[cloud native] 4.1 Devops foundation and Practice

  hello ~ Hello, everyone , In the previous expansion, I briefly introduced DevOps , From the beginning of this article, we have entered into the automated deployment project . Some of the projects we wrote earlier , They are manually added step by step , It seems too cumbersome , How we have 1000 A project , This cannot be deployed manually （ It will be tiring si One of the ）, So the official for efficiency , Launched  DevOps.

 

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Catalog

One 、DevOps brief introduction

Two 、 Shangyitong project goes to the cloud

3、 ... and 、sentinel Deploy

1、Sentinel

Four 、mongo Deploy

5、 ... and 、 Production environment configuration extraction

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One 、DevOps brief introduction

DevOps Is a series of practices and tools , You can make IT And the software development team Process automation . among , With the increasing popularity of agile software development , Continuous integration (CI) and Continuous delivery (CD) It has become an ideal solution in this field . stay CI/CD In workflow , Each set is verified by automated construction , Including coding 、 Release and test , So as to help developers find integration errors in advance , Teams can also quickly 、 Security 、 Reliably deliver internal software to the production environment .

Two 、 Shangyitong project goes to the cloud

Here is the server 、 client 、 And gateway ; After the deployment of server and client , Send a request to the gateway , The gateway sends each request to the microservice

Project framework

yygh-parent
|---common                                  // General module 
|---hospital-manage                         // Hospital backstage 				[9999]   
|---model																		// Data model 
|---server-gateway													// gateway     				[80]
|---service																	// Micro service layer 
|-------service-cmn													// Public service 				[8202]
|-------service-hosp												// Hospital data services 		[8201]
|-------service-order												// Make an appointment to order 		[8206]
|-------service-oss													// Object storage service 		[8205]
|-------service-sms													// SMS service 				[8204]
|-------service-statistics									// Statistical services 				[8208]
|-------service-task												// Regular service 				[8207]
|-------service-user												// Member services 				[8203]


====================================================================

yygh-admin																	// Hospital management backstage 		[9528]
yygh-site																		// Registration platform 				[3000]

3、 ... and 、sentinel Deploy

Before going to the cloud, we must first deploy middleware , image  Nacos、MySQL、Redis It has been deployed before , So next, deploy the rest .

 

1、Sentinel

It is used for flow protection

In the application load ——> Create a service in the service （ Set the basic information 、 Container mirror 、 Mount storage 、 Advanced settings and other settings ）

Four 、mongo Deploy

  alike , In the application load ——> Select a template to create in the application , Click the deployment （ Set the basic information 、 Application configuration
Wait for settings ）, For Hou Hao's convenient visit , You can expose the port number .

  Then specify the workload to create the service （ Setting basic information 、 Service settings 、 Advanced settings ）, After deployment, we can use a tool to test whether the deployment is complete （MongoDB Compass Software for ）, Connect , No problem

 

mysq| Data initialization

Using tools （SQLyog） Connected to the mysql , Will we use sql The statement is imported and run .

5、 ... and 、 Production environment configuration extraction

Project default rules

• Each microservice item , In the production environment , Will automatically get Microservice name -prod.yml As your own core configuration file
• Each microservice item , In the production environment , The default is to use 8080 port

Create a  service-cmntprod.yml Change the address of all middleware to the address of our production , The same for every microservice （Sentinel、MongoDB、RabbitMQ、Redis etc. ） Such operations are required , Configured in the back  deploy.yaml file

apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: service-cart
  name: service-cart
  namespace: his   # Be sure to write a namespace 
spec:
  progressDeadlineSeconds: 600
  replicas: 1
  selector:
    matchLabels:
      app: service-cart
  strategy:
    rollingUpdate:
      maxSurge: 50%
      maxUnavailable: 50%
    type: RollingUpdate
  template:
    metadata:
      labels:
        app: service-cart
    spec:
      imagePullSecrets:
        - name: aliyun-docker-hub  # Configure the account and password for accessing alicloud under the project in advance 
      containers:
        - image: $REGISTRY/$ALIYUNHUB_NAMESPACE/service-cart
          readinessProbe:
            httpGet:
              path: /actuator/health
              port: 8080
            timeoutSeconds: 10
            failureThreshold: 30
            periodSeconds: 5
          imagePullPolicy: Always
          name: app
          ports:
            - containerPort: 8080
              protocol: TCP
          resources:
            limits:
              cpu: 300m
              memory: 600Mi
          terminationMessagePath: /dev/termination-log
          terminationMessagePolicy: File
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      terminationGracePeriodSeconds: 30
---
apiVersion: v1
kind: Service
metadata:
  labels:
    app: service-cart
  name: service-cart
  namespace: his
spec:
  ports:
    - name: http
      port: 8080
      protocol: TCP
      targetPort: 8080
  selector:
    app: service-cart
  sessionAffinity: None
  type: ClusterIP

Every step is worth a thousand miles , young , Work hard , Give future self an account ！ Move forward to better yourself tomorrow ！