{"id":39461,"date":"2025-05-23T18:52:23","date_gmt":"2025-05-23T10:52:23","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/39461.html"},"modified":"2025-05-23T18:52:23","modified_gmt":"2025-05-23T10:52:23","slug":"kubernetes-%e8%bf%90%e7%bb%b4%e6%93%8d%e4%bd%9c%e6%89%8b%e5%86%8c%ef%bc%9a%e4%bb%8e-etcd-%e5%bf%ab%e7%85%a7%e8%bf%9b%e8%a1%8c%e7%b2%be%e7%a1%ae%e6%81%a2%e5%a4%8d","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/39461.html","title":{"rendered":"Kubernetes \u8fd0\u7ef4\u64cd\u4f5c\u624b\u518c\uff1a\u4ece etcd \u5feb\u7167\u8fdb\u884c\u7cbe\u786e\u6062\u590d"},"content":{"rendered":"

1<\/p>\n

\u00a0 \u00a0<\/h4>\n

5 \u6b65\u5b9e\u73b0 etcd \u7cbe\u786e\u6062\u590d<\/p>\n

  • \n

    \u5c06\u5feb\u7167\u6062\u590d\u5230\u672c\u5730 etcd \u6570\u636e\u76ee\u5f55\u3002<\/p>\n<\/li>\n

  • \n

    \u4f7f\u7528\u6062\u590d\u7684\u6570\u636e\u542f\u52a8\u672c\u5730 etcd \u5b9e\u4f8b\u3002<\/p>\n<\/li>\n

  • \n

    \u4f7f\u7528 etcdctl \u67e5\u8be2\u7279\u5b9a\u952e（\u4f8b\u5982，ConfigMap）\u3002<\/p>\n<\/li>\n

  • \n

    \u4f7f\u7528 auger \u89e3\u7801\u4ee5\u63d0\u53d6\u5e72\u51c0\u7684 YAML\u3002<\/p>\n<\/li>\n

  • \n

    \u4f7f\u7528 kubectl \u7533\u8bf7\u6062\u590d\u5230\u60a8\u7684\u5b9e\u65f6\u96c6\u7fa4\u3002<\/p>\n<\/li>\n

    \u672c\u6307\u5357\u5c06\u6307\u5bfc\u60a8\u4ece etcd \u5feb\u7167\u4e2d\u7cbe\u51c6\u5730\u6062\u590d\u8d44\u6e90，\u800c\u65e0\u9700\u89e6\u53d1\u5b8c\u6574\u7684\u96c6\u7fa4\u6062\u590d\u3002\u65e0\u8bba\u60a8\u662f\u8981\u6392\u9664\u610f\u5916\u5220\u9664\u6545\u969c，\u8fd8\u662f\u8fdb\u884c\u53d6\u8bc1\u8c03\u8bd5，\u8fd9\u79cd\u8f7b\u91cf\u7ea7\u4e14\u6709\u9488\u5bf9\u6027\u7684\u65b9\u6cd5\u90fd\u80fd\u6700\u5927\u7a0b\u5ea6\u5730\u51cf\u5c11\u505c\u673a\u65f6\u95f4\u3002#Kubernetes<\/p>\n

    2<\/p>\n

    \u00a0 \u00a0<\/h4>\n

    \u5f15\u8a00：🩺Kubernetes \u64cd\u4f5c\u91cc\u7684\u7d27\u6025\u60c5\u51b5<\/p>\n

    etcd \u662f Kubernetes \u96c6\u7fa4\u7684\u6838\u5fc3，\u5b83\u662f\u4e00\u4e2a\u5206\u5e03\u5f0f\u952e\u503c\u5b58\u50a8\u7cfb\u7edf，\u5fe0\u5b9e\u5730\u7ef4\u62a4\u7cfb\u7edf\u5185\u6bcf\u4e2a\u5bf9\u8c61\u7684\u72b6\u6001\u3002\u4f46\u662f，\u5982\u679c\u67d0\u4e2a\u8d44\u6e90（\u4f8b\u5982 ConfigMap\u3001Secret \u6216 Deployment）\u88ab\u5220\u9664\u6216\u635f\u574f，\u4f1a\u53d1\u751f\u4ec0\u4e48\u60c5\u51b5\u5462？<\/p>\n

