING
   Log.Logger = new LoggerConfiguration()
   .MinimumLevel.Error()
   .WriteTo.Console()
   .WriteTo.File(@"c:\tt\1.txt")
   .WriteTo.OpenTelemetry(
   options => {
        options.Endpoint = endpoint;
        options.Protocol = protocol;
        options.IncludedData =
                IncludedData.SpanIdField
                | IncludedData.TraceIdField
                | IncludedData.MessageTemplateTextAttribute
                | IncludedData.MessageTemplateMD5HashAttribute;
        options.ResourceAttributes = new Dictionary<string, object>
        {
            ["service.name"] = "NLogger",
            ["index"] = 10,
            ["flag"] = true,
            ["pi"] = 3.14
         };
         options.Headers = new Dictionary<string, string>
         {
            ["Authorization"] = "Basic xyz", // user:abc123
         };
         options.BatchingOptions.BatchSizeLimit = 2;
         options.BatchingOptions.Period = TimeSpan.FromSeconds(2);
         options.BatchingOptions.QueueLimit = 10;
     })
     .CreateLogger();

我在授权标头中尝试了“ApiKey”而不是“Basic”，但仍然不起作用。但它成功地将日志写入文本文件。请帮忙。

关注此页面https://github.com/serilog/serilog-sinks-opentelemetry/blob/dev/example/Example/Program.cs作为参考

Answer 1

Elastic APM 服务器使用承载身份验证，因此您的代码应更新为在使用秘密令牌时发送以下标头：

["Authorization"] = "Bearer xyz"

其中 xyz 是从 APM 服务器检索到的秘密令牌。

请参阅 https://www.elastic.co/guide/en/apm/get-started/7.15/open-telemetry-elastic.html#instrument-apps-apm-server