{"id":17434,"date":"2025-05-26T08:10:14","date_gmt":"2025-05-26T00:10:14","guid":{"rendered":"https:\/\/92it.top\/?p=17434"},"modified":"2025-08-15T14:24:50","modified_gmt":"2025-08-15T06:24:50","slug":"kubernetesk8s-nodeport-%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=17434","title":{"rendered":"\ud83c\udf40Kubernetes(k8s) NodePort \u4ecb\u7ecd"},"content":{"rendered":"\n

\u5728 Kubernetes\uff08K8s\uff09\u4e2d\uff0cNodePort<\/strong>\u00a0\u662f\u4e00\u79cd\u5c06\u96c6\u7fa4\u5185\u90e8\u670d\u52a1\u66b4\u9732\u5230\u5916\u90e8\u7f51\u7edc\u7684\u65b9\u5f0f\uff0c\u5c5e\u4e8e\u00a0Service<\/strong>\u00a0\u8d44\u6e90\u7684\u4e00\u79cd\u7c7b\u578b\u3002\u5b83\u5141\u8bb8\u901a\u8fc7\u96c6\u7fa4\u4e2d\u4efb\u610f\u8282\u70b9\u7684\u56fa\u5b9a\u7aef\u53e3\uff0830000-32767\uff09\u8bbf\u95ee\u670d\u52a1\uff0c\u662f\u6700\u7b80\u5355\u7684\u5916\u90e8\u8bbf\u95ee\u65b9\u5f0f\u4e4b\u4e00\u3002<\/p>\n\n\n\n

\u4e00\u3001NodePort \u7684\u6838\u5fc3\u4f5c\u7528<\/strong><\/p>\n\n\n\n

\n\n\n\n
    \n
  1. \u5916\u90e8\u8bbf\u95ee\u5165\u53e3<\/strong>\n
      \n
    • \u5c06\u96c6\u7fa4\u5185\u90e8\u7684\u670d\u52a1\uff08\u5982 Web \u5e94\u7528\u3001API\uff09\u66b4\u9732\u5230\u96c6\u7fa4\u5916\u90e8\uff0c\u4f7f\u5916\u90e8\u5ba2\u6237\u7aef\uff08\u5982\u6d4f\u89c8\u5668\u3001\u5176\u4ed6\u670d\u52a1\u5668\uff09\u53ef\u4ee5\u901a\u8fc7\u8282\u70b9 IP \u548c NodePort \u8bbf\u95ee\u670d\u52a1\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
    • \u7b80\u5316\u670d\u52a1\u66b4\u9732<\/strong>\n
        \n
      • \u65e0\u9700\u4f9d\u8d56\u5916\u90e8\u8d1f\u8f7d\u5747\u8861\u5668\uff08\u5982\u4e91\u5382\u5546\u7684 Load Balancer\uff09\uff0c\u76f4\u63a5\u901a\u8fc7\u8282\u70b9 IP \u5373\u53ef\u8bbf\u95ee\uff0c\u9002\u7528\u4e8e\u6d4b\u8bd5\u73af\u5883\u6216\u8d44\u6e90\u6709\u9650\u7684\u573a\u666f\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
      • \u56fa\u5b9a\u7aef\u53e3\u5206\u914d<\/strong>\n
          \n
        • \u6bcf\u4e2a NodePort \u670d\u52a1\u4f1a\u88ab\u5206\u914d\u4e00\u4e2a\u552f\u4e00\u7684\u7aef\u53e3\uff08\u8303\u56f4\uff1a30000-32767\uff09\uff0c\u8be5\u7aef\u53e3\u5728\u96c6\u7fa4\u6240\u6709\u8282\u70b9\u4e0a\u4fdd\u6301\u4e00\u81f4\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n

