Kubelet Service is Unstable due to Invalid vm/Overcommit_memory Kernel Flag

Problem

  • kubelet service is unstable showing the below error in the log:

Failed to start ContainerManager invalid kernel flag: vm/overcommit_memory, expected value: 1, actual value: 0

Environment

  • Platform9 Edge Cloud v-5.3.0

Cause

  • In one of the master node, the vm.overcommit_memory parameter in the /etc/sysctl.conf file set to "0"

#sysctl vm.overcommit_memory

vm.overcommit_memory = 0

Resolution

  • Replace the value of above parameter in the /etc/sysctl.conffile with 1

# overcommit memory

vm.overcommit_memory=0 >>>>>>>>>>>>>> Replace this with 1

  • Run below command to persist the change made above:

# sysctl -p

  • After making the change, confirm if the value is reflected for the parameter:

# sysctl vm.overcommit_memory

  • Check pf9-kubelet.service status, if it is still stuck in failed state, restart once and confirm if it becomes healthy.

# systemctl status pf9-kubelet
# systemctl restart pf9-kubelet


© 2025 Platform9. All Rights Reserved

On This Page
Kubelet Service is Unstable due to Invalid vm/Overcommit_memory Kernel FlagProblemEnvironmentCauseResolution