Flink-12 Flink Java 3分钟上手 Kubernetes云原生下的Flink集群 Rancher Stateful Set yaml详细 扩容缩容部署 Docker容器编排 原创

代码仓库

会同步代码到 GitHub
https://github.com/turbo-duck/flink-demo

在这里插入图片描述

背景介绍

单机模式

在之前的章节中，已经验证过，但是实际运行的时候，我们是需要提交到服务器去运行的。

集群模式

在之前章节中，已经验证过，(方便测试) 使用了 Docker 的方式进行部署。同时也利用容器编排工具docker-compose的方式，进行集群的模式部署：

  • 简单测试 1 x JobManager + 1 x TaskManager
  • 集群模式 1 x JobManager + 3 x TaskManager
  • HA模式 2 x JobManager + Zookeeper + 3 x TaskManager

但是对于上述的 docker-compose 编排的方式，我们依然是在一台机器上的。对于实际的生产情况，我们可能需要面对多台机器进行部署，同时最好的方案是：动态扩容、动态缩容，最大程度的利用资源。

云原生部署

  • 首先确保你有 Kubernetes
  • 然后为了简化 这里借助 Rancher 可视化进行操作
  • 等熟悉了，你可以使用 yaml尝试部署。
  • 最后，生产环境可借助 Helm + Flink Operator 极大简化过程。

请添加图片描述

Yaml

JobManager

需要开放的端口如下：
请添加图片描述

完整的Yaml 如下:

apiVersion: apps/v1
kind: StatefulSet
metadata:
  annotations:
    field.cattle.io/creatorId: u-s4mkr
    field.cattle.io/publicEndpoints: '[{"addresses":["10.10.52.11"],"port":31120,"protocol":"TCP","serviceName":"flink-server:jobmanager-nodeport","allNodes":true},{"addresses":["10.10.52.11"],"port":30985,"protocol":"TCP","serviceName":"flink-server:jobmanager-nodeport","allNodes":true},{"addresses":["10.10.52.11"],"port":30166,"protocol":"TCP","serviceName":"flink-server:jobmanager-nodeport","allNodes":true}]'
  creationTimestamp: "2023-06-08T08:49:14Z"
  generation: 21
  labels:
    cattle.io/creator: norman
    workload.user.cattle.io/workloadselector: statefulSet-flink-server-jobmanager
  managedFields:
  - apiVersion: apps/v1
    fieldsType: FieldsV1
    fieldsV1:
      f:metadata:
        f:annotations:
          .: {}
          f:field.cattle.io/creatorId: {}
          f:field.cattle.io/publicEndpoints: {}
        f:labels:
          .: {}
          f:cattle.io/creator: {}
          f:workload.user.cattle.io/workloadselector: {}
      f:spec:
        f:podManagementPolicy: {}
        f:replicas: {}
        f:revisionHistoryLimit: {}
        f:selector: {}
        f:serviceName: {}
        f:template:
          f:metadata:
            f:annotations:
              .: {}
              f:cattle.io/timestamp: {}
              f:field.cattle.io/ports: {}
            f:labels:
              .: {}
              f:workload.user.cattle.io/workloadselector: {}
          f:spec:
            f:containers:
              k:{"name":"jobmanager"}:
                .: {}
                f:args: {}
                f:env:
                  .: {}
                  k:{"name":"JOB_MANAGER_RPC_ADDRESS"}:
                    .: {}
                    f:name: {}
                    f:value: {}
                f:image: {}
                f:imagePullPolicy: {}
                f:name: {}
                f:ports:
                  .: {}
                  k:{"containerPort":6123,"protocol":"TCP"}:
                    .: {}
                    f:containerPort: {}
                    f:name: {}
                    f:protocol: {}
                  k:{"containerPort":6124,"protocol":"TCP"}:
                    .: {}
                    f:containerPort: {}
                    f:name: {}
                    f:protocol: {}
                  k:{"containerPort":8081,"protocol":"TCP"}:
                    .: {}
                    f:containerPort: {}
                    f:name: {}
                    f:protocol: {}
