{"id":65289,"date":"2026-01-24T19:08:34","date_gmt":"2026-01-24T11:08:34","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/65289.html"},"modified":"2026-01-24T19:08:34","modified_gmt":"2026-01-24T11:08:34","slug":"%e5%88%ab%e5%86%8d%e6%89%8b%e5%8a%a8%e6%94%b9-yaml-%e4%ba%86%ef%bc%81%e7%94%a8-go-%e7%bc%96%e5%86%99-k8s-operator%ef%bc%8c%e5%ae%9e%e7%8e%b0%e4%b8%9a%e5%8a%a1%e5%ba%94%e7%94%a8%e7%9a%84","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/65289.html","title":{"rendered":"\u522b\u518d\u624b\u52a8\u6539 YAML \u4e86\uff01\u7528 Go \u7f16\u5199 K8s Operator\uff0c\u5b9e\u73b0\u4e1a\u52a1\u5e94\u7528\u7684\u201c\u81ea\u52a8\u9a7e\u9a76\u201d"},"content":{"rendered":"<p>\u6458\u8981&#xff1a; \u8fd8\u5728\u7528\u4f20\u7edf\u7684 Helm Chart \u90e8\u7f72\u5e94\u7528&#xff1f;\u9762\u5bf9\u590d\u6742\u7684 Day 2 \u8fd0\u7ef4&#xff08;\u5982\u81ea\u52a8\u6269\u5bb9\u3001\u6545\u969c\u81ea\u6108\u3001\u914d\u7f6e\u70ed\u66f4&#xff09;&#xff0c;\u5355\u7eaf\u7684\u6a21\u677f\u6e32\u67d3\u5df2\u7ecf\u6349\u895f\u89c1\u8098\u3002\u672c\u6587\u5c06\u5e26\u4f60\u8df3\u51fa YAML \u5de5\u7a0b\u5e08\u7684\u602a\u5708&#xff0c;\u4f7f\u7528 Go \u8bed\u8a00\u548c Kubebuilder \u5f00\u53d1\u4e13\u5c5e\u7684 K8s Operator&#xff0c;\u4e3a\u4f60\u7684\u4e1a\u52a1\u5e94\u7528\u88c5\u4e0a\u201c\u81ea\u52a8\u9a7e\u9a76\u201d\u5f15\u64ce\u3002\u8fd9\u4e0d\u4ec5\u662f K8s \u7684\u9ad8\u9636\u73a9\u6cd5&#xff0c;\u66f4\u662f\u7b80\u5386\u4e0a\u6781\u5177\u542b\u91d1\u91cf\u7684\u6280\u672f\u4eae\u70b9\u3002<\/p>\n<hr \/>\n<h3>1. \u75db\u70b9&#xff1a;\u4e3a\u4ec0\u4e48 Helm \u4e0d\u591f\u7528\u4e86&#xff1f;<\/h3>\n<p>\u5728 Kubernetes \u4e2d\u90e8\u7f72\u5e94\u7528&#xff0c;\u5927\u591a\u6570\u4eba\u7684\u8fdb\u5316\u8def\u5f84\u662f\u8fd9\u6837\u7684&#xff1a;<\/p>\n<li>\u9752\u94dc\u9636\u6bb5&#xff1a; \u624b\u5199 Deployment.yaml \u548c Service.yaml&#xff0c;\u7528 kubectl apply \u90e8\u7f72\u3002<\/li>\n<li>\u9ec4\u91d1\u9636\u6bb5&#xff1a; \u5f15\u5165 Helm Chart&#xff0c;\u5c06 YAML \u6a21\u677f\u5316&#xff0c;\u5b9e\u73b0\u5e94\u7528\u7684\u201c\u4e00\u952e\u5b89\u88c5\u201d&#xff08;Day 1 \u9636\u6bb5&#xff09;\u3002<\/li>\n<p>\u7136\u800c&#xff0c;\u5f53\u4e1a\u52a1\u8fdb\u5165 Day 2 \u9636\u6bb5&#xff08;\u6301\u7eed\u8fd0\u7ef4&#xff09;&#xff0c;Helm \u5c31\u663e\u5f97\u529b\u4e0d\u4ece\u5fc3\u4e86&#xff1a;<\/p>\n<ul>\n<li>\u5982\u4f55\u5b9e\u73b0\u72b6\u6001\u540c\u6b65&#xff1f; \u5f53\u914d\u7f6e\u53d8\u66f4\u65f6&#xff0c;\u5982\u4f55\u81ea\u52a8\u91cd\u542f\u76f8\u5173 Pod&#xff1f;<\/li>\n<li>\u5982\u4f55\u5904\u7406\u590d\u6742\u4f9d\u8d56&#xff1f; \u6bd4\u5982\u6570\u636e\u5e93\u5fc5\u987b\u5728\u5e94\u7528\u542f\u52a8\u524d\u5148\u521d\u59cb\u5316\u8868\u7ed3\u6784&#xff1f;<\/li>\n<li>\u5982\u4f55\u5b9e\u73b0\u6545\u969c\u81ea\u6108&#xff1f; \u5982\u679c\u67d0\u4e2a\u7ec4\u4ef6\u5047\u6b7b&#xff0c;\u5982\u4f55\u6839\u636e\u4e1a\u52a1\u7279\u5b9a\u7684\u5065\u5eb7\u6307\u6807\u8fdb\u884c\u81ea\u52a8\u9694\u79bb&#xff1f;<\/li>\n<\/ul>\n<p>Helm \u53ea\u662f\u4e00\u4e2a\u201c\u5b89\u88c5\u5305\u5de5\u5177\u201d&#xff0c;\u5b83\u4e0d\u7ba1\u5e94\u7528\u5b89\u88c5\u540e\u53d1\u751f\u4e86\u4ec0\u4e48\u3002\u800c Operator \u6a21\u5f0f&#xff0c;\u5219\u662f\u7ed9\u4f60\u7684\u5e94\u7528\u96c7\u4e86\u4e00\u4e2a 24 \u5c0f\u65f6\u76d1\u63a7\u7684\u201c\u673a\u5668\u4eba\u8fd0\u7ef4\u201d\u3002<\/p>\n<h3>2. \u6838\u5fc3\u67b6\u6784&#xff1a;Operator \u662f\u5982\u4f55\u5de5\u4f5c\u7684&#xff1f;<\/h3>\n<p>Operator &#061; CRD (\u81ea\u5b9a\u4e49\u8d44\u6e90) &#043; Controller (\u63a7\u5236\u5668)\u3002<\/p>\n<p>\u5b83\u7684\u6838\u5fc3\u601d\u60f3\u662f&#xff1a;\u4f60\u53ea\u9700\u5b9a\u4e49\u201c\u671f\u671b\u72b6\u6001\u201d&#xff08;\u6bd4\u5982&#xff1a;\u6211\u9700\u8981\u4e00\u4e2a 3 \u8282\u70b9\u7684 Redis \u96c6\u7fa4&#xff09;&#xff0c;\u63a7\u5236\u5668\u4f1a\u4e0d\u65ad\u76d1\u6d4b\u201c\u5f53\u524d\u72b6\u6001\u201d&#xff0c;\u5e76\u81ea\u52a8\u6267\u884c\u64cd\u4f5c\u4ee5\u62b9\u5e73\u4e24\u8005\u4e4b\u95f4\u7684\u5dee\u5f02\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f Operator \u7684\u6781\u7b80\u5de5\u4f5c\u6d41&#xff1a;<\/p>\n<p>#mermaid-svg-BYC1qBbjrJlNQsNO{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;fill:#333;}@keyframes edge-animation-frame{from{stroke-dashoffset:0;}}@keyframes dash{to{stroke-dashoffset:0;}}#mermaid-svg-BYC1qBbjrJlNQsNO .edge-animation-slow{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 50s linear infinite;stroke-linecap:round;}#mermaid-svg-BYC1qBbjrJlNQsNO .edge-animation-fast{stroke-dasharray:9,5!important;stroke-dashoffset:900;animation:dash 20s linear infinite;stroke-linecap:round;}#mermaid-svg-BYC1qBbjrJlNQsNO .error-icon{fill:#552222;}#mermaid-svg-BYC1qBbjrJlNQsNO .error-text{fill:#552222;stroke:#552222;}#mermaid-svg-BYC1qBbjrJlNQsNO .edge-thickness-normal{stroke-width:1px;}#mermaid-svg-BYC1qBbjrJlNQsNO .edge-thickness-thick{stroke-width:3.5px;}#mermaid-svg-BYC1qBbjrJlNQsNO .edge-pattern-solid{stroke-dasharray:0;}#mermaid-svg-BYC1qBbjrJlNQsNO .edge-thickness-invisible{stroke-width:0;fill:none;}#mermaid-svg-BYC1qBbjrJlNQsNO .edge-pattern-dashed{stroke-dasharray:3;}#mermaid-svg-BYC1qBbjrJlNQsNO .edge-pattern-dotted{stroke-dasharray:2;}#mermaid-svg-BYC1qBbjrJlNQsNO .marker{fill:#333333;stroke:#333333;}#mermaid-svg-BYC1qBbjrJlNQsNO .marker.cross{stroke:#333333;}#mermaid-svg-BYC1qBbjrJlNQsNO svg{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;}#mermaid-svg-BYC1qBbjrJlNQsNO p{margin:0;}#mermaid-svg-BYC1qBbjrJlNQsNO .label{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;color:#333;}#mermaid-svg-BYC1qBbjrJlNQsNO .cluster-label text{fill:#333;}#mermaid-svg-BYC1qBbjrJlNQsNO .cluster-label span{color:#333;}#mermaid-svg-BYC1qBbjrJlNQsNO .cluster-label span p{background-color:transparent;}#mermaid-svg-BYC1qBbjrJlNQsNO .label text,#mermaid-svg-BYC1qBbjrJlNQsNO span{fill:#333;color:#333;}#mermaid-svg-BYC1qBbjrJlNQsNO .node rect,#mermaid-svg-BYC1qBbjrJlNQsNO .node circle,#mermaid-svg-BYC1qBbjrJlNQsNO .node ellipse,#mermaid-svg-BYC1qBbjrJlNQsNO .node polygon,#mermaid-svg-BYC1qBbjrJlNQsNO .node path{fill:#ECECFF;stroke:#9370DB;stroke-width:1px;}#mermaid-svg-BYC1qBbjrJlNQsNO .rough-node .label text,#mermaid-svg-BYC1qBbjrJlNQsNO .node .label text,#mermaid-svg-BYC1qBbjrJlNQsNO .image-shape .label,#mermaid-svg-BYC1qBbjrJlNQsNO .icon-shape .label{text-anchor:middle;}#mermaid-svg-BYC1qBbjrJlNQsNO .node .katex path{fill:#000;stroke:#000;stroke-width:1px;}#mermaid-svg-BYC1qBbjrJlNQsNO .rough-node .label,#mermaid-svg-BYC1qBbjrJlNQsNO .node .label,#mermaid-svg-BYC1qBbjrJlNQsNO .image-shape .label,#mermaid-svg-BYC1qBbjrJlNQsNO .icon-shape .label{text-align:center;}#mermaid-svg-BYC1qBbjrJlNQsNO .node.clickable{cursor:pointer;}#mermaid-svg-BYC1qBbjrJlNQsNO .root .anchor path{fill:#333333!important;stroke-width:0;stroke:#333333;}#mermaid-svg-BYC1qBbjrJlNQsNO .arrowheadPath{fill:#333333;}#mermaid-svg-BYC1qBbjrJlNQsNO .edgePath .path{stroke:#333333;stroke-width:2.0px;}#mermaid-svg-BYC1qBbjrJlNQsNO .flowchart-link{stroke:#333333;fill:none;}#mermaid-svg-BYC1qBbjrJlNQsNO .edgeLabel{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-BYC1qBbjrJlNQsNO .edgeLabel p{background-color:rgba(232,232,232, 0.8);}#mermaid-svg-BYC1qBbjrJlNQsNO .edgeLabel rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-BYC1qBbjrJlNQsNO .labelBkg{background-color:rgba(232, 232, 232, 0.5);}#mermaid-svg-BYC1qBbjrJlNQsNO .cluster rect{fill:#ffffde;stroke:#aaaa33;stroke-width:1px;}#mermaid-svg-BYC1qBbjrJlNQsNO .cluster text{fill:#333;}#mermaid-svg-BYC1qBbjrJlNQsNO .cluster span{color:#333;}#mermaid-svg-BYC1qBbjrJlNQsNO div.mermaidTooltip{position:absolute;text-align:center;max-width:200px;padding:2px;font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:12px;background:hsl(80, 100%, 96.2745098039%);border:1px solid #aaaa33;border-radius:2px;pointer-events:none;z-index:100;}#mermaid-svg-BYC1qBbjrJlNQsNO .flowchartTitleText{text-anchor:middle;font-size:18px;fill:#333;}#mermaid-svg-BYC1qBbjrJlNQsNO rect.text{fill:none;stroke-width:0;}#mermaid-svg-BYC1qBbjrJlNQsNO .icon-shape,#mermaid-svg-BYC1qBbjrJlNQsNO .image-shape{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-BYC1qBbjrJlNQsNO .icon-shape p,#mermaid-svg-BYC1qBbjrJlNQsNO .image-shape p{background-color:rgba(232,232,232, 0.8);padding:2px;}#mermaid-svg-BYC1qBbjrJlNQsNO .icon-shape rect,#mermaid-svg-BYC1qBbjrJlNQsNO .image-shape rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-BYC1qBbjrJlNQsNO .label-icon{display:inline-block;height:1em;overflow:visible;vertical-align:-0.125em;}#mermaid-svg-BYC1qBbjrJlNQsNO .node .label-icon path{fill:currentColor;stroke:revert;stroke-width:revert;}#mermaid-svg-BYC1qBbjrJlNQsNO :root{&#8211;mermaid-font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;}<span class=\"edgeLabel\"><\/p>\n<p>Apply YAML<\/p>\n<p><\/span><span class=\"edgeLabel\"><\/span><span class=\"edgeLabel\"><\/p>\n<p>\u89e6\u53d1\u4e8b\u4ef6<\/p>\n<p><\/span><span class=\"edgeLabel\"><\/p>\n<p>\u8bfb\u53d6\u671f\u671b\u72b6\u6001<\/p>\n<p><\/span><span class=\"edgeLabel\"><\/p>\n<p>\u5b58\u5728\u5dee\u5f02<\/p>\n<p><\/span><span class=\"edgeLabel\"><\/span><span class=\"edgeLabel\"><\/p>\n<p>\u72b6\u6001\u53cd\u9988<\/p>\n<p><\/span><span class=\"nodeLabel\"><\/p>\n<p>\u8fd0\u7ef4\u4eba\u5458<\/p>\n<p><\/span><span class=\"nodeLabel\"><\/p>\n<p>CRD \u81ea\u5b9a\u4e49\u8d44\u6e90<\/p>\n<p><\/span><span class=\"nodeLabel\"><\/p>\n<p>K8s API Server<\/p>\n<p><\/span><span class=\"nodeLabel\"><\/p>\n<p>Go