          \u4e8c\u3001NodePort \u7684\u5de5\u4f5c\u539f\u7406<\/strong><\/p>\n\n\n\n

          \n\n\n\n
            \n
          1. Service \u8d44\u6e90\u521b\u5efa<\/strong>\n
              \n
            • \u5b9a\u4e49\u4e00\u4e2a\u00a0Service<\/code>\u00a0\u8d44\u6e90\uff0c\u5c06\u00a0type<\/code>\u00a0\u8bbe\u7f6e\u4e3a\u00a0NodePort<\/code>\uff0c\u5e76\u6307\u5b9a\u5185\u90e8\u7aef\u53e3\u548c\u76ee\u6807\u7aef\u53e3\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
            • \u8282\u70b9\u7aef\u53e3\u6620\u5c04<\/strong>\n
                \n
              • K8s \u4f1a\u5728\u96c6\u7fa4\u7684\u6bcf\u4e2a\u8282\u70b9\u4e0a\u6253\u5f00\u4e00\u4e2a\u56fa\u5b9a\u7aef\u53e3\uff08NodePort\uff09\uff0c\u5e76\u5c06\u8be5\u7aef\u53e3\u7684\u6d41\u91cf\u8f6c\u53d1\u5230\u5bf9\u5e94\u7684\u670d\u52a1\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
              • \u8d1f\u8f7d\u5747\u8861<\/strong>\n
                  \n
                • \u5f53\u5916\u90e8\u8bf7\u6c42\u8bbf\u95ee\u4efb\u610f\u8282\u70b9\u7684 NodePort \u65f6\uff0c\u8bf7\u6c42\u4f1a\u88ab\u8f6c\u53d1\u5230\u540e\u7aef\u7684 Pod \u96c6\u5408\uff08\u7531\u00a0selector<\/code>\u00a0\u5b9a\u4e49\uff09\uff0c\u5b9e\u73b0\u8d1f\u8f7d\u5747\u8861\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n

                  \u4e09\u3001NodePort \u914d\u7f6e\u793a\u4f8b<\/strong><\/p>\n\n\n\n

                  \n\n\n\n

                  \u4ee5\u4e0b\u662f\u4e00\u4e2a NodePort Service \u7684 YAML \u914d\u7f6e\u793a\u4f8b\uff1a<\/p>\n\n\n\n

