如何将Kubernetes主节点从一台服务器移动到另一台服务器?

本文介绍了如何将Kubernetes主节点从一台服务器移动到另一台服务器?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有两个节点的Kubernetes集群.一个人的角色是主人.

I have Kubernetes cluster with two nodes. One's role is Master.

我想将主节点移动到另一台物理服务器.

I want to move master node to another physical server.

我看到的可能方法是添加另一个节点并将其角色更改为主节点.

The possible way I see is to add another node and change its role to master.

我该怎么做?有什么指示吗? 这是唯一的方法吗?

How can I do that? Is there any kind of instructions? Is this the only way?

推荐答案

可能是迁移的副本Kubernetes Master

实际上，您只需要

• 从磁盘克隆数据
• 更改新服务器的身份(IP地址/DNS名称)

更新

如果要在kubeadm配置中更改主IP地址，请检查以下参考:

If you want to change master IP address in kubeadm config, check following references:

• 替换/etc/kubernetes中所有配置文件中的IP地址
• 备份/etc/kubernetes/pki
• 识别/etc/kubernetes/pki中具有旧IP地址作为替代名称的证书
• 同时删除它们的证书和密钥(对我来说，这只是apiserver和etcd/peer)
• 使用kubeadm alpha阶段证书重新生成证书 2
• 在引用旧IP的kube-system命名空间中标识configmap
• 手动编辑这些配置映射 重新启动kubelet和docker(强制重新创建所有容器)

• replacing the IP address in all config files in /etc/kubernetes
• backing up /etc/kubernetes/pki
• identifying certs in /etc/kubernetes/pki that have the old IP address as an alt name
• deleting both the cert and key for each of them (for me it was just apiserver and etcd/peer)
• regenerating the certs using kubeadm alpha phase certs2
• identifying configmap in the kube-system namespace that referenced the old IP
• manually editing those configmaps restarting kubelet and docker (to force all containers to be recreated)

或者逐步查看说明