{"id":11958,"date":"2023-08-20T10:48:18","date_gmt":"2023-08-20T02:48:18","guid":{"rendered":"http:\/\/92it.top\/?p=11958"},"modified":"2023-08-21T21:50:15","modified_gmt":"2023-08-21T13:50:15","slug":"k8s%e6%b7%b1%e5%85%a5%e5%ad%a6%e4%b9%a0-rolling-update","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=11958","title":{"rendered":"K8S\u6df1\u5165\u5b66\u4e60 Rolling Update"},"content":{"rendered":"\n

\u8f6c\u8f7d\uff1ahttps:\/\/www.cnblogs.com\/edisonchou\/p\/aspnet_core_on_k8s_deepstudy_part5.html<\/a><\/p>\n\n\n\n

\u4e00\u3001\u4ec0\u4e48\u662fRolling Update\uff1f<\/strong><\/p>\n\n\n\n

\n\n\n\n

\u4e3a\u4e86\u670d\u52a1\u5347\u7ea7\u8fc7\u7a0b\u4e2d\u63d0\u4f9b\u53ef\u6301\u7eed\u7684\u4e0d\u4e2d\u65ad\u7684\u670d\u52a1\uff0cK8S\u63d0\u4f9b\u4e86Rolling Update\u673a\u5236\uff0c\u5b83\u53ef\u4ee5\u4f7f\u5f97\u670d\u52a1\u8fd1\u4e4e\u65e0\u7f1d\u5730\u5e73\u6ed1\u5347\u7ea7\uff0c\u5373\u5728\u4e0d\u505c\u6b62\u5bf9\u5916\u670d\u52a1\u7684\u524d\u63d0\u4e0b\u5b8c\u6210\u5e94\u7528\u7684\u66f4\u65b0\u3002\u6eda\u52a8\u66f4\u65b0\u91c7\u7528\u6e10\u8fdb\u7684\u65b9\u5f0f\u9010\u6b65\u66ff\u6362\u65e7\u7248\u672cPod\uff0c\u5982\u679c\u66f4\u65b0\u4e0d\u5982\u9884\u671f\uff0c\u90a3\u4e48\u4e5f\u53ef\u4ee5\u901a\u8fc7\u56de\u6eda\u64cd\u4f5c\u6062\u590d\u5230\u66f4\u65b0\u524d\u7684\u72b6\u6001\u3002<\/p>\n\n\n\n

\u6eda\u52a8\u66f4\u65b0\u7684\u6700\u5927\u597d\u5904\u5728\u4e8e\u96f6\u505c\u673a\uff0c\u6574\u4e2a\u66f4\u65b0\u8fc7\u7a0b\u59cb\u7ec8\u6709\u526f\u672c\u5728\u8fd0\u884c\uff0c\u4ece\u800c\u4fdd\u8bc1\u4e86\u4e1a\u52a1\u7684\u8fde\u7eed\u6027\u3002<\/pre>\n\n\n\n
 \u4e3a\u4e86\u5b9e\u8df5\u6eda\u52a8\u66f4\u65b0\uff0c\u6211\u4eec\u5148\u505a\u4e00\u4e9b\u51c6\u5907\u5de5\u4f5c\uff1a<\/p>\n\n\n\n
\uff081\uff09\u51c6\u5907\u4e00\u4e2aASP.NET Core WebAPI\u9879\u76ee\uff0c\u5177\u4f53\u9879\u76ee\u4ee3\u7801\u53c2\u89c1\u8fd9\u91cc<\/a>\u3002<\/p>\n\n\n\n
\u9879\u76ee\u4ee3\u7801\u91cc\u8fb9\u6709\u4e09\u4e2a\u7248\u672c\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u4ed6\u4eec\u4e4b\u95f4\u7684\u5dee\u522b\u5728\u4e8e\u4e00\u4e2a\u63a5\u53e3\u7684\u8fd4\u56deJSON\u6570\u636e\uff0c\u6bd4\u5982V1.0\u7248\u672c\u4e2d\u8fd4\u56de\u7684\u662fVersion: 1.0\uff0c\u800cV1.1\u7248\u672c\u4e2d\u8fd4\u56de\u7684\u662fVersion\uff1a1.1\uff0c\u90a3\u4e48V1.2\u7248\u672c\u5219\u662f\u8fd4\u56deVersioin\uff1a1.2\u3002<\/p>\n\n\n\n
