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 2025-03-21 UTC."],[[["This webpage provides access to documentation for various versions of the GKE Hub client library, ranging from version 2.11.0 to the latest release candidate, 2.37.0-rc."],["The client libraries typically use Application Default Credentials for authentication, but can be overridden using the UnifiedCredentialsOption, allowing users to specify authentication details."],["Overriding default authentication can be accomplished by loading a service account key file, as demonstrated in the example code provided, utilizing the `MakeServiceAccountCredentials` function."],["For detailed guidance on managing service account keys, users are advised to refer to the \"Best practices for managing service account keys\" guide, available on Google Cloud's documentation site."],["More information on the factory functions to create `google::cloud::Credentials` objects can be found in the Authentication Components section of the documentation."]]],[]]