Controller<\/p>\n<p><\/span><span class=\"nodeLabel\"><\/p>\n<p>\u5bf9\u6bd4\u5f53\u524d\u72b6\u6001<\/p>\n<p><\/span><span class=\"nodeLabel\"><\/p>\n<p>\u6267\u884c\u8c03\u8c10\/Reconcile<\/p>\n<p><\/span><span class=\"nodeLabel\"><\/p>\n<p>\u521b\u5efa\/\u66f4\u65b0 Pod, Svc\u7b49<\/p>\n<p><\/span><\/p>\n<h3>3. \u5b9e\u6218\u6f14\u7ec3&#xff1a;\u7528 Go \u7f16\u5199\u4e00\u4e2a App-Operator<\/h3>\n<p>\u6211\u4eec\u5c06\u4f7f\u7528\u5b98\u65b9\u63a8\u8350\u7684\u811a\u624b\u67b6\u5de5\u5177 Kubebuilder \u6765\u5f00\u53d1\u3002\u5047\u8bbe\u6211\u4eec\u8981\u7ba1\u7406\u4e00\u4e2a\u540d\u4e3a MyApp \u7684\u4e1a\u52a1\u5e94\u7528\u3002<\/p>\n<h4>3.1 \u521d\u59cb\u5316\u9879\u76ee<\/h4>\n<p>\u9996\u5148&#xff0c;\u786e\u4fdd\u672c\u5730\u5b89\u88c5\u4e86 Go \u548c Kubebuilder\u3002\u7136\u540e\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u521d\u59cb\u5316\u9879\u76ee\u5e76\u521b\u5efa API&#xff1a;<\/p>\n<p><span class=\"token function\">mkdir<\/span> app-operator <span class=\"token operator\">&amp;&amp;<\/span> <span class=\"token builtin class-name\">cd<\/span> app-operator<br \/>\ngo mod init app-operator<br \/>\n<span class=\"token comment\"># \u521d\u59cb\u5316\u9879\u76ee<\/span><br \/>\nkubebuilder init &#8211;domain csdn.com &#8211;repo app-operator<br \/>\n<span class=\"token comment\"># \u521b\u5efa CRD \u548c Controller<\/span><br \/>\nkubebuilder create api &#8211;group web &#8211;version v1 &#8211;kind MyApp<\/p>\n<h4>3.2 \u5b9a\u4e49 CRD \u7ed3\u6784 (api\/v1\/myapp_types.go)<\/h4>\n<p>\u6211\u4eec\u5728 Spec \u4e2d\u5b9a\u4e49\u5e94\u7528\u7684\u671f\u671b\u72b6\u6001&#xff0c;\u5728 Status \u4e2d\u8bb0\u5f55\u5e94\u7528\u7684\u5f53\u524d\u72b6\u6001\u3002<\/p>\n<p><span class=\"token comment\">\/\/ MyAppSpec \u5b9a\u4e49\u671f\u671b\u72b6\u6001<\/span><br \/>\n<span class=\"token keyword\">type<\/span> MyAppSpec <span class=\"token keyword\">struct<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/ \u5e94\u7528\u7684\u526f\u672c\u6570<\/span><br \/>\nReplicas <span class=\"token operator\">*<\/span><span class=\"token builtin\">int32<\/span> <span class=\"token string\">&#096;json:&#034;replicas&#034;&#096;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u5e94\u7528\u955c\u50cf<\/span><br \/>\nImage <span class=\"token builtin\">string<\/span> <span class=\"token string\">&#096;json:&#034;image&#034;&#096;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u670d\u52a1\u7aef\u53e3<\/span><br \/>\nPort <span class=\"token builtin\">int32<\/span> <span class=\"token string\">&#096;json:&#034;port&#034;&#096;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ MyAppStatus \u5b9a\u4e49\u5f53\u524d\u72b6\u6001<\/span><br \/>\n<span class=\"token keyword\">type<\/span> MyAppStatus <span class=\"token keyword\">struct<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/ \u5b9e\u9645\u8fd0\u884c\u7684 Pod \u6570\u91cf<\/span><br \/>\nAvailableReplicas <span class=\"token builtin\">int32<\/span> <span class=\"token string\">&#096;json:&#034;availableReplicas&#034;&#096;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u4fee\u6539\u5b8c\u6210\u540e&#xff0c;\u6267\u884c