How to fix Kubelet cgroup manager error in Kubernetes

KubernetesADVANCEDHIGH

This error occurs when the kubelet cannot properly manage container cgroups, typically due to incorrect driver configuration or cgroup issues.

What this error means

The "Kubelet cgroup manager error" indicates that the kubelet cannot configure cgroups for containers.

1Check kubelet config

cat /etc/kubernetes/kubelet.conf | grep cgroupDriver

2Check container runtime

docker info | grep Cgroup || containerd config dump | grep cgroup

3Update kubelet config

Edit /etc/kubernetes/kubelet.conf to set cgroupDriver

4Update runtime config

Update container runtime cgroup driver

Ensure kubelet and container runtime use same cgroup driver: systemd or cgroupfs.