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当游戏遇见K8S-滚服业务如何用Helm管理
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<p>对分区分服滚服业务Helm如何管理，需要不同小区对应一个value？或是不同小区对应一个templates的yaml小区模板? 那样太复杂了！<br>另外对某些小区yaml个性化的编排配置如何管理呢？我告诉你答案！欢迎大家一起交流。</p>
</blockquote>
<h1 id="1-项目背景"><a href="#1-项目背景" class="headerlink" title="1.项目背景"></a>1.项目背景</h1><p>目前容器化业务多为全区全服业务，管理上多为一个集群一套环境，从头部署完成后，不需要考虑区服复用deployment/statefulset等，大多一对一的场景（一个deployment/statefulset，对应一个模块或用应用），配置文件也可以部署时，确定好后，后期变更较少。然而，滚服业务存在着大量复用deployment/statefulset/configmap/service/ingress等等控制器yaml模版，实现的方式也有多种，这里具体说下一个chart对应一个value管理多区服业务。</p>
<a id="more"></a>
<h1 id="2-Helm"><a href="#2-Helm" class="headerlink" title="2.Helm"></a>2.Helm</h1><h2 id="2-1-Helm介绍"><a href="#2-1-Helm介绍" class="headerlink" title="2.1 Helm介绍"></a>2.1 Helm介绍</h2><p>Helm是一个Kubernetes的包管理工具，就像Linux下的包管理器，如yum/apt等，可以很方便的将之前打包好的yaml文件部署到kubernetes上。</p>
<p>Helm有3个重要概念：</p>
<ul>
<li><strong>helm：</strong>一个命令行客户端工具，主要用于Kubernetes应用chart的创建、打包、发布和管理。</li>
<li><strong>Chart：</strong>应用描述，一系列用于描述 k8s 资源相关文件的集合。</li>
<li><strong>Release：</strong>基于Chart的部署实体，一个 chart 被 Helm 运行后将会生成对应的一个 release；将在k8s中创建出真实运行的资源对象。</li>
</ul>
<h2 id="2-2-Helm安装"><a href="#2-2-Helm安装" class="headerlink" title="2.2 Helm安装"></a>2.2 Helm安装</h2><p>使用helm很简单，你只需要下载一个二进制客户端包即可，会通过kubeconfig配置（通常$HOME/.kube/config）来连接Kubernetes。</p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">wget https://get.helm.sh/helm-v3.7.2-linux-amd64.tar.gz</span><br><span class="line"></span><br><span class="line">tar zxvf helm-v3.7.2-linux-amd64.tar.gz</span><br><span class="line"></span><br><span class="line">mv linux-amd64/helm /usr/bin/</span><br></pre></td></tr></table></figure>
<h1 id="3-制作一个Chart"><a href="#3-制作一个Chart" class="headerlink" title="3.制作一个Chart"></a>3.制作一个Chart</h1><p>Helm核心是模板，即模板化K8s YAML文件。部署多个应用时，将需要改动的字段进行模板化，可动态传入。</p>
<p>下面我们开始制作第一个Chart模拟创建多个区服，镜像使用nginx代替。</p>
<p>首先是value变量的配置（这里只放最基础的也是最常用的变量，如果需要自定义变量最好是通过配置文件挂载卷的方式挂载）</p>
<figure class="highlight yaml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment"># values.yaml</span></span><br><span class="line"><span class="comment"># 测试用例</span></span><br><span class="line"><span class="attr">yqcr:</span> <span class="comment">#项目名</span></span><br><span class="line"> <span class="attr">serverinfo:</span> <span class="comment"># 区服信息（这里只做游戏逻辑服最简单的示例，实际业务这一层还有其他全局模块等，可以灵活规划）</span></span><br><span class="line"> <span class="attr">10001:</span> <span class="comment"># 区服id</span></span><br><span class="line"> <span class="attr">cpu:</span> <span class="number">1</span></span><br><span class="line"> <span class="attr">mem:</span> <span class="string">1Gi</span></span><br><span class="line"> <span class="attr">images1:</span> <span class="string">nginx</span></span><br><span class="line"> <span class="attr">tag1:</span> <span class="number">1.21</span><span class="number">.4</span></span><br><span class="line"> <span class="attr">replicas:</span> <span class="number">2</span></span><br><span class="line"> <span class="attr">10002:</span></span><br><span class="line"> <span class="attr">cpu:</span> <span class="number">2</span></span><br><span class="line"> <span class="attr">mem:</span> <span class="string">2Gi</span></span><br><span class="line"> <span class="attr">images1:</span> <span class="string">nginx</span></span><br><span class="line"> <span class="attr">tag1:</span> <span class="number">1.20</span><span class="number">.2</span></span><br><span class="line"> <span class="attr">replicas:</span> <span class="number">1</span></span><br><span class="line"> <span class="attr">10003:</span></span><br><span class="line"> <span class="attr">cpu:</span> <span class="number">2</span></span><br><span class="line"> <span class="attr">mem:</span> <span class="string">2Gi</span></span><br><span class="line"> <span class="attr">10004:</span></span><br><span class="line"> <span class="attr">cpu:</span> <span class="number">2</span></span><br><span class="line"> <span class="attr">10005:</span></span><br><span class="line"> <span class="attr">images1:</span> <span class="string">nginx</span></span><br><span class="line"> <span class="attr">tag1:</span> <span class="number">1.20</span><span class="number">.2</span></span><br><span class="line"> <span class="attr">replicas:</span> <span class="number">1</span></span><br><span class="line"><span