    \u542f\u52a8\u5b8c\u6574\u7684\u96c6\u7fa4\u6062\u590d\u5c31\u50cf\u8fdb\u884c\u5fc3\u810f\u624b\u672f\u6765\u4fee\u590d\u7eb8\u5f20\u5212\u4f24\u4e00\u6837\u3002\u5b83\u5177\u6709\u7834\u574f\u6027\u3001\u98ce\u9669\u6027，\u800c\u4e14\u901a\u5e38\u6ca1\u6709\u5fc5\u8981\u3002<\/p>\n

    \u8fd9\u5c31\u662f\u624b\u672f\u7cbe\u5ea6\u53d1\u6325\u4f5c\u7528\u7684\u5730\u65b9\u3002<\/p>\n

    \u60f3\u8c61\u4e00\u4e0b，\u60a8\u7684\u751f\u4ea7\u73af\u5883\u9677\u5165\u5371\u673a\u2014\u2014\u4e00\u4e2a\u91cd\u8981\u7684 ConfigMap \u6d88\u5931\u4e86，Pod \u5d29\u6e83\u4e86，\u7528\u6237\u53ea\u80fd\u76ef\u7740\u9519\u8bef\u9875\u9762\u3002\u5b8c\u5168\u56de\u6eda\u4f1a\u6bd4\u95ee\u9898\u672c\u8eab\u9020\u6210\u66f4\u5927\u7684\u635f\u5931\u3002\u60a8\u9700\u8981\u7684\u662f\u4e00\u4e2a\u201c\u5916\u79d1\u533b\u751f\u201d\u5f0f\u7684\u65b9\u6848：\u53ea\u4fee\u590d\u635f\u574f\u7684\u90e8\u5206，\u5176\u4ed6\u90e8\u5206\u4e00\u6982\u4e0d\u505a\u3002<\/p>\n

    \u5728\u672c\u535a\u5ba2\u4e2d，\u60a8\u5c06\u4e86\u89e3\u5982\u4f55：<\/p>\n

  • \n

    \u4ece etcd \u5feb\u7167\u4e2d\u9694\u79bb\u5e76\u63d0\u53d6\u7279\u5b9a\u8d44\u6e90<\/p>\n<\/li>\n

  • \n

    \u4ec5\u5c06\u6240\u9700\u5185\u5bb9\u76f4\u63a5\u6062\u590d\u5230\u5b9e\u65f6 Kubernetes \u96c6\u7fa4\u4e2d<\/p>\n<\/li>\n

  • \n

    \u907f\u514d\u4e0d\u5fc5\u8981\u7684\u505c\u673a\u5e76\u4fdd\u6301\u96c6\u7fa4\u7a33\u5b9a\u6027<\/p>\n<\/li>\n

  • \n

    \u975e\u5e38\u9002\u5408\u91cd\u89c6\u6700\u5c0f\u5f71\u54cd\u6062\u590d\u7684 DevOps\u3001SRE \u548c Kubernetes \u7ba1\u7406\u5458\u3002<\/p>\n<\/li>\n

    3<\/p>\n

    \u00a0 \u00a0<\/h4>\n

    \u5148\u51b3\u6761\u4ef6🔧<\/p>\n

    \u4e3a\u4e86\u7ee7\u7eed\u64cd\u4f5c，\u8bf7\u786e\u4fdd\u60a8\u5df2\u5177\u5907：<\/p>\n

      \n
    • \n

      etcd v3.4+ \u2014 etcd \u670d\u52a1\u5668\u4e8c\u8fdb\u5236\u6587\u4ef6\u53ef\u5728\u6b64\u5904\u83b7\u53d6<\/p>\n<\/li>\n

