Unless otherwise configured, the client libraries use Application Default Credentials to authenticate with Google Cloud Services. While this works for most applications, in some cases you may need to override this default. You can do so by providing the UnifiedCredentialsOption The following example shows how to explicitly load a service account key file:
[](std::string const& keyfile) {
auto is = std::ifstream(keyfile);
is.exceptions(std::ios::badbit); // Minimal error handling in examples
auto contents = std::string(std::istreambuf_iterator<char>(is.rdbuf()), {});
auto options =
google::cloud::Options{}.set<google::cloud::UnifiedCredentialsOption>(
google::cloud::MakeServiceAccountCredentials(contents));
return google::cloud::gkehub_v1::GkeHubClient(
google::cloud::gkehub_v1::MakeGkeHubConnection(options));
}
[[["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."],[[["This page provides documentation for various versions of the GKE Hub client library, ranging from version 2.11.0 up to the latest release candidate 2.37.0-rc."],["The documentation explains how to override the default authentication credentials using the `UnifiedCredentialsOption` when interacting with Google Cloud services, allowing for the specification of custom credentials."],["A practical example demonstrates how to load credentials from a service account key file using the `UnifiedCredentialsOption` and `MakeServiceAccountCredentials`."],["Users are advised to consult the \"Best practices for managing service account keys\" guide for security and management details when using service account keys."],["The authentication components page is linked for additional details on how to create `google::cloud::Credentials` objects."]]],[]]