class="comment"># 默认配置信息（可以减少value行数，更加清晰，当使用默认配置时，只需要10001:即可）</span></span><br><span class="line"><span class="attr">Gamedefault:</span></span><br><span class="line"> <span class="attr">cpu:</span> <span class="number">1</span></span><br><span class="line"> <span class="attr">mem:</span> <span class="string">1Gi</span></span><br><span class="line"> <span class="attr">images1:</span> <span class="string">nginx</span></span><br><span class="line"> <span class="attr">tag1:</span> <span class="number">1.20</span><span class="number">.2</span></span><br><span class="line"> <span class="attr">replicas:</span> <span class="number">2</span></span><br></pre></td></tr></table></figure>
<p>template实例:</p>
<figure class="highlight yaml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br><span class="line">107</span><br><span class="line">108</span><br><span class="line">109</span><br><span class="line">110</span><br><span class="line">111</span><br><span class="line">112</span><br><span class="line">113</span><br><span class="line">114</span><br><span class="line">115</span><br><span class="line">116</span><br><span class="line">117</span><br><span class="line">118</span><br><span class="line">119</span><br><span class="line">120</span><br><span class="line">121</span><br><span class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span class="line">126</span><br><span class="line">127</span><br><span class="line">128</span><br><span class="line">129</span><br><span class="line">130</span><br><span class="line">131</span><br><span class="line">132</span><br><span class="line">133</span><br><span class="line">134</span><br><span class="line">135</span><br><span class="line">136</span><br><span class="line">137</span><br><span class="line">138</span><br><span class="line">139</span><br><span class="line">140</span><br><span class="line">141</span><br><span class="line">142</span><br><span class="line">143</span><br><span class="line">144</span><br><span class="line">145</span><br><span class="line">146</span><br><span class="line">147</span><br><span class="line">148</span><br><span class="line">149</span><br><span class="line">150</span><br><span class="line">151</span><br><span class="line">152</span><br><span class="line">153</span><br><span class="line">154</span><br><span class="line">155</span><br><span class="line">156</span><br><span class="line">157</span><br><span class="line">158</span><br><span class="line">159</span><br><span class="line">160</span><br><span class="line">161</span><br><span class="line">162</span><br><span class="line">163</span><br><span class="line">164</span><br><span class="line">165</span><br><span class="line">166</span><br><span class="line">167</span><br><span class="line">168</span><br><span class="line">169</span><br><span class="line">170</span><br><span class="line">171</span><br><span class="line">172</span><br><span class="line">173</span><br><span class="line">174</span><br><span class="line">175</span><br><span class="line">176</span><br><span class="line">177</span><br><span class="line">178</span><br><span class="line">179</span><br><span class="line">180</span><br><span class="line">181</span><br><span class="line">182</span><br><span class="line">183</span><br><span class="line">184</span><br><span class="line">185</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment"># 默认值定义</span></span><br><span class="line">{{ <span class="string">$default_res</span> <span class="string">:=</span> <span class="string">.Values.Gamedefault.replicas</span> }}</span><br><span class="line">{{ <span class="string">$default_cpu</span> <span class="string">:=</span> <span class="string">.Values.Gamedefault.cpu</span> }}</span><br><span class="line">{{ <span class="string">$default_mem</span> <span class="string">:=</span> <span class="string">.Values.Gamedefault.mem</span> }}</span><br><span class="line">{{ <span class="string">$default_images1</span> <span class="string">:=</span> <span class="string">.Values.Gamedefault.images1</span> }}</span><br><span class="line">{{ <span class="string">$default_tag1</span> <span class="string">:=</span> <span class="string">.Values.Gamedefault.tag1</span> }}</span><br><span class="line"><span class="comment"># 遍历区服map</span></span><br><span class="line">{{<span class="bullet">-</span> <span class="string">range</span> <span