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_EXECUTIONS_ENDPOINT=... overrides the EndpointOption (which defaults to "run.googleapis.com") used by MakeExecutionsConnection().
GOOGLE_CLOUD_CPP_JOBS_ENDPOINT=... overrides the EndpointOption (which defaults to "run.googleapis.com") used by MakeJobsConnection().
GOOGLE_CLOUD_CPP_REVISIONS_ENDPOINT=... overrides the EndpointOption (which defaults to "run.googleapis.com") used by MakeRevisionsConnection().
GOOGLE_CLOUD_CPP_RUN_SERVICES_ENDPOINT=... overrides the EndpointOption (which defaults to "run.googleapis.com") used by MakeServicesConnection().
GOOGLE_CLOUD_CPP_TASKS_ENDPOINT=... overrides the EndpointOption (which defaults to "run.googleapis.com") used by MakeTasksConnection().
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"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-07-09 UTC."],[[["This document provides a comprehensive list of available versions, ranging from the latest release candidate `2.37.0-rc` down to version `2.11.0`, along with links to their respective run environments."],["Several environment variables can be utilized to customize the library's behavior, offering a convenient approach to troubleshoot issues."],["Endpoint overrides for `Executions`, `Jobs`, `Revisions`, `Run Services`, and `Tasks` are configurable via specific environment variables, such as `GOOGLE_CLOUD_CPP_EXECUTIONS_ENDPOINT`."],["Tracing for gRPC calls can be enabled with `GOOGLE_CLOUD_CPP_ENABLE_TRACING=rpc`, and further customized via the `GOOGLE_CLOUD_CPP_TRACING_OPTIONS` variable to modify output behavior."],["Enabling logging within the library is achieved by setting `GOOGLE_CLOUD_CPP_ENABLE_CLOG=yes`, which activates the logging infrastructure to print to a backend or the console."]]],[]]