    • \n

      etcdctl \u2014 \u4e0e etcd \u4ea4\u4e92\u7684 CLI<\/p>\n<\/li>\n

    • \n

      auger \u2014 CLI \u5de5\u5177，\u7528\u4e8e\u5c06 etcd \u7684\u4e8c\u8fdb\u5236\u6709\u6548\u8d1f\u8f7d\u89e3\u7801\u4e3a YAML<\/p>\n<\/li>\n

    • \n

      kubectl \u2014 CLI \u7528\u4e8e\u5c06\u8d44\u6e90\u5e94\u7528\u4e8e Kubernetes \u96c6\u7fa4<\/p>\n<\/li>\n

    • \n

      \u5feb\u7167\u6587\u4ef6\u2014 \u4f8b\u5982 live-cluster-snapshot.db<\/p>\n<\/li>\n<\/ul>\n

      \u59cb\u7ec8\u5148\u5728\u6682\u5b58\u73af\u5883\u4e2d\u5de5\u4f5c\u3002\u4ece\u5e72\u51c0\u7684\u5feb\u7167\u5f00\u59cb：<\/p>\n

      etcdctl snapshot save live-cluster-snapshot.db<\/p>\n

      4<\/p>\n

      \u00a0 \u00a0<\/h4>\n

      \u6062\u590d\u8fc7\u7a0b🏥<\/p>\n

      \u5047\u8bbe production \u547d\u540d\u7a7a\u95f4\u4e2d\u4e00\u4e2a\u5173\u952e\u7684 ConfigMap app-config \u88ab\u610f\u5916\u5220\u9664\u4e86\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u5c06\u5176\u6062\u590d：<\/p>\n

      4.1<\/p>\n

      \u00a0 \u00a0<\/h4>\n

      🧬 \u6b65\u9aa4 1：\u51c6\u5907\u5feb\u7167<\/p>\n

      \u5982\u679c\u538b\u7f29，\u8bf7\u89e3\u538b\u7f29\u5feb\u7167：<\/p>\n

      gunzip live-cluster-snapshot.db.gz<\/p>\n

      \u7136\u540e\u6062\u590d\u5b83：<\/p>\n

      etcdctl snapshot restore live-cluster-snapshot.db –data-dir=recovery-etcd<\/p>\n

      4.2<\/p>\n

      \u00a0 \u00a0<\/h4>\n

      🩻 \u7b2c 2 \u6b65：\u542f\u52a8\u672c\u5730 etcd \u5b9e\u4f8b<\/p>\n

      etcd –data-dir=recovery-etcd –listen-client-urls=http:\/\/localhost:2379<\/p>\n

      \u6838\u5b9e：<\/p>\n

      etcdctl –endpoints=localhost:2379 endpoint status <\/p>\n

      4.3<\/p>\n

      \u00a0 \u00a0<\/h4>\n

      🔍 \u6b65\u9aa4 3：\u5b9a\u4f4d\u5e76\u63d0\u53d6\u8d44\u6e90<\/p>\n

      Kubernetes \u5c06 ConfigMap \u5b58\u50a8\u5728\u7c7b\u4f3c \/registry\/configmaps\/\/\u7684\u952e\u4e2d\u3002\u5217\u51fa\u751f\u4ea7\u547d\u540d\u7a7a\u95f4\u4e2d\u7684\u952e：<\/p>\n

      etcdctl –endpoints=localhost:2379 get –prefix "\/registry\/configmaps\/production" –keys-only\u4f60\u4f1a\u770b\u5230\u7c7b\u4f3c\u8fd9\u6837\u7684\u5185\u5bb9：<\/p>\n

      \/registry\/configmaps\/production\/app-config\u63d0\u53d6\u5e76\u89e3\u7801 ConfigMap：<\/p>\n

      etcdctl –endpoints=localhost:2379 get \/registry\/configmaps\/production\/app-config –print-value-only | auger decode > app-config.yaml<\/p>\n

