Check if a Compute Engine instance is preemptible
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This sample checks if a given Compute Engine instance is preemptible or not.
Code sample
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[[["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"]],[],[[["\u003cp\u003eThis content provides code samples in Go, Java, Node.js, and Python to check if a Compute Engine instance is preemptible.\u003c/p\u003e\n"],["\u003cp\u003eEach sample requires setting up Application Default Credentials for authentication and refers to Compute Engine API documentation for further details.\u003c/p\u003e\n"],["\u003cp\u003eThe code samples use the Compute Engine client libraries to retrieve instance information, including the preemptible status.\u003c/p\u003e\n"],["\u003cp\u003eUsers need to provide the project ID, zone, and instance name as parameters for the provided functions in order to test their instance.\u003c/p\u003e\n"],["\u003cp\u003eThe provided code samples also guide users on initial steps such as setting up compute engine, and finding sample code for other Google Cloud Products.\u003c/p\u003e\n"]]],[],null,["# Check if a Compute Engine instance is preemptible\n\nThis sample checks if a given Compute Engine instance is preemptible or not.\n\nCode sample\n-----------\n\n### Go\n\n\nBefore trying this sample, follow the Go setup instructions in the\n[Compute Engine quickstart using\nclient libraries](/compute/docs/api/using-libraries).\n\n\nFor more information, see the\n[Compute Engine Go API\nreference documentation](/go/docs/reference/cloud.google.com/go/compute/latest/apiv1).\n\n\nTo authenticate to Compute Engine, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n import (\n \t\"context\"\n \t\"fmt\"\n \t\"io\"\n\n \tcompute \"cloud.google.com/go/compute/apiv1\"\n \tcomputepb \"cloud.google.com/go/compute/apiv1/computepb\"\n )\n\n // printPreemtible prints if a given instance is preemptible or not.\n func printPreemtible(w io.Writer, projectID, zone, instanceName string) error {\n \t// projectID := \"your_project_id\"\n \t// zone := \"europe-central2-b\"\n \t// instanceName := \"your_instance_name\"\n\n \tctx := context.Background()\n \tinstancesClient, err := compute.https://cloud.google.com/go/docs/reference/cloud.google.com/go/compute/latest/apiv1.html#cloud_google_com_go_compute_apiv1_InstancesClient_NewInstancesRESTClient(ctx)\n \tif err != nil {\n \t\treturn fmt.Errorf(\"NewInstancesRESTClient: %w\", err)\n \t}\n \tdefer instancesClient.Close()\n\n \treq := &computepb.GetInstanceRequest{\n \t\tProject: projectID,\n \t\tZone: zone,\n \t\tInstance: instanceName,\n \t}\n\n \tinstance, err := instancesClient.Get(ctx, req)\n \tif err != nil {\n \t\treturn fmt.Errorf(\"unable to get instance: %w\", err)\n \t}\n\n \tfmt.Fprintf(w, \"Is instance preemptible: %v\\n\", instance.GetScheduling().GetPreemptible())\n\n \treturn nil\n }\n\n### Java\n\n\nBefore trying this sample, follow the Java setup instructions in the\n[Compute Engine quickstart using\nclient libraries](/compute/docs/api/using-libraries).\n\n\nFor more information, see the\n[Compute Engine Java API\nreference documentation](/java/docs/reference/google-cloud-compute/latest/overview).\n\n\nTo authenticate to Compute Engine, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n\n import com.google.cloud.compute.v1.https://cloud.google.com/java/docs/reference/google-cloud-compute/latest/com.google.cloud.compute.v1.Instance.html;\n import com.google.cloud.compute.v1.https://cloud.google.com/java/docs/reference/google-cloud-compute/latest/com.google.cloud.compute.v1.InstancesClient.html;\n import java.io.IOException;\n\n public class IsPreemptible {\n\n public static void main(String[] args) throws IOException {\n // TODO(developer): Replace these variables before running the sample.\n // projectId: project ID or project number of the Cloud project you want to use.