{"id":2506,"date":"2023-01-18T18:36:04","date_gmt":"2023-01-18T10:36:04","guid":{"rendered":"https:\/\/199604.com\/?p=2506"},"modified":"2023-01-18T18:36:04","modified_gmt":"2023-01-18T10:36:04","slug":"replicationcontroller-%e4%b8%8e-replicaset-%e4%b8%8e-deployment-%e5%85%b3%e8%81%94","status":"publish","type":"post","link":"https:\/\/199604.com\/2506","title":{"rendered":"ReplicationController \u4e0e ReplicaSet \u4e0e Deployment \u5173\u8054"},"content":{"rendered":"

ReplicationController \u4e0e ReplicaSet \u4e0e Deployment \u5173\u8054<\/h1>\n

RC \uff08ReplicationController \uff09\u4e3b\u8981\u7684\u4f5c\u7528\u5c31\u662f\u7528\u6765\u786e\u4fdd\u5bb9\u5668\u5e94\u7528\u7684\u526f\u672c\u6570\u59cb\u7ec8\u4fdd\u6301\u5728\u7528\u6237\u5b9a\u4e49\u7684\u526f\u672c\u6570 \u3002\u5373\u5982\u679c\u6709\u5bb9\u5668\u5f02\u5e38\u9000\u51fa\uff0c\u4f1a\u81ea\u52a8\u521b\u5efa\u65b0\u7684Pod\u6765\u66ff\u4ee3\uff1b\u800c\u5982\u679c\u5f02\u5e38\u591a\u51fa\u6765\u7684\u5bb9\u5668\u4e5f\u4f1a\u81ea\u52a8\u56de\u6536<\/strong><\/p>\n

Kubernetes \u5b98\u65b9\u5efa\u8bae\u4f7f\u7528 RS\uff08ReplicaSet \uff09 \u66ff\u4ee3 RC \uff08ReplicationController \uff09 \u8fdb\u884c\u90e8\u7f72\uff0cRS \u8ddf RC \u6ca1\u6709\u672c\u8d28\u7684\u4e0d\u540c\uff0c\u53ea\u662f\u540d\u5b57\u4e0d\u4e00\u6837\uff0c\u5e76\u4e14 RS \u652f\u6301\u96c6\u5408\u5f0f\u7684 selector<\/strong><\/p>\n

RC \u63a7\u5236\u5668<\/h2>\n
apiVersion: v1\nkind: ReplicationController\nmetadata:\n  name: rc-demo\n  labels:\n    app: rc\nspec:\n  replicas: 3\n  selector:\n    app: rc\n  template:\n    metadata:\n      labels:\n        app: rc\n    spec:\n      containers:\n        - name: nginx-demo\n          image: nginx\n          env:\n            - name: GET_HOSTS_FROM\n              value: dns\n            - name: username\n              value: \"glj\"\n          ports:\n            - containerPort: 80\n<\/code><\/pre>\n
RS \u63a7\u5236\u5668<\/h2>\n
apiVersion: apps\/v1\nkind: ReplicaSet\nmetadata:\n  name: rs-demo\nspec:\n  replicas: 3\n  selector:\n    matchLabels:\n      name: rs-demo\n  template:\n    metadata:\n      name: rs-demo\n      labels:\n        name: rs-demo\n    spec:\n      containers:\n        - name: nginx-demo\n          image: nginx\n          env:\n            - name: GET_HOSTS_FROM\n              value: dns\n            - name: username\n              value: \"glj\"\n          ports:\n            - containerPort: 80\n<\/code><\/pre>\n
selector.matchExpressions<\/h3>\n
rs \u5728\u6807\u7b7e\u9009\u62e9\u5668\u4e0a\uff0c\u9664\u4e86\u53ef\u4ee5\u5b9a\u4e49\u952e\u503c\u5bf9\u7684\u9009\u62e9\u5f62\u5f0f\uff0c\u8fd8\u652f\u6301 matchExpressions \u5b57\u6bb5\uff0c\u53ef\u4ee5\u63d0\u4f9b\u591a\u79cd\u9009\u62e9\u3002
\n\u76ee\u524d\u652f\u6301\u7684\u64cd\u4f5c\u5305\u62ec\uff1a<\/p>\n
    \n
  • In\uff1alabel \u7684\u503c\u5728\u67d0\u4e2a\u5217\u8868\u4e2d<\/li>\n
  • NotIn\uff1alabel \u7684\u503c\u4e0d\u5728\u67d0\u4e2a\u5217\u8868\u4e2d<\/li>\n
  • Exists\uff1a\u67d0\u4e2a label \u5b58\u5728<\/li>\n
  • DoesNotExist\uff1a\u67d0\u4e2a label \u4e0d\u5b58\u5728<\/li>\n<\/ul>\n
