[[["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 2025-08-14 UTC."],[[["\u003cp\u003eThe latest version available is 2.37.0-rc, which can be accessed via the provided link.\u003c/p\u003e\n"],["\u003cp\u003eThis page provides access to a range of versions, starting from 2.15.1 up to the latest release candidate, 2.37.0-rc.\u003c/p\u003e\n"],["\u003cp\u003eAll versions link to documentation regarding the \u003ccode\u003ecompute_instances_v1_1_1InstancesClient-service-account-snippet\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe content includes an example snippet demonstrating how to override default authentication settings for \u003ccode\u003ecompute_instances_v1::InstancesClient\u003c/code\u003e.\u003c/p\u003e\n"]]],[],null,["Version latestkeyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/compute/latest/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.41.0](/cpp/docs/reference/compute/2.41.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.40.0](/cpp/docs/reference/compute/2.40.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.39.0](/cpp/docs/reference/compute/2.39.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.38.0](/cpp/docs/reference/compute/2.38.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.37.0](/cpp/docs/reference/compute/2.37.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.36.0](/cpp/docs/reference/compute/2.36.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.35.0](/cpp/docs/reference/compute/2.35.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.34.0](/cpp/docs/reference/compute/2.34.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.33.0](/cpp/docs/reference/compute/2.33.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.32.0](/cpp/docs/reference/compute/2.32.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.31.0](/cpp/docs/reference/compute/2.31.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.30.0](/cpp/docs/reference/compute/2.30.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.29.0](/cpp/docs/reference/compute/2.29.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.28.0](/cpp/docs/reference/compute/2.28.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.27.0](/cpp/docs/reference/compute/2.27.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.26.0](/cpp/docs/reference/compute/2.26.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.25.1](/cpp/docs/reference/compute/2.25.1/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.24.0](/cpp/docs/reference/compute/2.24.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.23.0](/cpp/docs/reference/compute/2.23.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.22.1](/cpp/docs/reference/compute/2.22.1/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.21.0](/cpp/docs/reference/compute/2.21.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.20.0](/cpp/docs/reference/compute/2.20.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.19.0](/cpp/docs/reference/compute/2.19.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.18.0](/cpp/docs/reference/compute/2.18.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.17.0](/cpp/docs/reference/compute/2.17.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.16.0](/cpp/docs/reference/compute/2.16.0/compute_instances_v1_1_1InstancesClient-service-account-snippet)\n- [2.15.1](/cpp/docs/reference/compute/2.15.1/compute_instances_v1_1_1InstancesClient-service-account-snippet) \n\nOverride compute_instances_v1::InstancesClient Authentication Defaults\n======================================================================\n\n [](std::string const& keyfile) {\n auto is = std::ifstream(keyfile);\n is.exceptions(std::ios::badbit); // Minimal error handling in examples\n auto contents = std::string(std::istreambuf_iterator\u003cchar\u003e(is.rdbuf()), {});\n auto options =\n google::cloud::Options{}.set\u003cgoogle::cloud::UnifiedCredentialsOption\u003e(\n google::cloud::MakeServiceAccountCredentials(contents));\n return google::cloud::compute_instances_v1::InstancesClient(\n google::cloud::compute_instances_v1::MakeInstancesConnectionRest(\n options));\n }"]]