.net core微服务之服务发现

一：nacos

https://nacos.io/docs/latest/what-is-nacos/

https://github.com/alibaba/nacos

二：consul

https://developer.hashicorp.com/consul/docs?product_intent=consul

https://github.com/hashicorp/consul

服务发现的框架常用的还有zookeeper eureka等，这里准备使用nacos

前置条件准备 docker，yaml

version: "3.8"networks:

  caseor_bridge:

    driver: bridge

    ipam:

      config:- subnet: 172.0.10.0/24services:



    mysql:

        container_name: mysql

        image: mysql

        privileged:truecommand:--character-set-server=utf8mb4 --collation-server=utf8mb4_general_ci --max_connections=2000 --max_allowed_packet=64M

        environment:- TZ=Asia/Shanghai- MYSQL_ROOT_PASSWORD=123456volumes:- ./mysql:/var/lib/mysql

        ports:- "3306:3306"healthcheck:

          test: ["CMD", "mysqladmin" ,"ping", "-h", "localhost"]

          interval: 5s

          timeout: 10s

          retries:10networks:

          caseor_bridge:

            ipv4_address:172.0.10.3redis:

        image: redis

        container_name:"redis"ports:- "6379:6379"volumes:- ./redis/data:/data- ./redis/conf:/usr/local/etc/redis

        networks:

          caseor_bridge:

                ipv4_address:172.0.10.4nacos1:

        container_name: nacos1

        hostname: nacos1

        image: nacos/nacos-server

        environment:- MODE=cluster- PREFER_HOST_MODE=hostname- NACOS_SERVERS=nacos1:8848 nacos2:8848 nacos3:8848
            - SPRING_DATASOURCE_PLATFORM=mysql- MYSQL_SERVICE_HOST=172.0.10.3
            - MYSQL_SERVICE_PORT=3306
            - MYSQL_SERVICE_USER=root- MYSQL_SERVICE_PASSWORD=123456
            - MYSQL_SERVICE_DB_NAME=nacos- MYSQL_SERVICE_DB_PARAM=characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC&allowPublicKeyRetrieval=true  
            - JVM_XMS=128m- JVM_XMX=128m- JVM_XMN=128m

        volumes:- ./nacos/cluster-logs/nacos1:/home/nacos/logs- ./nacos/init.d:/home/nacos/init.d

        ports:- 8850:8848
            - 7850:7848     
            - 9870:9848
            - 9852:9849depends_on:-mysql

        networks:

          caseor_bridge:

                ipv4_address:172.0.10.5nacos2:

        container_name: nacos2

        hostname: nacos2

        image: nacos/nacos-server

        environment:- MODE=cluster- PREFER_HOST_MODE=hostname- NACOS_SERVERS=nacos1:8848 nacos2:8848 nacos3:8848
            - SPRING_DATASOURCE_PLATFORM=mysql- MYSQL_SERVICE_HOST=172.0.10.3
            - MYSQL_SERVICE_PORT=3306
            - MYSQL_SERVICE_USER=root- MYSQL_SERVICE_PASSWORD=123456
            - MYSQL_SERVICE_DB_NAME=nacos- MYSQL_SERVICE_DB_PARAM=characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC&allowPublicKeyRetrieval=true  
            - JVM_XMS=128m- JVM_XMX=128m- JVM_XMN=128m

        volumes:- ./nacos/cluster-logs/nacos2:/home/nacos/logs- ./nacos/init.d:/home/nacos/init.d

        ports:- 8849:8848
            - 7849:7848     
            - 9869:9848
            - 9851:9849depends_on:-mysql

        networks:

          caseor_bridge:

                ipv4_address:172.0.10.6nacos3:

        container_name: nacos3

        hostname: nacos3

        image: nacos/nacos-server

        environment:- MODE=cluster- PREFER_HOST_MODE=hostname- NACOS_SERVERS=nacos1:8848 nacos2:8848 nacos3:8848
            - SPRING_DATASOURCE_PLATFORM=mysql- MYSQL_SERVICE_HOST=172.0.10.3
            - MYSQL_SERVICE_PORT=3306
            - MYSQL_SERVICE_USER=root- MYSQL_SERVICE_PASSWORD=123456
            - MYSQL_SERVICE_DB_NAME=nacos- MYSQL_SERVICE_DB_PARAM=characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC&allowPublicKeyRetrieval=true  
            - JVM_XMS=128m- JVM_XMX=128m- JVM_XMN=128m

        volumes:- ./nacos/cluster-logs/nacos3:/home/nacos/logs- ./nacos/init.d:/home/nacos/init.d

        ports:- 8848:8848
            - 7848:7848     
            - 9848:9848
            - 9849:9849depends_on:-mysql

        networks:

          caseor_bridge:

                ipv4_address:172.0.10.7etcd:

        container_name: etcd

        hostname: etcd

        image: bitnami/etcd

        volumes:- ./etcd/data:/bitnami/etcd

        environment:

