{"id":2708,"date":"2023-02-18T20:00:00","date_gmt":"2023-02-18T12:00:00","guid":{"rendered":"https:\/\/jovepater.com\/?p=2708"},"modified":"2023-02-26T17:53:54","modified_gmt":"2023-02-26T09:53:54","slug":"for-k8s-beginner-ep-7-kubernetes-replicaset","status":"publish","type":"post","link":"https:\/\/jovepater.com\/article\/for-k8s-beginner-ep-7-kubernetes-replicaset\/","title":{"rendered":"For K8S Beginner EP 7\uff1a\u900f\u904eKubernetes ReplicaSet\u6a5f\u5236\u90e8\u7f72\u4e00\u7fa4Container"},"content":{"rendered":"\n

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

\u6b64\u524d\uff0c\u5efa\u7acb\u4e00\u500bPod\u5167\u542b\u4e00\u500bContainer\uff0c\u9019\u662f\u6700\u6a19\u6e96\u53ca\u7c21\u55ae\u7684\u60c5\u5883\uff1b\u5be6\u52d9\u4e0a\uff0cKubernetes\u8ce6\u4e88\u61c9\u7528\u7a0b\u5f0f\u9ad8\u53ef\u7528\u6027\u7684\u80fd\u529b\uff0c\u6700\u57fa\u672c\u7684\u65b9\u5f0f\u5c31\u662f\u300c\u6a6b\u5411\u64f4\u5c55\u300d\uff0c\u7c21\u8a00\u4e4b\u5c31\u662f\u300c\u5efa\u7acb\u591a\u500b\u76f8\u540c\u670d\u52d9\u7684Pod\u300d\u4f86\u540c\u6642\u63d0\u4f9b\u670d\u52d9\uff0c\u9019\u6642\u5019\uff0c\u5c31\u9700\u8981ReplicaSet\u9019\u500b\u8cc7\u6e90\u985e\u578b\u3002<\/p>\n\n\n\n

ReplicaSet\u9867\u540d\u601d\u7fa9\u5c31\u662f\u300c\u4e00\u7fa4\u526f\u672c\u300d\uff0c\u53ef\u4ee5\u6307\u5b9a\u7279\u5b9a\u7684\u6578\u91cf\uff0c\u8b93Kubernetes\u81ea\u52d5\u5efa\u7acb\u591a\u500bPod\uff0c\u4e26\u5c07\u4ed6\u5011\u5321\u5728\u4e00\u8d77\uff0c\u908f\u8f2f\u4e0a\u770b\u8d77\u4f86\u5c31\u50cf\u662f\u4e00\u500b\u670d\u52d9\uff0c\u82e5\u6709\u670d\u52d9\u6545\u969c\uff0c\u9084\u652f\u63f4\u81ea\u52d5\u91cd\u555fPod\uff0c\u8b93\u670d\u52d9\u76e1\u91cf\u505a\u5230\u4e0d\u4e2d\u65b7\u3002<\/p>\n\n\n\n

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

Kubernetes ReplicaSet\u57fa\u790e\u77e5\u8b58\u8207\u904b\u4f5c\u6a5f\u5236<\/strong><\/h2>\n\n\n\n

\u57fa\u790e\u77e5\u8b58<\/strong><\/h3>\n\n\n\n

ReplicaSet\u8f44\u4e0b\u638c\u7ba1\u591a\u500bPod\uff0c\u5982\u4e0b\u5716\uff0c\u9019\u4e9bPod\u6709\u4e00\u500b\u7279\u8272\uff0c\u4ed6\u5011\u90fd\u662f\u4e00\u6a21\u4e00\u6a23\u5167\u5bb9\u7684\uff0c\u5305\u542b\u88e1\u9762\u7684Container\u3001\u8cc7\u6e90\u898f\u683c\u3001\u8a2d\u5b9a…\u7b49\uff0c\u4ee5\u6b64\u4f86\u78ba\u4fdd\u591a\u500bPod\u540c\u6642\u63d0\u4f9b\u76f8\u540c\u7684\u670d\u52d9\uff0c\u4e0d\u50c5\u53ef\u4ee5\u78ba\u4fdd\u9ad8\u53ef\u7528\u6027\uff0c\u9084\u80fd\u63d0\u5347\u6574\u9ad4\u670d\u52d9\u7684\u5bb9\u91cf\u3002<\/p>\n\n\n