class="string">$key</span>, <span class="string">$value</span> <span class="string">:=</span> <span class="string">.Values.yqcr.serverinfo</span> }}</span><br><span class="line"><span class="comment"># 如果区服使用特殊配置</span></span><br><span class="line">{{<span class="bullet">-</span> <span class="string">if</span> <span class="string">$value</span> }}</span><br><span class="line"><span class="attr">apiVersion:</span> <span class="string">apps/v1</span></span><br><span class="line"><span class="attr">kind:</span> <span class="string">Deployment</span></span><br><span class="line"><span class="attr">metadata:</span></span><br><span class="line"> <span class="attr">labels:</span> </span><br><span class="line"> <span class="attr">k8s-app:</span> <span class="string">chatservice-chat-{{</span> <span class="string">$key</span> <span class="string">}}</span></span><br><span class="line"> <span class="attr">name:</span> <span class="string">chatservice-chat-{{</span> <span class="string">$key</span> <span class="string">}}</span></span><br><span class="line"> <span class="attr">namespace:</span> <span class="string">jhxjy-tiyan</span></span><br><span class="line"><span class="attr">spec:</span></span><br><span class="line"> <span class="attr">progressDeadlineSeconds:</span> <span class="number">600</span> <span class="comment"># deploy升级的最大时间</span></span><br><span class="line"> <span class="comment"># 进一步判断是否有这个key，如果有则使用</span></span><br><span class="line"> {{<span class="bullet">-</span> <span class="string">if</span> <span class="string">hasKey</span> <span class="string">$value</span> <span class="string">"replicas"</span> }} </span><br><span class="line"> <span class="attr">replicas:</span> {{ <span class="string">$value.replicas</span> }}</span><br><span class="line"> <span class="comment"># 没有这个key，则使用默认值</span></span><br><span class="line"> {{<span class="bullet">-</span> <span class="string">else</span> }}</span><br><span class="line"> <span class="attr">replicas:</span> {{ <span class="string">$default_res</span> }}</span><br><span class="line"> {{<span class="bullet">-</span> <span class="string">end</span> }}</span><br><span class="line"> <span class="attr">revisionHistoryLimit:</span> <span class="number">10</span></span><br><span class="line"> <span class="attr">selector:</span></span><br><span class="line"> <span class="attr">matchLabels:</span> </span><br><span class="line"> <span class="attr">k8s-app:</span> <span class="string">chatservice-chat-{{</span> <span class="string">$key</span> <span class="string">}}</span></span><br><span class="line"> <span class="attr">strategy:</span></span><br><span class="line"> <span class="attr">rollingUpdate:</span> {<span class="attr">maxSurge:</span> <span class="number">25</span><span class="string">%</span>, <span class="attr">maxUnavailable:</span> <span class="number">25</span><span class="string">%</span>}</span><br><span class="line"> <span class="attr">type:</span> <span class="string">RollingUpdate</span></span><br><span class="line"> <span class="attr">template:</span></span><br><span class="line"> <span class="attr">metadata:</span></span><br><span class="line"> <span class="attr">labels:</span> </span><br><span class="line"> <span class="attr">k8s-app:</span> <span class="string">chatservice-chat-{{</span> <span class="string">$key</span> <span class="string">}}</span></span><br><span class="line"> <span class="attr">spec:</span></span><br><span class="line"> <span class="attr">containers:</span></span><br><span class="line"> <span class="comment"># 模拟某些程序启动时需要注入serverid或者类似的变量</span></span><br><span class="line"> <span class="bullet">-</span> <span class="attr">args:</span> [<span class="string">"bash"</span>,<span class="string">"-c"</span>,<span class="string">"echo <span class="template-variable">{{ $key }}</span> && sleep 600000"</span> ]</span><br><span class="line"> <span class="attr">env:</span></span><br><span class="line"> <span class="bullet">-</span> {<span class="attr">name:</span> <span class="string">EXP_DATA_DOMAIN</span>, <span class="attr">value:</span> <span class="string">xxx</span>}</span><br><span class="line"> {{<span class="bullet">-</span> <span class="string">if</span> <span class="string">and</span> <span class="string">(hasKey</span> <span class="string">$value</span> <span class="string">"images1"</span><span