run example/demo error on Mac,no tracing generated

[caterchong]

Bug Report

Symptom

Mac's chip: Apple M2 pro
docker: docker desktop(v4.33.0). settings->General-> User Rosetta for x86_64/amd64 emulation on Apple Silicon opened.

make

There is no tracing. in demo/log dir, all log files are empty.

check demo-service, /var/log/opentelemetry/dotnet/otel-dotnet-auto-1-Examples.Service-StartupHook-20240822.log

[Error] CLR profiler (64bit) is not found at '/otel-dotnet-auto/linux-x64/OpenTelemetry.AutoInstrumentation.Native.so'. Recheck 'CORECLR_PROFILER_PATH'.

should auto instrument and output tracing normally

bug reason

in demo/otel-dotnet.env

CORECLR_PROFILER_PATH="/otel-dotnet-auto/linux-x64/OpenTelemetry.AutoInstrumentation.Native.so"

It's hard-coded to linux-x64

[RassK]

I guess the emulator outputs environment as Linux. In case of using emulators you may need to tweak the envs manually using https://github.com/open-telemetry/opentelemetry-dotnet-instrumentation/blob/main/docs/config.md

[caterchong]

the emulator outputs the right environment variable , linux with arm64 arch.

docker build works fine, intalls the right so,

/otel-dotnet-auto/linux-arm64/OpenTelemetry.AutoInstrumentation.Native.so

docker-compose.yaml

    env_file:
      - otel-dotnet.env # enables OpenTelemetry .NET Automatic Instrumentation

otel-dotnet.env hardcode CORECLR_PROFILER_PATH with linux-x64 ,which is wrong under mac m2 pro.

/otel-dotnet-auto/linux-x64/OpenTelemetry.AutoInstrumentation.Native.so

[RassK]

the emulator outputs the right environment variable , linux with arm64 arch.

@caterchong Shouldn't it be linux-x64 after the emulation? If emulator outputs arm64 instead of x64, it's definitely wrong.
It should be x64 for the application, so emulator translates x64 to arm64.

[pjanotti]

I couldn't get hold of a arm mac to try to repro this. Until some dev on the SIG can get a hold of one it is going to be hard to make progress without detailed repro steps.

[pjanotti]

Ok I got a repro for this one on mac arm, I will investigate as time permits.

# cat ./otel-dotnet-auto-1-Examples.Service-StartupHook-20250326.log
[2025-03-26T15:27:55.3208992Z] [Information] Rule Engine: MinSupportedFrameworkRule evaluation success. 
[2025-03-26T15:27:55.4070635Z] [Information] Rule Engine: OpenTelemetrySdkMinimumVersionRule evaluation success. 
[2025-03-26T15:27:55.4289542Z] [Error] CLR profiler (64bit) is not found at '/otel-dotnet-auto/linux-x64/OpenTelemetry.AutoInstrumentation.Native.so'. Recheck 'CORECLR_PROFILER_PATH'. 
[2025-03-26T15:27:55.4314034Z] [Error] Rule 'Native profiler diagnoser' failed: Verifies that native profiler is correctly setup in case it's enabled. 
[2025-03-26T15:27:55.4381837Z] [Error] Error in StartupHook initialization: LoaderFolderLocation: /otel-dotnet-auto/net
Exception: Rule Engine Failure: One or more rules failed validation. Automatic Instrumentation won't be loaded.
System.Exception: Rule Engine Failure: One or more rules failed validation. Automatic Instrumentation won't be loaded.
   at StartupHook.Initialize() in /_/src/OpenTelemetry.AutoInstrumentation.StartupHook/StartupHook.cs:line 34 
# export
export APP_UID='1654'
export ASPNETCORE_HTTP_PORTS='8080'
export ASPNET_VERSION='8.0.6'
export CORECLR_ENABLE_PROFILING='1'
export CORECLR_PROFILER='{918728DD-259F-4A6A-AC2B-B85E1B658318}'
export CORECLR_PROFILER_PATH='/otel-dotnet-auto/linux-x64/OpenTelemetry.AutoInstrumentation.Native.so'
export DB_CONNECTION='Server=sqlserver,1433;User=sa;Password=yourStrong(!)Password;TrustServerCertificate=True;'
export DOTNET_ADDITIONAL_DEPS='/otel-dotnet-auto/AdditionalDeps'
export DOTNET_GENERATE_ASPNET_CERTIFICATE='false'
export DOTNET_NOLOGO='true'
export DOTNET_RUNNING_IN_CONTAINER='true'
export DOTNET_SDK_VERSION='8.0.302'
export DOTNET_SHARED_STORE='/otel-dotnet-auto/store'
export DOTNET_STARTUP_HOOKS='/otel-dotnet-auto/net/OpenTelemetry.AutoInstrumentation.StartupHook.dll'
export DOTNET_USE_POLLING_FILE_WATCHER='true'
export DOTNET_VERSION='8.0.6'
export HOME='/root'
export HOSTNAME='1faed357bd40'
export NUGET_XMLDOC_MODE='skip'
export OLDPWD='/var/log/opentelemetry'
export OTEL_DOTNET_AUTO_HOME='/otel-dotnet-auto'
export OTEL_DOTNET_AUTO_METRICS_ADDITIONAL_SOURCES='Examples.Service'
export OTEL_DOTNET_AUTO_TRACES_ADDITIONAL_SOURCES='Examples.Service'
export OTEL_EXPORTER_OTLP_ENDPOINT='http://otel-collector:4318'
export OTEL_SERVICE_NAME='service'
export PATH='/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'
export POWERSHELL_DISTRIBUTION_CHANNEL='PSDocker-DotnetSDK-Ubuntu-22.04-arm64'
export PWD='/var/log/opentelemetry/dotnet'
export TERM='xterm'