{"id":2712,"date":"2023-03-04T08:00:00","date_gmt":"2023-03-04T00:00:00","guid":{"rendered":"https:\/\/jovepater.com\/?p=2712"},"modified":"2023-04-08T01:31:08","modified_gmt":"2023-04-07T17:31:08","slug":"for-k8s-beginner-ep-9-kubernetes-service","status":"publish","type":"post","link":"https:\/\/jovepater.com\/article\/for-k8s-beginner-ep-9-kubernetes-service\/","title":{"rendered":"For K8S Beginner EP 9\uff1a\u90e8\u7f72Kubernetes Service\u4f86\u63d0\u4f9b\u670d\u52d9"},"content":{"rendered":"\n

\u524d\u8a00<\/strong><\/h2>\n\n\n\n

\u6b64\u524d\uff0c\u5df2\u7d93\u91dd\u5c0dPod\u7684\u7ba1\u7406\u505a\u4e86\u8aaa\u660e\uff0c\u5305\u62ec\u4f7f\u7528ReplicaSet\u4f86\u5efa\u7acb\u4e00\u7d44Pod\uff0c\u4f7f\u7528Deployment\u4f86\u7ba1\u7406ReplicaSet\u90e8\u7f72\u7248\u672c\uff0c\u4f46\u4ecd\u7121\u6cd5\u63d0\u4f9b\u670d\u52d9\uff0c\u9700\u8981\u4e00\u500b\u7d44\u4ef6\u5354\u52a9\u9019\u7fa4Pod\u4f86\u63d0\u4f9b“\u670d\u52d9”<\/strong>\uff0c\u5728Kubernetes\u4e2d\uff0c\u6709\u4e00\u7a2e\u8cc7\u6e90\u53eb”Service”\uff0c\u5b83\u8ca0\u8cac\u8b93\u4e00\u7fa4\u76f8\u540cPod\u63d0\u4f9b\u670d\u52d9\u7d66\u5ba2\u6236\u7aef\u4f7f\u7528\uff0c\u900f\u904e\u4e0d\u540c\u7684\u8a2d\u5b9a\uff0c\u53ef\u4ee5\u662fKubernetes\u5167\u90e8\u6216\u662f\u5916\u90e8\u7684\u5ba2\u6236\u7aef\u3002<\/p>\n\n\n\n

\u901a\u5e38\uff0c\u8b1bKubernetes Service\u524d\u8981\u5148\u4e86\u89e3Kubernetes\u7684\u7db2\u8def\u67b6\u69cb\uff0c\u4f46\u9019\u88e1\u7279\u5225\u5148\u8b1bKubernetes Service\u518d\u8aaa\u660e\u7db2\u8def\u67b6\u69cb\uff0c\u56e0\u70ba\u8f38\u51fa\u670d\u52d9\u662f\u5c0d\u958b\u767c\u8005\u6700\u91cd\u8981\u7684\u4e8b\u60c5\uff0c\u7c21\u55ae\u8aaa\uff0c\u5148\u628a\u9aa8\u67b6\u3001\u91cd\u8981\u81df\u5668\u641e\u61c2\uff0c\u518d\u7814\u7a76\u5faa\u74b0\u7cfb\u7d71\uff01<\/p>\n\n\n\n

Kubernetes Service\u5b98\u65b9\u8aaa\u660e\uff1aLink<\/a><\/p>\n\n\n\n

Kubernetes Service<\/strong><\/h2>\n\n\n\n

Kubernetes Service\u662f\u4e00\u500b\u628a\u670d\u52d9\u62bd\u8c61\u5316\u7684\u8cc7\u6e90\u985e\u578b\uff0c\u5b83\u628a\u4e00\u7fa4\u76f8\u540cPod\u6346\u5728\u4e00\u8d77\uff0c\u4ee5\u7d71\u4e00\u7684IP\u6216DNS\u540d\u7a31\u4f5c\u70ba\u5c0d\u5916\u670d\u52d9\u7684\u5165\u53e3\uff0c\u4e26\u4e14\u63d0\u4f9b\u8ca0\u8f09\u5e73\u8861\u7684\u529f\u80fd\uff0c\u6709\u9ede\u50cf\u662fF5 Load Balancer\u3002<\/p>\n\n\n

