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_STORAGE_INSIGHTS_ENDPOINT=...overrides theEndpointOption(which defaults to "storageinsights.googleapis.com") used byMakeStorageInsightsConnection().
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::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 2025-09-04 UTC."],[[["\u003cp\u003eThe webpage documents environment variables and library behaviors for Google Cloud Storage Insights, with the latest release candidate being version 2.37.0-rc.\u003c/p\u003e\n"],["\u003cp\u003eA range of prior versions, from 2.36.0 down to 2.11.0, are accessible, each with their own documentation page for Storage Insights environment settings.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eGOOGLE_CLOUD_CPP_STORAGE_INSIGHTS_ENDPOINT\u003c/code\u003e allows overriding the default endpoint, while \u003ccode\u003eGOOGLE_CLOUD_CPP_ENABLE_TRACING\u003c/code\u003e activates gRPC call tracing, and \u003ccode\u003eGOOGLE_CLOUD_CPP_ENABLE_CLOG\u003c/code\u003e enables library logging.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eGOOGLE_CLOUD_CPP_TRACING_OPTIONS\u003c/code\u003e modifies gRPC tracing behavior, and \u003ccode\u003eGOOGLE_CLOUD_PROJECT\u003c/code\u003e is utilized in examples/tests to specify the GCP project, but does not change the library.\u003c/p\u003e\n"],["\u003cp\u003eEnvironment variables are particularly helpful when troubleshooting issues and the behaviors can be configured in the code.\u003c/p\u003e\n"]]],[],null,["Version 2.17.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/storageinsights/latest/storageinsights-env)\n- [2.41.0](/cpp/docs/reference/storageinsights/2.41.0/storageinsights-env)\n- [2.40.0](/cpp/docs/reference/storageinsights/2.40.0/storageinsights-env)\n- [2.39.0](/cpp/docs/reference/storageinsights/2.39.0/storageinsights-env)\n- [2.38.0](/cpp/docs/reference/storageinsights/2.38.0/storageinsights-env)\n- [2.37.0](/cpp/docs/reference/storageinsights/2.37.0/storageinsights-env)\n- [2.36.0](/cpp/docs/reference/storageinsights/2.36.0/storageinsights-env)\n- [2.35.0](/cpp/docs/reference/storageinsights/2.35.0/storageinsights-env)\n- [2.34.0](/cpp/docs/reference/storageinsights/2.34.0/storageinsights-env)\n- [2.33.0](/cpp/docs/reference/storageinsights/2.33.0/storageinsights-env)\n- [2.32.0](/cpp/docs/reference/storageinsights/2.32.0/storageinsights-env)\n- [2.31.0](/cpp/docs/reference/storageinsights/2.31.0/storageinsights-env)\n- [2.30.0](/cpp/docs/reference/storageinsights/2.30.0/storageinsights-env)\n- [2.29.0](/cpp/docs/reference/storageinsights/2.29.0/storageinsights-env)\n- [2.28.0](/cpp/docs/reference/storageinsights/2.28.0/storageinsights-env)\n- [2.27.0](/cpp/docs/reference/storageinsights/2.27.0/storageinsights-env)\n- [2.26.0](/cpp/docs/reference/storageinsights/2.26.0/storageinsights-env)\n- [2.25.1](/cpp/docs/reference/storageinsights/2.25.1/storageinsights-env)\n- [2.24.0](/cpp/docs/reference/storageinsights/2.24.0/storageinsights-env)\n- [2.23.0](/cpp/docs/reference/storageinsights/2.23.0/storageinsights-env)\n- [2.22.1](/cpp/docs/reference/storageinsights/2.22.1/storageinsights-env)\n- [2.21.0](/cpp/docs/reference/storageinsights/2.21.0/storageinsights-env)\n- [2.20.0](/cpp/docs/reference/storageinsights/2.20.0/storageinsights-env)\n- [2.19.0](/cpp/docs/reference/storageinsights/2.19.0/storageinsights-env)\n- [2.18.0](/cpp/docs/reference/storageinsights/2.18.0/storageinsights-env)\n- [2.17.0](/cpp/docs/reference/storageinsights/2.17.0/storageinsights-env)\n- [2.16.0](/cpp/docs/reference/storageinsights/2.16.0/storageinsights-env)\n- [2.15.1](/cpp/docs/reference/storageinsights/2.15.1/storageinsights-env)\n- [2.14.0](/cpp/docs/reference/storageinsights/2.14.0/storageinsights-env)\n- [2.13.0](/cpp/docs/reference/storageinsights/2.13.0/storageinsights-env)\n- [2.12.0](/cpp/docs/reference/storageinsights/2.12.0/storageinsights-env)\n- [2.11.0](/cpp/docs/reference/storageinsights/2.11.0/storageinsights-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_STORAGE_INSIGHTS_ENDPOINT=...` overrides the `EndpointOption` (which defaults to \"storageinsights.googleapis.com\") used by `MakeStorageInsightsConnection()`.\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::TracingComponentsOption`](https://cloud.google.com/cpp/docs/reference/common/latest/structgoogle_1_1cloud_1_1TracingComponentsOption.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."]]
