A number of environment variables can be used to configure the behavior of the library. There are also functions to configure this behavior in code. The environment variables are convenient when troubleshooting problems.
Endpoint Overrides
GOOGLE_CLOUD_CPP_BARE_METAL_SOLUTION_ENDPOINT=... overrides the EndpointOption (which defaults to "baremetalsolution.googleapis.com") used by MakeBareMetalSolutionConnection().
GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc: turns on tracing for most gRPC calls. The library injects an additional Stub decorator that prints each gRPC request and response. Unless you have configured your own logging backend, you should also set GOOGLE_CLOUD_CPP_ENABLE_CLOG to produce any output on the program's console.
See Also
google::cloud::TracingComponentsOptionGOOGLE_CLOUD_CPP_TRACING_OPTIONS=...: modifies the behavior of gRPC tracing, including whether messages will be output on multiple lines, or whether string/bytes fields will be truncated.
See Also
google::cloud::GrpcTracingOptionsOptionGOOGLE_CLOUD_CPP_ENABLE_CLOG=yes: turns on logging in the library, basically the library always "logs" but the logging infrastructure has no backend to actually print anything until the application sets a backend or they set this environment variable.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-05 UTC."],[[["This document outlines various versions of the Bare Metal Solution, with version 2.37.0-rc being the latest release candidate and 2.19.0 being the starting point of the included versions, which then goes down to version 2.11.0."],["Environment variables like `GOOGLE_CLOUD_CPP_BARE_METAL_SOLUTION_ENDPOINT` allow for endpoint overrides, and this would override the `EndpointOption` normally set by `MakeBareMetalSolutionConnection()`."],["Tracing for gRPC calls can be enabled using `GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc`, and detailed logging can be activated with `GOOGLE_CLOUD_CPP_ENABLE_CLOG`, also the variable `GOOGLE_CLOUD_CPP_TRACING_OPTIONS` can modify the behavior of gRPC tracing."],["The `GOOGLE_CLOUD_PROJECT` environment variable can configure the GCP project for examples and integration tests, but it does not affect the library."]]],[]]
