PowerFlex 4.X : Error: 'cmo.maintenance.mode' already has a value (false), and --overwrite is false
Summary: PowerFlex Manager 4.x : Trying to label a node with cmo.maintenance.mode=true returns error: 'cmo.maintenance.mode' already has a value (false), and --overwrite is false
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Symptoms
PowerFlex Manager 4.x : Trying to label a node with cmo.maintenance.mode=true returns error: 'cmo.maintenance.mode' already has a value (false), and --overwrite is false
delladmin@mvm03:~> kubectl label node mvm01 cmo.maintenance.mode=true
error: 'cmo.maintenance.mode' already has a value (false), and --overwrite is false
delladmin@mvm03:~> sudo su -
mvm03:~ # kubectl label node mvm01 cmo.maintenance.mode=true
error: 'cmo.maintenance.mode' already has a value (false), and --overwrite is false
Cause
Previous Firmware update had set the cmo.maintenance.mode to false post-upgrade instead of removing the label on the node. cmo.maintenance.mode=false is not expected to be set when trying to label the node to place it again in maintenance mode.
Resolution
Run the below command to unset the label:-
Now you can proceed with the command to label the node with cmo.maintenance.mode=true label
kubectl label node <nodename> cmo.maintenance.mode-
Example:-
mvm03:~ # kubectl label node mvm01 cmo.maintenance.mode-
node/mvm01 unlabeled
Now you can proceed with the command to label the node with cmo.maintenance.mode=true label
Article Properties
Article Number: 000227681
Article Type: Solution
Last Modified: 02 Jan 2026
Version: 2
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