kubelet status 为activating (auto-restart) 的情况的处理

systemctl status kubelet
● kubelet.service - kubelet: The Kubernetes Node Agent
Loaded: loaded (/etc/systemd/system/kubelet.service; enabled; vendor preset: disabled)
Drop-In: /etc/systemd/system/kubelet.service.d
└─10-kubeadm.conf
Active: activating (auto-restart) (Result: exit-code) since Tue 2019-01-29 23:36:04 PST; 6s ago
Docs: http://kubernetes.io/docs/
Process: 21054 ExecStart=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_CONFIG_ARGS $KUBELET_KUBEADM_ARGS $KUBELET_EXTRA_ARGS (code=exited, status=255)
Main PID: 21054 (code=exited, status=255)

Jan 29 23:36:04 linqi2 systemd[1]: Unit kubelet.service entered failed state.
Jan 29 23:36:04 linqi2 systemd[1]: kubelet.service failed.
[root@linqi2 kubelet]# kubeadm reset
[reset] WARNING: changes made to this host by 'kubeadm init' or 'kubeadm join' will be reverted.
[reset] are you sure you want to proceed? [y/N]: y
[preflight] running pre-flight checks
[reset] stopping the kubelet service
[reset] unmounting mounted directories in "/var/lib/kubelet"
[reset] removing kubernetes-managed containers
[reset] cleaning up running containers using crictl with socket /var/run/dockershim.sock
[reset] failed to list running pods using crictl: exit status 1. Trying to use docker instead[reset] no etcd manifest found in "/etc/kubernetes/manifests/etcd.yaml". Assuming external etcd
[reset] deleting contents of stateful directories: [/var/lib/kubelet /etc/cni/net.d /var/lib/dockershim /var/run/kubernetes]
[reset] deleting contents of config directories: [/etc/kubernetes/manifests /etc/kubernetes/pki]
[reset] deleting files: [/etc/kubernetes/admin.conf /etc/kubernetes/kubelet.conf /etc/kubernetes/bootstrap-kubelet.conf /etc/kubernetes/controller-manager.conf /etc/kubernetes/scheduler.conf]

可以先kubeadm init，如果失败，kubeadm reset，然后再kubeadm init --config kubeadm.yaml 即可

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kubelet status 为activating (auto-restart) 的情况的处理

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