class="string">)</span> <span class="string">(hasKey</span> <span class="string">$value</span> <span class="string">"tag1"</span><span class="string">)</span> }}</span><br><span class="line"> <span class="attr">image:</span> <span class="string">'<span class="template-variable">{{ $value.images1 }}</span>:<span class="template-variable">{{ $value.tag1 }}</span>'</span></span><br><span class="line"> {{<span class="bullet">-</span> <span class="string">else</span> }}</span><br><span class="line"> <span class="attr">image:</span> <span class="string">'<span class="template-variable">{{ $default_images1 }}</span>:<span class="template-variable">{{ $default_tag1 }}</span>'</span></span><br><span class="line"> {{<span class="bullet">-</span> <span class="string">end</span> }}</span><br><span class="line"> <span class="attr">imagePullPolicy:</span> <span class="string">Always</span></span><br><span class="line"> <span class="attr">name:</span> <span class="string">chatservice-chat-{{</span> <span class="string">$key</span> <span class="string">}}</span></span><br><span class="line"> <span class="attr">ports:</span></span><br><span class="line"> <span class="bullet">-</span> <span class="attr">containerPort:</span> <span class="number">80</span></span><br><span class="line"> <span class="attr">protocol:</span> <span class="string">TCP</span></span><br><span class="line"> <span class="comment"># 如果一个container有多个对外的端口可以通过计算来得出，只是示例用法，具体其实这一层的端口完全可以固定，在ingress那里需要通过serverid来动态计算</span></span><br><span class="line"> <span class="bullet">-</span> <span class="attr">containerPort:</span> {{ <span class="string">add</span> <span class="number">2</span> <span class="string">(mul</span> <span class="string">$key</span> <span class="number">2</span><span class="string">)</span> }}</span><br><span class="line"> <span class="attr">protocol:</span> <span class="string">TCP</span></span><br><span class="line"> <span class="attr">resources:</span></span><br><span class="line"> <span class="attr">limits:</span></span><br><span class="line"> {{<span class="bullet">-</span> <span class="string">if</span> <span class="string">hasKey</span> <span class="string">$value</span> <span class="string">"cpu"</span> }}</span><br><span class="line"> <span class="attr">cpu:</span> {{ <span class="string">$value.cpu</span> <span class="string">|</span> <span class="string">quote</span> }}</span><br><span class="line"> {{<span class="bullet">-</span> <span class="string">else</span> }}</span><br><span class="line"> <span class="attr">cpu:</span> {{ <span class="string">$default_cpu</span> <span class="string">|</span> <span class="string">quote</span> }}</span><br><span class="line"> {{<span class="bullet">-</span> <span class="string">end</span> }}</span><br><span class="line"> {{<span class="bullet">-</span> <span class="string">if</span> <span class="string">hasKey</span> <span class="string">$value</span> <span class="string">"mem"</span> }}</span><br><span class="line"> <span class="attr">memory:</span> {{ <span class="string">$value.mem</span> }}<span class="string">}</span></span><br><span class="line"> {{<span class="bullet">-</span> <span class="string">else</span> }}</span><br><span class="line"> <span class="attr">memory:</span> {{ <span class="string">$default_mem</span> }}</span><br><span class="line"> {{<span class="bullet">-</span> <span class="string">end</span> }}</span><br><span class="line"> <span class="attr">requests:</span></span><br><span class="line"> {{<span class="bullet">-</span> <span class="string">if</span> <span class="string">hasKey</span> <span class="string">$value</span> <span class="string">"cpu"</span> }}</span><br><span class="line"> <span class="attr">cpu:</span> {{ <span class="string">$value.cpu</span> <span class="string">|</span> <span class="string">quote</span> }}</span><br><span class="line"> {{<span class="bullet">-</span> <span class="string">else</span> }}</span><br><span class="line"> <span class="attr">cpu:</span> {{ <span class="string">$default_cpu</span> <span class="string">|</span> <span class="string">quote</span> }}</span><br><span class="line"> {{<span class="bullet">-</span> <span class="string">end</span> }}</span><br><span class="line"> {{<span class="bullet">-</span> <span class="string">if</span> <span class="string">hasKey</span> <span class="string">$value</span> <span