[Route(\"api\/[controller]\")]\n    [ApiController]\n    public class HomeController : ControllerBase\n    {\n        \/\/ GET api\/home\n        [HttpGet]\n        public ActionResult<IEnumerable<string>> Get()\n        {\n            return new string[] {\n                \"Hello, welcome to EDC's demo. Version: 1.0\"\n            };\n        }\n    }<\/pre>\n\n\n\n
\uff082\uff09\u5c06\u6b64\u9879\u76ee\u5404\u4e2a\u7248\u672c\u6839\u636eDockerfile\u6253\u6210\u955c\u50cf\uff0c\u5206\u522b\u662fk8s-demo:1.0,1.1,1.2<\/p>\n\n\n\n
\uff083\uff09\u5c06\u672c\u5730\u955c\u50cfpush\u5230\u8fdc\u7a0b\u955c\u50cf\u4ed3\u5e93\uff0c\u8fd9\u91cc\u6211\u4f20\u9001\u5230\u4e86docker hub\u7684\u4e00\u4e2a\u516c\u5171\u4ed3\u5e93\u91cc\u8fb9\uff1a<\/p>\n\n\n\n
docker push edisonsaonian\/k8s-demo:1.0\ndocker push edisonsaonian\/k8s-demo:1.1\ndocker push edisonsaonian\/k8s-demo:1.2<\/pre>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u4e8c\u3001\u66f4\u65b0\u5b9e\u8df5<\/strong><\/p>\n\n\n\n
\n\n\n\n
\u9996\u5148\uff0c\u6211\u4eec\u5148\u521b\u5efa\u4e00\u4e2a1.0\u7248\u672c\u5230K8S\u4e2d\uff0c\u51c6\u5907YAML\u914d\u7f6e\u6587\u4ef6\uff08\u8fd9\u6b21\u6211\u4eec\u5c06Deployment\u548cService\u7684\u8d44\u6e90\u5b9a\u4e49\u5199\u5728\u4e86\u4e00\u8d77\uff09\uff1a<\/p>\n\n\n\n
apiVersion: apps\/v1\nkind: Deployment\nmetadata:\n  name: edc-webapi-deployment\n  namespace: aspnetcore\nspec:\n  replicas: 2\n  selector:\n    matchLabels:\n      name: edc-webapi\n  template:\n    metadata:\n      labels:\n        name: edc-webapi\n    spec:\n      containers:\n      - name: edc-webapi-container\n        image: edisonsaonian\/k8s-demo:1.0\n        ports:\n        - containerPort: 80\n        imagePullPolicy: IfNotPresent\n\n---\n\napiVersion: v1\nkind: Service\nmetadata:\n  name: edc-webapi-service\n  namespace: aspnetcore\nspec:\n  type: NodePort\n  ports:\n    - nodePort: 31000 \n      port: 8080\n      targetPort: 80\n  selector:\n    name: edc-webapi<\/pre>\n\n\n\n
\u7136\u540e\uff0c\u901a\u8fc7kubectl\u8fdb\u884c\u521b\u5efa\uff1a<\/p>\n\n\n\n
kubectl apply -f k8s-demo.yaml<\/pre>\n\n\n\n
\u901a\u8fc7kubectl\u8fdb\u884c\u9a8c\u8bc1\uff1a<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u901a\u8fc7\u5916\u90e8\u8bbf\u95ee\u63a5\u53e3\u9a8c\u8bc1\uff1a<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u5047\u8bbe1.0\u7248\u672c\u8fd0\u884c\u4e86\u4e00\u6bb5\u65f6\u95f4\uff0c\u6211\u4eec\u53c8\u505a\u4e86\u4e00\u4e9b\u4f18\u5316\u51c6\u5907\u53d1\u5e031.1\u7248\u672c\uff0c\u90a3\u4e48\u8fd9\u65f6\u6211\u4eec\u53ef\u4ee5\u501f\u52a9Rolling Update\u8fdb\u884c\u6eda\u52a8\u66f4\u65b0\uff0c\u53ea\u9700\u8981\u4fee\u6539\u4e00\u4e0bYAML\u914d\u7f6e\u6587\u4ef6\uff1a\u5c06\u955c\u50cf\u7248\u672c\u7684Tag\u66f4\u6539\u4e3a1.1\u5373\u53ef\u3002<\/p>\n\n\n\n
