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_CLOUD_BUILD_ENDPOINT=...overrides theEndpointOption(which defaults to "cloudbuild.googleapis.com") used byMakeCloudBuildConnection().
GOOGLE_CLOUD_CPP_REPOSITORY_MANAGER_ENDPOINT=...overrides theEndpointOption(which defaults to "cloudbuild.googleapis.com") used byMakeRepositoryManagerConnection().
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 setGOOGLE_CLOUD_CPP_ENABLE_CLOGto 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 2025-09-04 UTC."],[[["\u003cp\u003eThis page lists available versions of the Cloud Build C++ library, ranging from version 2.11.0 up to the latest release candidate, 2.37.0-rc, with the current version being 2.36.0.\u003c/p\u003e\n"],["\u003cp\u003eEnvironment variables provide a way to configure the behavior of the library and are particularly useful for troubleshooting, such as the ability to set custom endpoints with \u003ccode\u003eGOOGLE_CLOUD_CPP_CLOUD_BUILD_ENDPOINT\u003c/code\u003e and \u003ccode\u003eGOOGLE_CLOUD_CPP_REPOSITORY_MANAGER_ENDPOINT\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eLogging can be enabled using \u003ccode\u003eGOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc\u003c/code\u003e for gRPC calls, and \u003ccode\u003eGOOGLE_CLOUD_CPP_ENABLE_CLOG=yes\u003c/code\u003e to output logs to the program's console.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eGOOGLE_CLOUD_CPP_TRACING_OPTIONS\u003c/code\u003e can be used to customize the behavior of gRPC tracing, including how messages are displayed and whether strings/bytes are truncated.\u003c/p\u003e\n"],["\u003cp\u003eThe environment variable \u003ccode\u003eGOOGLE_CLOUD_PROJECT\u003c/code\u003e sets the default GCP project for examples and integration tests but does not affect the library directly.\u003c/p\u003e\n"]]],[],null,["Version 2.36.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/cloudbuild/latest/cloudbuild-env)\n- [2.41.0](/cpp/docs/reference/cloudbuild/2.41.0/cloudbuild-env)\n- [2.40.0](/cpp/docs/reference/cloudbuild/2.40.0/cloudbuild-env)\n- [2.39.0](/cpp/docs/reference/cloudbuild/2.39.0/cloudbuild-env)\n- [2.38.0](/cpp/docs/reference/cloudbuild/2.38.0/cloudbuild-env)\n- [2.37.0](/cpp/docs/reference/cloudbuild/2.37.0/cloudbuild-env)\n- [2.36.0](/cpp/docs/reference/cloudbuild/2.36.0/cloudbuild-env)\n- [2.35.0](/cpp/docs/reference/cloudbuild/2.35.0/cloudbuild-env)\n- [2.34.0](/cpp/docs/reference/cloudbuild/2.34.0/cloudbuild-env)\n- [2.33.0](/cpp/docs/reference/cloudbuild/2.33.0/cloudbuild-env)\n- [2.32.0](/cpp/docs/reference/cloudbuild/2.32.0/cloudbuild-env)\n- [2.31.0](/cpp/docs/reference/cloudbuild/2.31.0/cloudbuild-env)\n- [2.30.0](/cpp/docs/reference/cloudbuild/2.30.0/cloudbuild-env)\n- [2.29.0](/cpp/docs/reference/cloudbuild/2.29.0/cloudbuild-env)\n- [2.28.0](/cpp/docs/reference/cloudbuild/2.28.0/cloudbuild-env)\n- [2.27.0](/cpp/docs/reference/cloudbuild/2.27.0/cloudbuild-env)\n- [2.26.0](/cpp/docs/reference/cloudbuild/2.26.0/cloudbuild-env)\n- [2.25.1](/cpp/docs/reference/cloudbuild/2.25.1/cloudbuild-env)\n- [2.24.0](/cpp/docs/reference/cloudbuild/2.24.0/cloudbuild-env)\n- [2.23.0](/cpp/docs/reference/cloudbuild/2.23.0/cloudbuild-env)\n- [2.22.1](/cpp/docs/reference/cloudbuild/2.22.1/cloudbuild-env)\n- [2.21.0](/cpp/docs/reference/cloudbuild/2.21.0/cloudbuild-env)\n- [2.20.0](/cpp/docs/reference/cloudbuild/2.20.0/cloudbuild-env)\n- [2.19.0](/cpp/docs/reference/cloudbuild/2.19.0/cloudbuild-env)\n- [2.18.0](/cpp/docs/reference/cloudbuild/2.18.0/cloudbuild-env)\n- [2.17.0](/cpp/docs/reference/cloudbuild/2.17.0/cloudbuild-env)\n- [2.16.0](/cpp/docs/reference/cloudbuild/2.16.0/cloudbuild-env)\n- [2.15.1](/cpp/docs/reference/cloudbuild/2.15.1/cloudbuild-env)\n- [2.14.0](/cpp/docs/reference/cloudbuild/2.14.0/cloudbuild-env)\n- [2.13.0](/cpp/docs/reference/cloudbuild/2.13.0/cloudbuild-env)\n- [2.12.0](/cpp/docs/reference/cloudbuild/2.12.0/cloudbuild-env)\n- [2.11.0](/cpp/docs/reference/cloudbuild/2.11.0/cloudbuild-env) \n\nEnvironment Variables\n=====================\n\nA 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.\n\nEndpoint Overrides\n------------------\n\n- `GOOGLE_CLOUD_CPP_CLOUD_BUILD_ENDPOINT=...` overrides the `EndpointOption` (which defaults to \"cloudbuild.googleapis.com\") used by `MakeCloudBuildConnection()`.\n- `GOOGLE_CLOUD_CPP_REPOSITORY_MANAGER_ENDPOINT=...` overrides the `EndpointOption` (which defaults to \"cloudbuild.googleapis.com\") used by `MakeRepositoryManagerConnection()`.\n\n###### See Also\n\n[`google::cloud::EndpointOption`](https://cloud.google.com/cpp/docs/reference/common/latest/structgoogle_1_1cloud_1_1EndpointOption.html)\n\nLogging\n-------\n\n`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.\n\n###### See Also\n\n[`google::cloud::LoggingComponentsOption`](https://cloud.google.com/cpp/docs/reference/common/latest/structgoogle_1_1cloud_1_1LoggingComponentsOption.html)`GOOGLE_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.\n\n###### See Also\n\n[`google::cloud::GrpcTracingOptionsOption`](https://cloud.google.com/cpp/docs/reference/common/latest/structgoogle_1_1cloud_1_1GrpcTracingOptionsOption.html)`GOOGLE_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.\n\n###### See Also\n\n[`google::cloud::LogBackend`](https://cloud.google.com/cpp/docs/reference/common/latest/classgoogle_1_1cloud_1_1LogBackend.html)\n\n###### See Also\n\n[`google::cloud::LogSink`](https://cloud.google.com/cpp/docs/reference/common/latest/classgoogle_1_1cloud_1_1LogSink.html)\n\nSetting the Default Project\n---------------------------\n\n`GOOGLE_CLOUD_PROJECT=...`: is used in examples and integration tests to configure the GCP project. This has no effect in the library."]]