class="string">"mem"</span> }}</span><br><span class="line"> <span class="attr">memory:</span> {{ <span class="string">$value.mem</span> }}<span class="string">}</span></span><br><span class="line"> {{<span class="bullet">-</span> <span class="string">else</span> }}</span><br><span class="line"> <span class="attr">memory:</span> {{ <span class="string">$default_mem</span> }}</span><br><span class="line"> {{<span class="bullet">-</span> <span class="string">end</span> }}</span><br><span class="line"> <span class="attr">securityContext:</span> {<span class="attr">privileged:</span> <span class="literal">false</span>}</span><br><span class="line"> <span class="attr">terminationMessagePath:</span> <span class="string">/dev/termination-log</span></span><br><span class="line"> <span class="attr">terminationMessagePolicy:</span> <span class="string">File</span></span><br><span class="line"> <span class="attr">volumeMounts:</span></span><br><span class="line"> <span class="bullet">-</span> {<span class="attr">mountPath:</span> <span class="string">/data/config</span>, <span class="attr">name:</span> <span class="string">config</span>}</span><br><span class="line"> <span class="attr">dnsPolicy:</span> <span class="string">ClusterFirst</span></span><br><span class="line"> <span class="attr">restartPolicy:</span> <span class="string">Always</span></span><br><span class="line"> <span class="attr">schedulerName:</span> <span class="string">default-scheduler</span></span><br><span class="line"> <span class="attr">securityContext:</span> {}</span><br><span class="line"> <span class="attr">terminationGracePeriodSeconds:</span> <span class="number">30</span></span><br><span class="line"> <span class="attr">volumes:</span></span><br><span class="line"> <span class="comment"># 配置精准挂载（如：10001/game/gameserver）</span></span><br><span class="line"> <span class="bullet">-</span> <span class="attr">hostPath:</span> {<span class="attr">path:</span> <span class="string">"/data/config/<span class="template-variable">{{ $key }}</span>/chatservice-chat"</span>, <span class="attr">type:</span> <span class="string">''</span>}</span><br><span class="line"> <span class="attr">name:</span> <span class="string">config</span></span><br><span class="line"><span class="meta">---</span></span><br><span class="line"><span class="attr">apiVersion:</span> <span class="string">v1</span></span><br><span class="line"><span class="attr">kind:</span> <span class="string">Service</span></span><br><span class="line"><span class="attr">metadata:</span></span><br><span class="line"> <span class="attr">name:</span> <span class="string">chatservice-chat-{{</span> <span class="string">$key</span> <span class="string">}}</span></span><br><span class="line"> <span class="attr">namespace:</span> <span class="string">jhxjy-tiyan</span></span><br><span class="line"><span class="attr">spec:</span></span><br><span class="line"> <span class="attr">ports:</span></span><br><span class="line"> <span class="bullet">-</span> <span class="attr">name:</span> <span class="string">"80"</span></span><br><span class="line"> <span class="attr">port:</span> {{ <span class="string">$key</span> }}</span><br><span class="line"> <span class="attr">protocol:</span> <span class="string">TCP</span></span><br><span class="line"> <span class="attr">targetPort:</span> <span class="number">80</span></span><br><span class="line"> <span class="attr">selector:</span></span><br><span class="line"> <span class="attr">k8s-app:</span> <span class="string">chatservice-chat-{{</span> <span class="string">$key</span> <span class="string">}}</span></span><br><span class="line"> <span class="attr">sessionAffinity:</span> <span class="string">None</span></span><br><span class="line"> <span class="attr">type:</span> <span class="string">ClusterIP</span></span><br><span class="line"><span class="meta">---</span></span><br><span class="line"><span class="comment"># 如果使用默认配置</span></span><br><span class="line">{{<span class="bullet">-</span> <span class="string">else</span> }}</span><br><span class="line"><span class="attr">apiVersion:</span> <span class="string">apps/v1</span></span><br><span class="line"><span class="attr">kind:</span> <span class="string">Deployment</span></span><br><span class="line"><span class="attr">metadata:</span></span><br><span class="line"> <span class="attr">labels:</span> </span><br><span