          ETCD_ENABLE_V2:"true"ALLOW_NONE_AUTHENTICATION:"yes"ETCD_ADVERTISE_CLIENT_URLS:"http://etcd:2379" #https://github.com/apache/apisix-dashboard/issues/2756 需要更换为host域名不能使用0.0.0.0
          ETCD_LISTEN_CLIENT_URLS: "http://0.0.0.0:2379"ports:- "2379:2379/tcp"networks:

          caseor_bridge:

                ipv4_address:172.0.10.8apisix:

        container_name: apisix

        hostname: apisix

        image: apache/apisix        

        volumes:- ./apisix/log:/usr/local/apisix/logs- ./apisix/conf/config.yaml:/usr/local/apisix/conf/config.yaml:ro

        depends_on:-etcd

        ports:- "9088:9088/tcp"
          - "9180:9180/tcp"
          - "127.0.0.1:9090:9090/tcp"networks:

          caseor_bridge:

                ipv4_address:172.0.10.9apisix-dashboard:

        container_name: apisix-dashboard

        image: apache/apisix-dashboard

        depends_on:-etcd

        ports:- "9188:9188"volumes:- ./apisix/conf/dashboard.yaml:/usr/local/apisix-dashboard/conf/conf.yaml

        networks:

          caseor_bridge:

                ipv4_address:172.0.10.10rabbitmq01:

      image: rabbitmq

      container_name: rabbitmq01

      hostname: rabbitmq01

      environment:- TZ=Asia/Shanghai- RABBITMQ_DEFAULT_USER=root   #自定义登录账号- RABBITMQ_DEFAULT_PASS=123456#自定义登录密码- RABBITMQ_ERLANG_COOKIE='secret_cookie'ports:- "15672:15672"
        - "5672:5672"volumes:- ./rabbitmq/mq1/data:/var/lib/rabbitmq- ./rabbitmq/mq1/conf:/etc/rabbitmq

      command:  bash-c "sleep 10; rabbitmq-server;"networks:

        caseor_bridge:

            ipv4_address:172.0.10.11rabbitmq02:

      image: rabbitmq

      container_name: rabbitmq02

      hostname: rabbitmq02

      environment:- TZ=Asia/Shanghai- RABBITMQ_DEFAULT_USER=root   #自定义登录账号- RABBITMQ_DEFAULT_PASS=123456#自定义登录密码- RABBITMQ_ERLANG_COOKIE='secret_cookie'ports:- "15673:15672"
        - "5673:5672"depends_on:-rabbitmq01

      volumes:- ./rabbitmq/mq2/data:/var/lib/rabbitmq- ./rabbitmq/mq2/conf:/etc/rabbitmq

      command:  bash-c "sleep 10; rabbitmq-server;"networks:

        caseor_bridge:

            ipv4_address:172.0.10.12rabbitmq03:

      image: rabbitmq

      container_name: rabbitmq03

      hostname: rabbitmq03

      environment:- TZ=Asia/Shanghai- RABBITMQ_DEFAULT_USER=root   #自定义登录账号- RABBITMQ_DEFAULT_PASS=123456#自定义登录密码- RABBITMQ_ERLANG_COOKIE='secret_cookie'ports:- "15674:15672"
        - "5674:5672"depends_on:-rabbitmq01

      volumes:- ./rabbitmq/mq3/data:/var/lib/rabbitmq- ./rabbitmq/mq3/conf:/etc/rabbitmq

      command:  bash-c "sleep 10; rabbitmq-server;"networks:

        caseor_bridge:

            ipv4_address:172.0.10.13# 开启web管理 

# rabbitmq-plugins enable rabbitmq_management 



# # 加入rabbitmq集群



# # rabbit1

# rabbitmqctl stop_app

# rabbitmqctl reset

# rabbitmqctl start_app



# # rabbit2

# rabbitmqctl stop_app

# rabbitmqctl reset

# rabbitmqctl join_cluster--ram rabbit@rabbit1

# rabbitmqctl start_app



# # rabbit3

# rabbitmqctl stop_app

# rabbitmqctl reset

# rabbitmqctl join_cluster--ram rabbit@rabbit1

# rabbitmqctl start_app

View Code

使用docker启动mysql

mysql:

        container_name: mysql

        image: mysql

        privileged:truecommand:--character-set-server=utf8mb4 --collation-server=utf8mb4_general_ci --max_connections=2000 --max_allowed_packet=64M

        environment:- TZ=Asia/Shanghai- MYSQL_ROOT_PASSWORD=123456volumes:- ./mysql:/var/lib/mysql

        ports:- "3306:3306"healthcheck:

          test: ["CMD", "mysqladmin" ,"ping", "-h", "localhost"]

          interval: 5s

          timeout: 10s

          retries:10networks:

          caseor_bridge:

            ipv4_address:172.0.10.3

View Code

在数据库创建nacos数据库

https://github.com/alibaba/nacos/blob/master/config/src/main/resources/META-INF/nacos-db.sql

