Datadog.Trace.ClrProfiler.Native

Running a full framework console app on windows server, tracer 2.18, agent 7.39.2.1

log is dumping this line and apm isn’t working: https://github.com/DataDog/dd-trace-dotnet/blob/dff77dd9b50f8a3dd6b5d35687aaaa617904d9a4/tracer/src/Datadog.Trace/ContinuousProfiler/ProfilerStatus.cs#L73

any clear indication as to what would cause this? same setup is working in another env with the same configuration and apm is working on this machine for other apps (mix of services, iis sites, console apps). Not sure if the root cause is Failed to get the runtime-id from native: Unable to load DLL 'Datadog.Trace.ClrProfiler.Native'

Relevant logs:

2022-11-02 17:37:26.839 +00:00 [INF] Using ApiWebRequestFactory for discovery transport.  { MachineName: ".", Process: "[61536 REDACTED]", AppDomain: "[1 REDACTED.exe]", TracerVersion: "2.18.0.0" }
2022-11-02 17:37:26.909 +00:00 [INF] Using ApiWebRequestFactory for trace transport.  { MachineName: ".", Process: "[61536 REDACTED]", AppDomain: "[1 REDACTED.exe]", TracerVersion: "2.18.0.0" }
2022-11-02 17:37:26.999 +00:00 [INF] Building automatic tracer  { MachineName: ".", Process: "[61536 REDACTED]", AppDomain: "[1 REDACTED.exe]", TracerVersion: "2.18.0.0" }
2022-11-02 17:37:27.004 +00:00 [INF] Failed to get the runtime-id from native: Unable to load DLL 'Datadog.Trace.ClrProfiler.Native': The specified module could not be found. (Exception from HRESULT: 0x8007007E)  { MachineName: ".", Process: "[61536 REDACTED]", AppDomain: "[1 REDACTED.exe]", TracerVersion: "2.18.0.0" }
2022-11-02 17:37:27.039 +00:00 [INF] Continuous Profiler is enabled.  { MachineName: ".", Process: "[61536 REDACTED]", AppDomain: "[1 REDACTED.exe]", TracerVersion: "2.18.0.0" }
2022-11-02 17:37:27.044 +00:00 [WRN] No profiler related feature(s) will be enabled. Failed to retrieve profiler status native pointer. System.DllNotFoundException: Unable to load DLL 'Datadog.Profiler.Native': The specified module could not be found. (Exception from HRESULT: 0x8007007E)
   at Datadog.Trace.ContinuousProfiler.NativeInterop.NativeMethods.GetProfilerStatusPointer()
   at Datadog.Trace.ContinuousProfiler.NativeInterop.GetProfilerStatusPointer()
   at Datadog.Trace.ContinuousProfiler.ProfilerStatus.EnsureNativeIsIntialized()
 { MachineName: ".", Process: "[61536 REDACTED]", AppDomain: "[1 REDACTED.exe]", TracerVersion: "2.18.0.0" }
2022-11-02 17:37:27.109 +00:00 [INF] Using ApiWebRequestFactory for telemetry transport.  { MachineName: ".", Process: "[61536 REDACTED]", AppDomain: "[1 REDACTED.exe]", TracerVersion: "2.18.0.0" }
2022-11-02 17:37:27.110 +00:00 [INF] Using ApiWebRequestFactory for telemetry transport direct to intake.  { MachineName: ".", Process: "[61536 REDACTED]", AppDomain: "[1 REDACTED.exe]", TracerVersion: "2.18.0.0" }
2022-11-02 17:37:27.374 +00:00 [INF] DATADOG TRACER CONFIGURATION - {"date":"2022-11-02T17:37:27.3620794+00:00","os_name":"Windows","os_version":"Microsoft Windows NT 6.2.9200.0","version":"2.18.0.0","platform":"x64","lang":".NET Framework","lang_version":"4.8","env":"prod","enabled":true,"service":"REDACTED_SERVICE_NAME","agent_url":"http://127.0.0.1:8126/","agent_transport":"Default","debug":false,"health_checks_enabled":false,"analytics_enabled":false,"sample_rate":null,"sampling_rules":null,"tags":[],"log_injection_enabled":true,"runtime_metrics_enabled":true,"disabled_integrations":[],"routetemplate_resourcenames_enabled":true,"routetemplate_expansion_enabled":false,"querystring_reporting_enabled":true,"obfuscation_querystring_regex_timout":200.0,"partialflush_enabled":false,"partialflush_minspans":500,"runtime_id":"7a8c630f-ff6a-4146-ba5c-69b24ce38936","agent_reachable":true,"agent_error":"","appsec_enabled":false,"appsec_trace_rate_limit":100,"appsec_rules_file_path":"(default)","appsec_libddwaf_version":"(none)","iast_enabled":false,"iast_deduplication_enabled":true,"iast_weak_hash_algorithms":"HMACMD5,MD5,HMACSHA1,SHA1","iast_weak_cipher_algorithms":"DES,TRIPLEDES,RC2","direct_logs_submission_enabled_integrations":[],"direct_logs_submission_enabled":false,"direct_logs_submission_error":"","exporter_settings_warning":["No transport configuration found, using default values"],"dd_trace_methods":"","activity_listener_enabled":false,"profiler_enabled":false,"code_hotspots_enabled":false,"wcf_obfuscation_enabled":true,"data_streams_enabled":false,"span_sampling_rules":null}  { MachineName: ".", Process: "[61536 REDACTED]", AppDomain: "[1 REDACTED.exe]", TracerVersion: "2.18.0.0" }```

[mrtristan]

thanks @andrewlock

from what i can tell the cli app is the only one that had the env var issue (set at runtime) so i’d expect the iis app to be working. i did uninstall / reinstall the tracer msi.

Two quick questions come to mind:

• i noticed some env vars expect true in the docs and others expect 1 - could getting that wrong cause issues?
• any issue with any of these being set at a machine level? (obviously some are mine and some as you mentioned are set automagically)

FYI I did open a support ticket 24 hours ago. pretty quiet there so far.

PS - I kept an eye out for you at Dash. Wanted to thank you for the great blog and everything you put out there for the dotnet community.

[andrewlock]

I identified that the issue was pertaining to some of the env vars being set by the running application instead of them being set by a calling process.

Ah, yes, that would totally make sense. We hook very early into the execution process (before the application starts executing your code) so by then it’s too late to set the variables. Thanks for the update!