\n
\"Kubernetes<\/figure><\/div>\n\n\n

\u5f9e\u4e0a\u5716\u53ef\u4ee5\u767c\u73fe\uff0cKubernetes Service\u8207Deployment\u3001ReplicaSet\u662f\u4e0d\u540c\u5c64\u6b21\u4f46\u537b\u53ef\u4ee5\u540c\u6642\u5b58\u5728\u7684\u4e00\u7a2e\u8cc7\u6e90\u985e\u578b\uff0c\u524d\u8005\u4e3b\u8981\u63d0\u4f9b\u61c9\u7528\u670d\u52d9\uff0c\u5f8c\u5169\u8005\u63d0\u4f9b\u7ba1\u7406\u529f\u80fd\u3002<\/p>\n\n\n\n

Kubernetes Service\u4f7f\u7528\u76f8\u540cLabel (\u6a19\u7c64)\u4f86\u5321\u4f4fPod\uff0c\u4e26\u7528Port\u5c0d\u63a5\u8207Pod\u4e4b\u9593\u7684\u901a\u8a0a\uff0c\u5982\u4e0b\u5716\uff1a<\/p>\n\n\n

\n
\"Kubernetes<\/figure><\/div>\n\n\n

\u90e8\u7f72Kubernetes Service<\/strong><\/h2>\n\n\n\n

\u672c\u7bc7\u90e8\u7f72\u7bc4\u4f8b\u4ee5\u4e0b\u5716\u70ba\u76ee\u6a19\uff1a<\/p>\n\n\n

\n
\"kubectl<\/figure><\/div>\n\n\n

\u6ce8\u610f\uff1a<\/strong>\u672c\u7bc7\u6240\u90e8\u7f72\u7684\u7bc4\u4f8b\uff0c\u53ea\u80fd\u63d0\u4f9bKubernetes\u5167\u5b58\u53d6\uff0c\u7121\u6cd5\u63d0\u4f9bKubernetes\u74b0\u5883\u4ee5\u5916\u7684\u670d\u52d9\u5b58\u53d6\uff1b\u82e5\u8981\u5c0d\u5916\uff0c\u5f8c\u9762\u8b1b\u8ff0\u7db2\u8def\u67b6\u69cb\u7684\u6642\u5019\u6703\u63d0\u5230\uff0c\u5c46\u6642\u5c07\u518d\u8a73\u8ff0\u4e00\u6b21\uff0c\u4e26\u5be6\u969b\u64cd\u4f5c\u4e00\u6b21\uff01<\/p>\n\n\n\n

\u6b65\u9a5f1\uff1a<\/strong>\u5275\u5efaDeployment\uff0c\u53c3\u8003\u524d\u7bc7\u3010For K8S Beginner EP 8\uff1a\u90e8\u7f72Kubernetes Deployment\uff0c\u4e26\u4f7f\u7528\u7248\u672c\u7ba1\u7406\u8207\u56de\u6efe\u6a5f\u5236<\/a>\u3011\uff0c\u8abf\u6574\u4e00\u4e0bYAML\u5167\u5bb9\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n

