Reference documentation and code samples for the Compute Engine v1 API enum InstanceGroupManagerUpdatePolicy.Types.MostDisruptiveAllowedAction.
Most disruptive action that is allowed to be taken on an instance. You can specify either NONE to forbid any actions, REFRESH to avoid restarting the VM and to limit disruption as much as possible. RESTART to allow actions that can be applied without instance replacing or REPLACE to allow all possible actions. If the Updater determines that the minimal update action needed is more disruptive than most disruptive allowed action you specify it will not perform the update at all.
Additional supported values which may be not listed in the enum directly due to technical reasons:
NONE
REFRESH
REPLACE
RESTART
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-08 UTC."],[[["\u003cp\u003eThe latest version available for \u003ccode\u003eInstanceGroupManagerUpdatePolicy.Types.MostDisruptiveAllowedAction\u003c/code\u003e is 3.6.0, with numerous prior versions ranging back to 1.0.0 accessible for reference.\u003c/p\u003e\n"],["\u003cp\u003eThis enum defines the most disruptive actions allowed during instance updates, such as \u003ccode\u003eNONE\u003c/code\u003e, \u003ccode\u003eREFRESH\u003c/code\u003e, \u003ccode\u003eRESTART\u003c/code\u003e, or \u003ccode\u003eREPLACE\u003c/code\u003e, each with different levels of impact on the virtual machine.\u003c/p\u003e\n"],["\u003cp\u003eThe update policy will not be executed if the necessary action exceeds the user-specified "most disruptive allowed action" such as if a \u003ccode\u003eREPLACE\u003c/code\u003e is necessary but only \u003ccode\u003eNONE\u003c/code\u003e or \u003ccode\u003eREFRESH\u003c/code\u003e is allowed.\u003c/p\u003e\n"],["\u003cp\u003eThe enum is part of the Google Cloud Compute Engine v1 API, specifically within the \u003ccode\u003eGoogle.Cloud.Compute.V1\u003c/code\u003e namespace.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eUndefinedMostDisruptiveAllowedAction\u003c/code\u003e field indicates when the enum value is unset, showing that the state of the field is not set.\u003c/p\u003e\n"]]],[],null,[]]
