8. Registration Center/Configuration Center-Nacos

1.Nacos

        I have used the eureka registration center of spring cloud before, and the configuration is a bit cumbersome; nacos is a component developed by Ali that provides registration center and configuration center functions, and the operation is much simpler

1.1 Nacos download

Nacos Quick Start This quick start manual is to help you quickly download, install and use Nacos on your computer. https://nacos.io/zh-cn/docs/quick-start.html         start command

startup.cmd -m standalone

        close command

shutdown.cmd 

1.2 Nacos Registration Center

        Import the Nacos Service Discovery dependency when creating a project. The Nacos configuration class will be automatically generated under the project. If it is not generated, you need to add the annotation @EnableDiscoveryClient to the main startup class

        Configure the main configuration

server:
  port: 8081
spring:
  application:
    name: goods
  cloud:
    nacos:
      discovery:
        server-addr: 192.168.74.146:8848

        Start the microservice, open localhost:8848/nacos, if there is the microservice in the service after login, the configuration is successful

1.3 Nacos Configuration Center 

        First clear the content in the main configuration file that comes with it

        Then create a new bootstrap.yml configuration file (this configuration file is before the traditional configuration file and has a higher priority)

spring:
  cloud:
    nacos:
      discovery:
        server-addr: 192.168.5.225:8848
        username: nacos
        password: nacos
      config:
        file-extension: yaml       #yaml就是yml    要获取配置信息的后缀名
        group: wuye    
        namespace: 330d5266-2f60-48ed-b215-1cb2359d6843           #命名空间id
  profiles:
    active: dev     #获取哪个环境的配置信息    dev：开发、test：测试、pro：生产
  application:
    name: user
#user-dev.yaml   配置文件名（官方规定格式）

        Then configure it in the nacos webpage

        Start the microservice and the configuration is successful

        [Different projects can be configured with different groups]