This page describes how to update the admin node image type. This affects the osImageType field in the admin cluster configuration file for Google Distributed Cloud.
You can update the admin node image type with the gkectl update admin command as described here.
Update the admin node image type to COS
In your admin cluster configuration file, set osImageType to cos
For each of your admin clusters, run gkectl update command:
[[["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 2025-08-07 UTC."],[[["\u003cp\u003eThis guide outlines how to modify the \u003ccode\u003eosImageType\u003c/code\u003e field in the admin cluster configuration file for Google Distributed Cloud.\u003c/p\u003e\n"],["\u003cp\u003eYou can update the admin node image type by using the \u003ccode\u003egkectl update admin\u003c/code\u003e command.\u003c/p\u003e\n"],["\u003cp\u003eTo change the image type to COS, set \u003ccode\u003eosImageType\u003c/code\u003e to \u003ccode\u003ecos\u003c/code\u003e in your configuration file.\u003c/p\u003e\n"],["\u003cp\u003eTo change the image type to Ubuntu, set \u003ccode\u003eosImageType\u003c/code\u003e to \u003ccode\u003eubuntu_containerd\u003c/code\u003e in your configuration file.\u003c/p\u003e\n"]]],[],null,[]]