                  apiVersion: v1\nkind: Service\nmetadata:\n  name: nginx-nodeport\n  labels:\n    app: nginx\nspec:\n  type: NodePort  # \u6307\u5b9a Service \u7c7b\u578b\u4e3a NodePort\n  ports:\n    - port: 80          # \u670d\u52a1\u7aef\u53e3\uff08\u96c6\u7fa4\u5185\u90e8\u8bbf\u95ee\uff09\n      targetPort: 80    # Pod \u7aef\u53e3\uff08\u5b9e\u9645\u5e94\u7528\u76d1\u542c\u7684\u7aef\u53e3\uff09\n      nodePort: 30080   # \u53ef\u9009\uff1a\u6307\u5b9a NodePort\uff08\u9ed8\u8ba4\u8303\u56f4 30000-32767\uff09\n  selector:\n    app: nginx  # \u5339\u914d\u5177\u6709\u76f8\u540c\u6807\u7b7e\u7684 Pod<\/pre>\n\n\n\n
                  \u521b\u5efa\u8be5 Service \u540e\uff1a<\/p>\n\n\n\n
                    \n
                  • \u96c6\u7fa4\u5185\u90e8\u53ef\u901a\u8fc7\u00a0nginx-nodeport:80<\/code>\u00a0\u8bbf\u95ee\u670d\u52a1\u3002<\/li>\n\n\n\n
                  • \u96c6\u7fa4\u5916\u90e8\u53ef\u901a\u8fc7\u4efb\u610f\u8282\u70b9\u7684 IP \u548c NodePort\uff08\u5982\u00a0http:\/\/<\u8282\u70b9IP>:30080<\/code>\uff09\u8bbf\u95ee\u670d\u52a1\u3002<\/li>\n<\/ul>\n\n\n\n
                    \u56db\u3001NodePort \u7684\u7279\u70b9<\/strong><\/p>\n\n\n\n
                    \n\n\n\n
                      \n
                    1. \u7aef\u53e3\u8303\u56f4\u9650\u5236<\/strong>\n
                        \n
                      • NodePort \u5fc5\u987b\u5728 30000-32767 \u8303\u56f4\u5185\uff0c\u82e5\u672a\u6307\u5b9a\uff0cK8s \u4f1a\u81ea\u52a8\u5206\u914d\u4e00\u4e2a\u53ef\u7528\u7aef\u53e3\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                      • \u8282\u70b9 IP \u4f9d\u8d56\u6027<\/strong>\n
                          \n
                        • \u5ba2\u6237\u7aef\u9700\u77e5\u9053\u8282\u70b9\u7684 IP \u5730\u5740\u624d\u80fd\u8bbf\u95ee\u670d\u52a1\uff0c\u9002\u7528\u4e8e\u8282\u70b9 IP \u56fa\u5b9a\u6216\u53ef\u901a\u8fc7 DNS \u89e3\u6790\u7684\u573a\u666f\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                        • \u591a\u8282\u70b9\u5197\u4f59<\/strong>\n
                            \n
                          • \u53ef\u901a\u8fc7\u4efb\u610f\u8282\u70b9\u7684 NodePort \u8bbf\u95ee\u670d\u52a1\uff0c\u5373\u4f7f\u67d0\u4e2a\u8282\u70b9\u6545\u969c\uff0c\u53ea\u8981\u96c6\u7fa4\u4e2d\u8fd8\u6709\u5b58\u6d3b\u8282\u70b9\uff0c\u670d\u52a1\u4ecd\u53ef\u8bbf\u95ee\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                          • \u5b89\u5168\u6027\u8003\u8651<\/strong>\n
                              \n
                            • NodePort \u76f4\u63a5\u66b4\u9732\u670d\u52a1\u5230\u8282\u70b9\uff0c\u9700\u786e\u4fdd\u8282\u70b9\u9632\u706b\u5899\u914d\u7f6e\u5b89\u5168\uff0c\u907f\u514d\u672a\u6388\u6743\u8bbf\u95ee\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n
                              \u4e94\u3001NodePort vs \u5176\u4ed6 Service \u7c7b\u578b<\/strong><\/p>\n\n\n\n
                              \n\n\n\n
                              Service \u7c7b\u578b<\/strong><\/th>\u5de5\u4f5c\u65b9\u5f0f<\/strong><\/th>\u9002\u7528\u573a\u666f<\/strong><\/th>\u5916\u90e8\u8bbf\u95ee\u65b9\u5f0f<\/strong><\/th><\/tr><\/thead>
                              ClusterIP<\/strong><\/td>\u9ed8\u8ba4\u7c7b\u578b\uff0c\u521b\u5efa\u96c6\u7fa4\u5185\u90e8\u53ef\u8bbf\u95ee\u7684\u865a\u62df IP\uff0c\u4ec5\u96c6\u7fa4\u5185\u90e8\u53ef\u8bbf\u95ee\u3002<\/td>\u96c6\u7fa4\u5185\u670d\u52a1\u95f4\u901a\u4fe1<\/td>\u65e0\u6cd5\u76f4\u63a5\u5916\u90e8\u8bbf\u95ee<\/td><\/tr>
                              NodePort<\/strong><\/td>\u5728\u6bcf\u4e2a\u8282\u70b9\u4e0a\u6253\u5f00\u56fa\u5b9a\u7aef\u53e3\uff0c\u5c06\u6d41\u91cf\u8f6c\u53d1\u5230\u670d\u52a1\u3002<\/td>\u6d4b\u8bd5\u73af\u5883\u3001\u7b80\u5355\u5916\u90e8\u8bbf\u95ee<\/td>http:\/\/<\u8282\u70b9IP>:<NodePort><\/code><\/td><\/tr>
