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 allow actions that do not need instance restart, 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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-08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\u003eThis page provides reference documentation for the \u003ccode\u003eInstanceGroupManagerUpdatePolicy.Types.MostDisruptiveAllowedAction\u003c/code\u003e enum within the Google Cloud Compute Engine v1 API.\u003c/p\u003e\n"],["\u003cp\u003eThe enum defines the most disruptive actions permissible on an instance during updates, including \u003ccode\u003eNONE\u003c/code\u003e, \u003ccode\u003eREFRESH\u003c/code\u003e, \u003ccode\u003eRESTART\u003c/code\u003e, and \u003ccode\u003eREPLACE\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe documentation lists various versions of the API, from version 1.0.0 up to the latest version 3.6.0, indicating the availability of this enum across different releases.\u003c/p\u003e\n"],["\u003cp\u003eThe current page represents version 2.2.0 but can be navigated to any of the other versions, including the latest 3.6.0.\u003c/p\u003e\n"],["\u003cp\u003eThere are multiple ways the instance can be set, either to 'Undefined' or one of the 4 actions.\u003c/p\u003e\n"]]],[],null,[]]