Configure a Compute Engine MIG in Application Design Center
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A Compute Engine managed instance group (MIG) is a collection of VM instances
that use load balancing and automated services, like autoscaling and
autohealing. With a MIG, you can manage a group of VM instances as one entity.
For more information, see the following:
This document describes the connections and parameters you can configure when
using App Design Center to create a Compute Engine MIG. The
configuration parameters are based on theterraform-google-vmTerraform module.
Component connections
The following table includes the components that you can connect to a
Compute Engine MIG, and the resulting updates to your application and its
generated Terraform code.
Whether to wait for all instances to be created/updated before returning. If set to true, when the operation fails, Terraform continues trying until the timeout is reached.
[[["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 document describes Compute Engine managed instance groups (MIGs), which are collections of VM instances that utilize load balancing and automated services like autoscaling and autohealing, allowing users to manage groups of VMs as a single unit.\u003c/p\u003e\n"],["\u003cp\u003eThe product is currently in a "Pre-GA" stage, meaning it is available "as is," may have limited support, and is subject to the "Pre-GA Offerings Terms" as outlined in the General Service Terms section of the Service Specific Terms.\u003c/p\u003e\n"],["\u003cp\u003eConfiguring a Compute Engine MIG requires setting parameters such as the Project ID, Region, and Instance Template within the App Hub service project, as well as optional parameters to refine the instance group.\u003c/p\u003e\n"],["\u003cp\u003eMIG features include the ability to customize autoscaling parameters, define health checks, set stateful disk and IP configurations, specify update policies, and manage scaling schedules and named ports.\u003c/p\u003e\n"],["\u003cp\u003eThe document provides configuration options for autoscaling controls, such as CPU utilization targets, predictive scaling methods, custom metric-based scaling, and scale-in controls for managing the number of replicas.\u003c/p\u003e\n"]]],[],null,["# Configure a Compute Engine MIG in Application Design Center\n\n| **Preview**\n|\n|\n| This product is subject to the \"Pre-GA Offerings Terms\" in the General Service Terms section\n| of the [Service Specific Terms](/terms/service-terms#1).\n|\n| Pre-GA products are available \"as is\" and might have limited support.\n|\n| For more information, see the\n| [launch stage descriptions](/products#product-launch-stages).\n\nA Compute Engine managed instance group (MIG) is a collection of VM instances\nthat use load balancing and automated services, like autoscaling and\nautohealing. With a MIG, you can manage a group of VM instances as one entity.\nFor more information, see the following:\n\n- [Compute Engine overview](/compute/docs/overview)\n- [Managed instance groups (MIGs)](/compute/docs/instance-groups#managed_instance_groups)\n\nThis document describes the connections and parameters you can configure when\nusing App Design Center to create a Compute Engine MIG. The\nconfiguration parameters are based on the [terraform-google-vm](https://github.com/terraform-google-modules/terraform-google-vm/tree/main/modules/mig)\nTerraform module.\n\nComponent connections\n---------------------\n\nThe following table includes the components that you can connect to a\nCompute Engine MIG, and the resulting updates to your application and its\ngenerated Terraform code.\n\nRequired configuration parameters\n---------------------------------\n\nIf your template includes a Compute Engine MIG component, you\nmust configure the following parameters before you deploy.\n\nOptional configuration parameters\n---------------------------------\n\nThe following parameters are optional. To display advanced parameters, in the\n**Configuration** area, select **Show advanced fields**."]]