                              LoadBalancer<\/strong><\/td>\u4f7f\u7528\u4e91\u5382\u5546\u7684\u8d1f\u8f7d\u5747\u8861\u5668\uff08\u5982 AWS ELB\u3001GCP Load Balancer\uff09\u81ea\u52a8\u5206\u914d\u5916\u90e8 IP\uff0c\u5e76\u5c06\u6d41\u91cf\u8f6c\u53d1\u5230\u670d\u52a1\u3002<\/td>\u751f\u4ea7\u73af\u5883\u3001\u9ad8\u53ef\u7528\u6027\u9700\u6c42<\/td>http:\/\/<\u5916\u90e8\u8d1f\u8f7d\u5747\u8861\u5668IP><\/code><\/td><\/tr>
                              ExternalName<\/strong><\/td>\u901a\u8fc7 CNAME \u8bb0\u5f55\u5c06\u670d\u52a1\u6620\u5c04\u5230\u5916\u90e8\u57df\u540d\uff08\u5982 db.example.com<\/code>\uff09\uff0c\u4e0d\u521b\u5efa\u4efb\u4f55\u4ee3\u7406\u6216\u8f6c\u53d1\u3002<\/td>\u8bbf\u95ee\u96c6\u7fa4\u5916\u670d\u52a1\uff08\u5982\u7b2c\u4e09\u65b9 API\uff09<\/td>\u76f4\u63a5\u901a\u8fc7\u57df\u540d\u8bbf\u95ee<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
                              \u516d\u3001NodePort \u7684\u4f7f\u7528\u573a\u666f<\/strong><\/p>\n\n\n\n
                              \n\n\n\n
                                \n
                              1. \u6d4b\u8bd5\u4e0e\u5f00\u53d1\u73af\u5883<\/strong>\n
                                  \n
                                • \u5feb\u901f\u9a8c\u8bc1\u670d\u52a1\u529f\u80fd\uff0c\u65e0\u9700\u590d\u6742\u7684\u8d1f\u8f7d\u5747\u8861\u914d\u7f6e\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                • \u5185\u90e8\u7f51\u7edc\u8bbf\u95ee<\/strong>\n
                                    \n
                                  • \u670d\u52a1\u4ec5\u9700\u5728\u4f01\u4e1a\u5185\u90e8\u7f51\u7edc\u66b4\u9732\uff0c\u53ef\u901a\u8fc7\u8282\u70b9 IP \u548c NodePort \u8bbf\u95ee\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                  • \u81ea\u5efa\u8d1f\u8f7d\u5747\u8861<\/strong>\n
                                      \n
                                    • \u5728\u6ca1\u6709\u4e91\u5382\u5546\u8d1f\u8f7d\u5747\u8861\u5668\u7684\u73af\u5883\u4e2d\uff0c\u53ef\u7ed3\u5408\u5916\u90e8\u8d1f\u8f7d\u5747\u8861\u5668\uff08\u5982 NGINX\u3001HAProxy\uff09\u4f7f\u7528 NodePort\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                    • \u4e34\u65f6\u670d\u52a1\u66b4\u9732<\/strong>\n
                                        \n
                                      • \u4e34\u65f6\u9700\u8981\u5bf9\u5916\u63d0\u4f9b\u670d\u52a1\uff0c\u65e0\u9700\u957f\u671f\u7ef4\u62a4\u590d\u6742\u7684\u66b4\u9732\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n
                                        \u4e03\u3001NodePort \u7684\u5c40\u9650\u6027<\/strong><\/p>\n\n\n\n
                                        \n\n\n\n
                                          \n
                                        1. \u7aef\u53e3\u7ba1\u7406\u590d\u6742<\/strong>\n
                                            \n
                                          • \u670d\u52a1\u8f83\u591a\u65f6\uff0c\u9700\u624b\u52a8\u7ba1\u7406 NodePort \u7aef\u53e3\u5206\u914d\uff0c\u907f\u514d\u51b2\u7a81\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                          • \u6269\u5c55\u6027\u6709\u9650<\/strong>\n
                                              \n
                                            • \u6bcf\u4e2a\u670d\u52a1\u9700\u5360\u7528\u4e00\u4e2a NodePort\uff0c\u7aef\u53e3\u8303\u56f4\uff0830000-32767\uff09\u6700\u591a\u652f\u6301\u7ea6 2767 \u4e2a\u670d\u52a1\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                            • \u5b89\u5168\u6027\u98ce\u9669<\/strong>\n
                                                \n
                                              • \u76f4\u63a5\u66b4\u9732\u8282\u70b9\u7aef\u53e3\uff0c\u589e\u52a0\u653b\u51fb\u9762\uff0c\u9700\u7ed3\u5408\u9632\u706b\u5899\u6216 NetworkPolicy \u9650\u5236\u8bbf\u95ee\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                              • \u5916\u90e8\u8d1f\u8f7d\u5747\u8861\u7f3a\u5931<\/strong>\n
