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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 OverridesGOOGLE_CLOUD_CPP_MANAGED_NOTEBOOK_SERVICE_ENDPOINT=...
overrides the EndpointOption
(which defaults to "notebooks.googleapis.com") used by MakeManagedNotebookServiceConnection()
.GOOGLE_CLOUD_CPP_NOTEBOOK_SERVICE_ENDPOINT=...
overrides the EndpointOption
(which defaults to "notebooks.googleapis.com") used by MakeNotebookServiceConnection()
.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.
google::cloud::LoggingComponentsOption
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.
google::cloud::GrpcTracingOptionsOption
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.
GOOGLE_CLOUD_PROJECT=...
: is used in examples and integration tests to configure the GCP project. This has no effect in the library.
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2025-08-14 UTC.
[[["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 2025-08-14 UTC."],[[["The webpage provides a comprehensive list of environment variables and functions that can be used to configure the behavior of the library, particularly useful for troubleshooting."],["It lists a variety of versions from 2.11.0 all the way up to the latest release candidate, 2.37.0-rc, each linked to their respective documentation pages."],["`GOOGLE_CLOUD_CPP_MANAGED_NOTEBOOK_SERVICE_ENDPOINT` and `GOOGLE_CLOUD_CPP_NOTEBOOK_SERVICE_ENDPOINT` environment variables allow users to override the default endpoint for notebook services."],["Environment variables like `GOOGLE_CLOUD_CPP_ENABLE_TRACING` and `GOOGLE_CLOUD_CPP_ENABLE_CLOG` facilitate detailed logging and tracing for gRPC calls within the library."]]],[]]
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