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<a class="td-sidebar-link td-sidebar-link__page active" id="m-kustomizezhguidespluginsexecpluginguidedexample" href="/kustomize/zh/guides/plugins/execpluginguidedexample/">Exec 插件示例</a>
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<a class="td-sidebar-link td-sidebar-link__page " id="m-kustomizezhguidespluginsgoplugincaveats" href="/kustomize/zh/guides/plugins/goplugincaveats/">Go 插件注意事项</a>
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<a class="td-sidebar-link td-sidebar-link__page " id="m-kustomizezhguidespluginsgopluginguidedexample" href="/kustomize/zh/guides/plugins/gopluginguidedexample/">Go 插件示例</a>
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<a href="https://github.com/kubernetes-sigs/kustomize/edit/master/site/content/zh/guides/plugins/execPluginGuidedExample.md" target="_blank"><i class="fa fa-edit fa-fw"></i> 编辑此页</a>
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<a href="https://github.com/kubernetes-sigs/kustomize/issues/new?title=Exec%20%e6%8f%92%e4%bb%b6%e7%a4%ba%e4%be%8b" target="_blank"><i class="fab fa-github fa-fw"></i> 提交文档问题</a>
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<li>
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<ul>
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<li></li>
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</ul>
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</li>
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<li><a href="#创建一个工作空间目录">创建一个工作空间/目录</a></li>
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<li><a href="#编写-kustomization">编写 kustomization</a></li>
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<li><a href="#为插件创建目录">为插件创建目录</a></li>
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<li><a href="#编写插件">编写插件</a></li>
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<li><a href="#安装-kustomize">安装 kustomize</a></li>
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<li><a href="#检查目录结构">检查目录结构</a></li>
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<li><a href="#使用插件构建-app">使用插件构建 APP:</a></li>
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<li class="breadcrumb-item" >
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<a href="https://kubernetes-sigs.github.io/kustomize/zh/guides/">指南</a>
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</li>
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<li class="breadcrumb-item" >
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<a href="https://kubernetes-sigs.github.io/kustomize/zh/guides/plugins/">Kustomize 插件</a>
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<li class="breadcrumb-item active" aria-current="page">
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<a href="https://kubernetes-sigs.github.io/kustomize/zh/guides/plugins/execpluginguidedexample/">Exec 插件示例</a>
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<div class="td-content">
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<h1>Exec 插件示例</h1>
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<div class="lead">60 秒在 Linux 构建一个 Exec 插件</div>
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<p>本教程只是一个快速开始的示例,完整的插件文档请看:<a href="..">kustomize 插件</a></p>
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<p>本示例将使用 bash 编写了一个简单的 <em>exec</em> 插件,用来生成一个 <code>ConfigMap</code>。</p>
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<p>尝试本教程不会破坏你的当前设置。</p>
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<h4 id="环境要求">环境要求</h4>
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<ul>
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<li><code>linux</code></li>
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<li><code>git</code></li>
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<li><code>curl</code></li>
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<li><code>Go 1.13</code></li>
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</ul>
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<h2 id="创建一个工作空间目录">创建一个工作空间/目录</h2>
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<div class="highlight"><pre style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash"><span style="color:#000">DEMO</span><span style="color:#ce5c00;font-weight:bold">=</span><span style="color:#204a87;font-weight:bold">$(</span>mktemp -d<span style="color:#204a87;font-weight:bold">)</span>
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</code></pre></div><h2 id="编写-kustomization">编写 kustomization</h2>