class="line"> <span class="attr">k8s-app:</span> <span class="string">chatservice-chat-{{</span> <span class="string">$key</span> <span class="string">}}</span></span><br><span class="line"> <span class="attr">name:</span> <span class="string">chatservice-chat-{{</span> <span class="string">$key</span> <span class="string">}}</span></span><br><span class="line"> <span class="attr">namespace:</span> <span class="string">jhxjy-tiyan</span></span><br><span class="line"><span class="attr">spec:</span></span><br><span class="line"> <span class="attr">progressDeadlineSeconds:</span> <span class="number">600</span></span><br><span class="line"> <span class="attr">replicas:</span> {{ <span class="string">$default_res</span> }}</span><br><span class="line"> <span class="attr">revisionHistoryLimit:</span> <span class="number">10</span></span><br><span class="line"> <span class="attr">selector:</span></span><br><span class="line"> <span class="attr">matchLabels:</span> </span><br><span class="line"> <span class="attr">k8s-app:</span> <span class="string">chatservice-chat-{{</span> <span class="string">$key</span> <span class="string">}}</span></span><br><span class="line"> <span class="attr">strategy:</span></span><br><span class="line"> <span class="attr">rollingUpdate:</span> {<span class="attr">maxSurge:</span> <span class="number">25</span><span class="string">%</span>, <span class="attr">maxUnavailable:</span> <span class="number">25</span><span class="string">%</span>}</span><br><span class="line"> <span class="attr">type:</span> <span class="string">RollingUpdate</span></span><br><span class="line"> <span class="attr">template:</span></span><br><span class="line"> <span class="attr">metadata:</span></span><br><span class="line"> <span class="attr">labels:</span> </span><br><span class="line"> <span class="attr">k8s-app:</span> <span class="string">chatservice-chat-{{</span> <span class="string">$key</span> <span class="string">}}</span></span><br><span class="line"> <span class="attr">spec:</span></span><br><span class="line"> <span class="attr">containers:</span></span><br><span class="line"> <span class="bullet">-</span> <span class="attr">args:</span> [<span class="string">"bash"</span>,<span class="string">"-c"</span>,<span class="string">"echo <span class="template-variable">{{ $key }}</span> && sleep 600000"</span> ]</span><br><span class="line"> <span class="attr">env:</span></span><br><span class="line"> <span class="bullet">-</span> {<span class="attr">name:</span> <span class="string">EXP_DATA_DOMAIN</span>, <span class="attr">value:</span> <span class="string">xxx</span>}</span><br><span class="line"> <span class="attr">image:</span> <span class="string">'<span class="template-variable">{{ $default_images1 }}</span>:<span class="template-variable">{{ $default_tag1 }}</span>'</span></span><br><span class="line"> <span class="attr">imagePullPolicy:</span> <span class="string">Always</span></span><br><span class="line"> <span class="attr">name:</span> <span class="string">chatservice-chat-{{</span> <span class="string">$key</span> <span class="string">}}</span></span><br><span class="line"> <span class="attr">ports:</span></span><br><span class="line"> <span class="bullet">-</span> <span class="attr">containerPort:</span> <span class="number">80</span></span><br><span class="line"> <span class="attr">protocol:</span> <span class="string">TCP</span></span><br><span class="line"> <span class="attr">resources:</span></span><br><span class="line"> <span class="attr">limits:</span> </span><br><span class="line"> <span class="attr">cpu:</span> {{ <span class="string">$default_cpu</span> <span class="string">|</span> <span class="string">quote</span> }}</span><br><span class="line"> <span class="attr">memory:</span> {{ <span class="string">$default_mem</span> }}</span><br><span class="line"> <span class="attr">requests:</span> </span><br><span class="line"> <span class="attr">cpu:</span> {{ <span class="string">$default_cpu</span> <span class="string">|</span> <span class="string">quote</span> }}</span><br><span class="line"> <span class="attr">memory:</span> {{ <span class="string">$default_mem</span> }}</span><br><span class="line"> <span class="attr">securityContext:</span> {<span class="attr">privileged:</span> <span class="literal">false</span>}</span><br><span class="line"> <span