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Kubernetes - vSphere 云提供商

tag-icon • tag-icon kubernetes vmware-vsphere
Kubernetes - vSphere 云提供商

我正在关注这个文档https://cloud-provider-vsphere.sigs.k8s.io/tutorials/kubernetes-on-vsphere-with-kubeadm.html

我正在使用负载均衡器作为我的 ControlPlaneEndpoint，现在我想将一个新的主服务器加入到集群中，同时传递云提供商标志，通过下面的方法可以加入工作服务器，但是我不能对新的主服务器执行相同的操作。

kubectl -n kube-public get configmap cluster-info -o jsonpath='{.data.kubeconfig}' > discovery.yaml

# tee /etc/kubernetes/kubeadminitworker.yaml >/dev/null <<EOF
apiVersion: kubeadm.k8s.io/v1beta1
caCertPath: /etc/kubernetes/pki/ca.crt
discovery:
  file:
    kubeConfigPath: /etc/kubernetes/discovery.yaml
  timeout: 5m0s
  tlsBootstrapToken: y7yaev.9dvwxx6ny4ef8vlq
kind: JoinConfiguration
nodeRegistration:
  criSocket: /var/run/dockershim.sock
  kubeletExtraArgs:
    cloud-provider: external
EOF

第一个控制平面按以下方式创建：

kubeadm init --config kubeadminit.yaml

apiVersion: kubeadm.k8s.io/v1beta2
bootstrapTokens:
- groups:
  - system:bootstrappers:kubeadm:default-node-token
  token: y7yaev.9dvwxx6ny4ef8vlq
  ttl: 0s
  usages:
  - signing
  - authentication
kind: InitConfiguration
localAPIEndpoint:
  advertiseAddress: 10.20.121.22
  bindPort: 6443
nodeRegistration:
  criSocket: /run/containerd/containerd.sock
  kubeletExtraArgs:
    cloud-provider: external
  name: cjblvk8smst1
  taints:
  - effect: NoSchedule
    key: node-role.kubernetes.io/master
---
apiServer:
  timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta2
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controlPlaneEndpoint: kubeproxy:6443
controllerManager: {}
dns:
  type: CoreDNS
etcd:
  local:
    dataDir: /var/lib/etcd
imageRepository: k8s.gcr.io
kind: ClusterConfiguration
kubernetesVersion: v1.20.5
networking:
  dnsDomain: cluster.local
  podSubnet: 10.244.0.0/16
  serviceSubnet: 10.96.0.0/12
scheduler: {}

我尝试按以下方式加入第二个主节点，但是它作为工作节点加入：

kubeadm join --config kubeadminitSecondmaster.yaml

apiVersion: kubeadm.k8s.io/v1beta2
caCertPath: /etc/kubernetes/pki/ca.crt
discovery:
  file:
    kubeConfigPath: /etc/kubernetes/discovery.yaml
  timeout: 5m0s
  tlsBootstrapToken: y7yaev.9dvwxx6ny4ef8vlq
kind: JoinConfiguration
nodeRegistration:
  criSocket: /run/containerd/containerd.sock
  kubeletExtraArgs:
    cloud-provider: external
  name: kubemst2
  taints:
 - effect: NoSchedule
    key: node-role.kubernetes.io/master
---
apiServer:
  timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta2
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controlPlaneEndpoint: kubesproxy:6443
controllerManager: {}
dns:
  type: CoreDNS
etcd:
  local:
    dataDir: /var/lib/etcd
imageRepository: k8s.gcr.io
kind: ClusterConfiguration
kubernetesVersion: v1.20.5
networking:
  dnsDomain: cluster.local
  podSubnet: 10.244.0.0/16
  serviceSubnet: 10.96.0.0/12
scheduler: {}

集群信息：

  • Kubernetes 版本：1.20.5
  • 正在使用的云：裸机 - vSphere
  • 安装方法：Kubeadm
  • 主机操作系统：Centos 7.9
  • CNI 和版本：Weave 0.3.0
  • CRI 和版本：Containerd 1.4.4

谢谢

答案1

您的kubeadm join命令缺少--control-plane范围。

kubeadm join --control-plane --config kubeadminitSecondmaster.yaml

如果没有该参数，节点将成为工作者。

答案2

我的一个问题通过以下方式更新集群得到解决：

kubeadm upgrade apply --config kubeadm-config.yaml --ignore-preflight-errors all --upload-certs --force --v=5

文件：

apiServer:
  extraArgs:
    cloud-config: /etc/kubernetes/vsphere.conf
    cloud-provider: vsphere
    authorization-mode: Node,RBAC
  extraVolumes:
  - hostPath: /etc/kubernetes/vsphere.conf
    mountPath: /etc/kubernetes/vsphere.conf
    name: cloud
  timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta2
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controlPlaneEndpoint: k8s-proxy:6443
controllerManager:
  extraArgs:
    cloud-config: /etc/kubernetes/vsphere.conf
    cloud-provider: vsphere
  extraVolumes:
  - hostPath: /etc/kubernetes/vsphere.conf
    mountPath: /etc/kubernetes/vsphere.conf
    name: cloud
dns:
  type: CoreDNS
etcd:
  local:
    dataDir: /var/lib/etcd
imageRepository: k8s.gcr.io
kind: ClusterConfiguration
kubernetesVersion: v1.20.6
networking:
  dnsDomain: cluster.local
  serviceSubnet: 10.96.0.0/12
scheduler: {}

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