1 k8s版本 1.23.0，docker-ce版本20.10.14
2 问题报错，启动kubelet报错，内容如下
May 16 09:47:13 k8s-master kubelet: E0516 09:47:13.512956 7403 server.go:302] "Failed to run kubelet" err="failed to run Kubelet: misconfiguration: kubelet cgroup driver: "systemd" is different from docker cgroup driver: "cgroupfs"" May 16 09:47:13 k8s-master systemd: kubelet.service: main process exited, code=exited, status=1/FAILURE May 16 09:47:13 k8s-master systemd: Unit kubelet.service entered failed state. May 16 09:47:13 k8s-master systemd: kubelet.service failed
3 问题分析，根据报错，原因应该是kubelet的cgroupfs与docker不一致导致的
4 问题解决，修改docker配置
cat > /etc/docker/daemon.json <5 再重启docker，问题解决
[root@k8s-master ~]# systemctl restart docker [root@k8s-master ~]# systemctl restart kubelet [root@k8s-master ~]# [root@k8s-master ~]# systemctl status kubelet ● kubelet.service - kubelet: The Kubernetes Node Agent Loaded: loaded (/usr/lib/systemd/system/kubelet.service; enabled; vendor preset: disabled) Drop-In: /usr/lib/systemd/system/kubelet.service.d └─10-kubeadm.conf Active: active (running) since Mon 2022-05-16 09:48:06 CST; 3s ago Docs: https://kubernetes.io/docs/ Main PID: 8226 (kubelet) Tasks: 23 Memory: 56.9M CGroup: /system.slice/kubelet.service ├─8226 /usr/bin/kubelet --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf --config... └─8745 /opt/cni/bin/calico