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<p>新建一个目录来保存所有的配置:</p>
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<div class="highlight"><pre style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash"><span style="color:#000">MYAPP</span><span style="color:#ce5c00;font-weight:bold">=</span><span style="color:#000">$DEMO</span>/myapp
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mkdir -p <span style="color:#000">$MYAPP</span>
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</code></pre></div><p>编写一个 Deployment 配置:</p>
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<div class="highlight"><pre style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash">cat <span style="color:#4e9a06"><<'EOF' >$MYAPP/deployment.yaml
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</span><span style="color:#4e9a06">apiVersion: apps/v1
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</span><span style="color:#4e9a06">kind: Deployment
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</span><span style="color:#4e9a06">metadata:
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</span><span style="color:#4e9a06"> name: the-deployment
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</span><span style="color:#4e9a06">spec:
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</span><span style="color:#4e9a06"> replicas: 3
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</span><span style="color:#4e9a06"> template:
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</span><span style="color:#4e9a06"> spec:
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</span><span style="color:#4e9a06"> containers:
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</span><span style="color:#4e9a06"> - name: the-container
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</span><span style="color:#4e9a06"> image: monopole/hello:1
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</span><span style="color:#4e9a06"> command: ["/hello",
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</span><span style="color:#4e9a06"> "--port=8080",
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</span><span style="color:#4e9a06"> "--date=$(THE_DATE)",
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</span><span style="color:#4e9a06"> "--enableRiskyFeature=$(ENABLE_RISKY)"]
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</span><span style="color:#4e9a06"> ports:
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</span><span style="color:#4e9a06"> - containerPort: 8080
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</span><span style="color:#4e9a06"> env:
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</span><span style="color:#4e9a06"> - name: THE_DATE
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</span><span style="color:#4e9a06"> valueFrom:
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</span><span style="color:#4e9a06"> configMapKeyRef:
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</span><span style="color:#4e9a06"> name: the-map
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</span><span style="color:#4e9a06"> key: today
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</span><span style="color:#4e9a06"> - name: ALT_GREETING
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</span><span style="color:#4e9a06"> valueFrom:
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</span><span style="color:#4e9a06"> configMapKeyRef:
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</span><span style="color:#4e9a06"> name: the-map
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</span><span style="color:#4e9a06"> key: altGreeting
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</span><span style="color:#4e9a06"> - name: ENABLE_RISKY
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</span><span style="color:#4e9a06"> valueFrom:
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</span><span style="color:#4e9a06"> configMapKeyRef:
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</span><span style="color:#4e9a06"> name: the-map
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</span><span style="color:#4e9a06"> key: enableRisky
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</span><span style="color:#4e9a06">EOF</span>
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</code></pre></div><p>编写一个 service 配置:</p>
