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_SHELL_SERVICE_ENDPOINT=... overrides the EndpointOption (which defaults to "cloudshell.googleapis.com") used by MakeCloudShellServiceConnection().
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"]],[["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 2025-03-14 UTC."],[[["The latest version of the shell environment documentation is `2.37.0-rc`, with previous versions ranging from `2.36.0` down to `2.11.0` also being documented on this page."],["Environment variables can be used to configure the library's behavior, especially helpful when troubleshooting, and there are also functions to achieve the same thing within code."],["The `GOOGLE_CLOUD_CPP_CLOUD_SHELL_SERVICE_ENDPOINT` variable overrides the default endpoint used by `MakeCloudShellServiceConnection()`."],["Tracing for gRPC calls can be turned on with `GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc`, and you should set `GOOGLE_CLOUD_CPP_ENABLE_CLOG` if you don't already have a logging backend."],["The variable `GOOGLE_CLOUD_PROJECT` is used in examples and integration tests to set the GCP project, but it does not have any impact on the library."]]],[]]
