The instance is being drained. The existing connections to the instance have time to complete, but the new ones are being refused.
Healthy
The instance is reachable i.e. a connection to the application health checking endpoint can be established, and conforms to the requirements defined by the health check.
Timeout
The instance is unreachable i.e. a connection to the application health checking endpoint cannot be established, or the server does not respond within the specified timeout.
UndefinedDetailedHealthState
A value indicating that the enum field is not set.
Unhealthy
The instance is reachable, but does not conform to the requirements defined by the health check.
Unknown
The health checking system is aware of the instance but its health is not known at the moment.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-08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 versioned documentation for the \u003ccode\u003eManagedInstanceInstanceHealth.Types.DetailedHealthState\u003c/code\u003e enum within the Google Cloud Compute Engine v1 API, spanning from version 1.0.0 to the latest version 3.6.0.\u003c/p\u003e\n"],["\u003cp\u003eThe current version highlighted on this page is 3.5.0 of the Google.Cloud.Compute.V1 namespace.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eDetailedHealthState\u003c/code\u003e enum outlines six possible states for an instance's health, including \u003ccode\u003eDraining\u003c/code\u003e, \u003ccode\u003eHealthy\u003c/code\u003e, \u003ccode\u003eTimeout\u003c/code\u003e, \u003ccode\u003eUndefinedDetailedHealthState\u003c/code\u003e, \u003ccode\u003eUnhealthy\u003c/code\u003e, and \u003ccode\u003eUnknown\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eEach version of the documentation has a link to its respective location and information, allowing for easy reference.\u003c/p\u003e\n"]]],[],null,[]]