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_FOLDERS_ENDPOINT=... overrides the EndpointOption (which defaults to "cloudresourcemanager.googleapis.com") used by MakeFoldersConnection().
GOOGLE_CLOUD_CPP_ORGANIZATIONS_ENDPOINT=... overrides the EndpointOption (which defaults to "cloudresourcemanager.googleapis.com") used by MakeOrganizationsConnection().
GOOGLE_CLOUD_CPP_PROJECTS_ENDPOINT=... overrides the EndpointOption (which defaults to "cloudresourcemanager.googleapis.com") used by MakeProjectsConnection().
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"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["\u003cp\u003eThis document provides a comprehensive list of available versions for the Resource Manager, ranging from the latest release candidate 2.37.0-rc down to version 2.11.0.\u003c/p\u003e\n"],["\u003cp\u003eEnvironment variables like \u003ccode\u003eGOOGLE_CLOUD_CPP_FOLDERS_ENDPOINT\u003c/code\u003e, \u003ccode\u003eGOOGLE_CLOUD_CPP_ORGANIZATIONS_ENDPOINT\u003c/code\u003e, and \u003ccode\u003eGOOGLE_CLOUD_CPP_PROJECTS_ENDPOINT\u003c/code\u003e can be used to override the default endpoints for different connection types, such as Folders, Organizations, and Projects respectively.\u003c/p\u003e\n"],["\u003cp\u003eTracing for gRPC calls can be enabled using \u003ccode\u003eGOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc\u003c/code\u003e, and additional logging output can be enabled by also setting \u003ccode\u003eGOOGLE_CLOUD_CPP_ENABLE_CLOG\u003c/code\u003e, which will print all the logging to the console.\u003c/p\u003e\n"],["\u003cp\u003eThe behavior of gRPC tracing can be further customized with \u003ccode\u003eGOOGLE_CLOUD_CPP_TRACING_OPTIONS\u003c/code\u003e, affecting aspects such as message formatting and field truncation, with no effect on other functions.\u003c/p\u003e\n"],["\u003cp\u003eSetting \u003ccode\u003eGOOGLE_CLOUD_PROJECT\u003c/code\u003e is used in testing examples to set the project, but has no effect in the library.\u003c/p\u003e\n"]]],[],null,[]]