apiVersion: apps\/v1\nkind: Deployment\nmetadata:\n  name: edc-webapi-deployment\n  namespace: aspnetcore\nspec:\n  replicas: 2\n  selector:\n    matchLabels:\n      name: edc-webapi\n  template:\n    metadata:\n      labels:\n        name: edc-webapi\n    spec:\n      containers:\n      - name: edc-webapi-container\n        image: edisonsaonian\/k8s-demo:1.1\n        ports:\n        - containerPort: 80\n        imagePullPolicy: IfNotPresent<\/pre>\n\n\n\n
\u540c\u6837\uff0c\u518d\u6b21\u901a\u8fc7kubectl\u8fdb\u884c\u521b\u5efa\u5373\u53ef\u5b8c\u6210\u5b9e\u65f6\u66f4\u65b0\uff1a<\/p>\n\n\n\n
kubectl apply -f k8s-demo.yaml<\/pre>\n\n\n\n
\u518d\u6b21\u9a8c\u8bc1\u4e00\u4e0b\uff1a\u955c\u50cf\u5df2\u7ecf\u53d8\u6210\u4e861.1<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u901a\u8fc7\u5916\u90e8\u63a5\u53e3\u8bbf\u95ee\uff0c\u8fd4\u56de\u6570\u636e\u4e5f\u5df2\u7ecf\u66f4\u65b0\uff1a<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u6309\u7167\u4e0a\u9762\u7684\u6b65\u9aa4\uff0c\u6211\u4eec\u518d\u6b21\u66f4\u65b0\u52301.2\uff0c\u6700\u540e\u7684\u6548\u679c\u5982\u4e0b\uff1a<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u4e09\u3001\u56de\u6eda\u5b9e\u8df5<\/strong><\/p>\n\n\n\n
\n\n\n\n
\u5f53\u6211\u4eec\u901a\u8fc7kubectl\u6bcf\u6b21\u66f4\u65b0\u5e94\u7528\u65f6\uff0cK8S\u90fd\u4f1a\u8bb0\u5f55\u4e0b\u5f53\u524d\u7684\u914d\u7f6e\uff0c\u4fdd\u5b58\u4e3a\u4e00\u4e2arevision\uff08\u7248\u6b21\uff09\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u56de\u6eda\u5230\u67d0\u4e2a\u7279\u5b9a\u7684revision\u3002\u56de\u60f3\u4e00\u4e0b\uff0c\u6211\u4eec\u5728\u7248\u672c\u7ba1\u7406\u5de5\u5177\u7c7b\u4f3c\u4e8eSVN\uff0cGit\u4e2d\uff0c\u90fd\u53ef\u4ee5\u65b9\u4fbf\u7684\u56de\u6eda\u5230\u4e4b\u524d\u7684\u67d0\u4e2arevision\u4e2d\u3002<\/p>\n\n\n\n
\u9ed8\u8ba4\u914d\u7f6e\u4e0b\uff0cK8S\u53ea\u4f1a\u4fdd\u7559\u6700\u8fd1\u7684\u51e0\u4e2arevision\uff0c\u53ef\u4ee5\u5728Deployment\u914d\u7f6e\u6587\u4ef6\u4e2d\u901a\u8fc7revisionHistoryLimit\u5c5e\u6027\u589e\u52a0revision\u6570\u91cf\u3002\u4f8b\u5982\u4e0b\u9762\u7684\u4f8b\u5b50\uff0c\u5c06revision\u6570\u91cf\u8bbe\u7f6e\u4e3a10\uff1a<\/p>\n\n\n\n