make manifests \u751f\u6210 CRD \u7684 YAML \u6587\u4ef6\u3002<\/p>\n<h4>3.3 \u6838\u5fc3\u903b\u8f91&#xff1a;\u7f16\u5199\u8c03\u8c10\u5668 (controllers\/myapp_controller.go)<\/h4>\n<p>\u8fd9\u662f Operator \u7684\u5927\u8111&#xff0c;\u4e5f\u5c31\u662f\u8457\u540d\u7684 Reconcile (\u8c03\u8c10) \u5faa\u73af\u3002\u6211\u4eec\u8981\u5728\u8fd9\u91cc\u5b9e\u73b0\u201c\u81ea\u52a8\u9a7e\u9a76\u201d\u903b\u8f91\u3002<\/p>\n<p>#mermaid-svg-8jObtSk6v7ra7MMZ{font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;font-size:16px;fill:#333;}@keyframes 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.flowchartTitleText{text-anchor:middle;font-size:18px;fill:#333;}#mermaid-svg-8jObtSk6v7ra7MMZ rect.text{fill:none;stroke-width:0;}#mermaid-svg-8jObtSk6v7ra7MMZ .icon-shape,#mermaid-svg-8jObtSk6v7ra7MMZ .image-shape{background-color:rgba(232,232,232, 0.8);text-align:center;}#mermaid-svg-8jObtSk6v7ra7MMZ .icon-shape p,#mermaid-svg-8jObtSk6v7ra7MMZ .image-shape p{background-color:rgba(232,232,232, 0.8);padding:2px;}#mermaid-svg-8jObtSk6v7ra7MMZ .icon-shape rect,#mermaid-svg-8jObtSk6v7ra7MMZ .image-shape rect{opacity:0.5;background-color:rgba(232,232,232, 0.8);fill:rgba(232,232,232, 0.8);}#mermaid-svg-8jObtSk6v7ra7MMZ .label-icon{display:inline-block;height:1em;overflow:visible;vertical-align:-0.125em;}#mermaid-svg-8jObtSk6v7ra7MMZ .node .label-icon path{fill:currentColor;stroke:revert;stroke-width:revert;}#mermaid-svg-8jObtSk6v7ra7MMZ :root{&#8211;mermaid-font-family:\\&#8221;trebuchet ms\\&#8221;,verdana,arial,sans-serif;}<span class=\"edgeLabel\"><\/span><span class=\"edgeLabel\"><\/span><span class=\"edgeLabel\"><\/p>\n<p>\u4e0d\u5b58\u5728<\/p>\n<p><\/span><span class=\"edgeLabel\"><\/p>\n<p>\u5b58\u5728<\/p>\n<p><\/span><span class=\"edgeLabel\"><\/p>\n<p>\u6709\u53d8\u66f4<\/p>\n<p><\/span><span class=\"edgeLabel\"><\/span><span class=\"edgeLabel\"><\/span><span class=\"nodeLabel\"><\/p>\n<p>\u89e6\u53d1 Reconcile<\/p>\n<p><\/span><span class=\"nodeLabel\"><\/p>\n<p>\u83b7\u53d6 MyApp \u5b9e\u4f8b<\/p>\n<p><\/span><span class=\"nodeLabel\"><\/p>\n<p>\u68c0\u67e5 Deployment \u662f\u5426\u5b58\u5728<\/p>\n<p><\/span><span class=\"nodeLabel\"><\/p>\n<p>\u521b\u5efa Deployment<\/p>\n<p><\/span><span class=\"nodeLabel\"><\/p>\n<p>\u6bd4\u5bf9 Spec \u5dee\u5f02<\/p>\n<p><\/span><span class=\"nodeLabel\"><\/p>\n<p>\u66f4\u65b0 Deployment<\/p>\n<p><\/span><span class=\"nodeLabel\"><\/p>\n<p>\u66f4\u65b0 Status<\/p>\n<p><\/span><\/p>\n<p>\u6838\u5fc3 Go \u4ee3\u7801\u5b9e\u73b0\u5982\u4e0b&#xff1a;<\/p>\n<p><span class=\"token keyword\">func<\/span> <span class=\"token punctuation\">(<\/span>r <span class=\"token operator\">*<\/span>MyAppReconciler<span class=\"token punctuation\">)<\/span> <span class=\"token function\">Reconcile<\/span><span class=\"token punctuation\">(<\/span>ctx context<span class=\"token punctuation\">.<\/span>Context<span class=\"token punctuation\">,<\/span> req ctrl<span class=\"token punctuation\">.<\/span>Request<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">(<\/span>ctrl<span class=\"token punctuation\">.