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

\u904b\u4f5c\u6a5f\u5236<\/strong><\/h3>\n\n\n\n

\u5728\u540c\u4e00\u500bReokicaSet\u4e0b\u7684\u5176\u4e2d\u4efb\u4e00\u500bContainer\u6545\u969c\uff0cKubernetes\u6703\u555f\u52d5\u5fa9\u56de\u6a5f\u5236\uff0c\u5c07\u81ea\u52d5\u5efa\u7acb\u4e00\u500b\u65b0\u7684Container\uff0c\u8b93\u6574\u9ad4ReplicaSet\u4fdd\u6301\u4e00\u500b\u56fa\u5b9a\u7684\u6578\u91cf\uff0c\u7dad\u6301\u9ad8\u53ef\u7528\u6027\u53ca\u670d\u52d9\u5bb9\u91cf\u3002<\/p>\n\n\n

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

\u5efa\u7acb\u4e00\u500bKubernetes ReplicaSet<\/strong><\/h2>\n\n\n\n

\u6b65\u9a5f1\uff1a<\/strong>\u5efa\u7acb\u4e00\u500breplicaset.yaml\u6a94\u6848\u3002<\/p>\n\n\n\n

\u6b65\u9a5f2\uff1a<\/strong>\u5148\u5beb\u5165Kubernetes YAML\u6a94\u6848\u7684\u57fa\u672c\u56db\u500b\u5143\u7d20\uff1a<\/p>\n\n\n\n