\napiVersion: apps\/v1\nkind: Deployment\nmetadata:\n  name: nginx-server-deployment\n  labels:\n    app: frontend\n    env: production\nspec:\n  selector:\n    matchLabels:\n      app: frontend\n  replicas: 2\n  template:\n    metadata:\n      name: nginx-server\n      labels:\n        app: frontend\n    spec:\n      containers:\n        - name: nginx-server\n          image: nginx\n          ports:                                # \u589e\u52a0ports\u7bc0\u9ede\uff0c\u7528\u65bc\u63cf\u8ff0\u9019\u500bPod\u63d0\u4f9b\u7684Port\u6709\u54ea\u4e9b\n            - containerPort: 80                 # \u6307\u5b9a\u9019\u500bPod\u63d0\u4f9b80 Port\u4f5c\u70ba\u901a\u8a0a\u4f7f\u7528\n<\/pre><\/div>\n\n\n
\u6b65\u9a5f2\uff1a<\/strong>\u5275\u5efa\u4e00\u500bservice.yaml\u6a94\u6848\uff0c\u7528\u65bc\u5efa\u7acbKubernetes Service\u8cc7\u6e90\u4f7f\u7528\uff0c\u5167\u5bb9\u5982\u4e0b\uff1a<\/p>\n\n\n
\napiVersion: v1\nkind: Service\nmetadata:\n  name: nginx-service\nspec:\n  selector:                                     # \u900f\u904eselector\u6307\u5b9a\u8981\u5c0d\u61c9\u7684Pod\n    app: frontend                               # \u6307\u5b9alabel (\u6a19\u7c64)\u662fapp=frontend\u7684Pod\n  ports:\n  - name: nginx-service-port                    # \u7d66\u9019\u500b\u5c0d\u5916\u63d0\u4f9b\u670d\u52d9\u4e00\u500bDNS\u540d\u7a31\n    port: 80                                    # Service\u7684Port\n    targetPort: 80                              # \u76ee\u6a19Pod\u7684Port\n<\/pre><\/div>\n\n\n
\u6b65\u9a5f3\uff1a<\/strong>\u4f7f\u7528kubectl create\u6307\u4ee4\u4f86\u5efa\u7acb\u4e26\u555f\u52d5Deployment\u8207Service\u3002<\/p>\n\n\n\n
$ kubectl create -f deployment.yaml\n$ kubectl create -f service.yaml<\/code><\/pre>\n\n\n\n
\u6b65\u9a5f4\uff1a<\/strong>\u4f7f\u7528kubectl get all\u6307\u4ee4\u89c0\u5bdf\u555f\u52d5\u7d50\u679c\u3002<\/p>\n\n\n
\nNAME                                           READY   STATUS    RESTARTS   AGE\npod\/nginx-server-deployment-66c88b758b-jdqgw   1\/1     Running   0          28m\npod\/nginx-server-deployment-66c88b758b-w5bdf   1\/1     Running   0          28m\n\n# \u591a\u4e00\u500bnginx-service\u7684Kubernetes Service\u8cc7\u6e90\nNAME                    TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)   AGE\nservice\/kubernetes      ClusterIP   10.96.0.1        <none>        443\/TCP   7d\nservice\/nginx-service   ClusterIP   10.109.101.171   <none>        80\/TCP    29m\n\nNAME                                      READY   UP-TO-DATE   AVAILABLE   AGE\ndeployment.apps\/nginx-server-deployment   2\/2     2            2           33m\n\nNAME                                                 DESIRED   CURRENT   READY   AGE\nreplicaset.apps\/nginx-server-deployment-66c88b758b   2         2         2       33m\n<\/pre><\/div>\n\n\n
\u6b65\u9a5f5\uff1a<\/strong>\u4f7f\u7528kubectl describe\u4f86\u89c0\u5bdfService\u7684\u7d30\u7bc0\u3002<\/p>\n\n\n\n
$ kubectl describe service nginx-service<\/code><\/pre>\n\n\n
\nName:              nginx-service\nNamespace:         default\nLabels:            <none>\nAnnotations:       <none>\n# \u5c07Service\u5c0d\u61c9\u5230\u4e00\u6a23\u64c1\u6709app=frontend\u6a19\u7c64\u7684Pod\nSelector:          app=frontend\nType:              ClusterIP\nIP Family Policy:  SingleStack\nIP Families:       IPv4\nIP:                10.109.101.171\nIPs:               10.109.101.171\n# \u5728Kubernetes\u74b0\u5883\u5167\uff0c\u53ef\u4ee5\u900f\u904eDNS\u540d\u7a31\u4f86\u5b58\u53d6\u9019\u500b\u670d\u52d9\nPort:              nginx-service-port  80\/TCP\n# Pod\u7684Port\u662f80\nTargetPort:        80\/TCP\n# \u5217\u51fa\u5c0d\u61c9\u5230\u7684Pod\u7684IP\u4ee5\u53caPort\nEndpoints:         172.17.0.4:80,172.17.0.5:80\nSession Affinity:  None\nEvents:            <none>\n<\/pre><\/div>\n\n\n
