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📜  Kubernetes-应用程序部署

📅  最后修改于: 2020-11-01 04:17:12             🧑  作者: Mango

部署是一种将映像转换为容器，然后将这些映像分配给Kubernetes集群中的Pod的方法。这也有助于设置应用程序集群，包括服务，pod，复制控制器和副本集的部署。可以以这样一种方式来设置集群：部署在Pod上的应用程序可以相互通信。

在此设置中，我们可以在一个应用程序的顶部设置负载均衡器设置，以将流量分流到一组Pod，然后它们与后端Pod通信。 Pod之间的通信通过Kubernetes中内置的服务对象进行。

应用程序集群视图

Ngnix负载平衡器Yaml文件

apiVersion: v1
kind: Service
metadata:
   name: oppv-dev-nginx
      labels:
         k8s-app: omni-ppv-api
spec:
   type: NodePort
   ports:
   - port: 8080
      nodePort: 31999
      name: omninginx
   selector:
      k8s-app: appname
      component: nginx
      env: dev

Ngnix复制控制器Yaml

apiVersion: v1
kind: ReplicationController
metadata:
   name: appname
spec:
   replicas: replica_count
   template:
      metadata:
         name: appname
         labels:
            k8s-app: appname
            component: nginx
               env: env_name
spec:
   nodeSelector:
      resource-group: oppv
   containers:
      - name: appname
      image: IMAGE_TEMPLATE
      imagePullPolicy: Always
      ports:
         - containerPort: 8080
         resources:
            requests:
               memory: "request_mem"
               cpu: "request_cpu"
            limits:
               memory: "limit_mem"
               cpu: "limit_cpu"
            env:
            - name: BACKEND_HOST
               value: oppv-env_name-node:3000

前端服务Yaml文件

apiVersion: v1
kind: Service
metadata:
   name: appname
   labels:
      k8s-app: appname
spec:
   type: NodePort
   ports:
   - name: http
      port: 3000
      protocol: TCP
      targetPort: 3000
   selector:
      k8s-app: appname
      component: nodejs
      env: dev

前端复制控制器Yaml文件

apiVersion: v1
kind: ReplicationController
metadata:
   name: Frontend
spec:
   replicas: 3
   template:
      metadata:
         name: frontend
         labels:
            k8s-app: Frontend
            component: nodejs
            env: Dev
spec:
   nodeSelector:
      resource-group: oppv
   containers:
      - name: appname
         image: IMAGE_TEMPLATE
         imagePullPolicy: Always
         ports:
            - containerPort: 3000
            resources:
               requests:
                  memory: "request_mem"
                  cpu: "limit_cpu"
                  limits:
                  memory: "limit_mem"
                  cpu: "limit_cpu"
            env:
               - name: ENV
               valueFrom:
               configMapKeyRef:
               name: appname
               key: config-env

后端服务Yaml文件

apiVersion: v1
kind: Service
metadata:
   name: backend
   labels:
      k8s-app: backend
spec:
   type: NodePort
   ports:
   - name: http
      port: 9010
      protocol: TCP
      targetPort: 9000
   selector:
      k8s-app: appname
      component: play
      env: dev

支持的复制控制器Yaml文件

apiVersion: v1
kind: ReplicationController
metadata:
   name: backend
spec:
   replicas: 3
   template:
      metadata:
         name: backend
      labels:
         k8s-app: beckend
         component: play
         env: dev
spec:
   nodeSelector:
      resource-group: oppv
      containers:
         - name: appname
            image: IMAGE_TEMPLATE
            imagePullPolicy: Always
            ports:
            - containerPort: 9000
            command: [ "./docker-entrypoint.sh" ]
            resources:
               requests:
                  memory: "request_mem"
                  cpu: "request_cpu"
               limits:
                  memory: "limit_mem"
                  cpu: "limit_cpu"
            volumeMounts:
               - name: config-volume
               mountPath: /app/vipin/play/conf
         volumes:
            - name: config-volume
            configMap:
            name: appname