每天部署数千个容器实例，扩缩容复杂性该如何管理？

@Library('jenkins-shared-library') _pipeline {   agent any   environment {       app = 'shoppingapp'       service = 'shoppingapp-home'       registryCredential = 'dockerhub'       dockerImage = ''       imageid = "deepanmurugan/shoppingapp-home:$BUILD_NUMBER"   }   stages {       stage('Build') {            steps {        script {            dockerImage = dockerbuild(imageid)        }        }         }       stage('Test') {           steps {                        testcase()           }       }       stage('Publish') {           steps{               script {            imagepush(imageid)                   }           }       }       stage('Pull Playbook Repo') {        steps {        dir('/tmp/ansible-playbooks/') {            gitcheckout(                branch: "master",                repoUrl: "https://github.com/deepanmurugan/Ansible_Playbook.git"            )        }    }       }       stage ('Deploy') {           steps {           dir('/tmp/ansible-playbooks/') {               script{            deploytok8s(imageid,app,service)               }           }           }       }   }}

def call(String dockerImage) {  script {    docker.build "${dockerImage}"  }}

def call() {    sh """        echo "Testing the docker built image"    """}

def call(String dockerImage) {  echo "${dockerImage}"  withCredentials([usernamePassword(credentialsId: 'dockerhub', usernameVariable: 'hubUsername', passwordVariable: 'hubPassword')]) {        sh """            docker login --username="${hubUsername}" --password="${hubPassword}"            docker push "${dockerImage}"        """    }}

def call(Map stageParams){  checkout([$class: 'GitSCM', branches: [[name: stageParams.branch]], userRemoteConfigs: [[credentialsId: 'github_repo', url: stageParams.repoUrl]]])}

def call(String dockerImage, String app, String service) {    sh """        ansible-playbook deploy_k8s.yml --extra-vars \"image_id=${dockerImage} app_name=${app} service_name=${service}\"    """}

FROM python:3.7.3-alpine3.9RUN mkdir -p /appWORKDIR /appCOPY ./src/requirements.txt /app/requirements.txtRUN pip install -r requirements.txtCOPY ./src/ /appENV FLASK_APP=server.pyCMD flask run -h 0.0.0.0 -p 5000

- hosts: localhost  user: ubuntu  tasks:  - name: Deploy the service    k8s:      state: present      definition: "{{ lookup('template', 'k8s/{{app_name}}/{{service_name}}/deployment.yml') | from_yaml }}"      validate_certs: no      namespace: default  - name: Deploy the application    k8s:      state: present      validate_certs: no      namespace: default      definition: "{{ lookup('template', 'k8s/{{app_name}}/{{service_name}}/service.yml') | from_yaml }}"  - name: Deploy the Ingress    k8s:      state: present      validate_certs: no      namespace: default      definition: "{{ lookup('template', 'k8s/{{app_name}}/common/ingress.yml') | from_yaml }}"

ubuntu@kube-master:~$ kubectl get nodesNAME STATUS ROLES AGE VERSIONkube-master Ready master 10d v1.19.4kube-worker1 Ready <none> 10d v1.19.4kube-worker2 Ready <none> 9d v1.19.4

ubuntu@kube-master:~$ kubectl get pods -n kube-system|grep ingresstraefik-ingress-controller-6b7f594d46–5jqzq 1/1 Running 0 7d12htraefik-ingress-controller-6b7f594d46-vvfch 1/1 Running 0 8d

apiVersion: apps/v1kind: Deploymentmetadata:  labels:    app: "{{ app_name }}"  name: {{ service_name }}-deloymentspec:  replicas: 2  selector:    matchLabels:      app: "{{ app_name }}"      task: "{{ service_name }}"  template:    metadata:      labels:        app: "{{ app_name }}"        task: "{{ service_name }}"    spec:      containers:      - name: {{ service_name }}-pod        image: "{{ image_id }}"        imagePullPolicy: Always        ports:        - containerPort: 5000      imagePullSecrets:        - name: dockerhubsecret  strategy:    type: RollingUpdate    rollingUpdate:      maxSurge: 1      maxUnavailable: 0

apiVersion: v1kind: Servicemetadata:  name: {{ service_name }}-servicespec:  selector:    app: "{{ app_name }}"    task: "{{ service_name }}"  ports:    - protocol: TCP      port: 80      targetPort: 5000      name: http

apiVersion: extensions/v1beta1kind: Ingressmetadata:  name: {{ app_name }}-ingress  annotations:    kubernetes.io/ingress.class: traefik    traefik.frontend.rule.type: PathPrefixStripspec:  rules:  - host: app.shoppingapp.com    http:      paths:      - path: /home        backend:          serviceName: shoppingapp-home-service          servicePort: http      - path: /kids        backend:          serviceName: shoppingapp-kids-service          servicePort: http      - path: /mens        backend:          serviceName: shoppingapp-mens-service          servicePort: http

frontend http_frontbind *:80mode httpdefault_backend http_back

backend http_backbalance roundrobinserver kube 172.31.35.122:32365 checkserver kube 172.31.40.13:32365 check

ubuntu@jenkins_ansible:~$ kubectl describe svc traefik-ingress-service -n kube-systemName: traefik-ingress-serviceNamespace: kube-systemLabels: <none>Annotations: <none>Selector: k8s-app=traefik-ingress-lbType: NodePortIP: 10.102.149.216Port: web 80/TCPTargetPort: 80/TCPNodePort: web 32365/TCPEndpoints: 10.244.1.99:80,10.244.3.19:80Port: admin 8080/TCPTargetPort: 8080/TCPNodePort: admin 31387/TCPEndpoints: 10.244.1.99:8080,10.244.3.19:8080Session Affinity: NoneExternal Traffic Policy: ClusterEvents: <none>

- path: /ladiesbackend:serviceName: shoppingapp-ladies-serviceservicePort: http

ubuntu@jenkins_ansible:/opt/python$ curl app.shoppingapp.com/ladiesWelcome to shoppingapp — Ladies section — shoppingapp-ladies-deloyment-656f6f9d9f-dms8w