                                                  \n
                                                • \u7f3a\u4e4f\u4e13\u4e1a\u8d1f\u8f7d\u5747\u8861\u5668\u7684\u9ad8\u7ea7\u529f\u80fd\uff08\u5982\u5065\u5eb7\u68c0\u67e5\u3001\u4f1a\u8bdd\u4eb2\u548c\u6027\u3001SSL \u7ec8\u6b62\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n
                                                  \u516b\u3001NodePort \u4e0e\u5176\u4ed6\u7ec4\u4ef6\u7ed3\u5408\u4f7f\u7528<\/strong><\/p>\n\n\n\n
                                                  \n\n\n\n
                                                    \n
                                                  1. \u4e0e Ingress \u7ed3\u5408<\/strong>\n
                                                      \n
                                                    • Ingress Controller \u672c\u8eab\u53ef\u901a\u8fc7 NodePort \u66b4\u9732\uff0c\u518d\u7531 Ingress \u89c4\u5219\u5c06\u6d41\u91cf\u8def\u7531\u5230\u4e0d\u540c\u670d\u52a1\uff0c\u5b9e\u73b0\u66f4\u7075\u6d3b\u7684\u8def\u7531\u548c\u8d1f\u8f7d\u5747\u8861\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                                    • \u4e0e\u5916\u90e8\u8d1f\u8f7d\u5747\u8861\u5668\u7ed3\u5408<\/strong>\n
                                                        \n
                                                      • \u5728\u81ea\u5efa\u73af\u5883\u4e2d\uff0c\u53ef\u4f7f\u7528\u5916\u90e8\u8d1f\u8f7d\u5747\u8861\u5668\uff08\u5982 HAProxy\uff09\u76d1\u542c NodePort\uff0c\u518d\u5c06\u6d41\u91cf\u5206\u53d1\u5230\u591a\u4e2a\u8282\u70b9\uff0c\u63d0\u5347\u53ef\u7528\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n
                                                        \u4e5d\u3001\u603b\u7ed3<\/strong><\/p>\n\n\n\n
                                                        \n\n\n\n
                                                        NodePort \u662f K8s \u4e2d\u6700\u7b80\u5355\u7684\u670d\u52a1\u66b4\u9732\u65b9\u5f0f\uff0c\u901a\u8fc7\u8282\u70b9\u56fa\u5b9a\u7aef\u53e3\u5c06\u670d\u52a1\u66b4\u9732\u5230\u5916\u90e8\u7f51\u7edc\u3002\u5b83\u9002\u7528\u4e8e\u6d4b\u8bd5\u3001\u5f00\u53d1\u6216\u5185\u90e8\u7f51\u7edc\u73af\u5883\uff0c\u4f46\u7531\u4e8e\u5176\u7aef\u53e3\u9650\u5236\u548c\u5b89\u5168\u6027\u8003\u8651\uff0c\u751f\u4ea7\u73af\u5883\u901a\u5e38\u63a8\u8350\u4f7f\u7528\u00a0LoadBalancer<\/strong>\u00a0\u6216\u00a0Ingress<\/strong>\u3002\u7406\u89e3 NodePort \u7684\u5de5\u4f5c\u539f\u7406\u548c\u9002\u7528\u573a\u666f\uff0c\u6709\u52a9\u4e8e\u5728\u4e0d\u540c\u73af\u5883\u4e2d\u9009\u62e9\u5408\u9002\u7684\u670d\u52a1\u66b4\u9732\u7b56\u7565\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
                                                        \u5728 Kubernetes\uff08K8s\uff09\u4e2d\uff0cNodePort\u00a0\u662f\u4e00\u79cd\u5c06\u96c6\u7fa4\u5185\u90e8\u670d\u52a1\u66b4\u9732\u5230\u5916\u90e8\u7f51\u7edc\u7684\u65b9\u5f0f\uff0c\u5c5e\u4e8e\u00a0Ser […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29],"tags":[],"_links":{"self":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/17434"}],"collection":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=17434"}],"version-history":[{"count":2,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/17434\/revisions"}],"predecessor-version":[{"id":19181,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/17434\/revisions\/19181"}],"wp:attachment":[{"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17434"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17434"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17434"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}