<\/span>Result<span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">error<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\nlog <span class=\"token operator\">:&#061;<\/span> log<span class=\"token punctuation\">.<\/span><span class=\"token function\">FromContext<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 1. \u83b7\u53d6 MyApp \u5b9e\u4f8b<\/span><br \/>\n<span class=\"token keyword\">var<\/span> myapp webv1<span class=\"token punctuation\">.<\/span>MyApp<br \/>\n<span class=\"token keyword\">if<\/span> err <span class=\"token operator\">:&#061;<\/span> r<span class=\"token punctuation\">.<\/span><span class=\"token function\">Get<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token punctuation\">,<\/span> req<span class=\"token punctuation\">.<\/span>NamespacedName<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>myapp<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> err <span class=\"token operator\">!&#061;<\/span> <span class=\"token boolean\">nil<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> ctrl<span class=\"token punctuation\">.<\/span>Result<span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> client<span class=\"token punctuation\">.<\/span><span class=\"token function\">IgnoreNotFound<\/span><span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 2. \u68c0\u67e5\u5e95\u5c42\u7684 Deployment \u662f\u5426\u5b58\u5728<\/span><br \/>\n<span class=\"token keyword\">var<\/span> deploy appsv1<span class=\"token punctuation\">.<\/span>Deployment<br \/>\nerr <span class=\"token operator\">:&#061;<\/span> r<span class=\"token punctuation\">.<\/span><span class=\"token function\">Get<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token punctuation\">,<\/span> req<span class=\"token punctuation\">.<\/span>NamespacedName<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>deploy<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">if<\/span> err <span class=\"token operator\">!&#061;<\/span> <span class=\"token boolean\">nil<\/span> <span class=\"token operator\">&amp;&amp;<\/span> errors<span class=\"token punctuation\">.<\/span><span class=\"token function\">IsNotFound<\/span><span class=\"token punctuation\">(<\/span>err<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/ 3. \u4e0d\u5b58\u5728\u5219\u521b\u5efa<\/span><br \/>\nlog<span class=\"token punctuation\">.<\/span><span class=\"token function\">Info<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Creating a new Deployment&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;Deployment.Namespace&#034;<\/span><span class=\"token punctuation\">,<\/span> myapp<span class=\"token punctuation\">.<\/span>Namespace<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;Deployment.Name&#034;<\/span><span class=\"token punctuation\">,<\/span> myapp<span class=\"token punctuation\">.<\/span>Name<span class=\"token punctuation\">)<\/span><br \/>\nnewDeploy <span class=\"token operator\">:&#061;<\/span> r<span class=\"token punctuation\">.