      \u751f\u6210\u7684 app-config.yaml \u53ef\u80fd\u5982\u4e0b\u6240\u793a：<\/p>\n

      apiVersion: v1\u00a0 kind: ConfigMap\u00a0 metadata:\u00a0 \u00a0 name: app-config\u00a0 \u00a0 namespace: production\u00a0 data:\u00a0 \u00a0 api-url: "https:\/\/api.example.com"\u00a0 \u00a0 log-level: "debug" <\/p>\n

      <\/p>\n

      4.4<\/p>\n

      \u00a0 \u00a0<\/h4>\n

      \u6b65\u9aa4 4：\u6062\u590d\u5230\u96c6\u7fa4<\/p>\n

      \u901a\u8fc7\u8bd5\u8fd0\u884c\u6765\u6d4b\u8bd5\u4fee\u590d\u6548\u679c：<\/p>\n

      kubectl apply -f app-config.yaml –dry-run=server<\/p>\n

      \u5982\u679c\u4e00\u5207\u68c0\u67e5\u65e0\u8bef，\u5219\u5e94\u7528\u5b83：<\/p>\n

      kubectl apply -f app-config.yaml<\/p>\n

      \u8f93\u51fa：<\/p>\n

      configmap\/app-config created<\/p>\n

      4.5<\/p>\n

      \u00a0 \u00a0<\/h4>\n

      🧹 \u6b65\u9aa4 5：\u6e05\u7406<\/p>\n

      pkill etcdrm -rf recovery-etcd app-config.yaml <\/p>\n

      5<\/p>\n

      \u00a0 \u00a0<\/h4>\n

      \u9ad8\u7ea7\u573a\u666f🔍<\/p>\n

      5.1<\/p>\n

      \u00a0 \u00a0<\/h4>\n

      💠 \u8de8\u547d\u540d\u7a7a\u95f4\u6062\u590d<\/p>\n

      cat app-config.yaml | yq eval '.metadata.namespace = "dev"' | kubectl apply -f –<\/p>\n

      5.2<\/p>\n

      \u00a0 \u00a0<\/h4>\n

      🔐 \u52a0\u5bc6\u96c6\u7fa4 (KMS)<\/p>\n

      \u4f7f\u7528 etcdctl \u5e76\u6839\u636e etcd \u52a0\u5bc6\u6307\u5357\u914d\u7f6e\u89e3\u5bc6\u5bc6\u94a5\u3002📦\u6279\u91cf\u6062\u590d\u00a0<\/p>\n

      etcdctl –endpoints=localhost:2379 get –prefix "\/registry\/configmaps\/production" –print-value-only | auger decode > all-cm.yaml <\/p>\n

      6<\/p>\n

      \u00a0 \u00a0<\/h4>\n

      \u603b\u7ed3<\/p>\n

      \u6700\u540e\u7684\u60f3\u6cd5💡Kubernetes \u7ba1\u7406\u5458\u7ecf\u5e38\u4e3a\u707e\u96be\u6027\u6545\u969c\u505a\u51c6\u5907，\u4f46\u5ffd\u7565\u4e86\u7cbe\u786e\u6062\u590d\u7684\u4ef7\u503c\u3002\u80fd\u591f\u7cbe\u51c6\u5730\u63d0\u53d6\u548c\u6062\u590d\u8d44\u6e90，\u5e76\u51cf\u5c11\u505c\u673a\u65f6\u95f4\u3001\u9632\u6b62\u9644\u5e26\u635f\u5bb3\u3001\u589e\u5f3a\u5bf9\u4e8b\u4ef6\u54cd\u5e94\u7684\u4fe1\u5fc3\u3002\u5f53\u4e0b\u6b21\u707e\u96be\u6765\u4e34\u65f6，\u60a8\u4e0d\u4f1a\u624b\u5fd9\u811a\u4e71，\u800c\u662f\u4f1a\u91c7\u53d6\u884c\u52a8\u3002<\/p>\n

      \u968f\u624b\u5173\u6ce8\u6216\u8005\u201d\u5728\u770b\u201c，\u8bda\u631a\u611f\u8c22！<\/p>\n","protected":false},"excerpt":{"rendered":"

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