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<div class="highlight"><pre style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash">cat <span style="color:#4e9a06"><<EOF >$MYAPP/service.yaml
|
||
</span><span style="color:#4e9a06">kind: Service
|
||
</span><span style="color:#4e9a06">apiVersion: v1
|
||
</span><span style="color:#4e9a06">metadata:
|
||
</span><span style="color:#4e9a06"> name: the-service
|
||
</span><span style="color:#4e9a06">spec:
|
||
</span><span style="color:#4e9a06"> type: LoadBalancer
|
||
</span><span style="color:#4e9a06"> ports:
|
||
</span><span style="color:#4e9a06"> - protocol: TCP
|
||
</span><span style="color:#4e9a06"> port: 8666
|
||
</span><span style="color:#4e9a06"> targetPort: 8080
|
||
</span><span style="color:#4e9a06">EOF</span>
|
||
</code></pre></div><p>现在为您要编写的插件创建一个配置文件。</p>
|
||
<p>这个配置文件的内容也是 k8s 资源对象。其中 <code>apiVersion</code> 和 <code>kind</code> 字段的值用于在文件系统中查找插件代码(稍后会对此进行更多介绍)。</p>
|
||
<div class="highlight"><pre style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash">cat <span style="color:#4e9a06"><<'EOF' >$MYAPP/cmGenerator.yaml
|
||
</span><span style="color:#4e9a06">apiVersion: myDevOpsTeam
|
||
</span><span style="color:#4e9a06">kind: SillyConfigMapGenerator
|
||
</span><span style="color:#4e9a06">metadata:
|
||
</span><span style="color:#4e9a06"> name: whatever
|
||
</span><span style="color:#4e9a06">argsOneLiner: Bienvenue true
|
||
</span><span style="color:#4e9a06">EOF</span>
|
||
</code></pre></div><p>最后在 kustomization 文件中引用以上所有内容:</p>
|
||
<div class="highlight"><pre style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash">cat <span style="color:#4e9a06"><<EOF >$MYAPP/kustomization.yaml
|
||
</span><span style="color:#4e9a06">commonLabels:
|
||
</span><span style="color:#4e9a06"> app: hello
|
||
</span><span style="color:#4e9a06">resources:
|
||
</span><span style="color:#4e9a06">- deployment.yaml
|
||
</span><span style="color:#4e9a06">- service.yaml
|
||
</span><span style="color:#4e9a06">generators:
|
||
</span><span style="color:#4e9a06">- cmGenerator.yaml
|
||
</span><span style="color:#4e9a06">EOF</span>
|
||
</code></pre></div><p>检查这些文件</p>
|
||
<div class="highlight"><pre style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash">ls -C1 <span style="color:#000">$MYAPP</span>
|
||
</code></pre></div><h2 id="为插件创建目录">为插件创建目录</h2>
|
||
<p>插件必须位于特定的目录,以便 Kustomize 能够找到它们。</p>
|
||
<p>该示例将使用临时目录:</p>
|
||
<div class="highlight"><pre style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash"><span style="color:#000">PLUGIN_ROOT</span><span style="color:#ce5c00;font-weight:bold">=</span><span style="color:#000">$DEMO</span>/kustomize/plugin
|
||
</code></pre></div><p>在上面定义的插件配置 <code>$MYAPP/cmGenerator.yaml</code> 中指定:</p>
|
||
<blockquote>
|
||
<div class="highlight"><pre style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-yaml" data-lang="yaml"><span style="color:#204a87;font-weight:bold">apiVersion</span><span style="color:#000;font-weight:bold">:</span><span style="color:#f8f8f8;text-decoration:underline"> </span>myDevOpsTeam<span style="color:#f8f8f8;text-decoration:underline">
|
||
</span><span style="color:#f8f8f8;text-decoration:underline"></span><span style="color:#204a87;font-weight:bold">kind</span><span style="color:#000;font-weight:bold">:</span><span style="color:#f8f8f8;text-decoration:underline"> </span>SillyConfigMapGenerator<span style="color:#f8f8f8;text-decoration:underline">
|
||
</span></code></pre></div></blockquote>
|
||
<p>这意味着该插件必须位于以下目录中:</p>
|
||
<div class="highlight"><pre style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash"><span style="color:#000">MY_PLUGIN_DIR</span><span style="color:#ce5c00;font-weight:bold">=</span><span style="color:#000">$PLUGIN_ROOT</span>/myDevOpsTeam/sillyconfigmapgenerator
|
||
|
||
mkdir -p <span style="color:#000">$MY_PLUGIN_DIR</span>
|
||
</code></pre></div><p>插件的目录结构为: <code>apiVersion 的 value/小写 kind 的 value</code>。</p>
|
||
<p>插件拥有自己的目录,不但可以保存插件代码,还可以保存测试代码以需要的补充数据文件。</p>
|
||
<h2 id="编写插件">编写插件</h2>
|
||
<p>插件有 <em>exec</em> 和 <em>Go</em> 两种.</p>
|
||
<p>编写一个 <em>exec</em> 插件,将其安装到正确的目录,文件名必须与插件的类型匹配(在本例中为 <code>SillyConfigMapGenerator</code>):</p>
|
||
<div class="highlight"><pre style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash">cat <span style="color:#4e9a06"><<'EOF' >$MY_PLUGIN_DIR/SillyConfigMapGenerator
|
||
</span><span style="color:#4e9a06">#!/bin/bash
|
||
</span><span style="color:#4e9a06"># Skip the config file name argument.