\n // zone: name of the zone you want to use. For example: \"us-west3-b\"\n // instanceName: name of the virtual machine to check.\n String projectId = \"your-project-id-or-number\";\n String zone = \"zone-name\";\n String instanceName = \"instance-name\";\n\n isPreemptible(projectId, zone, instanceName);\n }\n\n // Check if a given instance is preemptible or not.\n public static void isPreemptible(String projectId, String zone, String instanceName)\n throws IOException {\n\n try (Insthttps://cloud.google.com/java/docs/reference/google-cloud-compute/latest/com.google.cloud.compute.v1.InstancesClient.htmltancesClient = Insthttps://cloud.google.com/java/docs/reference/google-cloud-compute/latest/com.google.cloud.compute.v1.InstancesClient.htmlate()) {\n Insthttps://cloud.google.com/java/docs/reference/google-cloud-compute/latest/com.google.cloud.compute.v1.Instance.htmltance = instancesClient.get(projectId, zone, instanceName);\n boolean isPreemptible = instinstance.https://cloud.google.com/java/docs/reference/google-cloud-compute/latest/com.google.cloud.compute.v1.Instance.html#com_google_cloud_compute_v1_Instance_getScheduling__()Preemptible();\n\n System.out.printf(\"Preemptible status: %s\", isPreemptible);\n }\n }\n }\n\n### Node.js\n\n\nBefore trying this sample, follow the Node.js setup instructions in the\n[Compute Engine quickstart using\nclient libraries](/compute/docs/api/using-libraries).\n\n\nFor more information, see the\n[Compute Engine Node.js API\nreference documentation](/nodejs/docs/reference/compute/latest).\n\n\nTo authenticate to Compute Engine, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n /**\n * TODO(developer): Uncomment and replace these variables before running the sample.\n */\n // const projectId = 'YOUR_PROJECT_ID';\n // const zone = 'europe-central2-b';\n // const instanceName = 'YOUR_INSTANCE_NAME';\n\n const compute = require('https://cloud.google.com/nodejs/docs/reference/compute/latest/overview.html');\n\n async function printPreemptible() {\n const instancesClient = new compute.https://cloud.google.com/nodejs/docs/reference/compute/latest/overview.html();\n\n const [instance] = await instancesClient.get({\n project: projectId,\n zone,\n instance: instanceName,\n });\n\n console.log(`Is instance preemptible: ${instance.scheduling.preemptible}`);\n }\n\n printPreemptible();\n\n### Python\n\n\nBefore trying this sample, follow the Python setup instructions in the\n[Compute Engine quickstart using\nclient libraries](/compute/docs/api/using-libraries).\n\n\nFor more information, see the\n[Compute Engine Python API\nreference documentation](/python/docs/reference/compute/latest).\n\n\nTo authenticate to Compute Engine, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n from google.cloud import https://cloud.google.com/python/docs/reference/compute/latest/\n\n\n def is_preemptible(project_id: str, zone: str, instance_name: str) -\u003e bool:\n \"\"\"\n Check if a given instance is preemptible or not.\n Args:\n project_id: project ID or project number of the Cloud project you want to use.\n zone: name of the zone you want to use. For example: \"us-west3-b\"\n instance_name: name of the virtual machine to check.\n Returns:\n The preemptible status of the instance.\n \"\"\"\n instance_client = https://cloud.google.com/python/docs/reference/compute/latest/.https://cloud.google.com/python/docs/reference/compute/latest/google.cloud.compute_v1.services.instances.InstancesClient.html()\n instance = instance_client.https://cloud.google.com/python/docs/reference/compute/latest/google.cloud.compute_v1.services.instances.InstancesClient.html#google_cloud_compute_v1_services_instances_InstancesClient_get(\n project=project_id, zone=zone, instance=instance_name\n )\n return instance.scheduling.preemptible\n\nWhat's next\n-----------\n\n\nTo search and filter code samples for other Google Cloud products, see the\n[Google Cloud sample browser](/docs/samples?product=compute)."]]