准备三个nacos

nacos1:

        container_name: nacos1

        hostname: nacos1

        image: nacos/nacos-server

        environment:- MODE=cluster- PREFER_HOST_MODE=hostname- NACOS_SERVERS=nacos1:8848 nacos2:8848 nacos3:8848
            - SPRING_DATASOURCE_PLATFORM=mysql- MYSQL_SERVICE_HOST=172.0.10.3
            - MYSQL_SERVICE_PORT=3306
            - MYSQL_SERVICE_USER=root- MYSQL_SERVICE_PASSWORD=123456
            - MYSQL_SERVICE_DB_NAME=nacos- MYSQL_SERVICE_DB_PARAM=characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC&allowPublicKeyRetrieval=true  
            - JVM_XMS=128m- JVM_XMX=128m- JVM_XMN=128m

        volumes:- ./nacos/cluster-logs/nacos1:/home/nacos/logs- ./nacos/init.d:/home/nacos/init.d

        ports:- 8850:8848
            - 7850:7848     
            - 9870:9848
            - 9852:9849depends_on:-mysql

        networks:

          caseor_bridge:

                ipv4_address:172.0.10.5nacos2:

        container_name: nacos2

        hostname: nacos2

        image: nacos/nacos-server

        environment:- MODE=cluster- PREFER_HOST_MODE=hostname- NACOS_SERVERS=nacos1:8848 nacos2:8848 nacos3:8848
            - SPRING_DATASOURCE_PLATFORM=mysql- MYSQL_SERVICE_HOST=172.0.10.3
            - MYSQL_SERVICE_PORT=3306
            - MYSQL_SERVICE_USER=root- MYSQL_SERVICE_PASSWORD=123456
            - MYSQL_SERVICE_DB_NAME=nacos- MYSQL_SERVICE_DB_PARAM=characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC&allowPublicKeyRetrieval=true  
            - JVM_XMS=128m- JVM_XMX=128m- JVM_XMN=128m

        volumes:- ./nacos/cluster-logs/nacos2:/home/nacos/logs- ./nacos/init.d:/home/nacos/init.d

        ports:- 8849:8848
            - 7849:7848     
            - 9869:9848
            - 9851:9849depends_on:-mysql

        networks:

          caseor_bridge:

                ipv4_address:172.0.10.6nacos3:

        container_name: nacos3

        hostname: nacos3

        image: nacos/nacos-server

        environment:- MODE=cluster- PREFER_HOST_MODE=hostname- NACOS_SERVERS=nacos1:8848 nacos2:8848 nacos3:8848
            - SPRING_DATASOURCE_PLATFORM=mysql- MYSQL_SERVICE_HOST=172.0.10.3
            - MYSQL_SERVICE_PORT=3306
            - MYSQL_SERVICE_USER=root- MYSQL_SERVICE_PASSWORD=123456
            - MYSQL_SERVICE_DB_NAME=nacos- MYSQL_SERVICE_DB_PARAM=characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC&allowPublicKeyRetrieval=true  
            - JVM_XMS=128m- JVM_XMX=128m- JVM_XMN=128m

        volumes:- ./nacos/cluster-logs/nacos3:/home/nacos/logs- ./nacos/init.d:/home/nacos/init.d

        ports:- 8848:8848
            - 7848:7848     
            - 9848:9848
            - 9849:9849depends_on:-mysql

        networks:

          caseor_bridge:

                ipv4_address:172.0.10.7

具体配置可以参考官网

查看nacos 控制台
http://127.0.0.1:8848/nacos/
，
http://127.0.0.1:8849/nacos/
，
http://127.0.0.1:8850/nacos/

可以看到集群已经搭建完成了

在.net core中使用nacos

https://github.com/nacos-group/nacos-sdk-csharp

nacos-sdk-csharp.AspNetCore

nacos-sdk-csharp.Extensions.Configuration

在appsettings.json中新增Nacos配置

  "Nacos": {"ServerAddresses": [ "http://192.168.110.39:8848"],//命名空间GUID,public默认没有
    "Namespace": "779857e5-b517-437c-9026-f04c98d4bac1",//配置中心
    "Listeners": [

      {"Group": "DEFAULT_GROUP","DataId": "appsettings.json","Optional": false}

    ],//服务发现
    "ServiceName": "saas-system","GroupName": "DEFAULT_GROUP"}

在program下新增

//读取nacos配置文件
builder.Host.UseNacosConfig("Nacos");//注册服务到nacos
builder.Services.AddNacosAspNet(builder.Configuration, "Nacos");

在program下继续读取appsettings的配置信息，首选需要在nacos上的appsettings配置信息

启动该服务

dotnet run --urls=http://*:8083
dotnet run --urls=http://*:8084
dotnet run --urls=http://*:8085

在其他服务中调用当前服务接口

 [HttpGet("nacos.test")]public async Task<IActionResult>TestNacos()

 {var instance= await _namingService.SelectOneHealthyInstance("saas-system", "DEFAULT_GROUP");var host = $"{instance.Ip}:{instance.Port}";var baseUrl = instance.Metadata.TryGetValue("secure", out_)? $"https://{host}": $"http://{host}";var url = $"{baseUrl}/system/tenant.package.query.list";using HttpClient client = new();var result = awaitclient.GetAsync(url);return Ok(awaitresult.Content.ReadAsStringAsync());



 }

.net core微服务之服务发现

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