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Changelog

All notable changes to this component are documented in this file.

The format is based on Keep a Changelog. This component adheres to Semantic Versioning.

Unreleased

Added

  • Support for .NET9.
  • Support for RabbitMQ.Client traces instrumentation for versions 7.0.0+.

Changed

Dependency updates

Deprecated

Removed

  • Support for .NET 6 and .NET 7. Both framework reached end of support.
  • Support for macOS Monterey 12 x64. macOs libraries are built and tested against macOS Ventura 13 x64.

Fixed

1.9.0

Changed

  • Musl-based (Alpine) libraries are compiled on Alpine v3.20.

Dependency updates

  • Following packages updated
    • OpenTelemetry.Instrumentation.Wcf from 1.0.0-rc.17 to 1.0.0-rc.18,
  • .NET Framework only, following packages updated
    • Google.Protobuf updated from 3.28.2 to 3.28.3,
    • Grpc.Core.Api from 2.66.0 to 2.67.0,
    • Microsoft.Extensions.DependencyInjection from 8.0.0 to 8.0.1,
    • Microsoft.Extensions.DependencyInjection.Abstractions from 8.0.1 to 8.0.2,
    • System.Diagnostics.DiagnosticSource from 8.0.0 to 8.0.1,
    • System.Text.Json from 8.0.4 to 8.0.5.

Deprecated

  • Support for macOS Monterey 12 x64. All further releases will be supporting macOS Ventura 13 x64 and newer.

Removed

  • Drop support for following environment variables: OTEL_DOTNET_AUTO_TRACES_CONSOLE_EXPORTER_ENABLED, OTEL_DOTNET_AUTO_METRICS_CONSOLE_EXPORTER_ENABLED, and OTEL_DOTNET_AUTO_LOGS_CONSOLE_EXPORTER_ENABLED. Instead, use console as one of the values for the following environment variables: OTEL_TRACES_EXPORTER OTEL_METRICS_EXPORTER OTEL_LOGS_EXPORTER.

1.8.0

Added

  • Support for Operating System resource detector.
  • Support for RabbitMQ.Client traces instrumentation for versions 6.0.0-6.*.*
  • Support for NServiceBus 9.1+ metrics instrumentations.
  • Added support for OTEL_TRACES_EXPORTER, OTEL_METRICS_EXPORTER, OTEL_LOGS_EXPORTER to handle comma-separated list.
  • The environment variables OTEL_TRACES_EXPORTER, OTEL_METRICS_EXPORTER, and OTEL_LOGS_EXPORTER now support configuring console exporters for traces, metrics, and logs, respectively.
  • Support signal specific OTLP exporter variables (See docs):
    • OTEL_EXPORTER_OTLP_TRACES_ENDPOINT,
    • OTEL_EXPORTER_OTLP_TRACES_HEADERS,
    • OTEL_EXPORTER_OTLP_TRACES_TIMEOUT,
    • OTEL_EXPORTER_OTLP_TRACES_PROTOCOL,
    • OTEL_EXPORTER_OTLP_METRICS_ENDPOINT,
    • OTEL_EXPORTER_OTLP_METRICS_HEADERS,
    • OTEL_EXPORTER_OTLP_METRICS_TIMEOUT,
    • OTEL_EXPORTER_OTLP_METRICS_PROTOCOL,
    • OTEL_EXPORTER_OTLP_LOGS_ENDPOINT,
    • OTEL_EXPORTER_OTLP_LOGS_HEADERS,
    • OTEL_EXPORTER_OTLP_LOGS_TIMEOUT,
    • OTEL_EXPORTER_OTLP_LOGS_PROTOCOL.
  • Support for air-gapped installations through DOWNLOAD_DIR or LOCAL_PATH arguments to otel-dotnet-auto-install.sh.
  • Added OTEL_DOTNET_AUTO_LOGGER to select preferred sink for AutoInstrumentation diagnostic logs.
  • Issue a warning before publish if auto-instrumentation NuGet package is referenced and runtime identifier is not specified.

Changed

  • More restrictive handling of invalid values in comma-separated lists. When invalid value is recognized (unsupported option, supported option with leading or trailing whitespaces, empty value, duplicate) warning is logged, and if FailFast is enabled, exception is thrown.
  • Referencing OpenTelemetry.AutoInstrumentation manually no longer visibly injects instrumentation scripts into projects in an editor's solution window.

Dependency updates

  • Following packages updated
    • MongoDB.Driver.Core.Extensions.DiagnosticSources from 1.4.0 to 1.5.0,
    • OpenTelemetry.Exporter.Prometheus.HttpListener from 1.9.0-beta.1 to 1.9.0-beta.2,
    • OpenTelemetry.Instrumentation.Process from 0.5.0-beta.6 to 0.5.0-beta.7,
    • OpenTelemetry.Resources.Azure from 1.0.0-beta.8 to 1.0.0-beta.9,
    • OpenTelemetry.Resources.Host from 0.1.0-beta.2 to 0.1.0-beta.3,
    • OpenTelemetry.Resources.Process from 0.1.0-beta.2 to 0.1.0-beta.3,
    • OpenTelemetry.Shims.OpenTracing from 1.9.0-beta.1 to 1.9.0-beta.2.
  • .NET only, following packages updated
    • OpenTelemetry.Instrumentation.StackExchangeRedis from 1.0.0-rc9.15 to 1.9.0-beta.1.
  • .NET Framework only, following packages updated
    • Google.Protobuf updated from 3.27.1 to 3.28.2,
    • Grpc.Core.Api from 2.63.0 to 2.66.0,
    • Microsoft.Extensions.Configuration.Binder from 8.0.1 to 8.0.2,
    • System.Text.Json from 8.0.3 to 8.0.4.

Deprecated

  • Environment variables OTEL_DOTNET_AUTO_TRACES_CONSOLE_EXPORTER_ENABLED, OTEL_DOTNET_AUTO_METRICS_CONSOLE_EXPORTER_ENABLED, and OTEL_DOTNET_AUTO_LOGS_CONSOLE_EXPORTER_ENABLED are now marked as deprecated.

Removed

  • Support for macOS Big Sur 11 x64. macOs libraries are built and tested against macOS Monterey 12 x64.
  • Support for MongoDB.Driver.Core < 2.28.0.
  • Support for StackExchange.Redis < 2.6.122.

