The type of update process. You can specify either PROACTIVE so that the instance group manager proactively executes actions in order to bring instances to their target versions or OPPORTUNISTIC so that no action is proactively executed but the update will be performed as part of other actions (for example, resizes or recreateInstances calls).
Additional supported values which may be not listed in the enum directly due to technical reasons:
PROACTIVE
No action is being proactively performed in order to bring this IGM to its target version distribution (regardless of whether this distribution is expressed using instanceTemplate or versions field).
UndefinedType
A value indicating that the enum field is not set.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-08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 is 3.6.0 for \u003ccode\u003eGoogle.Cloud.Compute.V1.InstanceGroupManagerUpdatePolicy.Types.Type\u003c/code\u003e, with a history of versions ranging back to 1.0.0.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eType\u003c/code\u003e enum outlines the update process for instance group managers, with options like PROACTIVE and OPPORTUNISTIC.\u003c/p\u003e\n"],["\u003cp\u003eThe namespace for this content is \u003ccode\u003eGoogle.Cloud.Compute.V1\u003c/code\u003e, and its associated assembly is \u003ccode\u003eGoogle.Cloud.Compute.V1.dll\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe enum includes fields such as \u003ccode\u003eOpportunistic\u003c/code\u003e, which refers to no proactive actions being performed, and \u003ccode\u003eUndefinedType\u003c/code\u003e, indicating that the enum field is not set.\u003c/p\u003e\n"]]],[],null,[]]
