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_GKE_HUB_ENDPOINT=... overrides the EndpointOption (which defaults to "gkehub.googleapis.com") used by MakeGkeHubConnection().
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 2025-03-05 UTC."],[[["This document outlines various versions of the GKE Hub C++ library, with version 2.37.0-rc being the most recent release candidate and 2.15.1 being the default version displayed."],["Environment variables such as `GOOGLE_CLOUD_CPP_GKE_HUB_ENDPOINT` are used to configure the library's behavior, particularly for troubleshooting, including overriding the default endpoint."],["The `GOOGLE_CLOUD_CPP_ENABLE_TRACING` and `GOOGLE_CLOUD_CPP_TRACING_OPTIONS` variables enable and customize gRPC call tracing, useful for debugging and understanding library operations."],["Logging within the library is controlled by the `GOOGLE_CLOUD_CPP_ENABLE_CLOG` environment variable, which allows for enabling output of logs to the console."],["The `GOOGLE_CLOUD_PROJECT` environment variable can be used in examples and tests to configure the GCP project, but it does not affect the core library's operation."]]],[]]
