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部署文档/KubeSphere/基于KubeKey部署高可用Kubernetes集群.md
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部署文档/KubeSphere/基于KubeKey部署高可用Kubernetes集群.md
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> 本文作者：丁辉
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# 基于KubeKey部署Kubernetes
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| 节点名称 | IP | Kubernetes角色 |
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| :----------------------: | :----------: | :-----------------------: |
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| k8s-master-1,KubeKey管理 | 192.168.1.10 | control-plane,etcd,worker |
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| k8s-master-2 | 192.168.1.20 | control-plane,etcd,worker |
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| k8s-master-3 | 192.168.1.30 | control-plane,etcd,worker |
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## 基础准备
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[官方主页](https://kubesphere.io/zh/)
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### 所有节点执行
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1. 创建用户
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```bash
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useradd -m -s /bin/bash kubekey
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```
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2. 配置用户密码
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> 根据自己的密码修改 "123456"
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```bash
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echo "kubekey:123456" | chpasswd
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```
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3. 配置 kubekey 免密使用 sudo 权限
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```bash
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cat <<EOF | sudo tee /etc/sudoers.d/kubekey
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# User rules for kubekey
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kubekey ALL=(ALL) NOPASSWD: ALL
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EOF
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```
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4. 更改主机名
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- 192.168.1.10
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```bash
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hostnamectl set-hostname k8s-master-1 && bash
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```
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- 192.168.1.20
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```bash
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hostnamectl set-hostname k8s-master-2 && bash
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```
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- 192.168.1.30
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```bash
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hostnamectl set-hostname k8s-master-3 && bash
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```
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5. 编辑 /etc/hosts 文件
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```bash
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vi /etc/hosts
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```
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添加如下内容
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```bash
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192.168.1.10 k8s-master-1
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192.168.1.20 k8s-master-2
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192.168.1.30 k8s-master-3
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```
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6. 安装依赖
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- Centos
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```bash
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yum install conntrack-tools socat -y
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```
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- Ubuntu
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```bash
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apt install conntrack socat -y
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```
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### KubeKey管理节点执行
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1. 切换用户
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```bash
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su - kubekey
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```
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2. 创建密钥
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```bash
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sudo ssh-keygen -t rsa -N "" -f /root/.ssh/id_rsa -q
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```
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3. 配置免密登录
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```bash
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sudo ssh-copy-id kubekey@192.168.1.10
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sudo ssh-copy-id kubekey@192.168.1.20
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sudo ssh-copy-id kubekey@192.168.1.30
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```
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## 开始安装 KubeKey
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[KubeKey-Github-Releases](https://github.com/kubesphere/kubekey/releases)
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### KubeKey管理节点执行
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1. 下载最新版 KubeKey
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> 配置国内加速
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>
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> ```bash
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> export KKZONE=cn
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> ```
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```bash
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curl -sfL https://get-kk.kubesphere.io | sh -
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```
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> 指定版本
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>
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> ```bash
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> curl -sfL https://get-kk.kubesphere.io | VERSION=v3.0.13 sh -
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> ```
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2. 为 `kk` 添加可执行权限
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```bash
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sudo chmod +x kk
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sudo mv kk /usr/local/bin/
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```
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3. 生成配置文件
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```bash
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kk create config -f kubesphere.yaml
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```
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> 安装 Kubesphere 指定参数
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>
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> [Kubesphere-Github-Releases](https://github.com/kubesphere/kubesphere/releases)
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>
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> ```bash
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> --with-kubesphere v3.4.1
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> ```
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修改如下内容
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```yaml
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apiVersion: kubekey.kubesphere.io/v1alpha2
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kind: Cluster
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metadata:
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name: sample
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spec:
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hosts:
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- {name: k8s-master-1, address: 192.168.100.10, internalAddress: 192.168.100.10, user: kubekey, password: "123456"}
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- {name: k8s-master-2, address: 192.168.100.20, internalAddress: 192.168.100.20, user: kubekey, password: "123456"}
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- {name: k8s-master-3, address: 192.168.100.30, internalAddress: 192.168.100.30, user: kubekey, password: "123456"}
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roleGroups:
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etcd:
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- k8s-master-1
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- k8s-master-2
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- k8s-master-3
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control-plane:
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- k8s-master-1
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- k8s-master-2
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- k8s-master-3
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worker:
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- k8s-master-1
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- k8s-master-2
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- k8s-master-3
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controlPlaneEndpoint:
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# 启用内置的 HAProxy 负载均衡器
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internalLoadbalancer: haproxy
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domain: lb.kubesphere.local
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address: ""
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port: 6443
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kubernetes:
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# 指定 Kubernetes 版本, 可使用 kk version --show-supported-k8s 命令查询当前 KubeKey 支持的版本
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version: v1.23.10
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clusterName: cluster.local
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autoRenewCerts: true
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# 指定容器运行时
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containerManager: docker
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etcd:
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type: kubekey
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network:
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plugin: calico
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kubePodsCIDR: 10.233.64.0/18
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kubeServiceCIDR: 10.233.0.0/18
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multusCNI:
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enabled: false
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registry:
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privateRegistry: ""
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namespaceOverride: ""
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registryMirrors: []
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insecureRegistries: []
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addons: []
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```
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## 开始安装 Kubernetes
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```bash
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kk create cluster -f kubesphere.yaml -y
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```
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扩容节点
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```bash
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kk add nodes -f kubesphere.yaml -y
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```
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## 卸载集群
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```bash
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kk delete cluster -f kubesphere.yaml
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```
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