Version 1.15. This version is no longer supported. For information about how to upgrade to version 1.16, seeUpgrade clustersin the latest documentation. For more information about supported and unsupported versions, see theVersion historypage in the latest documentation.
Occasionally, Google Distributed Cloud may run into conditions where you need to
start an upgrade over again, or fix an error condition to complete the upgrade
successfully. The following conditions may occur when upgrading clusters. Try
to complete the cluster upgrade as noted with the condition.
Recover admin, hybrid, and standalone cluster upgrades
Admin, hybrid, and standalone clusters are all upgraded with thebmctl upgradecommand.
If your upgrade doesn't complete successfully, check the following conditions
and try the upgrade again.
bmctlfails to parse the config file due to a mistake. Fix the config file
and rerun the command.
bmctlfails to bootstrap the temporary cluster. Retry the command.
the log files indicate that the upgrade failed apreflight check. Correct the preflight condition, or force
the upgrade.
the upgrade took too long (more than 30 minutes) or timed out. Retry the
upgrade command.
If your upgrade doesn't complete successfully, check the following conditions
and try the upgrade again.
Preflight check failed. Check the preflight check log and fix the
corresponding error.
You may need to construct a new preflight custom resourcefollowing these instructionsand apply it to the cluster. Check that the
triggered preflight passes, and that the cluster reconciler
picks up the latest passing state.
[[["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 2025-09-04 UTC."],[[["\u003cp\u003eUpgrades for admin, hybrid, and standalone clusters in Google Distributed Cloud are managed via the \u003ccode\u003ebmctl upgrade\u003c/code\u003e command, and failure can result from config parsing errors, issues with bootstrapping the temporary cluster, failed preflight checks, or timeouts.\u003c/p\u003e\n"],["\u003cp\u003eUser cluster upgrades are initiated from an associated admin cluster using the \u003ccode\u003ekubectl apply\u003c/code\u003e command, and upgrade failures may be due to issues with a failed preflight check.\u003c/p\u003e\n"],["\u003cp\u003eIf a preflight check fails, the user must fix the corresponding error in order to proceed.\u003c/p\u003e\n"],["\u003cp\u003eIf the upgrade command encounters issues or fails, the user will need to rectify the situation and retry the upgrade.\u003c/p\u003e\n"]]],[],null,["# Recover a failed upgrade in Google Distributed Cloud\n\n\u003cbr /\u003e\n\nOccasionally, Google Distributed Cloud may run into conditions where you need to\nstart an upgrade over again, or fix an error condition to complete the upgrade\nsuccessfully. The following conditions may occur when upgrading clusters. Try\nto complete the cluster upgrade as noted with the condition.\n\nRecover admin, hybrid, and standalone cluster upgrades\n------------------------------------------------------\n\nAdmin, hybrid, and standalone clusters are all upgraded with the [`bmctl upgrade`\ncommand](/anthos/clusters/docs/bare-metal/1.15/how-to/upgrade).\n\nIf your upgrade doesn't complete successfully, check the following conditions\nand try the upgrade again.\n\n- `bmctl` fails to parse the config file due to a mistake. Fix the config file and rerun the command.\n- `bmctl` fails to bootstrap the temporary cluster. Retry the command.\n- the log files indicate that the upgrade failed a [preflight check](/anthos/clusters/docs/bare-metal/1.15/installing/preflight). Correct the preflight condition, or force the upgrade.\n- the upgrade took too long (more than 30 minutes) or timed out. Retry the upgrade command.\n\nRecover user cluster upgrades\n-----------------------------\n\nUser clusters are [upgraded from an associated admin cluster](/anthos/clusters/docs/bare-metal/1.15/how-to/upgrade)\nwith the `kubectl apply` command.\n\nIf your upgrade doesn't complete successfully, check the following conditions\nand try the upgrade again.\n\n- Preflight check failed. Check the preflight check log and fix the corresponding error.\n- You may need to construct a new preflight custom resource [following these instructions](/anthos/clusters/docs/bare-metal/1.15/installing/preflight#re-enabling_preflight_checks) and apply it to the cluster. Check that the triggered preflight passes, and that the cluster reconciler picks up the latest passing state."]]
