2023年8月17日，本人之前使用過nacos+dubbo+springboot、eureka+feign等環(huán)境。最近學(xué)習(xí)到了istio服務(wù)網(wǎng)格集成到k8s也可以實(shí)現(xiàn)分布式微服務(wù)。

1. 環(huán)境

• Kubernetes集群
• istio集成到k8s
• jdk17 (8也ok)
• gPRC服務(wù)間通信

2. 微服務(wù)

• cloud-config服務(wù)是spring-cloud-config-server配置中心，用于加載遠(yuǎn)程配置文件，該服務(wù)端口號(hào)8081
• boot-rpc-service服務(wù)是生產(chǎn)者微服務(wù)，開放的gRPC端口18082
• boot-grpc-client服務(wù)是消費(fèi)者微服務(wù)，開放的http端口是8083，開放接口/test1?name=hello實(shí)現(xiàn)了grpc調(diào)用生產(chǎn)者微服務(wù)
• 公共服務(wù)boot-grpc-api是生成的grpc proto信息

3. 部署到k8s

本地測試成功后，部署k8s

1. 生成各個(gè)服務(wù)jar包，上傳服務(wù)器

   • cloud-config.jar
   • boot-rpc-service.jar
   • boot-grpc-client.jar

2. 構(gòu)建各個(gè)服務(wù)docker鏡像

   • istio-demo-spring-configserver:v3
   • istio-demo-spring-gprc-server:v3
   • istio-demo-spring-gprc-client:v3

3. 創(chuàng)建各個(gè)微服務(wù)deployment資源

   - image: 'istio-demo-spring-configserver:v3'
     ports:
       - containerPort: 8081
   

   - image: 'istio-demo-spring-gprc-server:v3'
     ports:
       - containerPort: 18082
   

   - image: 'istio-demo-spring-gprc-client:v3'
     ports:
       - containerPort: 8083
   

4. 創(chuàng)建service資源

   kind: Service
   metadata:
     name: web-base
   spec:
     ports:
       - name: config8081
         port: 8081
         targetPort: 8081
       - name: gserver18082
         port: 18082
         targetPort: 18082
       - name: gclient8083
         port: 8083
         targetPort: 8083
   

5. 到此還沒使用istio的功能，先驗(yàn)證一下服務(wù)是否正常啟動(dòng)
   curl -I "http://web-base:8083/test1?name=hello"
   結(jié)果;
   HTTP/1.1 200 OK
   content-type: text/plain;charset=UTF-8
   content-length: 14
   date: Thu, 17 Aug 2023 02:40:23 GMT
   x-envoy-upstream-service-time: 32
   server: envoy

6. 創(chuàng)建istio虛擬服務(wù)用于內(nèi)部grpc通信

   apiVersion: networking.istio.io/v1alpha3
   kind: VirtualService
   metadata:
     name: web-base-internal-vs
   spec:
     hosts:
       - web-base
     http:
         route:
           - destination:
               host: web-base
               subset: dd11
             headers:
               response:
                 set:
                   ssxppp: ffffffyyyyyyy-internall
   ---
   apiVersion: networking.istio.io/v1alpha3
   kind: DestinationRule
   metadata:
     name: web-base-dr
   spec:
     host: web-base
     subsets:
       - name: dd11
         labels:
           version: vv11
   

7. 使用istio的功能，先驗(yàn)證一下內(nèi)部服務(wù)是否添加了響應(yīng)header信息
   curl -I "http://web-base:8083/test1?name=hello"
   結(jié)果;
   HTTP/1.1 200 OK
   content-type: text/plain;charset=UTF-8
   content-length: 14
   date: Thu, 17 Aug 2023 02:40:23 GMT
   x-envoy-upstream-service-time: 32
   server: envoy
   ssxppp: ffffffyyyyyyy-internall

8. 創(chuàng)建istio網(wǎng)關(guān)和虛擬服務(wù)用于外部交互

   apiVersion: networking.istio.io/v1alpha3
   kind: VirtualService
   metadata:
     name: web-base-external-vs
   spec:
     hosts:
       - grpcdemo.xxx.cn
     gateways:
       - grpcdemo-gateway
     http:
         route:
           - destination:
               host: web-base
               subset: dd11
               port:
                 number: 8083
             headers:
               response:
                 set:
                   ssxppp: ffffffyyyyyyy-externall
   ---
   apiVersion: networking.istio.io/v1alpha3
   kind: Gateway
   metadata:
     name: grpcdemo-gateway
   spec:
     selector:
       istio: ingressgateway # use Istio default gateway implementation
     servers:
       - port:
           number: 80
           name: http
           protocol: HTTP
         hosts:
           - "grpcdemo.xxx.cn"
   

9. 驗(yàn)證外部訪問是否成功
   curl -I -HHost:grpcdemo.xxx.cn "http://192.168.0.101:32318/test1?name=hello" （端口號(hào)是ingressgateway服務(wù)的nodeport）
   結(jié)果;
   HTTP/1.1 200 OK
   content-type: text/plain;charset=UTF-8
   content-length: 14
   date: Thu, 17 Aug 2023 02:40:23 GMT
   x-envoy-upstream-service-time: 32
   server: envoy
   ssxppp: ffffffyyyyyyy-extenall

源碼

https://github.com/shenshuxin01/grpc-springboot/tree/dev-istio文章來源地址http://www.zghlxwxcb.cn/news/detail-662639.html

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