Fixed

  • Initialize WCF instrumentation only when necessary (#3650)

1.7.0

Added

  • Support for capturing HTTP headers for following traces instrumentations:
    • ASP.NET, configurable by OTEL_DOTNET_AUTO_TRACES_ASPNET_INSTRUMENTATION_CAPTURE_REQUEST_HEADERS and OTEL_DOTNET_AUTO_TRACES_ASPNET_INSTRUMENTATION_CAPTURE_RESPONSE_HEADERS,
    • ASP.NET Core, configurable by OTEL_DOTNET_AUTO_TRACES_ASPNETCORE_INSTRUMENTATION_CAPTURE_REQUEST_HEADERS and OTEL_DOTNET_AUTO_TRACES_ASPNETCORE_INSTRUMENTATION_CAPTURE_RESPONSE_HEADERS,
    • HTTP Client, configurable by OTEL_DOTNET_AUTO_TRACES_HTTP_INSTRUMENTATION_CAPTURE_REQUEST_HEADERS and OTEL_DOTNET_AUTO_TRACES_HTTP_INSTRUMENTATION_CAPTURE_RESPONSE_HEADERS.
  • Support for capturing gRPC metadata for Grpc.Net.Client traces instrumentation. It can by configured by OTEL_DOTNET_AUTO_TRACES_GRPCNETCLIENT_INSTRUMENTATION_CAPTURE_REQUEST_METADATA and OTEL_DOTNET_AUTO_TRACES_GRPCNETCLIENT_INSTRUMENTATION_CAPTURE_RESPONSE_METADATA.
  • Support for Oracle.ManagedDataAccess.Core and Oracle.ManagedDataAccess traces instrumentation from 23.4.0 together with support for OTEL_DOTNET_AUTO_ORACLEMDA_SET_DBSTATEMENT_FOR_TEXT environment variable. ARM64 platform is not supported.
  • Add support for NServiceBus 9.x metrics and traces instrumentations.

Changed

  • Musl-based (Alpine) libraries are compiled on Alpine v3.19.
  • Do not use message creation context as a parent for consumer spans for Confluent.Kafka client instrumentation. See the issue for details.
  • Do not create consumer spans related to PartitionEOF events for Confluent.Kafka client instrumentation.
  • Following properties can be set before calling plugins:
    • OpenTelemetry.Instrumentation.AspNetCore.AspNetCoreTraceInstrumentationOptions.EnrichWithHttpRequest,
    • OpenTelemetry.Instrumentation.AspNetCore.AspNetCoreTraceInstrumentationOptions.EnrichWithHttpResponse,
    • OpenTelemetry.Instrumentation.AspNet.AspNetTraceInstrumentationOptions.EnrichWithHttpRequest,
    • OpenTelemetry.Instrumentation.AspNet.AspNetTraceInstrumentationOptions.EnrichWithHttpResponse,
    • OpenTelemetry.Instrumentation.GrpcNetClient.GrpcClientTraceInstrumentationOptions.EnrichWithHttpRequestMessage,
    • OpenTelemetry.Instrumentation.GrpcNetClient.GrpcClientTraceInstrumentationOptions.EnrichWithHttpResponseMessage,
    • OpenTelemetry.Instrumentation.Http.HttpClientTraceInstrumentationOptions.EnrichWithHttpRequestMessage,
    • OpenTelemetry.Instrumentation.Http.HttpClientTraceInstrumentationOptions.EnrichWithHttpWebRequest,
    • OpenTelemetry.Instrumentation.Http.HttpClientTraceInstrumentationOptions.EnrichWithHttpResponseMessage,
    • OpenTelemetry.Instrumentation.Http.HttpClientTraceInstrumentationOptions.EnrichWithHttpWebResponse.

Dependency updates

  • Updated Core components: 1.9.0.
  • Following packages updated
    • OpenTelemetry.Exporter.Prometheus.HttpListener from 1.8.0-rc.1 to 1.9.0-beta.1,
    • OpenTelemetry.Instrumentation.GrpcNetClient from 1.8.0-beta.1 to 1.9.0-beta.1,
    • OpenTelemetry.Instrumentation.Http from 1.8.1 to 1.9.0,
    • OpenTelemetry.Instrumentation.Process from 0.5.0-beta.5 to 0.5.0-beta.6,
    • OpenTelemetry.Instrumentation.Quartz from 1.0.0-beta.2 to 1.0.0-beta.3,
    • OpenTelemetry.Instrumentation.Runtime from 1.8.0 to 1.9.0,
    • OpenTelemetry.Instrumentation.SqlClient from 1.8.0-beta.1 to 1.9.0-beta.1,
    • OpenTelemetry.Instrumentation.StackExchangeRedis from 1.0.0-rc9.14 to 1.0.0-rc9.15,
    • OpenTelemetry.Instrumentation.Wcf from 1.0.0-rc.16 to 1.0.0-rc.17,
    • OpenTelemetry.Shims.OpenTracing from 1.7.0-beta.1 to 1.9.0-beta.1,
    • OpenTelemetry.Resources.Azure from 1.0.0-beta.7 to 1.0.0-beta.8,
    • OpenTelemetry.Resources.Host from 0.1.0-beta.1 to 0.1.0-beta.2.
    • OpenTelemetry.Resources.Process from 0.1.0-beta.1 to 0.1.0-beta.2.
    • OpenTelemetry.Resources.ProcessRuntime from 0.1.0-beta.1 to 0.1.0-beta.2.
  • .NET only, following packages updated
    • OpenTelemetry.Instrumentation.AspNetCore from 1.8.1 to 1.9.0,
    • OpenTelemetry.Instrumentation.EntityFrameworkCore from 1.0.0-beta.11 to 1.0.0-beta.12,
    • OpenTelemetry.Resources.Container from 1.0.0-beta.7 to 1.0.0-beta.9.
  • .NET Framework only, following packages updated
    • OpenTelemetry.Instrumentation.AspNet from 1.8.0-beta.2 to 1.9.0-beta.1.

Deprecated

  • Support for macOS Big Sur 11 x64. All further releases will be supporting macOS Monterey 12 x64 and newer.

1.6.0

Changed

  • To prevent sensitive information from leaking through query strings, the following instrumentations redact by default any value detected in query string components when building the url.query or the url.full attributes: OpenTelemetry.Instrumentation.Http, OpenTelemetry.Instrumentation.AspNetCore, OpenTelemetry.Instrumentation.AspNet. For example, ?key1=value1&key2=value2 becomes ?key1=Redacted&key2=Redacted. You can customize this behavior through the environment variables. See the instrumentation options table for details.

