无法删除 flannel 插件

Question

我正在尝试将网络插件从 flannel 切换到其他东西，仅用于教育目的。

法兰绒是通过以下方式安装的：

kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

所以为了去除它我正在尝试

kubectl delete -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

结果我得到了：

k8s@k8s-master:~$ kubectl delete -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
Error from server (NotFound): error when deleting "https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml": clusterroles.rbac.authorization.k8s.io "flannel" not found
Error from server (NotFound): error when deleting "https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml": clusterrolebindings.rbac.authorization.k8s.io "flannel" not found
Error from server (NotFound): error when deleting "https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml": serviceaccounts "flannel" not found
Error from server (NotFound): error when deleting "https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml": configmaps "kube-flannel-cfg" not found
error when stopping "https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml": timed out waiting for the condition

这很奇怪，因为几个小时前我已经用编织做了这样的操作并且工作得很好。

Answer 1

我在输出中遇到了类似的错误：

kubectl delete -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml
Error from server (NotFound): error when deleting "https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml": podsecuritypolicies.policy "psp.flannel.unprivileged" not found
Error from server (NotFound): error when deleting "https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml": clusterroles.rbac.authorization.k8s.io "flannel" not found
Error from server (NotFound): error when deleting "https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml": clusterrolebindings.rbac.authorization.k8s.io "flannel" not found
Error from server (NotFound): error when deleting "https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml": serviceaccounts "flannel" not found
Error from server (NotFound): error when deleting "https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml": configmaps "kube-flannel-cfg" not found
Error from server (NotFound): error when deleting "https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml": daemonsets.apps "kube-flannel-ds-amd64" not found
Error from server (NotFound): error when deleting "https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml": daemonsets.apps "kube-flannel-ds-arm64" not found
Error from server (NotFound): error when deleting "https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml": daemonsets.apps "kube-flannel-ds-arm" not found
Error from server (NotFound): error when deleting "https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml": daemonsets.apps "kube-flannel-ds-ppc64le" not found
Error from server (NotFound): error when deleting "https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml": daemonsets.apps "kube-flannel-ds-s390x" not found

解决方案是更改步骤顺序，首先重新安装 kubernetes 环境，然后在损坏的环境上重新部署 flannel，然后将其删除。

kubeadm reset

systemctl daemon-reload && systemctl restart kubelet

kubeadm init --pod-network-cidr=10.244.0.0/16

kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

kubectl delete -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

注意：您可能还需要手动卸载 flannel 驱动程序，即 vxlan 模块：

rmmod vxlan