apiVersion:\nkind:\nmetadata:\nspec:<\/code><\/pre>\n\n\n\n
\u6b65\u9a5f3\uff1a<\/strong>\u6307\u5b9aapiVersion\u70baapps\/v1<\/strong>\uff0c\u6ce8\u610f\u5594\uff0c\u4e0d\u518d\u53ea\u662fv1\u800c\u5df2\uff0cReplicaSet\u88ab\u5b9a\u7fa9\u5728apps\/v1\u9019\u500bAPI\u7248\u672c\u4e2d\uff01<\/p>\n\n\n\n
apiVersion: apps\/v1<\/code><\/pre>\n\n\n\n
\u6b65\u9a5f4\uff1a<\/strong>\u6307\u5b9akind\u70baReplicaSet<\/strong>\u3002<\/p>\n\n\n\n
kind: ReplicaSet<\/code><\/pre>\n\n\n\n
\u6b65\u9a5f5\uff1a<\/strong>\u63cf\u8ff0\u4e00\u4e0bmetadata\u3002<\/p>\n\n\n\n
metadata:                            # metadata\u90e8\u5206\n  name: nginx-server-replicaset      # \u8a2d\u5b9a\u9019\u500bResplicaSet\u540d\u7a31\n  labels:                            # \u8a2d\u5b9a\u5e7e\u500blabels\n    app: frontend                    # \u6a19\u7c64\uff1akey=app, key=frontend\n    env: production                  # \u6a19\u7c64\uff1akey=env, key=produciton<\/code><\/pre>\n\n\n\n
\u6b65\u9a5f6\uff1a<\/strong>spec\u662f\u91cd\u982d\u6232\uff0cReplicaSet\u7684spec\u5167\u542b\u6709\u4e09\u500b\u57fa\u672c\u7684\u90e8\u5206\uff1a<\/p>\n\n\n\n
spec:              # spec\u90e8\u5206\n  selector:        # \u900f\u904eselector\u4f86\u9078\u5b9a\u8981\u88ab\u9019\u500bReplicaSet\u7ba1\u7406\u7684Container\n  replicas:        # \u8a2d\u5b9a\u8981\u5efa\u7acb\u526f\u672c\u7684\u6578\u91cf\n  template:        # \u88ab\u5efa\u7acbContainer\u7684\u898f\u683c<\/code><\/pre>\n\n\n\n
\u6b65\u9a5f7\uff1a<\/strong>\u8a2d\u5b9aspec->selector\uff1a<\/p>\n\n\n\n
spec:\n  selector:\n    matchLabels:        # \u900f\u904elabels\u5c0d\u61c9\u7684\u65b9\u5f0f\u8b93selector\u9078\u5230\u8981\u88ab\u7ba1\u7406\u7684Container \n      app: frontend     # \u6a19\u7c64\uff1akey=app, key=frontend<\/code><\/pre>\n\n\n\n
\u6b65\u9a5f8\uff1a<\/strong>\u8a2d\u5b9aspec->replicas\uff1a<\/p>\n\n\n\n
spec:\n  selector:\n    replicas: 2         # \u8a2d\u5b9a\u9019\u500bReplicaSet\u8f44\u4e0b\u7dad\u63012\u500bContainer\u526f\u672c<\/code><\/pre>\n\n\n\n
\u6b65\u9a5f9\uff1a<\/strong>\u8a2d\u5b9aspec->template\uff1b\u9019\u88e1\u7279\u5225\u8aaa\u660e\u4e00\u4e0b\uff0c\u8981\u653e\u7684\u5167\u5bb9\u662fContainer\u7684\u898f\u683c\uff0c\u9700\u8981\u653e\u5165metadata\u8207sepc\u5169\u500b\u90e8\u5206\uff0c\u53c3\u8003\u4e0a\u4e00\u7bc7\u5efa\u7acbPod\u7684\u5167\u5bb9\uff1a<\/p>\n\n\n\n
spec:\n  template:                       # template\u8f44\u4e0b\u653e\u5165metadata\u8207spec\n    metadata:                     # \u6307\u5b9aContainer\u7684metadata\u63cf\u8ff0\n      name: nginx-server          # \u8a2d\u5b9aContainer\u540d\u70banginx-server\n      labels:                     # \u8a2d\u5b9aLables\uff0c\u8b93selector\u9078\u5230\n        app: frontend             # \u8a2d\u5b9aselector\u6307\u5b9a\u7684\u6a19\u7c64\uff0c\u4e00\u6a23\u662fapp:frontend\n    spec:                         # \u6307\u5b9aContainer\u7684spec\n      containers:\n        - name: nginx-server      # \u6307\u5b9aContainer\u7684\u540d\u7a31\n          image: nginx            # \u6307\u5b9aContainer\u5efa\u7acb\u6240\u9700\u7684image<\/code><\/pre>\n\n\n\n
\u6b65\u9a5f10\uff1a<\/strong>\u5b8c\u6574\u7684YAML\u5167\u5bb9\u5982\u4e0b\uff1a<\/p>\n\n\n