    apiVersion: apps\/v1\nkind: ReplicaSet\nmetadata:\n  name: rs-demo\nspec:\n  replicas: 3\n  selector:\n    matchExpressions:\n      - key: name\n        operator: Exists\n  template:\n    metadata:\n      name: rs-demo\n      labels:\n        name: rs-demo\n    spec:\n      containers:\n        - name: nginx-demo\n          image: nginx\n          env:\n            - name: GET_HOSTS_FROM\n              value: dns\n            - name: username\n              value: \"glj\"\n          ports:\n            - containerPort: 80\n\n\n---\napiVersion: apps\/v1\nkind: ReplicaSet\nmetadata:\n  name: rs-demo\nspec:\n  selector:\n    matchExpressions:\n      - key: name\n        operator: In\n        values:\n        - glj\n        - guoliangjun\n  template:\n    metadata:\n      labels:\n        name: glj\n    spec:\n      containers:\n        - name: rs-c1\n          image: nginx\n          ports:\n            - containerPort: 80\n<\/code><\/pre>\n
    RS \u4e0e Deployment  \u7684\u5173\u8054<\/h2>\n
    \"image-20230117234802769\"<\/div><\/p>\n
    Deployment<\/h2>\n
    Deployment \u4e3a Pod \u548c ReplicaSet \u63d0\u4f9b\u4e86\u4e00\u4e2a\u58f0\u660e\u5f0f\u5b9a\u4e49(declarative)\u65b9\u6cd5\uff0c\u7528\u6765\u66ff\u4ee3\u4ee5\u524d\u7684ReplicationController \u6765\u65b9\u4fbf\u7684\u7ba1\u7406\u5e94\u7528\u3002\u5178\u578b\u7684\u5e94\u7528\u573a\u666f\u5305\u62ec\uff1a<\/strong><\/p>\n
      \n
    • \u5b9a\u4e49Deployment\u6765\u521b\u5efaPod\u548cReplicaSet<\/strong><\/li>\n
    • \u6eda\u52a8\u5347\u7ea7\u548c\u56de\u6eda\u5e94\u7528<\/strong><\/li>\n
    • \u6269\u5bb9\u548c\u7f29\u5bb9<\/strong><\/li>\n
    • \u6682\u505c\u548c\u7ee7\u7eedDeployment<\/strong><\/li>\n<\/ul>\n
      \u4e34\u65f6\u5165\u95e8<\/h3>\n
      1.\u90e8\u7f72\u4e00\u4e2a\u7b80\u5355\u7684 Nginx \u5e94\u7528<\/h4>\n
      apiVersion: apps\/v1\nkind: Deployment\nmetadata:\n  name: nginx-deployment\n  labels:\n    app: labels-nginx-deployment\nspec:\n  replicas: 5\n  selector:\n    matchLabels:\n      app: labels-nginx-deployment\n  template:\n    metadata:\n      labels:\n        app: labels-nginx-deployment\n    spec:\n      containers:\n        - name: nginx\n          image: daocloud.io\/library\/nginx:1.13.0-alpine\n          imagePullPolicy: IfNotPresent\n          ports:\n              - containerPort: 80\n                protocol: TCP\n<\/code><\/pre>\n
      kubectl apply -f nginx-deployment.yaml --record\n## --record\u53c2\u6570\u53ef\u4ee5\u8bb0\u5f55\u547d\u4ee4\uff0c\u6211\u4eec\u53ef\u4ee5\u5f88\u65b9\u4fbf\u7684\u67e5\u770b\u6bcf\u6b21 revision \u7684\u53d8\u5316\n<\/code><\/pre>\n
      2.\u6d4b\u8bd5\u6269\u5bb9\u547d\u4ee4<\/h4>\n
      kubectl scale deployment nginx-deployment --replicas 10<\/code><\/p>\n
      3.\u6d4b\u8bd5\u66f4\u65b0\u547d\u4ee4<\/h4>\n
      kubectl set image deployment\/nginx-deployment nginx=nginx:1.21.1<\/code><\/p>\n
      4.\u6d4b\u8bd5\u7b80\u5355\u7684\u56de\u6eda<\/h4>\n
      kubectl rollout undo deployment\/nginx-deployment<\/code><\/p>\n
      \u66f4\u65b0 Deployment<\/h3>\n