\u900f\u904eMinikube\u700f\u89bd\u670d\u52d9(Nginx)\u9801\u9762<\/strong><\/h2>\n\n\n\n
\u56e0\u70baMinikube\u662fLab\u74b0\u5883\uff0c\u7121\u6cd5\u76f4\u63a5\u63d0\u4f9b\u670d\u52d9\uff0c\u53ef\u4ee5\u900f\u904eMinikube\u63d0\u4f9b\u7684\u7db2\u8def\u7e5e\u9001\u65b9\u5f0f\u89e3\u6c7a\u9019\u500b\u554f\u984c\uff0c\u5176\u5be6\u975e\u5e38\u7c21\u55ae\uff0c\u53ea\u67092\u500b\u6b65\u9a5f\uff1a<\/p>\n\n\n\n
\u6b65\u9a5f1\uff1a<\/strong>\u4f7f\u7528minukube service\u6307\u4ee4\u7372\u5f97\u5b58\u53d6\u7684\u7db2\u5740\uff0c\u6307\u4ee4\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n\n\n\n
minikube service [\u670d\u52d9\u540d\u7a31] --url<\/code><\/pre>\n\n\n\n
\u672c\u7bc7\u5be6\u969b\u6307\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n
$ minikube service nginx-service --url<\/code><\/pre>\n\n\n\n
\u8b93Minikube\u8dd1\u4e00\u4e0b\uff0c\u6703\u63d0\u793a\u5982\u4e0b\u8cc7\u8a0a\uff1a<\/p>\n\n\n
\n
\"Minikube<\/figure><\/div>\n\n
\n# \u4e0d\u7528\u7406\u6703\u9019\u500b\u544a\u8b66\uff0c\u5f8c\u9762\u7684\u7ae0\u7bc0\u6703\u8aaa\u660eNode Port\u7684\u7528\u9014\u53ca\u8a2d\u5b9a\n! service default\/nginx-service has no node port\n# \u4e0b\u9762\u5c31\u662f\u53ef\u4ee5\u5b58\u53d6\u670d\u52d9\u7684\u7db2\u5740\uff0cMinikube\u6703\u5e6b\u5fd9\u628a\u7db2\u8def\u7e5e\u9001\u9032\u53bb\nhttp:\/\/127.0.0.1:50800\n# \u70ba\u4ec0\u9ebc\u9700\u8981\u7e5e\u9001\uff0c\u9019\u500b\u8aaa\u660e\u975e\u5e38\u6e05\u695a\uff0c\u4e3b\u56e0\u662f\u900f\u904eDocker\u6a21\u64ec\u7684\u95dc\u4fc2\uff0c\u4f46\u9019\u4e26\u4e0d\u5f71\u97ff\u7df4\u7fd2\u5594\uff01\n! Because you are using a Docker driver on darwin, the terminal needs to be open to run it.\n<\/pre><\/div>\n\n\n
\u6b65\u9a5f2\uff1a<\/strong>\u958b\u555f\u700f\u89bd\u5668\uff0c\u9023\u5230\u4e0a\u8ff0\u7684\u7db2\u5740 (\u672c\u7bc7\u7bc4\u4f8b\u662fhttp:\/\/127.0.0.1:50800)\uff0c\u5c31\u53ef\u4ee5\u770b\u5230Nginx\u7684\u9996\u9801\u9810\u8a2d\u756b\u9762\u56c9\uff01<\/p>\n\n\n
\n
\"Kubernetes<\/figure><\/div>\n\n\n
~ END ~<\/p>\n\n\n\n
\n\n\n\n
< For K8S Beginner EP 8\uff1a\u90e8\u7f72Kubernetes Deployment\uff0c\u4e26\u4f7f\u7528\u7248\u672c\u7ba1\u7406\u8207\u56de\u6efe\u6a5f\u5236<\/a><\/td>For K8S Beginner EP 10\uff1aKubernetes Network \u7db2\u8def\u67b6\u69cb<\/a> ><\/td><\/tr><\/tbody><\/table><\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"
Kubernetes Service\u662f\u8b93Pod\u670d\u52d9\u5c0d\u5916\u516c\u958b\u7684\u91cd\u8981\u7d44\u4ef6\uff0c\u4e5f\u662f\u9664\u4e86Pod\u3001ReplicaSet\u3001Deployment\u5916\u7b2c\u56db\u7a2eKubernetes\u8cc7\u6e90\u985e\u578b\uff0c\u4e86\u89e3\u5b83\uff0c\u4e5f\u5c31\u9054\u6210\u5b78\u7fd2\u57fa\u790e\u77e5\u8b58\u7684\u91cd\u8981\u968e\u6bb5\uff01<\/p>\n","protected":false},"author":2,"featured_media":2733,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[191],"tags":[116,201],"_links":{"self":[{"href":"https:\/\/jovepater.com\/wp-json\/wp\/v2\/posts\/2712"}],"collection":[{"href":"https:\/\/jovepater.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jovepater.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jovepater.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/jovepater.com\/wp-json\/wp\/v2\/comments?post=2712"}],"version-history":[{"count":24,"href":"https:\/\/jovepater.com\/wp-json\/wp\/v2\/posts\/2712\/revisions"}],"predecessor-version":[{"id":2932,"href":"https:\/\/jovepater.com\/wp-json\/wp\/v2\/posts\/2712\/revisions\/2932"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jovepater.com\/wp-json\/wp\/v2\/media\/2733"}],"wp:attachment":[{"href":"https:\/\/jovepater.com\/wp-json\/wp\/v2\/media?parent=2712"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jovepater.com\/wp-json\/wp\/v2\/categories?post=2712"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jovepater.com\/wp-json\/wp\/v2\/tags?post=2712"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}