\napiVersion: apps\/v1\nkind: ReplicaSet\nmetadata:\n  name: nginx-server-replicaset\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<\/pre><\/div>\n\n\n
\u6b65\u9a5f11\uff1a<\/strong>\u900f\u904ekubectl create\u4f86\u5efa\u7acb\u9019\u500bReplicaSet\uff0c\u6307\u4ee4\u8207\u6210\u529f\u8a0a\u606f\u5982\u4e0b\uff1a<\/p>\n\n\n\n
$ kubectl create -f replicaset.yaml<\/code><\/pre>\n\n\n
\n
\"kubectl<\/figure><\/div>\n\n\n
\u67e5\u770bReplicaSet\u7684\u7d30\u7bc0<\/strong><\/h2>\n\n\n\n
\u6b65\u9a5f1\uff1a<\/strong>\u6307\u4ee4kubectl get all<\/p>\n\n\n
\n# \u6709\u5169\u500bPod\uff0c\u6578\u91cf\u5c0d\u61c9\u5230spec->replicas: 2\nNAME                                READY   STATUS    RESTARTS   AGE\npod\/nginx-server-replicaset-4xqm7   1\/1     Running   0          6m37s\npod\/nginx-server-replicaset-rcxlz   1\/1     Running   0          6m37s\n\n# Kubernetes\u9810\u8a2d\u7684\u670d\u52d9\nNAME                 TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE\nservice\/kubernetes   ClusterIP   10.96.0.1    <none>        443\/TCP   6d5h\n\n# \u525b\u624d\u5efa\u7acb\u7684ReplicaSet\uff0c\u540d\u70banginx-server-replicaset\nNAME                                      DESIRED   CURRENT   READY   AGE\nreplicaset.apps\/nginx-server-replicaset   2         2         2       6m37s\n<\/pre><\/div>\n\n\n
\u6b65\u9a5f2\uff1a<\/strong>\u6307\u4ee4kubectl describe<\/p>\n\n\n\n
$ kubectl describe replicaset nginx-server-replicaset<\/code><\/pre>\n\n\n
\n# ReplicaSet\u540d\u70banginx-server-replicaset\nName:         nginx-server-replicaset\nNamespace:    default\n# selector\u7ba1\u7406\u540c\u6a23\u6709app=frontend\u6a19\u7c64\u7684Container\nSelector:     app=frontend\n# ReplicaSet\u7684\u6a19\u7c64\nLabels:       app=frontend\n              env=production\nAnnotations:  <none>\n# \u6307\u5b9a2\u500bContainer\u526f\u672c\nReplicas:     2 current \/ 2 desired\n# \u986f\u793aPod\u7684\u72c0\u614b\nPods Status:  2 Running \/ 0 Waiting \/ 0 Succeeded \/ 0 Failed\n# Pod\u7684Spec\uff0c\u5c0d\u61c9spec->template\nPod Template:\n  Labels:  app=frontend\n  Containers:\n   nginx-server:\n    Image:        nginx\n    Port:         <none>\n    Host Port:    <none>\n    Environment:  <none>\n    Mounts:       <none>\n  Volumes:        <none>\n# ReplicaSet\u7684\u4e8b\u4ef6\u6e05\u55ae\nEvents:\n  Type    Reason            Age    From                   Message\n  ----    ------            ----   ----                   -------\n  Normal  SuccessfulCreate  9m51s  replicaset-controller  Created pod: nginx-server-replicaset-4xqm7\n  Normal  SuccessfulCreate  9m50s  replicaset-controller  Created pod: nginx-server-replicaset-rcxlz\n<\/pre><\/div>\n\n\n
\u9a57\u8b49Kubernetes ReplicaSet\u81ea\u52d5\u56de\u8986\u6a5f\u5236<\/strong><\/h2>\n\n\n\n
\u6b65\u9a5f1\uff1a<\/strong>\u4f7f\u7528kubectl get pod\u67e5\u8a62Pod\u6e05\u55ae\u3002<\/p>\n\n\n
\nNAME                            READY   STATUS    RESTARTS   AGE\nnginx-server-replicaset-4xqm7   1\/1     Running   0          16m\nnginx-server-replicaset-rcxlz   1\/1     Running   0          16m\n<\/pre><\/div>\n\n\n