class="attr">terminationMessagePath:</span> <span class="string">/dev/termination-log</span></span><br><span class="line"> <span class="attr">terminationMessagePolicy:</span> <span class="string">File</span></span><br><span class="line"> <span class="attr">volumeMounts:</span></span><br><span class="line"> <span class="bullet">-</span> {<span class="attr">mountPath:</span> <span class="string">/data/config</span>, <span class="attr">name:</span> <span class="string">config</span>}</span><br><span class="line"> <span class="attr">dnsPolicy:</span> <span class="string">ClusterFirst</span></span><br><span class="line"> <span class="attr">restartPolicy:</span> <span class="string">Always</span></span><br><span class="line"> <span class="attr">schedulerName:</span> <span class="string">default-scheduler</span></span><br><span class="line"> <span class="attr">securityContext:</span> {}</span><br><span class="line"> <span class="attr">terminationGracePeriodSeconds:</span> <span class="number">30</span></span><br><span class="line"> <span class="attr">volumes:</span></span><br><span class="line"> <span class="bullet">-</span> <span class="attr">hostPath:</span> {<span class="attr">path:</span> <span class="string">"/data/config/<span class="template-variable">{{ $key }}</span>/chatservice-chat"</span>, <span class="attr">type:</span> <span class="string">''</span>}</span><br><span class="line"> <span class="attr">name:</span> <span class="string">config</span></span><br><span class="line"><span class="meta">---</span></span><br><span class="line"><span class="attr">apiVersion:</span> <span class="string">v1</span></span><br><span class="line"><span class="attr">kind:</span> <span class="string">Service</span></span><br><span class="line"><span class="attr">metadata:</span></span><br><span class="line"> <span class="attr">name:</span> <span class="string">chatservice-chat-{{</span> <span class="string">$key</span> <span class="string">}}</span></span><br><span class="line"> <span class="attr">namespace:</span> <span class="string">jhxjy-tiyan</span></span><br><span class="line"><span class="attr">spec:</span></span><br><span class="line"> <span class="attr">ports:</span></span><br><span class="line"> <span class="bullet">-</span> <span class="attr">name:</span> <span class="string">"80"</span></span><br><span class="line"> <span class="attr">port:</span> {{ <span class="string">$key</span> }}</span><br><span class="line"> <span class="attr">protocol:</span> <span class="string">TCP</span></span><br><span class="line"> <span class="attr">targetPort:</span> <span class="number">80</span></span><br><span class="line"> <span class="attr">selector:</span></span><br><span class="line"> <span class="attr">k8s-app:</span> <span class="string">chatservice-chat-{{</span> <span class="string">$key</span> <span class="string">}}</span></span><br><span class="line"> <span class="attr">sessionAffinity:</span> <span class="string">None</span></span><br><span class="line"> <span class="attr">type:</span> <span class="string">ClusterIP</span></span><br><span class="line"><span class="meta">---</span></span><br><span class="line">{{<span class="bullet">-</span> <span class="string">end</span> }}</span><br><span class="line">{{<span class="bullet">-</span> <span class="string">end</span> }}</span><br><span class="line"></span><br><span class="line"></span><br></pre></td></tr></table></figure>
<h2 id="3-1-Yaml调试渲染"><a href="#3-1-Yaml调试渲染" class="headerlink" title="3.1 Yaml调试渲染"></a>3.1 Yaml调试渲染</h2><p>yaml 文件写好就该是同步和部署了，在部署前可以先用以下命令测试下，渲染不执行：</p>
<figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line">helm install releasename chart目录 --dry-run --debug</span><br><span class="line"><span class="comment">#部署</span></span><br><span class="line">helm install deploy20211214 <span class="built_in">test</span> -n namespace</span><br><span class="line"><span class="comment">#查看release</span></span><br><span class="line">helm ls -n namespace</span><br><span class="line"><span class="comment">#卸载</span></span><br><span class="line">helm uninstall deploy20211214 -n namespace</span><br></pre></td></tr></table></figure>
<h1 id="4-总结"><a href="#4-总结" class="headerlink" title="4.总结"></a>4.总结</h1><p>通过这种方式，覆盖了游戏版本更新，硬件配置升级，配置精准挂载等通用化操作，都只需要维护一个value，并且拓补清晰，降低了运维维护成本，同时又通用高效</p>
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