KubeAdm无法配置 - 无法连接到服务器：EOF

Question

我在ubuntu 18.06上配置运行kubeadm的K8S时遇到问题。

在master 1节点上执行kubeadm-init之后一切顺利：

To start using your cluster, you need to run the following as a regular user:

  mkdir -p $HOME/.kube
  sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
  sudo chown $(id -u):$(id -g) $HOME/.kube/config

You should now deploy a pod network to the cluster.
Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
  https://kubernetes.io/docs/concepts/cluster-administration/addons/

You can now join any number of machines by running the following on each node
as root:

  kubeadm join 172.40.0.10:6443 --token oormjp.gf43botx19purn13 --discovery-token-ca-cert-hash sha256:5e9c917221233fdae445640415fac123204f41d31d072cd06545055187c860e2

所以我按照以下命令执行：

mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
export KUBECONFIG=/etc/kubernetes/admin.conf

当我测试kubeclt版本时，我得到：

Client Version: version.Info{Major:"1", Minor:"13", GitVersion:"v1.13.4", GitCommit:"c27b913fddd1a6c480c229191a087698aa92f0b1", GitTreeState:"clean", BuildDate:"2019-02-28T13:37:52Z", GoVersion:"go1.11.5", Compiler:"gc", Platform:"linux/amd64"}
Unable to connect to the server: EOF

当我想安装CNI如织法或法兰绒时，我得到：

无法连接到服务器：EOF

这是我的kubeadm使用的yaml配置文件：

apiVersion: kubeadm.k8s.io/v1beta1
kind: ClusterConfiguration
kubernetesVersion: stable
apiServer:
  certSANs:
  - "172.40.0.10"
controlPlaneEndpoint: "172.40.0.10:6443"
networking:
  podSubnet: 10.244.0.0/16

172.40.0.10：是一个HAProxy服务器。

任何人都可以帮我调试吗？

Answer 1

使用“法兰绒”pod网络查看要求，请运行：

通过运行sysctl> net.bridge.bridge-nf-call-iptables = 1将/或sys / net / bridge / bridge-nf-call-iptables设置为1，将桥接的IPv4流量传递给iptables的链

你可以找到更多信息here。