      \n  \u6ce8\u610f\uff1a Deployment \u7684 rollout \u5f53\u4e14\u4ec5\u5f53 Deployment \u7684 pod template\uff08\u4f8b\u5982.spec.template\uff09\u4e2d\u7684label\u66f4\u65b0\u6216\u8005\u955c\u50cf\u66f4\u6539\u65f6\u88ab\u89e6\u53d1\u3002\u5176\u4ed6\u66f4\u65b0\uff0c\u4f8b\u5982\u6269\u5bb9Deployment\u4e0d\u4f1a\u89e6\u53d1 rollout\n<\/p><\/blockquote>\n
      \u4ee3\u66ff\u539f\u6765\u7684\u955c\u50cf<\/h4>\n
      [root@k8s-m1 deploy]# kubectl set image deployment.apps\/nginx-deployment nginx=nginx:1.22.1\ndeployment.apps\/nginx-deployment image updated\n<\/code><\/pre>\n
      \u53ef\u4ee5\u4f7f\u7528edit<\/code>\u547d\u4ee4\u6765\u7f16\u8f91 Deployment<\/strong><\/p>\n
      [root@k8s-m1 deploy]# kubectl edit deployment\/nginx-deployment\ndeployment \"nginx-deployment\" edited\n<\/code><\/pre>\n
      \u67e5\u770b rollout \u7684\u72b6\u6001<\/h4>\n
      [root@k8s-m1 deploy]# kubectl rollout status deployment\/nginx-deployment\ndeployment \"nginx-deployment\" successfully rolled out\n<\/code><\/pre>\n
      \u67e5\u770b\u5386\u53f2 RS<\/strong><\/h4>\n
      [root@k8s-m1 deploy]# kubectl get rs\nNAME                                          DESIRED   CURRENT   READY   AGE\nreplicaset.apps\/nginx-deployment-7f4cc97958   0         0         0       99s\nreplicaset.apps\/nginx-deployment-d4c88946c    5         5         5       47s\n\n<\/code><\/pre>\n
      Deployment \u66f4\u65b0\u7b56\u7565<\/h3>\n
      Deployment \u53ef\u4ee5\u4fdd\u8bc1\u5728\u5347\u7ea7\u65f6\u53ea\u6709\u4e00\u5b9a\u6570\u91cf\u7684 Pod \u662f down \u7684\u3002<\/strong><\/p>\n
      Deployment \u540c\u65f6\u4e5f\u53ef\u4ee5\u786e\u4fdd\u53ea\u521b\u5efa\u51fa\u8d85\u8fc7\u671f\u671b\u6570\u91cf\u7684\u4e00\u5b9a\u6570\u91cf\u7684 Pod\u3002<\/strong><\/p>\n
      \u6682\u65f6\u9ed8\u8ba4\u662f\uff1a25%<\/strong> \uff0c\u4f7f\u7528\u547d\u4ee4\u67e5\u8be2\uff1akubectl describe deployments<\/code><\/p>\n
      \"image-20230117235633536\"<\/div><\/p>\n
      \u66f4\u65b0\u7b56\u7565\u58f0\u660e<\/h4>\n
      kubectl explain deploy.spec.strategy.type<\/code><\/p>\n
        \n
      • Recreate  # \u91cd\u5efa<\/li>\n
      • rollingUpdate #\u6eda\u52a8\u66f4\u65b0\n
          \n
        • maxSurge\uff1a\u6307\u5b9a\u8d85\u51fa\u526f\u672c\u6570\u6709\u51e0\u4e2a\uff0c\u4e24\u79cd\u65b9\u5f0f\uff1a1\u3001\u6307\u5b9a\u6570\u91cf 2\u3001\u767e\u5206\u6bd4<\/li>\n
        • maxUnavailable \uff1a \u6700\u591a\u6709\u51e0\u4e2a\u4e0d\u53ef\u7528<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
          \u6d4b\u8bd5\u4f7f\u7528\uff1akubectl patch deployment  nginx-deployment -p '{\"spec\":{\"strategy\":{\"rollingUpdate\":{\"maxSurge\":1,\"maxUnavailable\":0}}}}'<\/code><\/p>\n
          \u91d1\u4e1d\u96c0\u90e8\u7f72<\/h4>\n
          \u8bbe\u7f6e\u4e00\u90e8\u5206pod\u5347\u7ea7\u5230nginx:1.23.3\uff0c\u7136\u540e\u6682\u505c\u5347\u7ea7<\/h5>\n
          [root@k8s-m1 deploy]# kubectl set image deploy  nginx-deployment nginx=nginx:1.23.3 && kubectl rollout pause deploy  nginx-deployment\ndeployment.apps\/nginx-deployment image updated\ndeployment.apps\/nginx-deployment paused\n\n<\/code><\/pre>\n
