105 lines
2.6 KiB
Markdown
105 lines
2.6 KiB
Markdown
# k3s 国内离线安装方法
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## 步骤
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### 下载离线文件
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进入 [k3s release](https://github.com/k3s-io/k3s/releases) 页面，下载 k3s 二进制和依赖镜像的压缩包:
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* `k3s`: 二进制。
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* `k3s-airgap-images-amd64.tar`: 镜像压缩包。
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下载安装脚本:
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```bash
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curl -o install.sh https://get.k3s.io
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```
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下载完将所有文件放入需要安装 k3s 的机器上。
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### 安装依赖镜像
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```bash
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sudo mkdir -p /var/lib/rancher/k3s/agent/images/
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sudo cp ./k3s-airgap-images-amd64.tar /var/lib/rancher/k3s/agent/images/
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```
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### 安装 k3s 二进制
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```bash
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chmod +x k3s
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cp k3s /usr/local/bin/
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```
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### 执行安装脚本
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```bash
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chmod +x install.sh
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INSTALL_K3S_SKIP_DOWNLOAD=true ./install.sh
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```
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### 验证
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查看 k3s 运行状态:
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```bash
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systemctl status k3s
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```
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查看 k3s 日志:
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```bash
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journalctl -u k3s -f
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```
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查看 k3s 集群状态:
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```bash
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$ k3s kubectl get node
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NAME STATUS ROLES AGE VERSION
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vm-55-160-centos Ready control-plane,master 3m22s v1.25.2+k3s1
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$ k3s kubectl get pod -A
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NAMESPACE NAME READY STATUS RESTARTS AGE
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kube-system local-path-provisioner-5b5579c644-6h99x 1/1 Running 0 3m22s
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kube-system coredns-75fc8f8fff-sjjzs 1/1 Running 0 3m22s
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kube-system helm-install-traefik-crd-mgffn 0/1 Completed 0 3m22s
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kube-system metrics-server-74474969b-6bj6r 1/1 Running 0 3m22s
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kube-system svclb-traefik-0ab06643-6vj96 2/2 Running 0 3m1s
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kube-system helm-install-traefik-m7wdm 0/1 Completed 2 3m22s
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kube-system traefik-7d647b7597-dw6b4 1/1 Running 0 3m1s
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```
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### 获取 kubeconfig
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若希望在本机之外用 kubectl 操作集群，可以将 kubeconfig 导出来:
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```bash
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k3s kubectl config view --raw > k3s
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```
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修改其中 server 地址的 IP 为本机 IP，将 kubeconfig 文件放到 kubectl 所在机器上，然后用 [kubecm](https://github.com/sunny0826/kubecm) 合并到本地 kubeconfig:
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```bash
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kubecm add --context-name=k3s -cf k3s
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```
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使用 [kubectx](https://github.com/ahmetb/kubectx) 切换 context:
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```bash
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$ kubectl ctx k3s
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Switched to context "k3s".
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```
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使用 kubectl 操作 k3s 集群:
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```bash
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$ kubectl get node
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NAME STATUS ROLES AGE VERSION
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vm-55-160-centos Ready control-plane,master 14m v1.25.2+k3s1
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```
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## 参考资料
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* [k3s 离线安装官方文档](https://docs.k3s.io/zh/installation/airgap)
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