如何将 kubeadm init 需要的镜像离线到本地 Harbor

# 获取要拉取的镜像
> [!Info] 环境
> 安装了 `kubeadm` 的机器

生成默认配置
```
kubeadm config print init-defaults >> init.yaml
```

修改默认配置 `vim init.yaml` ：

```yaml
# 替换镜像仓库
#imageRepository: harbor.dtdream.com/k8s
imageRepository: registry.k8s.io

# 指定想安装的版本
kubernetesVersion: 1.26.4
```

获取执行 `kubeadm init` 时需要拉取的镜像，通过 `--config init.yaml` 指定 k8s 版本。

```shell
root@k8s00:/opt/k8s# kubeadm config images list --config init.yaml 
registry.k8s.io/kube-apiserver:v1.26.4  
registry.k8s.io/kube-controller-manager:v1.26.4  
registry.k8s.io/kube-scheduler:v1.26.4  
registry.k8s.io/kube-proxy:v1.26.4  
registry.k8s.io/pause:3.9  
registry.k8s.io/etcd:3.5.6-0  
registry.k8s.io/coredns/coredns:v1.9.3
```

# 拉取镜像并导出离线文件
> [!Info] 环境
> 可访问境外资源的机器

拉取镜像
```bash
docker pull registry.k8s.io/kube-apiserver:v1.26.4  
docker pull registry.k8s.io/kube-controller-manager:v1.26.4  
docker pull registry.k8s.io/kube-scheduler:v1.26.4  
docker pull registry.k8s.io/kube-proxy:v1.26.4  
docker pull registry.k8s.io/pause:3.9  
docker pull registry.k8s.io/etcd:3.5.6-0  
docker pull registry.k8s.io/coredns/coredns:v1.9.3
```

导出离线文件

```shell
docker save registry.k8s.io/kube-apiserver:v1.26.4 > kube-apiserver:v1.26.4.tar  
docker save registry.k8s.io/kube-controller-manager:v1.26.4 > kube-controller-manager:v1.26.4.tar  
docker save registry.k8s.io/kube-scheduler:v1.26.4 > kube-scheduler:v1.26.4.tar  
docker save registry.k8s.io/kube-proxy:v1.26.4 > kube-proxy:v1.26.4.tar  
docker save registry.k8s.io/pause:3.9 > pause:3.9.tar  
docker save registry.k8s.io/etcd:3.5.6-0 > etcd:3.5.6-0.tar  
docker save registry.k8s.io/coredns/coredns:v1.9.3 > coredns:v1.9.3.tar
```

# 下载离线镜像并上传到 Harbor
> [!Info] 环境
> 可登陆 harbor.dtdream.com 的机器

下载离线镜像

```shell
wget down.v-ta.com/k8s/kube-apiserver:v1.26.4.tar  
wget down.v-ta.com/k8s/kube-controller-manager:v1.26.4.tar  
wget down.v-ta.com/k8s/kube-scheduler:v1.26.4.tar  
wget down.v-ta.com/k8s/kube-proxy:v1.26.4.tar  
wget down.v-ta.com/k8s/pause:3.9.tar  
wget down.v-ta.com/k8s/etcd:3.5.6-0.tar  
wget down.v-ta.com/k8s/coredns:v1.9.3.tar
```

加载离线镜像

```shell
docker load < kube-apiserver:v1.26.4.tar  
docker load < kube-controller-manager:v1.26.4.tar  
docker load < kube-scheduler:v1.26.4.tar  
docker load < kube-proxy:v1.26.4.tar  
docker load < pause:3.9.tar  
docker load < etcd:3.5.6-0.tar  
docker load < coredns:v1.9.3.tar
```

修改镜像标签名

```shell
docker tag registry.k8s.io/kube-apiserver:v1.26.4 harbor.dtdream.com/k8s/kube-apiserver:v1.26.4  
docker tag registry.k8s.io/kube-controller-manager:v1.26.4 harbor.dtdream.com/k8s/kube-controller-manager:v1.26.4  
docker tag registry.k8s.io/kube-scheduler:v1.26.4 harbor.dtdream.com/k8s/kube-scheduler:v1.26.4  
docker tag registry.k8s.io/kube-proxy:v1.26.4 harbor.dtdream.com/k8s/kube-proxy:v1.26.4  
docker tag registry.k8s.io/pause:3.9 harbor.dtdream.com/k8s/pause:3.9  
docker tag registry.k8s.io/etcd:3.5.6-0 harbor.dtdream.com/k8s/etcd:3.5.6-0  
docker tag registry.k8s.io/coredns/coredns:v1.9.3 harbor.dtdream.com/k8s/coredns:v1.9.3
```

登陆harbor

```shell
docker login harbor.dtdream.com
```

推送镜像

```shell
docker push harbor.dtdream.com/k8s/kube-apiserver:v1.26.4  
docker push harbor.dtdream.com/k8s/kube-controller-manager:v1.26.4  
docker push harbor.dtdream.com/k8s/kube-scheduler:v1.26.4  
docker push harbor.dtdream.com/k8s/kube-proxy:v1.26.4  
docker push harbor.dtdream.com/k8s/pause:3.9  
docker push harbor.dtdream.com/k8s/etcd:3.5.6-0  
docker push harbor.dtdream.com/k8s/coredns:v1.9.3
```