Dependency updates

  • Following packages updated
    • OpenTelemetry.Instrumentation.Http from 1.8.0 to 1.8.1.
  • Following packages replaced
    • OpenTelemetry.ResourceDetectors.Azure version 1.0.0-beta.6 by OpenTelemetry.Resources.Azure version 1.0.0-beta.7,
    • OpenTelemetry.ResourceDetectors.Host version 0.1.0-alpha.3 by OpenTelemetry.Resources.Host version 0.1.0-beta.1,
    • OpenTelemetry.ResourceDetectors.Process version 0.1.0-alpha.3 by OpenTelemetry.Resources.Process version 0.1.0-beta.1,
    • OpenTelemetry.ResourceDetectors.ProcessRuntime version 0.1.0-alpha.3 by OpenTelemetry.Resources.ProcessRuntime version 0.1.0-beta.1.
  • .NET only, following packages updated
    • Microsoft.Extensions.Configuration.Binder from 8.0.0 to 8.0.1,
    • OpenTelemetry.Instrumentation.AspNetCore from 1.8.0 to 1.8.1.
  • .NET only, following packages replaced:
    • OpenTelemetry.ResourceDetectors.Container version 1.0.0-beta.7 by OpenTelemetry.Resources.Container version 1.0.0-beta.8.
  • .NET Framework only, following packages updated
    • Grpc.Core.Api from 2.62.0 to 2.63.0,
    • OpenTelemetry.Instrumentation.AspNet from 1.8.0-beta.1 to 1.8.0-beta.2.

Fixed

  • Stop creating receive consumer spans for consume attempts that returned no message. For details, see #3367

1.5.0

Added

  • .NET only, warning in logs about End of Support date and upcoming End of Support date for .NET version.
  • Experimental support for ARM64 on Ubuntu, Alpine and Debian based images.
  • Experimental ARM64 support for the OpenTelemetry.AutoInstrumentation NuGet package.

Changed

  • Changed supported method parameters for plugins
    • from OpenTelemetry.Instrumentation.AspNet.AspNetInstrumentationOptions to OpenTelemetry.Instrumentation.AspNet.AspNetTraceInstrumentationOptions.

Dependency updates

  • Updated Core components: 1.8.0.
  • Following packages updated
    • MongoDB.Driver.Core.Extensions.DiagnosticSources from 1.3.0 to 1.4.0.
    • OpenTelemetry.Exporter.Prometheus.HttpListener from 1.7.0-rc.1 to 1.8.0-rc.1,
    • OpenTelemetry.Instrumentation.Http from 1.7.1 to 1.8.0,
    • OpenTelemetry.Instrumentation.Process from 0.5.0-beta.4 to 0.5.0-beta.5,
    • OpenTelemetry.Instrumentation.Quartz from 1.0.0-beta.1 to 1.0.0-beta.2,
    • OpenTelemetry.Instrumentation.Runtime from 1.7.0 to 1.8.0,
    • OpenTelemetry.Instrumentation.SqlClient from 1.7.0-beta.1 to 1.8.0-beta.1,
    • OpenTelemetry.Instrumentation.StackExchangeRedis from 1.0.0-rc9.13 to 1.0.0-rc9.14,
    • OpenTelemetry.Instrumentation.Wcf from 1.0.0-rc.15 to 1.0.0-rc.16,
    • OpenTelemetry.ResourceDetectors.Azure from 1.0.0-beta.5 to 1.0.0-beta.6,
    • OpenTelemetry.ResourceDetectors.Host from 0.1.0-alpha.2 to 0.1.0-alpha.3.
    • OpenTelemetry.ResourceDetectors.Process from 0.1.0-alpha.2 to 0.1.0-alpha.3.
    • OpenTelemetry.ResourceDetectors.ProcessRuntime from 0.1.0-alpha.2 to 0.1.0-alpha.3.
  • .NET only, following packages updated
    • OpenTelemetry.Instrumentation.AspNetCore from 1.7.1 to 1.8.0,
    • OpenTelemetry.Instrumentation.EntityFrameworkCore from 1.0.0-beta.10 to 1.0.0-beta.11,
    • OpenTelemetry.ResourceDetectors.Container from 1.0.0-beta.6 to 1.0.0-beta.7.
  • .NET Framework only, following packages updated
    • Google.Protobuf updated from 3.25.2 to 3.27.1,
    • Grpc.Core.Api from 2.60.0 to 2.62.0,
    • Microsoft.Extensions.DependencyInjection.Abstractions from 8.0.0 to 8.0.1,
    • Microsoft.Extensions.Options from 8.0.1 to 8.0.2,
    • Microsoft.Extensions.Logging.Abstractions from 8.0.0 to 8.0.1,
    • OpenTelemetry.Instrumentation.AspNet from 1.7.0-beta.2 to 1.8.0-beta.1,
    • System.Text.Json from 8.0.1 to 8.0.3.

Fixed

  • Resolved a crash issue caused by System.IO.FileLoadException for Microsoft.Extensions*.dll libraries. This issue was due to a conflict with runtime store libraries, impacting applications with mismatched dependency versions. This fix enhances stability by addressing the underlying compatibility concerns. For details see: (#3075, #3168)

1.4.0

Added

  • Support for OTEL_DOTNET_AUTO_SQLCLIENT_SET_DBSTATEMENT_FOR_TEXT and OTEL_DOTNET_AUTO_ENTITYFRAMEWORKCORE_SET_DBSTATEMENT_FOR_TEXT environment variables which controls whether the db.statement attribute is set for SQL statements for SQL Client and Entity Framework Core instrumentations. The default value for both environment variables is false due to the risk of leaking sensitive information in the collected database queries.

Changed

  • Changed supported method parameters for plugins
    • from OpenTelemetry.Instrumentation.GrpcNetClient.GrpcClientInstrumentationOptions to OpenTelemetry.Instrumentation.GrpcNetClient.GrpcClientTraceInstrumentationOptions,
    • from OpenTelemetry.Instrumentation.SqlClient.SqlClientInstrumentationOptions to OpenTelemetry.Instrumentation.SqlClient.SqlClientTraceInstrumentationOptions.

Dependency updates

  • Following packages updated
    • OpenTelemetry.ResourceDetectors.Azure from 1.0.0-beta.4 to 1.0.0-beta.5,
    • OpenTelemetry.ResourceDetectors.Container from 1.0.0-beta.5 to 1.0.0-beta.6.
    • OpenTelemetry.Instrumentation.Http from 1.7.0 to 1.7.1,
    • OpenTelemetry.Instrumentation.SqlClient from 1.6.0-beta.3 to 1.7.0-beta.1,
    • OpenTelemetry.Instrumentation.Wcf from 1.0.0-rc.14 to 1.0.0-rc.15,
  • .NET only, following packages updated
    • OpenTelemetry.Instrumentation.AspNetCore from 1.7.0 to 1.7.1,
    • OpenTelemetry.Instrumentation.EntityFrameworkCore from 1.0.0-beta.9 to 1.0.0-beta.10,
    • OpenTelemetry.Instrumentation.GrpcNetClient from 1.6.0-beta.3 to 1.7.0-beta.1.
  • .NET Framework only, following packages updated
    • OpenTelemetry.Instrumentation.AspNet from 1.7.0-beta.1 to 1.7.0-beta.2.

Removed

  • Container resource detector will be not executed on .NET Framework. It was not giving any results before changes.

Fixed

  • Fix ASP.NET Core traces instrumentation for .NET7. It is now using native support by Microsoft.AspNetCore instead of OpenTelemetry.Instrumentation.AspNetCore.

1.3.0

Added

  • Support for Host, Process, and Process Runtime resource detectors.
  • Support for OpenTelemetry.Instrumentation.AspNet.AspNetMetricsInstrumentationOptions for plugins.
  • Support for Confluent.Kafka traces instrumentation from 1.4.0 to 3.0.0 (excluding).

Changed

  • Changed minimal supported version of Microsoft.Extensions.Logging for ILOGGER instrumentation from 6.0.0 to 8.0.0.
  • Changed supported method parameters for plugins
    • from OpenTelemetry.Instrumentation.AspNetCore.AspNetCoreInstrumentationOptions to OpenTelemetry.Instrumentation.AspNetCore.AspNetCoreTraceInstrumentationOptions,
    • from OpenTelemetry.Instrumentation.Http.HttpClientInstrumentationOptions to OpenTelemetry.Instrumentation.Http.HttpClientTraceInstrumentationOptions.

Dependency updates

  • Updated Core components: 1.7.0.
  • Following packages updated
    • OpenTelemetry.Exporter.Prometheus.HttpListener from 1.6.0-rc.1 to 1.7.0-rc.1,
    • OpenTelemetry.Instrumentation.Http from 1.6.0 to 1.7.0,
    • OpenTelemetry.Instrumentation.Process from 0.5.0-beta.3 to 0.5.0-beta.4,
    • OpenTelemetry.Instrumentation.Quartz from 1.0.0-alpha.3 to 1.0.0-beta.1,
    • OpenTelemetry.Instrumentation.Runtime from 1.5.1 to 1.7.0,
    • OpenTelemetry.Instrumentation.SqlClient from 1.6.0-beta.2 to 1.6.0-beta.3,
    • OpenTelemetry.Instrumentation.StackExchangeRedis from 1.0.0-rc9.12 to 1.0.0-rc9.13,
    • OpenTelemetry.Instrumentation.Wcf from 1.0.0-rc.13 to 1.0.0-rc.14,
    • OpenTelemetry.Shims.OpenTracing from 1.6.0-beta.1 to 1.7.0-beta.1,
    • OpenTelemetry.ResourceDetectors.Azure from 1.0.0-beta.3 to 1.0.0-beta.4,
    • OpenTelemetry.ResourceDetectors.Container from 1.0.0-beta.4 to 1.0.0-beta.5,
    • OpenTelemetry.ResourceDetectors.ProcessRuntime from 0.1.0-alpha.1 to 0.1.0-alpha.2.
  • .NET only, following packages updated
    • Google.Protobuf updated from 3.19.4 to 3.22.5.
    • Microsoft.Extensions.Configuration from 3.1.0 to 8.0.0,
    • Microsoft.Extensions.Configuration.Abstractions from 3.1.0 to 8.0.0,
    • Microsoft.Extensions.Configuration.Binder from 3.1.0 to 8.0.0,
    • Microsoft.Extensions.DependencyInjection from 3.1.0 to 8.0.0,
    • Microsoft.Extensions.DependencyInjection.Abstractions from 3.1.0 to 8.0.0,
    • Microsoft.Extensions.Logging from 6.0.0 to 8.0.0,
    • Microsoft.Extensions.Options from 3.1.0 to 8.0.0,
    • Microsoft.Extensions.Options.ConfigurationExtensions from 3.1.0 to 8.0.0,
    • Microsoft.Extensions.Primitives from 3.1.0 to 8.0.0,
    • OpenTelemetry.Instrumentation.AspNetCore from 1.6.0-beta.3 to 1.7.0,
    • OpenTelemetry.Instrumentation.EntityFrameworkCore from 1.0.0-beta.8 to 1.0.0-beta.9.
  • .NET Framework only, following packages updated
    • Google.Protobuf updated from 3.25.1 to 3.25.2,
    • Grpc.Core.Api from 2.59.0 to 2.60.0,
    • Microsoft.Extensions.Configuration.Binder from 8.0.0 to 8.0.1,
    • Microsoft.Extensions.Options from 8.0.0 to 8.0.1,
    • OpenTelemetry.Instrumentation.AspNet from 1.6.0-beta.2 to 1.7.0-beta.1,
    • System.Text.Json from 8.0.0 to 8.0.1.

Removed

Removed support for Microsoft.Extensions.Logging for ILOGGER for versions older than 8.0.0.

Fixed

  • Set service.name resource attribute before invoking the plugin.

1.2.0

Added

  • Add support for .NET 8.
  • Added support for System.Data.SqlClient (NuGet package) traces instrumentation from 4.8.5.
  • Ability to update installation via PS module (OpenTelemetry.DotNet.Auto.psm1).

Changed

Dependency updates

  • .NET Framework only, Grpc.Core.Api updated from 2.57.0 to 2.59.0.
  • .NET only, OpenTelemetry.Instrumentation.EntityFrameworkCore updated from 1.0.0-beta.7 to 1.0.0-beta.8.
  • .NET only, OpenTelemetry.Instrumentation.AspNetCore updated from 1.5.1-beta.1 to 1.6.0-beta.3.
  • OpenTelemetry.Instrumentation.GrpcNetClient, and OpenTelemetry.Instrumentation.Http updated from 1.5.1-beta.1 to 1.6.0-beta.3.
  • OpenTelemetry.Instrumentation.SqlClient updated from 1.5.1-beta.1 to 1.6.0-beta.2.
  • .NET only, OpenTelemetry.Instrumentation.StackExchangeRedis updated from 1.0.0-rc9.10 to 1.0.0-rc9.12.
  • .NET Framework only, Google.Protobuf updated from 3.24.4 to 3.25.1.
  • .NET Framework only, OpenTelemetry.Instrumentation.AspNet and OpenTelemetry.Instrumentation.AspNet.TelemetryHttpModule updated from 1.6.0-beta.1 to 1.6.0-beta.2.
  • OpenTelemetry.Instrumentation.Wcf updated from 1.0.0-rc.12 to 1.0.0-rc.13.
  • .NET Framework only, following packages updated
    • Microsoft.Bcl.AsyncInterfaces from 7.0.0 to 8.0.0,
    • Microsoft.Extensions.Configuration from 7.0.0 to 8.0.0,
    • Microsoft.Extensions.Configuration.Abstractions from 7.0.0 to 8.0.0,
    • Microsoft.Extensions.Configuration.Binder from 7.0.4 to 8.0.0,
    • Microsoft.Extensions.DependencyInjection from 7.0.0 to 8.0.0,
    • Microsoft.Extensions.DependencyInjection.Abstractions from 7.0.0 to 8.0.0,
    • Microsoft.Extensions.Logging from 7.0.0 to 8.0.0,
    • Microsoft.Extensions.Options from 7.0.1 to 8.0.0,
    • Microsoft.Extensions.Options.ConfigurationExtensions from 7.0.0 to 8.0.0,
    • Microsoft.Extensions.Primitives from 7.0.0 to 8.0.0,
    • System.Text.Encodings.Web from 7.0.0 to 8.0.0,
    • System.Text.Json from 7.0.3 to 8.0.0.
  • Following packages updated
    • Microsoft.Extensions.Logging.Abstractions from 7.0.1 to 8.0.0,
    • Microsoft.Extensions.Logging.Configuration from 7.0.0 to 8.0.0,
    • System.Diagnostics.DiagnosticSource from 7.0.2 to 8.0.0.

Removed

  • Removed support for OpenTelemetry.Instrumentation.AspNetCore.AspNetCoreMetricsInstrumentationOptions for plugins.

1.1.0

Added

  • Added support for Elastic.Transport traces instrumentation 0.4.16+. Elastic.Clients.Elasticsearch 8.10.0+ traces instrumentation is covered by Elastic.Transport traces instrumentation.
  • Added telemetry.distro.name resource attribute. The value is set to opentelemetry-dotnet-instrumentation.

Changed

  • Change telemetry resource attribute name from telemetry.auto.version to telemetry.distro.version.

Dependency updates

  • .NET Framework only, Google.Protobuf updated from 3.24.3 to 3.24.4.
  • .NET Framework only, OpenTelemetry.Instrumentation.AspNet and OpenTelemetry.Instrumentation.AspNet.TelemetryHttpModule updated from 1.0.0-rc9.9 to 1.6.0-beta.1.

Fixed

  • Fixed log emission issue which resulted in same logs being exported multiple times for ASP.NET Core 6.0 apps when bytecode instrumentation was enabled and WebApplicationBuilder was used.

1.0.2

Fixed

  • Fixed log emission issue for ASP.NET Core 6.0 apps and enhanced diagnostics.

1.0.1

Changed

Dependency updates

  • .NET Framework only, Google.Protobuf updated from 3.24.2 to 3.24.3.
  • OpenTelemetry.ResourceDetectors.Azure updated from 1.0.0-beta.2 to 1.0.0-beta.3.

Fixed

  • Fixed Rule checking System.Diagnostics.DiagnosticSource version for net7.0 failing on correct configuration #2950.

1.0.0

This release is built on top of OpenTelemetry .NET:

Added

  • Added support for Azure SDK traces instrumentation on .NET Framework.
  • Added support for WCFCLIENT instrumentation on .NET.

Changed

  • Updated Core components: 1.6.0.
  • MySql.Data instrumentation is now supported from version 8.1.0 working on .NET.
  • OpenTracing spans are registered under opentracing-shim name instead of OpenTelemetry.AutoInstrumentation.OpenTracingShim.

Removed

  • Removed MySql.Data instrumentation for versions 6.10.7-8.0.33.
  • Removed support for OpenTelemetry.Instrumentation.MySqlData.MySqlDataInstrumentationOptions for plugins.

Fixed

  • Fixed instrumentation loading issue where delayed instrumentation initialization could not bootstrap both traces and metrics. Affected scope: ASP.NET Core and HttpClient instrumentations.
  • Fixed ILogger log instrumentation issue that caused logs to be exported multiple times.

1.0.0-rc.2

Added

  • Support for Azure App Service resource detector.

  • Added BeforeConfigureTracerProvider, BeforeConfigureMeterProvider, TracerProviderInitialized and MeterProviderInitialized for plugins. See plugins documentation for details.

  • Added support for Azure SDK traces instrumentation on .NET.

Changed

  • In plugins ConfigureTracerProvider and ConfigureMeterProvider are changed now to AfterConfigureTracerProvider and AfterConfigureMeterProvider. See plugins documentation for details.
  • Minimal version of Grpc.Net.Client supported on .NET updated to 2.52.0.

Fixed

  • OTEL_DOTNET_AUTO_EXCLUDE_PROCESSES works correctly when .NET CLR Profiler is not enabled.
  • Fixed manual tracing when instrumented project is referencing System.Diagnostics.DiagnosticSource 7.0.2 #2780.

1.0.0-rc.1

This release is built on top of OpenTelemetry .NET:

Added

  • The environment variable OTEL_DOTNET_AUTO_FAIL_FAST_ENABLED could be used to enable or disable the failing process when automatic instrumentation cannot be executed.
  • Add support for MySqlConnector traces instrumentation.

Changed

  • Updated Core components: 1.5.1.
  • ASP.NET instrumentation no longer requires manual modification of config files to include TelemetryHttpModule.
  • Parameter for ConfigureTracesOptions extension point for StackExchangeRedis changed type from OpenTelemetry.Instrumentation.StackExchangeRedis.StackExchangeRedisCallsInstrumentationOptions to OpenTelemetry.Instrumentation.StackExchangeRedis.StackExchangeRedisInstrumentationOptions.
  • WCF instrumentation split to WCFCLIENT and WCFSERVICE. Both supported only on .NET Framework.
  • WCFCLIENT and WCFSERVICE no longer requires manual modification of config files to include TelemetryEndpointBehaviorExtensionElement.
  • GraphQL instrumentation is now supported from version 7.5.0 working on .NET.

Removed

  • Removed WCF instrumentation for Core WCF Client working on .NET.
  • Removed GraphQL instrumentation for versions 2.3.0-2.4.*.

Known issues

  • Lack of support for MySql.Data 8.0.33. See #2542.

0.7.0

Added

  • Stability status added to the documentation.
  • Support OTEL_LOG_LEVEL to configure SDK logging level.
  • Fallback for the service name. If the service name is not configured, the automatic instrumentation uses the entry assembly name instead, only falling back to the process name in case of an error. If the application uses .NET Framework and is hosted on IIS, the service name is determined using SiteName/ApplicationVirtualPath.
  • Add MongoDB instrumentation support for .NET Framework.
  • Added a rule engine to validate potential conflicts and unsupported scenarios, ensuring back off instead of crashing, improving overall stability.
  • The environment variable OTEL_DOTNET_AUTO_RULE_ENGINE_ENABLED could be used to enable or disable the rule engine.
  • Support for Container resource detector.
  • Support for enabling well known resource detectors by using the environment variables
    • OTEL_DOTNET_AUTO_RESOURCE_DETECTOR_ENABLED
    • OTEL_DOTNET_AUTO_{0}_RESOURCE_DETECTOR_ENABLED.

Removed

  • Remove support for enabling debugging mode with OTEL_DOTNET_AUTO_DEBUG.
  • Removed OTEL_DOTNET_AUTO_INTEGRATIONS_FILE as a required environment variable for bytecode instrumentation setup

0.6.0

This release is built on top of OpenTelemetry .NET:

Changed

0.6.0-beta.2

This beta release is built on top of OpenTelemetry .NET:

Added

  • Support for systems with glibc versions 2.17-2.29.

Changed

Removed

  • Remove support for plugin method ConfigureMetricsOptions(OpenTelemetry.Instrumentation.Process.ProcessInstrumentationOptions).

Fixed

  • Fix location of OpenTelemetry.AutoInstrumentation.Native.so for linux-musl-x64.
  • Fix issues when instrumenting dotnet CLI #1477.

0.6.0-beta.1

This beta release is built on top of OpenTelemetry .NET:

Added

  • Support configuring OTEL_* settings using App.config and Web.config.
  • Add support for Quartz traces instrumentation.
  • Add support for EntityFrameworkCore traces instrumentations.
  • Add plugin support for ResourceBuilder ConfigureResource(ResourceBuilder builder).

Changed

  • Updated Core components: 1.4.0-rc.3

  • Move OpenTelemetry.AutoInstrumentation.Native.so to linux-x64 directory in tracer-home for Linux glibc, OpenTelemetry.AutoInstrumentation.Native.so to linux-musl-x64 for Linux musl and OpenTelemetry.AutoInstrumentation.Native.dylib to osx-x64 for MacOS.

  • Change the way to manage enabled instrumentations. The following environmental variables:

    • OTEL_DOTNET_AUTO_TRACES_ENABLED_INSTRUMENTATIONS,
    • OTEL_DOTNET_AUTO_TRACES_DISABLED_INSTRUMENTATIONS,
    • OTEL_DOTNET_AUTO_METRICS_ENABLED_INSTRUMENTATIONS,
    • OTEL_DOTNET_AUTO_METRICS_DISABLED_INSTRUMENTATIONS,
    • OTEL_DOTNET_AUTO_LOGS_ENABLED_INSTRUMENTATIONS,
    • OTEL_DOTNET_AUTO_LOGS_DISABLED_INSTRUMENTATIONS

    are replaced by:

    • OTEL_DOTNET_AUTO_INSTRUMENTATION_ENABLED,
    • OTEL_DOTNET_AUTO_TRACES_INSTRUMENTATION_ENABLED,
    • OTEL_DOTNET_AUTO_TRACES_{0}_INSTRUMENTATION_ENABLED,
    • OTEL_DOTNET_AUTO_METRICS_INSTRUMENTATION_ENABLED,
    • OTEL_DOTNET_AUTO_METRICS_{0}_INSTRUMENTATION_ENABLED,
    • OTEL_DOTNET_AUTO_LOGS_INSTRUMENTATION_ENABLED,
    • OTEL_DOTNET_AUTO_LOGS_{0}_INSTRUMENTATION_ENABLED.

  • Change instrumentation id for ASP.NET Core traces and metrics instrumentation from AspNet to ASPNETCORE.

Fixed

  • Fix console error messages Log: Exception creating FileSink #1885

0.5.1-beta.3

This beta release is built on top of OpenTelemetry .NET:

Added

  • Add support for NServiceBus metrics and traces instrumentations.
  • Add support for Elasticsearch traces instrumentations.
  • Add plugin support for ConfigureTracesOptions(StackExchangeRedisCallsInstrumentationOptions options).
  • Add plugin support for ConfigureMetricsOptions(AspNetCoreMetricsInstrumentationOptions options).
  • Add automatic assembly redirection for .NET Framework applications. The redirection can be enabled or disabled via the OTEL_DOTNET_AUTO_NETFX_REDIRECT_ENABLED environment variable. See the additional settings table for details.
  • Add automatic Global Assembly Cache (GAC) registration, of the distributed .NET Framework assemblies, to the PowerShell installation module.

Changed

Removed

  • Remove support for Jaeger exporter.

Fixed

  • Fix WCF instrumentation on .NET Framework.

0.5.1-beta.2

Added

  • Add support for OTEL_TRACES_SAMPLER and OTEL_TRACES_SAMPLER_ARG.
  • Add Initializing plugin extension point that is invoked before OpenTelemetry SDK configuration.

0.5.1-beta.1

This beta release is built on top of OpenTelemetry .NET:

Added

  • Add support for OTEL_BSP_SCHEDULE_DELAY, OTEL_BSP_EXPORT_TIMEOUT, OTEL_BSP_MAX_QUEUE_SIZE, OTEL_BSP_MAX_EXPORT_BATCH_SIZE.
  • Add support for OTEL_METRIC_EXPORT_TIMEOUT.
  • Add support for OTEL_ATTRIBUTE_VALUE_LENGTH_LIMIT, OTEL_ATTRIBUTE_COUNT_LIMIT, OTEL_SPAN_ATTRIBUTE_VALUE_LENGTH_LIMIT, OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT, OTEL_SPAN_EVENT_COUNT_LIMIT, OTEL_SPAN_LINK_COUNT_LIMIT, OTEL_EVENT_ATTRIBUTE_COUNT_LIMIT, OTEL_LINK_ATTRIBUTE_COUNT_LIMIT for otlp exporter.

Changed

  • Updated Core components: 1.4.0-beta.3
  • Updated plugins method signature to overwrite OpenTelemetry .NET SDK exporters' and instrumentations' options. ConfigureOptions changed to ConfigureTracesOptions, ConfigureMetricsOptions or ConfigureLogsOptions.

0.5.0

The is the first production-ready (non-beta) release. It is not stable yet.

Added

  • Add support for .NET 7.
  • Add support for OTEL_DOTNET_AUTO_LOGS_ENABLED.
  • Add error log if bytecode instrumentation type is missing all instrumentation methods.
  • Plugins can overwrite OpenTelemetry .NET SDK exporters' and instrumentations' options.

Changed

  • Replace OTEL_DOTNET_AUTO_LOAD_TRACER_AT_STARTUP with OTEL_DOTNET_AUTO_TRACES_ENABLED and OTEL_DOTNET_AUTO_LOAD_METER_AT_STARTUP with OTEL_DOTNET_AUTO_METRICS_ENABLED.
  • Disable OpenTracing by default. OpenTracing can be re-enabled via OTEL_DOTNET_AUTO_OPENTRACING_ENABLED.
  • GraphQL exceptions are recorded as OTel events.
  • DOTNET_STARTUP_HOOKS required value changed to $INSTALL_DIR/net/OpenTelemetry.AutoInstrumentation.StartupHook.dll.

Removed

  • Remove support for .NET Core 3.1.
  • Remove support for OTEL_DOTNET_AUTO_HTTP2UNENCRYPTEDSUPPORT_ENABLED.
  • Remove support for OTEL_DOTNET_AUTO_ENABLED. Use CORECLR_ENABLE_PROFILING or COR_ENABLE_PROFILING instead.
  • Remove support for OTEL_DOTNET_AUTO_INCLUDE_PROCESSES.

Fixed

  • Fix the IIS registration in the PowerShell script module for Windows Server 2016.
  • Fix the IIS unregistration in the PowerShell script module.
  • Get rid of unnecessary service restarts during the IIS unregistration, in the PowerShell script module.
  • OTEL_DOTNET_AUTO_TRACES_ENABLED is also respected by bytecode instrumentations.

0.4.0-beta.1

Added

  • Add WCF traces instrumentation (server-side for .NET Framework, client-side for both .NET Core and .NET Framework).
  • Support ASP.NET Core OpenTelemetry Log exporter related environment variables:
    • OTEL_LOGS_EXPORTER,
    • OTEL_DOTNET_AUTO_LOGS_CONSOLE_EXPORTER_ENABLED,
    • OTEL_DOTNET_AUTO_LOGS_ENABLED_INSTRUMENTATIONS,
    • OTEL_DOTNET_AUTO_LOGS_DISABLED_INSTRUMENTATIONS,
    • OTEL_DOTNET_AUTO_LOGS_INCLUDE_FORMATTED_MESSAGE.
  • Support OTEL_DOTNET_AUTO_GRAPHQL_SET_DOCUMENT (default value: false) environment variable which controls whether graphql.document attribute is set.
  • Add ILogger logging instrumentation for .NET Core 3.1+.
  • Add telemetry resource attributes.
  • Add support for the b3 propagator.
  • Add MassTransit traces instrumentation.
  • Add OpenTelemetry.AutoInstrumentation Nuget package.
  • Support for Process metrics collection using the OpenTelemetry.Instrumentation.Process package.
  • Add Shell scripts for downloading and installing OpenTelemetry .NET Automatic Instrumentation and instrumenting .NET applications.
  • Add PowerShell script module for downloading and installing OpenTelemetry .NET Automatic Instrumentation and instrumenting .NET applications.

Changed

  • Replaced OTEL_DOTNET_AUTO_TRACES_PLUGINS and OTEL_DOTNET_AUTO_METRICS_PLUGINS with new environment variable OTEL_DOTNET_AUTO_PLUGINS.
  • Adjusted tags for MongoDB integration. See pull request for more details.
  • Extend MySql.Data traces instrumentation for versions 8.0.31+. Versions 8.0.31+ require bytecode instrumentation.

Removed

Fixed

  • Log folder structure is fully created on Linux.
  • Update GraphQL instrumentation to follow the OpenTelemetry semantic conventions.
  • Fixed the race between requesting ReJIT of methods targeted for bytecode instrumentation and their first execution. The race allowed, in rare occasions, for the first few executions of the method to not be instrumented. See issue #1242.
  • Span kind for GraphQL instrumentation is set as span property instead of attribute.
  • Application crash if "wrapper type" from bytecode instrumentation is missing #1469.

0.3.1-beta.1

This release is built on top of OpenTelemetry .NET:

Added

  • Add support for Alpine.
  • Add strong name signature to the OpenTelemetry.AutoInstrumentation assembly used on the .NET Framework.

Changed

  • Extend StackExchange.Redis traces instrumentation for versions 2.6.66+.
  • Updated Core components: 1.3.1

0.3.0-beta.1

This release add various new instrumentations and more propagation options.

Added

  • Add Grpc.Net.Client traces instrumentation.
  • Add MySql.Data traces instrumentation.
  • Add Npgsql traces instrumentation.
  • Add StackExchange.Redis traces instrumentation.
  • Add configuration option none to OTEL_DOTNET_AUTO_TRACES_ENABLED_INSTRUMENTATIONS and OTEL_DOTNET_AUTO_METRICS_ENABLED_INSTRUMENTATIONS.
  • Add support for the b3multi propagator.
  • Add support for the OTEL_PROPAGATORS environment variable. Supported configuration options are b3multi, baggage, tracecontext. Default is tracecontext,baggage.

Changed

  • Renamed OTEL_DOTNET_AUTO_TRACES_ENABLED to OTEL_DOTNET_AUTO_ENABLED since it controls enabling or disabling the CLR profiler independent of the signal type.
  • OTEL_DOTNET_AUTO_TRACES_ENABLED_INSTRUMENTATIONS default value is changed to include all of the available instrumentations.
  • OTEL_DOTNET_AUTO_METRICS_ENABLED_INSTRUMENTATIONS default value is changed to include all of the available instrumentations.
  • Changed Tracing sampler from always_on to parentbased_always_on. See the OpenTelemetry specification for more details.

Removed

  • Remove OTEL_DOTNET_AUTO_DOMAIN_NEUTRAL_INSTRUMENTATION configuration as it is not needed.
  • Remove OTEL_DOTNET_AUTO_{0}_ENABLED configuration, use OTEL_DOTNET_AUTO_[TRACES/METRICS]_[ENABLED/DISABLED]_INSTRUMENTATIONS instead.
  • Remove OTEL_DOTNET_AUTO_METRICS_ENABLED configuration as it is not needed.

0.2.0-beta.1

The main feature of this release is the support for the metrics signal.

This release is built on top of OpenTelemetry .NET:

You can find all OpenTelemetry references in OpenTelemetry.AutoInstrumentation.csproj.

Added

  • Add MongoDB instrumentation support from .NET Core 3.1+.
  • Support for OpenTelemetry metric exporter related environment variables:
    • OTEL_DOTNET_AUTO_METRICS_ENABLED,
    • OTEL_DOTNET_AUTO_LOAD_METER_AT_STARTUP,
    • OTEL_METRICS_EXPORTER,
    • OTEL_DOTNET_AUTO_METRICS_CONSOLE_EXPORTER_ENABLED,
    • OTEL_DOTNET_AUTO_METRICS_ENABLED_INSTRUMENTATIONS,
    • OTEL_DOTNET_AUTO_METRICS_DISABLED_INSTRUMENTATIONS,
    • OTEL_DOTNET_AUTO_METRICS_PLUGINS,
    • OTEL_DOTNET_AUTO_METRICS_ADDITIONAL_SOURCES.
  • Support for .NET Runtime metrics collection using the OpenTelemetry.Instrumentation.Runtime package.
  • Support for ASP.NET and HttpClient metrics instrumentations.
  • Support for Prometheus Exporter HttpListener version.
  • OTEL_DOTNET_AUTO_INTEGRATIONS_FILE can accept multiple filepaths delimited by the platform-specific path separator (; on Windows, : on Linux and macOS).
  • Support for metric exporter interval using environment variable: OTEL_METRIC_EXPORT_INTERVAL.

Changed

  • Rename generic environment variables to include trace.
    • OTEL_DOTNET_AUTO_ENABLED → OTEL_DOTNET_AUTO_TRACES_ENABLED,
    • OTEL_DOTNET_AUTO_LOAD_AT_STARTUP → OTEL_DOTNET_AUTO_LOAD_TRACER_AT_STARTUP,
    • OTEL_DOTNET_AUTO_CONSOLE_EXPORTER_ENABLED → OTEL_DOTNET_AUTO_TRACES_CONSOLE_EXPORTER_ENABLED,
    • OTEL_DOTNET_AUTO_ENABLED_INSTRUMENTATIONS → OTEL_DOTNET_AUTO_TRACES_ENABLED_INSTRUMENTATIONS,
    • OTEL_DOTNET_AUTO_DISABLED_INSTRUMENTATIONS → OTEL_DOTNET_AUTO_TRACES_DISABLED_INSTRUMENTATIONS,
    • OTEL_DOTNET_AUTO_INSTRUMENTATION_PLUGINS → OTEL_DOTNET_AUTO_TRACES_PLUGINS,
    • OTEL_DOTNET_AUTO_ADDITIONAL_SOURCES → OTEL_DOTNET_AUTO_TRACES_ADDITIONAL_SOURCES.

Removed

  • Support for .NET 5.0

Fixed

  • Use , as separator, as documented, instead of ;, for:
    • OTEL_DOTNET_AUTO_INCLUDE_PROCESSES,
    • OTEL_DOTNET_AUTO_EXCLUDE_PROCESSES,
    • OTEL_DOTNET_AUTO_TRACES_DISABLED_INSTRUMENTATIONS.
  • Remove invalid instrumentation for MongoDB.Driver.Core <2.3.0.

0.1.0-beta.1

The is an initial, official beta release, built on top of OpenTelemetry .NET:

Added

  • Support for .NET Framework 4.6.2 and higher.
  • Support for .NET Core 3.1.
  • Support for .NET 5.0 and 6.0.
  • ASP.NET and ASP.NET Core source instrumentations.
  • GraphQL bytecode instrumentation.
  • Microsoft.Data.SqlClient and System.Data.SqlClient source instrumentation.
  • OTLP, Jaeger, Zipkin and Console trace exporters.
  • Global management using environment variables: OTEL_DOTNET_AUTO_HOME, OTEL_DOTNET_AUTO_ENABLED, OTEL_DOTNET_AUTO_INCLUDE_PROCESSES, OTEL_DOTNET_AUTO_EXCLUDE_PROCESSES, OTEL_DOTNET_AUTO_AZURE_APP_SERVICES.
  • Support for OpenTelemetry resource environment variables: OTEL_RESOURCE_ATTRIBUTES, OTEL_SERVICE_NAME.
  • Instrumentation management using environment variables: OTEL_DOTNET_AUTO_INTEGRATIONS_FILE, OTEL_DOTNET_AUTO_ENABLED_INSTRUMENTATIONS, OTEL_DOTNET_AUTO_DISABLED_INSTRUMENTATIONS, OTEL_DOTNET_AUTO_{0}_ENABLED, OTEL_DOTNET_AUTO_DOMAIN_NEUTRAL_INSTRUMENTATION, OTEL_DOTNET_AUTO_CLR_DISABLE_OPTIMIZATIONS, OTEL_DOTNET_AUTO_CLR_ENABLE_INLINING, OTEL_DOTNET_AUTO_CLR_ENABLE_NGEN.
  • Support for OpenTelemetry exporter related environment variables: OTEL_TRACES_EXPORTER, OTEL_EXPORTER_OTLP_PROTOCOL,
  • Customization and plugin capabilities which can be configured using the following environment variables: OTEL_DOTNET_AUTO_LOAD_AT_STARTUP, OTEL_DOTNET_AUTO_ADDITIONAL_SOURCES, OTEL_DOTNET_AUTO_LEGACY_SOURCES, OTEL_DOTNET_AUTO_INSTRUMENTATION_PLUGINS.
  • OTEL_DOTNET_AUTO_HTTP2UNENCRYPTEDSUPPORT_ENABLED environment variable which enables System.Net.Http.SocketsHttpHandler.Http2UnencryptedSupport. See the official Microsoft documentation for more details.