                f:resources: {}
                f:securityContext:
                  .: {}
                  f:allowPrivilegeEscalation: {}
                  f:capabilities: {}
                  f:privileged: {}
                  f:readOnlyRootFilesystem: {}
                  f:runAsNonRoot: {}
                f:stdin: {}
                f:terminationMessagePath: {}
                f:terminationMessagePolicy: {}
                f:tty: {}
            f:dnsConfig: {}
            f:dnsPolicy: {}
            f:restartPolicy: {}
            f:schedulerName: {}
            f:securityContext: {}
            f:terminationGracePeriodSeconds: {}
        f:updateStrategy:
          f:type: {}
    manager: rancher
    operation: Update
    time: "2023-06-08T11:20:03Z"
  - apiVersion: apps/v1
    fieldsType: FieldsV1
    fieldsV1:
      f:status:
        f:collisionCount: {}
        f:currentReplicas: {}
        f:currentRevision: {}
        f:observedGeneration: {}
        f:readyReplicas: {}
        f:replicas: {}
        f:updateRevision: {}
        f:updatedReplicas: {}
    manager: kube-controller-manager
    operation: Update
    time: "2024-06-27T01:24:45Z"
  name: jobmanager
  namespace: flink-server
  resourceVersion: "126393476"
  uid: 461079aa-69f6-423e-85b7-36fdc5c513e7
spec:
  podManagementPolicy: OrderedReady
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      workload.user.cattle.io/workloadselector: statefulSet-flink-server-jobmanager
  serviceName: jobmanager
  template:
    metadata:
      annotations:
        cattle.io/timestamp: "2023-06-08T11:18:06Z"
        field.cattle.io/ports: '[[{"containerPort":8081,"dnsName":"jobmanager-nodeport","hostPort":0,"kind":"NodePort","name":"jm81","protocol":"TCP","sourcePort":31120},{"containerPort":6123,"dnsName":"jobmanager-nodeport","hostPort":0,"kind":"NodePort","name":"jm23","protocol":"TCP"},{"containerPort":6124,"dnsName":"jobmanager-nodeport","hostPort":0,"kind":"NodePort","name":"jm24","protocol":"TCP"}]]'
      creationTimestamp: null
      labels:
        workload.user.cattle.io/workloadselector: statefulSet-flink-server-jobmanager
    spec:
      containers:
      - args:
        - jobmanager
        env:
        - name: JOB_MANAGER_RPC_ADDRESS
          value: jobmanager
        image: 10.10.52.8/flink/flink
        imagePullPolicy: Always
        name: jobmanager
        ports:
        - containerPort: 8081
          name: jm81
          protocol: TCP
        - containerPort: 6123
          name: jm23
          protocol: TCP
        - containerPort: 6124
          name: jm24
          protocol: TCP
        resources: {}
        securityContext:
          allowPrivilegeEscalation: false
          capabilities: {}
          privileged: false
          readOnlyRootFilesystem: false
          runAsNonRoot: false
        stdin: true
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
        tty: true
      dnsConfig: {}
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      terminationGracePeriodSeconds: 30
  updateStrategy:
    type: RollingUpdate
status:
  collisionCount: 0
  currentReplicas: 1
  currentRevision: jobmanager-6ddbf8767b
  observedGeneration: 21
  readyReplicas: 1
  replicas: 1
  updateRevision: jobmanager-6ddbf8767b
  updatedReplicas: 1

