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.NET Core

Prerequisites​

  • .NET SDK 8+

Installation​

  1. Install the required dependencies:

    # Download the installation script
    curl -sSfL -O https://github.com/open-telemetry/opentelemetry-dotnet-instrumentation/releases/latest/download/otel-dotnet-auto-install.sh

    # Install core files
    sh ./otel-dotnet-auto-install.sh

    # Make the instrumentation script executable
    chmod +x $HOME/.otel-dotnet-auto/instrument.sh

  2. Modify the application run command as follows:

    OTEL_SERVICE_NAME=<app_name> \
    OTEL_TRACES_EXPORTER=otlp \
    OTEL_METRICS_EXPORTER=none \
    OTEL_LOGS_EXPORTER=none \
    OTEL_EXPORTER_OTLP_PROTOCOL=http/protobuf \
    OTEL_EXPORTER_OTLP_TRACES_ENDPOINT=http://<ip_address_of_cubeapm_server>:4318/v1/traces \
    OTEL_EXPORTER_OTLP_COMPRESSION=gzip \
    $HOME/.otel-dotnet-auto/instrument.sh dotnet run

Sample App​

A working example is available at https://github.com/cubeapm/sample_app_dotnet_core/tree/otel

Troubleshooting​

The following can be used for debugging:

OTEL_LOG_LEVEL=debug

Also, traces exporter can be changed from otlp to console to output traces on console.

The following command can be tried on the application host server to check connectivity to CubeAPM server(s):

telnet <ip_address_of_cubeapm_server> 4318

Reference​

https://opentelemetry.io/docs/zero-code/net/