docker swarm部署spring cloud服务

一、准备docker swarm的集群环境

ip	是否主节点
192.168.91.13	是
192.168.91.43	否

二、准备微服务

①eureka服务 application.yml配置

server:
  port: 8761

eureka:
  client:
    register-with-eureka: false
    fetch-registry: false
    service-url:
      defaultZone: http://localhost:8761/eureka
  instance:
    hostname: localhost

java代码略...

②microserviceone服务 application.yml配置

spring:
  application:
    name: serviceone
  resources:
    static-locations: file:/home/front
  profiles:
    active: pro

server:
  port: 8080

ribbon:
  eureka:
    enabled: true

---
spring:
  profiles: dev
eureka:
  client:
    service-url:
      defaultZone: http://localhost:8761/eureka
    fetch-registry: true
  instance:
    prefer-ip-address: true


---
# docker 环境下使用此配置

spring:
  profiles: pro
  cloud:
    inetutils:
      preferred-networks: 10.0.0 #正则匹配10.0.0开头的网卡ip
eureka:
  client:
    service-url:
      defaultZone: http://discovery:8761/eureka
    fetch-registry: true
  instance:
    prefer-ip-address: true

java代码略...

③microservicetwo服务 application.yml配置

server:
  port: 8081

spring:
  application:
    name: servicetwo
  profiles:
    active: pro

ribbon:
  eureka:
    enabled: true


---
spring:
  profiles: dev
eureka:
  client:
    service-url:
      defaultZone: http://localhost:8761/eureka
    fetch-registry: true
  instance:
    prefer-ip-address: true


---

# docker 环境下使用此配置

spring:
  profiles: pro
  cloud:
    inetutils:
      preferred-networks: 10.0.0 #正则匹配10.0.0开头的网卡ip
eureka:
  client:
    service-url:
      defaultZone: http://discovery:8761/eureka
    fetch-registry: true
  instance:
    prefer-ip-address: true

java代码略...

重点配置：

　　preferred-networks： 指定向eureka注册时使用的网卡地址（需要能够被其他微服务访问的ip，微服务间不能访问很可能是注册的网卡ip不对）

　　defaultZone: 使用服务的方式指定eureka地址，这里的discovery服务是在deploy.yml配置文件中指定的服务名

　　prefer-ip-address: eureka上使用ip地址注册

应用间关系：

　　microserviceone、microservicetwo微服务向discovery服务进行注册

　　microserviceone通过feign调用microservicetwo的接口

// Feign接口
@FeignClient("servicetwo")
public interface DemoFeignService {

    @RequestMapping(method= RequestMethod.GET,value = "/userlist")
    @ResponseBody List getUserList();
}

---------------------------------------分割线----------------------------------------

//microserviceone中的controller方法
@Autowired
    private DemoFeignService demoFeignService;

    @RequestMapping(method = RequestMethod.GET,value = "invocation")
    public String testInvoke(){
        List list = demoFeignService.getUserList();
        String result = JSONObject.toJSONString(list);
        return "SUCCESS: " + result;
    }

 三、编写docker-compose配置文件

deploy.yml

version: "3"
services:
  discovery:      # 其他微服务可以通过服务名访问此服务，如服务注册http://discovery:8761/eureka
    image: registry.cn-hangzhou.aliyuncs.com/study1990/discovery:1.0
    deploy:
      replicas: 1   #定义 replicated 模式的服务的复本数量
      update_config:
        parallelism: 1    #每次更新复本数量
        delay: 2s       #每次更新间隔
      restart_policy:
        condition: on-failure     #定义服务的重启条件
    networks:
      - eureka-net
    ports:
      - "8761:8761"
    # environment:
      # - spring.profiles.active=peer1
  serviceone: # 微服务1
    image: registry.cn-hangzhou.aliyuncs.com/study1990/simple-microserviceone:1.0
    deploy:
      replicas: 1   #定义 replicated 模式的服务的复本数量
      update_config:
        parallelism: 1    #每次更新复本数量
        delay: 2s       #每次更新间隔
      restart_policy:
        condition: on-failure     #定义服务的重启条件
    networks:
      - eureka-net
    ports:
      - "8080:8080"
    environment:
      - spring.profiles.active=pro
    depends_on:
      - discovery #依赖服务
  servicetwo:
    image: registry.cn-hangzhou.aliyuncs.com/study1990/simple-microservicetwo:1.0
    deploy:
      replicas: 1   #定义 replicated 模式的服务的复本数量
      update_config:
        parallelism: 1    #每次更新复本数量
        delay: 2s       #每次更新间隔
      restart_policy:
        condition: on-failure     #定义服务的重启条件
    networks:
      - eureka-net
    ports:
      - "8081:8081"
    environment:
      - spring.profiles.active=pro
    depends_on:
      - discovery
networks:
  eureka-net:            # 创建网络
    driver: overlay

四、部署

　　1、在docker swarm主节点上执行 docker stack deploy -c deploy.yml microservice 创建名为microservice的stack服务

　　2、docker stack ps microservice查看docker服务情况

　　

　　3、其他相关命令

　　　　　　docker stack rm microservice　　删除名为microservice的stack服务

　　　　　　docker service ls 查看服务列表

五、常用中间件的容器部署

mysql

version: "3"
services:
  mysql:
    image: mysql:5.7
    deploy:
      replicas: 1
      update_config:
        parallelism: 1    #每次更新复本数量
        delay: 2s       #每次更新间隔
      restart_policy:
        condition: on-failure     #定义服务的重启条件
    networks:
      - eureka-net
    ports:
      - "3306:3306"
    environment:
      MYSQL_ROOT_PASSWORD: "111111"
    volumes:
      - "/root/docker/app/mysql/config:/etc/mysql/conf.d"       #配置文件位置 my.cnf
      - "/root/docker/app/mysql/data:/var/lib/mysql"  #数据文件位置

networks:
  eureka-net:            # 创建网络
    driver: overlay

　　

nginx

version: "3"
services:
  nginx:
    image: nginx:1.12
    deploy:
      replicas: 1
      update_config:
        parallelism: 1    #每次更新复本数量
        delay: 2s       #每次更新间隔
      restart_policy:
        condition: on-failure     #定义服务的重启条件
    networks:
      - eureka-net
    ports:
      - "80:80"
    volumes:
     - "/root/docker/app/nginx/html:/usr/share/nginx/html"  #挂载宿主机的html目录覆盖容器的html目录
     - "/root/docker/app/nginx/config/nginx.conf:/etc/nginx/nginx.conf" #挂载宿主机的nginx.conf覆盖容器中的nginx.conf
     - "/root/docker/app/nginx/logs:/var/log/nginx" 

networks:
  eureka-net:            # 创建网络
    driver: overlay

　　

其他

1、查看docker swarm错误日志

docker service ps --no-trunc {service_name}

2、镜像下载加速

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://1rght005.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker