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| <h1>在 Minikube 中运行 Ozone</h1> |
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| <li>minikube</li> |
| <li>kubectl</li> |
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| <p>ozone 发行包中的 <code>kubernetes/examples</code> 文件夹下包含了多种用途的 kubernetes 部署资源文件，这些资源文件默认使用 Docker Hub 上的 <code>apache/ozone</code> 镜像。</p> |
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| <p>使用 minikube 资源集在 minikube 上进行部署：</p> |
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| <pre><code>cd kubernetes/examples/minikube |
| kubectl apply -f . |
| </code></pre> |
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| <p>使用下面的命令检查结果：</p> |
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| <pre><code>kubectl get pod |
| </code></pre> |
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| <p>注意：kubernetes/exampls/minikube 资源集为 minikube 部署进行了如下优化：</p> |
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| <ul> |
| <li>即使你只有一个主机，也可以运行多个 Datanode（在实际的生产集群中，每个物理主机上通常只运行一个 Datanode）</li> |
| <li>Ozone 通过不同的节点端口提供服务</li> |
| </ul> |
| |
| <h2 id="访问服务">访问服务</h2> |
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| <p>现在你可以访问 Ozone 的各个服务，minikube 资源集为每个 web 端点额外定义了一个 NodePort 服务，NodePort 服务可以通过指定端口从任意节点访问：</p> |
| <div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash">kubectl get svc |
| NAME TYPE CLUSTER-IP EXTERNAL-IP PORT<span style="color:#f92672">(</span>S<span style="color:#f92672">)</span> AGE |
| datanode ClusterIP None <none> <none> 27s |
| kubernetes ClusterIP <span style="color:#ae81ff">10</span>.96.0.1 <none> <span style="color:#ae81ff">443</span>/TCP 118m |
| om ClusterIP None <none> <span style="color:#ae81ff">9874</span>/TCP 27s |
| om-public NodePort <span style="color:#ae81ff">10</span>.108.48.148 <none> <span style="color:#ae81ff">9874</span>:32649/TCP 27s |
| s3g ClusterIP None <none> <span style="color:#ae81ff">9878</span>/TCP 27s |
| s3g-public NodePort <span style="color:#ae81ff">10</span>.97.133.137 <none> <span style="color:#ae81ff">9878</span>:31880/TCP 27s |
| scm ClusterIP None <none> <span style="color:#ae81ff">9876</span>/TCP 27s |
| scm-public NodePort <span style="color:#ae81ff">10</span>.105.231.28 <none> <span style="color:#ae81ff">9876</span>:32171/TCP 27s</code></pre></div> |
| <p>Minikube 为访问任意的 NodePort 服务提供了一个方便的命令：</p> |
| |
| <pre><code>minikube service s3g-public |
| # 此命令会在默认浏览器中打开 default/s3g-public 服务的页面... |
| </code></pre> |
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