K8s加入集群报错

# detected "cgroupfs" as the Docker cgroup driver. The recommended driver is "systemd".

[preflight] Running pre-flight checks
        [WARNING IsDockerSystemdCheck]: detected "cgroupfs" as the Docker cgroup driver. The recommended driver is "systemd". Please follow the guide at https://kubernetes.io/docs/setup/cri/
        [WARNING SystemVerification]: this Docker version is not on the list of validated versions: 20.10.7. Latest validated version: 19.03
error execution phase preflight: [preflight] Some fatal errors occurred:
        [ERROR FileAvailable--etc-kubernetes-kubelet.conf]: /etc/kubernetes/kubelet.conf already exists
        [ERROR FileAvailable--etc-kubernetes-pki-ca.crt]: /etc/kubernetes/pki/ca.crt already exists
[preflight] If you know what you are doing, you can make a check non-fatal with `--ignore-preflight-errors=...`

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# 解决方法

cat <<EOF> /etc/docker/daemon.json 
 {
   "exec-opts": ["native.cgroupdriver=systemd"]
}
EOF

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# 重启docker

systemctl restart docker

# 重新加入集群

 kubeadm join 10.0.2.6:6443 --token rxn33c.3z6vnm9c9bijkx1j \
     --discovery-token-ca-cert-hash sha256:7ecf04dffe200a96149907498f0fd1833d92e3f416e3874ca2871ec5d4f2d376

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# /etc/kubernetes/kubelet.conf already exists

[preflight] Running pre-flight checks
        [WARNING SystemVerification]: this Docker version is not on the list of validated versions: 20.10.7. Latest validated version: 19.03
error execution phase preflight: [preflight] Some fatal errors occurred:
        [ERROR FileAvailable--etc-kubernetes-kubelet.conf]: /etc/kubernetes/kubelet.conf already exists
        [ERROR FileAvailable--etc-kubernetes-pki-ca.crt]: /etc/kubernetes/pki/ca.crt already exists
[preflight] If you know what you are doing, you can make a check non-fatal with `--ignore-preflight-errors=...`
To see the stack trace of this error execute with --v=5 or higher

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# 解决方法

[root@k8s-node01 k8s_images]# 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

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# 重新加入

kubeadm join 10.0.2.6:6443 --token rxn33c.3z6vnm9c9bijkx1j \
    --discovery-token-ca-cert-hash sha256:7ecf04dffe200a96149907498f0fd1833d92e3f416e3874ca2871ec5d4f2d376

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# 加入完查看

kubectl get nodes

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上次更新: 2021/11/13, 02:56:17

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