TaskManager

需要开放的端口如下：
请添加图片描述

完整Yaml 如下：

apiVersion: apps/v1
kind: StatefulSet
metadata:
  annotations:
    field.cattle.io/creatorId: u-s4mkr
    field.cattle.io/publicEndpoints: '[{"addresses":["10.10.52.11"],"port":31538,"protocol":"TCP","serviceName":"flink-server:taskmanager-nodeport","allNodes":true},{"addresses":["10.10.52.11"],"port":30067,"protocol":"TCP","serviceName":"flink-server:taskmanager-nodeport","allNodes":true}]'
  creationTimestamp: "2023-06-08T08:49:30Z"
  generation: 10
  labels:
    cattle.io/creator: norman
    workload.user.cattle.io/workloadselector: statefulSet-flink-server-taskmanager
  managedFields:
  - apiVersion: apps/v1
    fieldsType: FieldsV1
    fieldsV1:
      f:metadata:
        f:annotations:
          .: {}
          f:field.cattle.io/creatorId: {}
          f:field.cattle.io/publicEndpoints: {}
        f:labels:
          .: {}
          f:cattle.io/creator: {}
          f:workload.user.cattle.io/workloadselector: {}
      f:spec:
        f:podManagementPolicy: {}
        f:replicas: {}
        f:revisionHistoryLimit: {}
        f:selector: {}
        f:serviceName: {}
        f:template:
          f:metadata:
            f:annotations:
              .: {}
              f:cattle.io/timestamp: {}
              f:field.cattle.io/ports: {}
              f:field.cattle.io/publicEndpoints: {}
            f:labels:
              .: {}
              f:workload.user.cattle.io/workloadselector: {}
          f:spec:
            f:containers:
              k:{"name":"taskmanager"}:
                .: {}
                f:args: {}
                f:env:
                  .: {}
                  k:{"name":"JOB_MANAGER_RPC_ADDRESS"}:
                    .: {}
                    f:name: {}
                    f:value: {}
                f:image: {}
                f:imagePullPolicy: {}
                f:name: {}
                f:ports:
                  .: {}
                  k:{"containerPort":6121,"protocol":"TCP"}:
                    .: {}
                    f:containerPort: {}
                    f:name: {}
                    f:protocol: {}
                  k:{"containerPort":6122,"protocol":"TCP"}:
                    .: {}
                    f:containerPort: {}
                    f:name: {}
                    f:protocol: {}
                f:resources: {}
                f:securityContext:
                  .: {}
                  f:allowPrivilegeEscalation: {}
                  f:privileged: {}
                  f:readOnlyRootFilesystem: {}
                  f:runAsNonRoot: {}
                f:stdin: {}
                f:terminationMessagePath: {}
                f:terminationMessagePolicy: {}
                f:tty: {}
            f:dnsPolicy: {}
            f:restartPolicy: {}
            f:schedulerName: {}
            f:securityContext: {}
            f:terminationGracePeriodSeconds: {}
        f:updateStrategy:
          f:type: {}
    manager: rancher
    operation: Update
    time: "2023-06-08T11:20:40Z"
  - apiVersion: apps/v1
    fieldsType: FieldsV1
    fieldsV1:
      f:status:
        f:collisionCount: {}
        f:currentReplicas: {}
        f:currentRevision: {}
        f:observedGeneration: {}
        f:readyReplicas: {}
        f:replicas: {}
        f:updateRevision: {}
        f:updatedReplicas: {}
    manager: kube-controller-manager
    operation: Update
    time: "2024-06-27T01:24:58Z"
  name: taskmanager
  namespace: flink-server
  resourceVersion: "126393537"
  uid: 9ddfa3b3-b497-43af-9bb6-af83ffa0aed3
spec:
  podManagementPolicy: OrderedReady
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      workload.user.cattle.io/workloadselector: statefulSet-flink-server-taskmanager
  serviceName: taskmanager
  template:
    metadata:
      annotations:
        cattle.io/timestamp: "2023-06-08T11:19:53Z"
        field.cattle.io/ports: '[[{"containerPort":6121,"dnsName":"taskmanager-nodeport","kind":"NodePort","name":"tm21","protocol":"TCP"},{"containerPort":6122,"dnsName":"taskmanager-nodeport","kind":"NodePort","name":"tm22","protocol":"TCP"}]]'
        field.cattle.io/publicEndpoints: '[{"addresses":["10.10.52.11"],"allNodes":true,"port":31538,"protocol":"TCP","serviceId":"flink-server:taskmanager-nodeport"},{"addresses":["10.10.52.11"],"allNodes":true,"port":30067,"protocol":"TCP","serviceId":"flink-server:taskmanager-nodeport"}]'
      creationTimestamp: null
      labels:
        workload.user.cattle.io/workloadselector: statefulSet-flink-server-taskmanager
    spec:
      containers:
      - args:
        - taskmanager
        env:
        - name: JOB_MANAGER_RPC_ADDRESS
          value: jobmanager
        image: 10.10.52.8/flink/flink
        imagePullPolicy: Always
        name: taskmanager
        ports:
        - containerPort: 6121
          name: tm21
          protocol: TCP
        - containerPort: 6122
          name: tm22
          protocol: TCP
        resources: {}
        securityContext:
          allowPrivilegeEscalation: false
          privileged: false
          readOnlyRootFilesystem: false
          runAsNonRoot: false
        stdin: true
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
        tty: true
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      terminationGracePeriodSeconds: 30
  updateStrategy:
    type: RollingUpdate
status:
  collisionCount: 0
  currentReplicas: 1
  currentRevision: taskmanager-6fd48fdb8d
  observedGeneration: 10
  readyReplicas: 1
  replicas: 1
  updateRevision: taskmanager-6fd48fdb8d
  updatedReplicas: 1

测试效果

控制台

（根据自己的情况）

http://10.10.52.11:31120/#/overview

扩容TaskManager

当我们对 TaskManager 进行扩容的时候，这里我扩展了 5个，正在逐步扩容，完毕之后 ，我们可以对应观察到控制台中的：
请添加图片描述

请添加图片描述

HA模式

同样的操作，你需要在 K8s 集群中用如下的方案来做高可用方案:

  • 3 x JobManager
  • N x TaskManager
  • Zookeeper
posted @   武子康  阅读(0)  评论(0)  编辑  收藏  举报  
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