An idiomatic C++ client library for theAnthos Multi-Cloud API. This API provides a way to manage Kubernetes clusters that run on AWS and Azure infrastructure. Combined with Connect, you can manage Kubernetes clusters on Google Cloud, AWS, and Azure from the Google Cloud Console. When you create a cluster with Anthos Multi-Cloud, Google creates the resources needed and brings up a cluster on your behalf. You can deploy workloads with the Anthos Multi-Cloud API or the gcloud and kubectl command-line tools.
While this library isGA, please note that the Google Cloud C++ client libraries donotfollowSemantic Versioning.
Quickstart
The following shows the code that you'll run in thegoogle/cloud/gkemulticloud/quickstart/directory, which should give you a taste of the Anthos Multi-Cloud API C++ client library API.
#include "google/cloud/gkemulticloud/v1/attached_clusters_client.h"
#include <iostream>
int main(int argc, char* argv[]) try {
if (argc != 3) {
std::cerr << "Usage: " << argv[0] << " project-id region-id\n";
return 1;
}
namespace gkemulticloud = ::google::cloud::gkemulticloud_v1;
auto const region = std::string{argv[2]};
auto client = gkemulticloud::AttachedClustersClient(
gkemulticloud::MakeAttachedClustersConnection(region));
auto const parent =
std::string{"projects/"} + argv[1] + "/locations/" + region;
for (auto r : client.ListAttachedClusters(parent)) {
if (!r) throw std::move(r).status();
std::cout << r->DebugString() << "\n";
}
return 0;
} catch (google::cloud::Status const& status) {
std::cerr << "google::cloud::Status thrown: " << status << "\n";
return 1;
}
Main classes
This library offers multiple*Clientclasses, which are listed below. Each one of these classes exposes all the RPCs for a gRPCserviceas member functions of the class. This library groups multiple gRPC services because they are part of the same product or are often used together. A typical example may be the administrative and data plane operations for a single product.
The library also has other classes that provide helpers, configuration parameters, and infrastructure to mock the*Clientclasses when testing your application.
The library automatically retries requests that fail with transient errors, and usesexponential backoffto backoff between retries. Application developers can override the default policies.
More Information
Error Handling- describes how the library reports errors.
[[["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 2025-09-04 UTC."],[[["\u003cp\u003eThis webpage details the Anthos Multi-Cloud API C++ Client Library, which facilitates the management of Kubernetes clusters across AWS and Azure infrastructures, and provides a unified management experience with Google Cloud through Connect.\u003c/p\u003e\n"],["\u003cp\u003eThe library provides multiple \u003ccode\u003e*Client\u003c/code\u003e classes, including \u003ccode\u003eAttachedClustersClient\u003c/code\u003e, \u003ccode\u003eAwsClustersClient\u003c/code\u003e, and \u003ccode\u003eAzureClustersClient\u003c/code\u003e, each designed to expose RPCs for managing various aspects of the Multi-Cloud API.\u003c/p\u003e\n"],["\u003cp\u003eThe current versioning history for this library is extensive, with a list of versions starting from 2.11.0 and going up to the latest release candidate 2.37.0-rc.\u003c/p\u003e\n"],["\u003cp\u003eThe C++ client library automatically retries failed requests using exponential backoff and allows application developers to override default policies for operations.\u003c/p\u003e\n"],["\u003cp\u003eThe library does not follow semantic versioning, despite being in GA, it also contains useful links for error handling, overriding endpoints, changing credentials and a list of environmental variables to configure the library's behaviour.\u003c/p\u003e\n"]]],[],null,["Version 2.11.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/gkemulticloud/latest)\n- [2.41.0](/cpp/docs/reference/gkemulticloud/2.41.0)\n- [2.40.0](/cpp/docs/reference/gkemulticloud/2.40.0)\n- [2.39.0](/cpp/docs/reference/gkemulticloud/2.39.0)\n- [2.38.0](/cpp/docs/reference/gkemulticloud/2.38.0)\n- [2.37.0](/cpp/docs/reference/gkemulticloud/2.37.0)\n- [2.36.0](/cpp/docs/reference/gkemulticloud/2.36.0)\n- [2.35.0](/cpp/docs/reference/gkemulticloud/2.35.0)\n- [2.34.0](/cpp/docs/reference/gkemulticloud/2.34.0)\n- [2.33.0](/cpp/docs/reference/gkemulticloud/2.33.0)\n- [2.32.0](/cpp/docs/reference/gkemulticloud/2.32.0)\n- [2.31.0](/cpp/docs/reference/gkemulticloud/2.31.0)\n- [2.30.0](/cpp/docs/reference/gkemulticloud/2.30.0)\n- [2.29.0](/cpp/docs/reference/gkemulticloud/2.29.0)\n- [2.28.0](/cpp/docs/reference/gkemulticloud/2.28.0)\n- [2.27.0](/cpp/docs/reference/gkemulticloud/2.27.0)\n- [2.26.0](/cpp/docs/reference/gkemulticloud/2.26.0)\n- [2.25.1](/cpp/docs/reference/gkemulticloud/2.25.1)\n- [2.24.0](/cpp/docs/reference/gkemulticloud/2.24.0)\n- [2.23.0](/cpp/docs/reference/gkemulticloud/2.23.0)\n- [2.22.1](/cpp/docs/reference/gkemulticloud/2.22.1)\n- [2.21.0](/cpp/docs/reference/gkemulticloud/2.21.0)\n- [2.20.0](/cpp/docs/reference/gkemulticloud/2.20.0)\n- [2.19.0](/cpp/docs/reference/gkemulticloud/2.19.0)\n- [2.18.0](/cpp/docs/reference/gkemulticloud/2.18.0)\n- [2.17.0](/cpp/docs/reference/gkemulticloud/2.17.0)\n- [2.16.0](/cpp/docs/reference/gkemulticloud/2.16.0)\n- [2.15.1](/cpp/docs/reference/gkemulticloud/2.15.1)\n- [2.14.0](/cpp/docs/reference/gkemulticloud/2.14.0)\n- [2.13.0](/cpp/docs/reference/gkemulticloud/2.13.0)\n- [2.12.0](/cpp/docs/reference/gkemulticloud/2.12.0)\n- [2.11.0](/cpp/docs/reference/gkemulticloud/2.11.0) \n\nAnthos Multi-Cloud API C++ Client Library\n=========================================\n\nAn idiomatic C++ client library for the [Anthos Multi-Cloud API](https://cloud.google.com/anthos/clusters/docs/multi-cloud). This API provides a way to manage Kubernetes clusters that run on AWS and Azure infrastructure. Combined with Connect, you can manage Kubernetes clusters on Google Cloud, AWS, and Azure from the Google Cloud Console. When you create a cluster with Anthos Multi-Cloud, Google creates the resources needed and brings up a cluster on your behalf. You can deploy workloads with the Anthos Multi-Cloud API or the gcloud and kubectl command-line tools.\n\nWhile this library is **GA** , please note that the Google Cloud C++ client libraries do **not** follow [Semantic Versioning](https://semver.org/).\n\n### Quickstart\n\nThe following shows the code that you'll run in the `google/cloud/gkemulticloud/quickstart/` directory, which should give you a taste of the Anthos Multi-Cloud API C++ client library API. \n\n #include \"google/cloud/gkemulticloud/v1/attached_clusters_client.h\"\n #include \u003ciostream\u003e\n\n int main(int argc, char* argv[]) try {\n if (argc != 3) {\n std::cerr \u003c\u003c \"Usage: \" \u003c\u003c argv[0] \u003c\u003c \" project-id region-id\\n\";\n return 1;\n }\n\n namespace gkemulticloud = ::google::cloud::gkemulticloud_v1;\n auto const region = std::string{argv[2]};\n auto client = gkemulticloud::AttachedClustersClient(\n gkemulticloud::MakeAttachedClustersConnection(region));\n\n auto const parent =\n std::string{\"projects/\"} + argv[1] + \"/locations/\" + region;\n for (auto r : client.ListAttachedClusters(parent)) {\n if (!r) throw std::move(r).status();\n std::cout \u003c\u003c r-\u003eDebugString() \u003c\u003c \"\\n\";\n }\n\n return 0;\n } catch (google::cloud::Status const& status) {\n std::cerr \u003c\u003c \"google::cloud::Status thrown: \" \u003c\u003c status \u003c\u003c \"\\n\";\n return 1;\n }\n\n### Main classes\n\nThis library offers multiple `*Client` classes, which are listed below. Each one of these classes exposes all the RPCs for a gRPC `service` as member functions of the class. This library groups multiple gRPC services because they are part of the same product or are often used together. A typical example may be the administrative and data plane operations for a single product.\n\nThe library also has other classes that provide helpers, configuration parameters, and infrastructure to mock the `*Client` classes when testing your application.\n\n- [`gkemulticloud_v1::AttachedClustersClient`](/cpp/docs/reference/gkemulticloud/2.11.0/classgoogle_1_1cloud_1_1gkemulticloud__v1_1_1AttachedClustersClient)\n- [`gkemulticloud_v1::AwsClustersClient`](/cpp/docs/reference/gkemulticloud/2.11.0/classgoogle_1_1cloud_1_1gkemulticloud__v1_1_1AwsClustersClient)\n- [`gkemulticloud_v1::AzureClustersClient`](/cpp/docs/reference/gkemulticloud/2.11.0/classgoogle_1_1cloud_1_1gkemulticloud__v1_1_1AzureClustersClient)\n\n### Retry, Backoff, and Idempotency Policies.\n\nThe library automatically retries requests that fail with transient errors, and uses [exponential backoff](https://en.wikipedia.org/wiki/Exponential_backoff) to backoff between retries. Application developers can override the default policies.\n\n### More Information\n\n- [Error Handling](https://cloud.google.com/cpp/docs/reference/common/latest/common-error-handling.html) - describes how the library reports errors.\n- [How to Override the Default Endpoint](/cpp/docs/reference/gkemulticloud/2.11.0/gkemulticloud-override-endpoint) - describes how to override the default endpoint.\n- [How to Override the Authentication Credentials](/cpp/docs/reference/gkemulticloud/2.11.0/gkemulticloud-override-authentication) - describes how to change the authentication credentials used by the library.\n- [Environment Variables](/cpp/docs/reference/gkemulticloud/2.11.0/gkemulticloud-env) - describes environment variables that can configure the behavior of the library."]]