Nacos installation and pit stepping

Preface ：
springcloud alibaba And springboot For version selection, please refer to the official address （ Click on the version description ） ：https://github.com/alibaba/spring-cloud-alibaba/wiki

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1.windows edition

1. Download from official website https://nacos.io/zh-cn/docs/quick-start.html

Choose the version you want


After downloading, directly unzip it to the customized directory .

2. Startup and possible errors
Stand alone start ： Go to the installation directory /bin Under the table of contents ,shell Execute... In the window startup.cmd -m standalone （ Default password nacos nacos）

1. The default is cluster startup , No addition standalone Will report a mistake
2. If it changes /conf In the catalog application.properties, Remember to execute nacos-mysql.sql and 1.4.0-ipv6_support-update.sql

4. I encountered an embarrassing pit during the test , When building a multi-level directory structure , The business module added pom , Lead to double-screen Start registration naocs Failure ...
Param 'serviceName' is illegal, serviceName is blank

<!--springboot 2.4 After that, it will not be loaded by default bootstrap.yml, If you need to load bootstrap  Files need to be manually added with dependencies -->
    <dependency>
       <groupId>org.springframework.cloud</groupId>
       <artifactId>spring-cloud-starter-bootstrap</artifactId>
    </dependency>

3. To configure Nacos config And errors encountered （ Procedural issues , Understanding can ）

1.pom Add to file maven rely on

<!--nacos Configuration center -->
    <dependency>
       <groupId>com.alibaba.cloud</groupId>
       <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
    </dependency>

An exception occurred when the startup class was started ：

c.a.nacos.client.security.SecurityProxy  : [SecurityProxy] login http request failed url: http://tz-nacos:8848/nacos/v1/auth/users/login, params: {
    username=nacos}, bodyMap: {
    password=}, errorMsg: errCode: 100, errMsg: Nacos serialize for class [com.alibaba.nacos.common.http.HttpRestResult] failed.

as a result of config hinder dataid The configuration should be the same as the service name , example ： - data-id: ${spring.application.name}.yml

If appear 403 Error of , It is estimated that permission control is enabled ,bootstrap.yml in nacos To add an account and password !
Example of configuration results ：

server:
  port: 17888

spring:
  application:
    name: double-screen-service
  cloud:
    nacos:
      server-addr: tz-nacos:8848
      username: nacos
      password: tz123456
      config:
        file-extension: yaml
        namespace: public
        #  notes : Be sure to group here according to your own , I've been here for a long time ..
        group: tz4cloud