- 通过kubeadm安装k8s集群
- 升级目标:原版本1.16.9,升级到1.20.4
- 升级流程:
- 备份kubeadm config kubeadm config view > kubeadm.config
- master节点安装kubelet-1.17.17 kubeadm-1.17.17 kubectl-1.17.17
- 查看升级计划kubeadm upgrade plan
- 开始升级kubeadm upgrade apply v1.17.17
- 节点安装kubelet-1.17.17 kubeadm-1.17.17 kubectl-1.17.17
- 重启所有节点kubelet systemctl daemon-reload systemctl restart kubelet
- 查看版本kubectl get nodes
- 升级1.18.8重复以上流程
- 升级1.20.4重复以上流程