<\/span><span class=\"token function\">constructDeployment<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">&amp;<\/span>myapp<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">if<\/span> err <span class=\"token operator\">:&#061;<\/span> r<span class=\"token punctuation\">.<\/span><span class=\"token function\">Create<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token punctuation\">,<\/span> newDeploy<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> err <span class=\"token operator\">!&#061;<\/span> <span class=\"token boolean\">nil<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> ctrl<span class=\"token punctuation\">.<\/span>Result<span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> err<br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">return<\/span> ctrl<span class=\"token punctuation\">.<\/span>Result<span class=\"token punctuation\">{<\/span>Requeue<span class=\"token punctuation\">:<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token boolean\">nil<\/span><br \/>\n<span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> err <span class=\"token operator\">!&#061;<\/span> <span class=\"token boolean\">nil<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> ctrl<span class=\"token punctuation\">.<\/span>Result<span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> err<br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 4. \u5b58\u5728\u5219\u68c0\u67e5\u662f\u5426\u9700\u8981\u66f4\u65b0 (\u4f8b\u5982\u526f\u672c\u6570\u6216\u955c\u50cf\u53d8\u4e86)<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token operator\">*<\/span>deploy<span class=\"token punctuation\">.<\/span>Spec<span class=\"token punctuation\">.<\/span>Replicas <span class=\"token operator\">!&#061;<\/span> <span class=\"token operator\">*<\/span>myapp<span class=\"token punctuation\">.<\/span>Spec<span class=\"token punctuation\">.<\/span>Replicas <span class=\"token operator\">||<\/span> deploy<span class=\"token punctuation\">.<\/span>Spec<span class=\"token punctuation\">.<\/span>Template<span class=\"token punctuation\">.<\/span>Spec<span class=\"token punctuation\">.<\/span>Containers<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>Image <span class=\"token operator\">!&#061;<\/span> myapp<span class=\"token punctuation\">.<\/span>Spec<span class=\"token punctuation\">.<\/span>Image <span class=\"token punctuation\">{<\/span><br \/>\nlog<span class=\"token punctuation\">.<\/span><span class=\"token function\">Info<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Updating Deployment&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;Deployment.Namespace&#034;<\/span><span class=\"token punctuation\">,<\/span> myapp<span class=\"token punctuation\">.<\/span>Namespace<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;Deployment.Name&#034;<\/span><span class=\"token punctuation\">,<\/span> myapp<span class=\"token punctuation\">.<\/span>Name<span class=\"token punctuation\">)<\/span><br \/>\ndeploy<span class=\"token punctuation\">.<\/span>Spec<span class=\"token punctuation\">.<\/span>Replicas <span class=\"token operator\">&#061;<\/span> myapp<span class=\"token punctuation\">.<\/span>Spec<span class=\"token punctuation\">.