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_CERTIFICATE_AUTHORITY_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "privateca.googleapis.com") used by MakeCertificateAuthorityServiceConnection().
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::LoggingComponentsOptionGOOGLE_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 2025-03-21 UTC."],[[["This document outlines environment variables and settings for configuring the behavior of the C++ client library, specifically for the private certificate authority service."],["The latest version of the C++ client library for the private certificate authority is 2.37.0-rc, and numerous previous versions are also listed, allowing users to access specific version documentation."],["Environment variables like `GOOGLE_CLOUD_CPP_CERTIFICATE_AUTHORITY_SERVICE_ENDPOINT` can be used to override default endpoints, and `GOOGLE_CLOUD_CPP_ENABLE_TRACING` and related variables enable and configure gRPC call tracing for troubleshooting."],["Logging can be configured using `GOOGLE_CLOUD_CPP_ENABLE_CLOG` and related variables to manage log output and control the backend used for logging, while the `GOOGLE_CLOUD_PROJECT` variable is used for examples and tests but does not impact library behavior."]]],[]]