apiVersion: apps\/v1\nkind: Deployment\nmetadata:\n  name: edc-webapi-deployment\n  namespace: aspnetcore\nspec:\n  revisionHistoryLimit: 10\n  ......<\/pre>\n\n\n\n
\u4e0b\u9762\uff0c\u4ee5\u4e0a\u9762\u7684\u793a\u4f8b\u4e3a\u4f8b\uff0c\u6211\u4eec\u53d1\u73b0V1.2\u7248\u672c\u4e2d\u5b58\u5728\u67d0\u4e9bbug\uff0c\u9700\u8981\u56de\u9000\u5230\u4e0a\u4e00\u4e2aV1.1\u7248\u672c\uff1a<\/p>\n\n\n\n
kubectl rollout undo deployment edc-webapi-deployment -n aspnetcore\n<\/pre>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u901a\u8fc7\u5916\u90e8\u8bbf\u95ee\u63a5\u53e3\u9a8c\u8bc1\u4e00\u4e0b\uff1a\u5df2\u7ecf\u56de\u9000\u5230\u4e861.1\u4e86\u3002<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u5982\u679c\u60f3\u8981\u56de\u9000\u5230\u66f4\u8fdc\u7684\u8001\u7248\u672c\u5462\uff1f\u8fd9\u65f6\uff0c\u5c31\u9700\u8981\u501f\u52a9–record\u547d\u4ee4\u4e86\u3002\u600e\u4e48\u5f04\u5462\uff1f\u4e0b\u9762\u6162\u6162\u9053\u6765\uff1a<\/p>\n\n\n\n
\uff081\uff09\u51c6\u5907\u4e09\u4e2aYAML\u914d\u7f6e\u6587\u4ef6\uff0c\u5206\u522b\u662f\uff1ak8s-demo-v1.0.yaml\uff0ck8s-demo-v1.1.yaml\u53cak8s-demo-v1.2.yaml\u3002<\/p>\n\n\n\n
\uff082\uff09\u901a\u8fc7kubectl apply\u90e8\u7f72\u5e76\u66f4\u65b0\u5e94\u7528\uff0c\u9700\u8981\u6ce8\u610f\u7684\u5c31\u662f\u52a0\u4e0a –record\u3002<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u52a0\u4e0a–record\u7684\u4f5c\u7528\u5728\u4e8e\u5c06\u5f53\u524d\u547d\u4ee4\u8bb0\u5f55\u5230revision\uff08\u7248\u6b21\uff09\u8bb0\u5f55\u4e2d\uff0c\u8fd9\u6837\u53ef\u4ee5\u65b9\u4fbf\u6211\u4eec\u5728\u540e\u9762\u901a\u8fc7kubectl rollback\u65f6\u53bb\u6307\u5b9arevision\u3002\u6211\u4eec\u4e5f\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u53bb\u67e5\u770b\u5404\u4e2arevision\u7684\u8bb0\u5f55\uff1a<\/p>\n\n\n\n
kubectl rollout history deployment edc-webapi-deployment -n aspnetcore<\/pre>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u8fd9\u91cc\u53ef\u4ee5\u901a\u8fc7CHANGE-CAUSE\u770b\u5230\u6bcf\u4e2arevision\u7684\u5177\u4f53\u542b\u4e49\uff0c\u524d\u63d0\u6761\u4ef6\u5c31\u662f\u9700\u8981\u5728kubectl apply\u65f6\u52a0\u4e0a–record\u53c2\u6570<\/strong>\u3002<\/p>\n\n\n\n
\uff083\uff09\u8fd9\u65f6\u6211\u4eec\u518d\u8fdb\u884crollback\u65f6\uff0c\u53ef\u4ee5\u6307\u5b9a\u5177\u4f53revision\u53f7\u4e86\uff1a<\/p>\n\n\n\n