|
||
</span><span style="color:#4e9a06">shift
|
||
</span><span style="color:#4e9a06">today=`date +%F`
|
||
</span><span style="color:#4e9a06">echo "
|
||
</span><span style="color:#4e9a06">kind: ConfigMap
|
||
</span><span style="color:#4e9a06">apiVersion: v1
|
||
</span><span style="color:#4e9a06">metadata:
|
||
</span><span style="color:#4e9a06"> name: the-map
|
||
</span><span style="color:#4e9a06">data:
|
||
</span><span style="color:#4e9a06"> today: $today
|
||
</span><span style="color:#4e9a06"> altGreeting: "$1"
|
||
</span><span style="color:#4e9a06"> enableRisky: "$2"
|
||
</span><span style="color:#4e9a06">"
|
||
</span><span style="color:#4e9a06">EOF</span>
|
||
</code></pre></div><p>根据定义,<em>exec</em> 插件必须是可执行的:</p>
|
||
<div class="highlight"><pre style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash">chmod a+x <span style="color:#000">$MY_PLUGIN_DIR</span>/SillyConfigMapGenerator
|
||
</code></pre></div><h2 id="安装-kustomize">安装 kustomize</h2>
|
||
<p>根据<a href="/kustomize/zh/installation">文档</a>安装 kustomize:</p>
|
||
<div class="highlight"><pre style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash">curl -s <span style="color:#4e9a06">"https://raw.githubusercontent.com/\
|
||
</span><span style="color:#4e9a06">kubernetes-sigs/kustomize/master/hack/install_kustomize.sh"</span> <span style="color:#000;font-weight:bold">|</span> bash
|
||
mkdir -p <span style="color:#000">$DEMO</span>/bin
|
||
mv kustomize <span style="color:#000">$DEMO</span>/bin
|
||
</code></pre></div><h2 id="检查目录结构">检查目录结构</h2>
|
||
<div class="highlight"><pre style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash">tree <span style="color:#000">$DEMO</span>
|
||
</code></pre></div><h2 id="使用插件构建-app">使用插件构建 APP:</h2>
|
||
<div class="highlight"><pre style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-bash" data-lang="bash"><span style="color:#000">XDG_CONFIG_HOME</span><span style="color:#ce5c00;font-weight:bold">=</span><span style="color:#000">$DEMO</span> <span style="color:#000">$DEMO</span>/bin/kustomize build --enable_alpha_plugins <span style="color:#000">$MYAPP</span>
|
||
</code></pre></div><p>之前如果您已经设置了 <code>PLUGIN_ROOT=$HOME/.config/kustomize/plugin</code>,则无需在 <em>kustomize</em> 命令前使用 <code>XDG_CONFIG_HOME</code>。</p>
|
||
|
||
|
||
|
||
<div class="text-muted mt-5 pt-3 border-top">最后修改 2020年06月15日: <a href="https://github.com/kubernetes-sigs/kustomize/commit/518147c129f831913d33226cf17068d0d4270f41">add zh docsy (518147c1)</a>
|
||
</div>
|
||
</div>
|
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</main>
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</div>
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</div>
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<a class="text-white" target="_blank" href="https://github.com/kubernetes-sigs/kustomize">
|
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<i class="fab fa-github"></i>
|
||
</a>
|
||
</li>
|
||
|
||
</ul>
|
||
|
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|
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|
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</div>
|
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<div class="col-12 col-sm-4 text-center py-2 order-sm-2">
|
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<small class="text-white">© 2020 Kubernetes Authors All Rights Reserved</small>
|
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</footer>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
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<script src="/kustomize/js/main.min.35b203b3c2114e187f6e4bbf0903c511aaaac5535186321e3b5e364656b6de0c.js" integrity="sha256-NbIDs8IRThh/bku/CQPFEaqqxVNRhjIeO142Rla23gw=" crossorigin="anonymous"></script>
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<script src="https://kubernetes-sigs.github.io/kustomize//js/asciinema-player.js"></script>
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