\u6b65\u9a5f2\uff1a<\/strong>\u4f7f\u7528kubectl delete\u522a\u9664\u4e00\u500bPod\u3002<\/p>\n\n\n\n
$ kubectl delete pod nginx-server-replicaset-4xqm7<\/code><\/pre>\n\n\n
\n
\"kubectl<\/figure><\/div>\n\n\n
\u6b65\u9a5f3\uff1a<\/strong>\u518d\u900f\u904ekubectl get pod\u67e5\u8a62Pod\u72c0\u614b\uff1a<\/p>\n\n\n
\nNAME                            READY   STATUS              RESTARTS   AGE\nnginx-server-replicaset-2ft6v   0\/1     ContainerCreating   0          2s\nnginx-server-replicaset-rcxlz   1\/1     Running             0          17m\n<\/pre><\/div>\n\n\n
\u53ef\u4ee5\u770b\u5230\u88ab\u522a\u9664\u7684Pod: nginx-server-replicaset-4xqm7\u5df2\u7d93\u6d88\u5931\uff0c\u53d6\u800c\u4ee3\u4e4b\u7684\u662f\u4e00\u500b\u65b0\u7684Pod\uff0c\u7cfb\u7d71\u81ea\u52d5\u7d66\u4e00\u500b\u65b0\u7684\u540d\u5b57\uff0c\u72c0\u614b\u662f”ContainerCreating”\uff0cReady\u6578\u91cf\u70ba0\/1\uff0c\u7a0d\u5f85\u4e00\u6703\u5152\uff0c\u518d\u67e5\u8a62\u4e00\u6b21\uff0c\u6240\u6709Pod\u7684\u72c0\u614b\u90fd\u70baRunning\uff0c\u6062\u5fa9\u6b63\u5e38\u3002<\/p>\n\n\n
\nNAME                            READY   STATUS    RESTARTS   AGE\nnginx-server-replicaset-2ft6v   1\/1     Running   0          6s\nnginx-server-replicaset-rcxlz   1\/1     Running   0          17m\n<\/pre><\/div>\n\n\n
\u522a\u9664ReplicaSet<\/strong><\/h2>\n\n\n\n
\u82e5\u8981\u522a\u9664ReplicaSet\uff0c\u4e26\u4e0d\u662f\u628aPod\u522a\u9664\u6389\u5c31\u53ef\u4ee5\uff0c\u56e0\u70baReplicaSet\u6703\u4e0d\u65b7\u7684\u91cd\u751f\u9019\u4e9bPod\uff1b\u53ea\u8981\u900f\u904ekubectl delete replicaset\u6307\u4ee4\u4f86\u522a\u9664\uff0c\u5373\u53ef\u771f\u7684\u522a\u9664ReplicaSet\uff0c\u6307\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n
$ kubectl delete replicaset <\/code><\/pre>\n\n\n
\n
\"kubectl<\/figure><\/div>\n\n\n
~ END ~<\/p>\n\n\n\n
\n\n\n\n
< For K8S Beginner EP 6\uff1a\u900f\u904eYAML\u6a94\u4f86\u5efa\u7acbContainer<\/a><\/td>For K8S Beginner EP 8\uff1a\u90e8\u7f72Kubernetes Deployment\uff0c\u4e26\u4f7f\u7528\u7248\u672c\u7ba1\u7406\u8207\u56de\u6efe\u6a5f\u5236<\/a> ><\/td><\/tr><\/tbody><\/table><\/div><\/figure>\n","protected":false},"excerpt":{"rendered":"
Kubernetes ReplicaSet\u662f\u9ad8\u53ef\u7528\u6027\u7684\u57fa\u790e\uff0c\u8b93\u670d\u52d9\u81ea\u7136\u800c\u7136\u64c1\u6709\u4e0d\u4e2d\u65b7\u670d\u52d9\u7684\u80fd\u529b\uff0c\u9084\u80fd\u63d0\u9ad8\u670d\u52d9\u7684\u5bb9\u91cf\uff0c\u5f9e\u5bb9\u61c9\u4ed8\u9f90\u5927\u9700\u6c42\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":[116,192,194],"_links":{"self":[{"href":"https:\/\/jovepater.com\/wp-json\/wp\/v2\/posts\/2708"}],"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=2708"}],"version-history":[{"count":19,"href":"https:\/\/jovepater.com\/wp-json\/wp\/v2\/posts\/2708\/revisions"}],"predecessor-version":[{"id":2922,"href":"https:\/\/jovepater.com\/wp-json\/wp\/v2\/posts\/2708\/revisions\/2922"}],"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=2708"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jovepater.com\/wp-json\/wp\/v2\/categories?post=2708"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jovepater.com\/wp-json\/wp\/v2\/tags?post=2708"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}