<\/span>Replicas<br \/>\ndeploy<span class=\"token punctuation\">.<\/span>Spec<span class=\"token punctuation\">.<\/span>Template<span class=\"token punctuation\">.<\/span>Spec<span class=\"token punctuation\">.<\/span>Containers<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">.<\/span>Image <span class=\"token operator\">&#061;<\/span> myapp<span class=\"token punctuation\">.<\/span>Spec<span class=\"token punctuation\">.<\/span>Image<br \/>\n<span class=\"token keyword\">if<\/span> err <span class=\"token operator\">:&#061;<\/span> r<span class=\"token punctuation\">.<\/span><span class=\"token function\">Update<\/span><span class=\"token punctuation\">(<\/span>ctx<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>deploy<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> err <span class=\"token operator\">!&#061;<\/span> <span class=\"token boolean\">nil<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">return<\/span> ctrl<span class=\"token punctuation\">.<\/span>Result<span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> err<br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> ctrl<span class=\"token punctuation\">.<\/span>Result<span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token boolean\">nil<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>3.4 \u90e8\u7f72\u4e0e\u6d4b\u8bd5<\/h4>\n<p>\u73b0\u5728&#xff0c;\u6211\u4eec\u53ef\u4ee5\u50cf\u7ba1\u7406\u539f\u751f K8s \u8d44\u6e90\u4e00\u6837\u7ba1\u7406\u6211\u4eec\u7684\u4e1a\u52a1\u5e94\u7528\u4e86\u3002<\/p>\n<p>\u521b\u5efa\u4e00\u4e2a\u81ea\u5b9a\u4e49\u8d44\u6e90\u5b9e\u4f8b myapp-sample.yaml&#xff1a;<\/p>\n<p><span class=\"token key atrule\">apiVersion<\/span><span class=\"token punctuation\">:<\/span> web.csdn.com\/v1<br \/>\n<span class=\"token key atrule\">kind<\/span><span class=\"token punctuation\">:<\/span> MyApp<br \/>\n<span class=\"token key atrule\">metadata<\/span><span class=\"token punctuation\">:<\/span><br \/>\n  <span class=\"token key atrule\">name<\/span><span class=\"token punctuation\">:<\/span> myapp<span class=\"token punctuation\">&#8211;<\/span>sample<br \/>\n<span class=\"token key atrule\">spec<\/span><span class=\"token punctuation\">:<\/span><br \/>\n  <span class=\"token key atrule\">replicas<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">3<\/span><br \/>\n  <span class=\"token key atrule\">image<\/span><span class=\"token punctuation\">:<\/span> nginx<span class=\"token punctuation\">:<\/span>1.21.0<br \/>\n  <span class=\"token key atrule\">port<\/span><span class=\"token punctuation\">:<\/span> <span class=\"token number\">80<\/span><\/p>\n<p>\u6267\u884c kubectl apply -f myapp-sample.yaml&#xff0c;\u4f60\u7684 Operator \u5c31\u4f1a\u81ea\u52a8\u63a5\u7ba1&#xff0c;\u521b\u5efa\u51fa\u5bf9\u5e94\u7684 Deployment \u548c Service\u3002\u5982\u679c\u4f60\u624b\u52a8\u5220\u9664\u4e86\u4e00\u4e2a Pod&#xff0c;Operator \u4f1a\u5728\u51e0\u79d2\u949f\u5185\u81ea\u52a8\u91cd\u5efa\u5b83&#xff0c;\u5b9e\u73b0\u4e86\u771f\u6b63\u7684\u201c\u6545\u969c\u81ea\u6108\u201d\u3002<\/p>\n<h3>4. \u603b\u7ed3&#xff1a;Operator 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