kubectl rollout undo deployment edc-webapi-deployment --to-revision=1 -n aspnetcore<\/pre>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u9a8c\u8bc1\u4e00\u4e0b\u662f\u5426\u56de\u9000\u5230\u4e861.0\u7248\u672c\uff1a<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u53ef\u4ee5\u770b\u5230\uff0c\u5df2\u7ecf\u4ece1.2\u56de\u9000\u5230\u4e861.0\u7248\u672c\uff0c\u7b26\u5408\u9884\u671f\uff01<\/p>\n\n\n\n
\u56db\u3001Rolling Update\u539f\u7406<\/strong><\/p>\n\n\n\n
\n\n\n\n
K8S\u4e2d\u5bf9\u4e8e\u66f4Rolling Update\u7684\u64cd\u4f5c\u4e3b\u8981\u662f\u9488\u5bf9ReplicaSet\u7684\u64cd\u4f5c\uff0c\u53ef\u4ee5\u901a\u8fc7\u5982\u4e0b\u547d\u4ee4\u67e5\u770b\u9a8c\u8bc1\uff1a<\/p>\n\n\n\n
kubectl get replicaset -n aspnetcore -o wide\n<\/pre>\n\n\n\n
\u53ef\u4ee5\u770b\u52301.0\u7684ReplicaSet edc-webapi-deployment-75977bbfdc\u521b\u5efa\u4e4b\u540e\u7136\u540e\u88ab\u6e05\u7406\u4e86\uff0c\u5df2\u7ecf\u6ca1\u6709\u6b63\u5728\u8fd0\u884c\u7684Pod\u4e86\u3002\u8f6c\u800c\u521b\u5efa\u4e86\u65b0\u7684ReplicaSet edc-webapi-deployment-797dd9b8f8\uff0c\u5b83\u6709\u4e24\u4e2a\u6b63\u5728\u8fd0\u884c\u7684Pod\u3002<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u5177\u4f53\u8fc7\u7a0b\u6211\u4eec\u8fd8\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\uff1a<\/p>\n\n\n\n
kubectl describe deployment edc-webapi-deployment -n aspnetcore<\/pre>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u00a0\u901a\u8fc7\u65e5\u5fd7\u53ef\u4ee5\u770b\u5230\uff0c\u5728\u8fdb\u884c\u5bf9ReplicaSet\u7684\u4f38\u7f29\u8fc7\u7a0b\u4e2d\uff0cReplicaSet\u4f1a\u968f\u4e4b\u589e\u52a0\u6216\u51cf\u5c11\u4e00\u4e2aPod\uff0c\u4ece\u800c\u5b8c\u6210Pod\u7684\u66ff\u6362\u4ee5\u5b9e\u73b0\u6eda\u52a8\u66f4\u65b0\u7684\u7ed3\u679c\u3002<\/p>\n\n\n\n
\u4e94\u3001\u5c0f\u7ed3<\/strong><\/p>\n\n\n\n
\n\n\n\n
\u6eda\u52a8\u66f4\u65b0\u7684\u6700\u5927\u597d\u5904\u5728\u4e8e\u96f6\u505c\u673a<\/strong>\uff0c\u6574\u4e2a\u66f4\u65b0\u8fc7\u7a0b\u59cb\u7ec8\u6709\u526f\u672c\u5728\u8fd0\u884c\uff0c\u4ece\u800c\u4fdd\u8bc1\u4e86\u4e1a\u52a1\u7684\u8fde\u7eed\u6027\u3002\u672c\u6587\u4ecb\u7ecd\u4e86\u6eda\u52a8\u66f4\u65b0\u7684\u6982\u5ff5\uff0c\u7136\u540e\u901a\u8fc7\u66f4\u65b0\u548c\u56de\u6eda\u4e00\u4e2aASP.NET Core\u5e94\u7528\u6f14\u793a\u4e86\u5982\u4f55\u5728K8S\u4e2d\u8fdb\u884c\u6eda\u52a8\u66f4\u65b0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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