          \"image-20230118000302878\"<\/div><\/p>\n
          \u6ca1\u95ee\u9898\u540e\uff0cresume\u91cd\u65b0\u6267\u884c\u5347\u7ea7<\/h5>\n
          [root@k8s-m1 deploy]# kubectl rollout resume deploy  nginx-deployment\ndeployment.apps\/nginx-deployment resumed\n<\/code><\/pre>\n
          \"image-20230118000455303\"<\/div><\/p>\n
          \u56de\u9000 Deployment<\/h3>\n
          kubectl set image deployment\/nginx-deployment nginx=nginx:1.21.1\nkubectl rollout status deployments nginx-deployment\nkubectl get pods\nkubectl rollout history deployment\/nginx-deployment\nkubectl rollout undo deployment\/nginx-deployment\nkubectl rollout undo deployment\/nginx-deployment --to-revision=2   ## \u53ef\u4ee5\u4f7f\u7528 --revision\u53c2\u6570\u6307\u5b9a\u67d0\u4e2a\u5386\u53f2\u7248\u672c\nkubectl rollout pause deployment\/nginx-deployment    ## \u6682\u505c deployment \u7684\u66f4\u65b0\n<\/code><\/pre>\n
          \u6e05\u7406 Policy<\/h3>\n
          \u60a8\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e.spec.revisonHistoryLimit<\/code>\u9879\u6765\u6307\u5b9a deployment \u6700\u591a\u4fdd\u7559\u591a\u5c11 revision \u5386\u53f2\u8bb0\u5f55\u3002\u9ed8\u8ba4\u7684\u4f1a\u4fdd\u7559\u6240\u6709\u7684 revision\uff1b\u5982\u679c\u5c06\u8be5\u9879\u8bbe\u7f6e\u4e3a0\uff0cDeployment \u5c31\u4e0d\u5141\u8bb8\u56de\u9000\u4e86<\/strong><\/p>\n
          apiVersion: apps\/v1\nkind: Deployment\nmetadata:\n  name: nginx-deployment\n  labels:\n    app: labels-nginx-deployment\nspec:\n  revisionHistoryLimit: 0\n  replicas: 5\n  selector:\n    matchLabels:\n      app: labels-nginx-deployment\n  template:\n    metadata:\n      labels:\n        app: labels-nginx-deployment\n    spec:\n      containers:\n        - name: nginx\n          image: daocloud.io\/library\/nginx:1.13.0-alpine\n          imagePullPolicy: IfNotPresent\n          ports:\n              - containerPort: 80\n                protocol: TCP\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
          ReplicationController \u4e0e ReplicaSet \u4e0e Deployment \u5173\u8054 RC \uff08 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[353],"tags":[352,351],"class_list":["post-2506","post","type-post","status-publish","format-standard","hentry","category-kubernetes","tag-k8s","tag-kubernetes"],"_links":{"self":[{"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/posts\/2506","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/comments?post=2506"}],"version-history":[{"count":1,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/posts\/2506\/revisions"}],"predecessor-version":[{"id":2508,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/posts\/2506\/revisions\/2508"}],"wp:attachment":[{"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/media?parent=2506"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/categories?post=2506"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/199604.com\/wp-json\/wp\/v2\/tags?post=2506"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}