第二篇 Spring Cloud Alibaba Nacos服务注册和配置中心

川长思鸟来 2022-12-01 12:23 121阅读 0赞

## 1.Nacos简介 ##

### 1.1为什么叫Nacos ###

前四个字母分别为Naming和Configuration的前两个字母，最后的s为Service

### 1.2是什么 ###

一个更易于构建云原生应用的动态服务发现，配置管理和服务管理中心

Nacos：Dynamic Naming and Configuration Service

Nacos就是注册中心+配置中心的组合

等价于 Nacos = Eureka+Config+Bus

### 1.3能干什么 ###

替代Eureka做服务注册中心

替代Config做服务配置中心

### 1.4去哪下 ###

[https://github.com/alibaba/Nacos][https_github.com_alibaba_Nacos]

官网文档

[https://nacos.io/zh-cn/index.html][https_nacos.io_zh-cn_index.html]

### 1.5各种注册中心比较 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center]

## 2.安装并运行Nacos ##

(1).本地Java8+Maven环境已经OK

(2).官网下载当前最新的稳定版本[https://github.com/alibaba/nacos/releases][https_github.com_alibaba_nacos_releases]

(3).解压安装包，直接运行bin目录下的startup.cmd

(4)默认账号密码都是nacos ,命令运行成功后直接访问http://localhost:8848/nacos  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 1]

## 3.Nacos作为服务注册中心演示 ##

### 3.1基于Nacos的服务提供者 ###

#### 3.1.1新建Maven Module ####

spring-cloud-alibaba-learn

#### 3.1.2POM ####

父POM

<properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <maven.compiler.source>1.8</maven.compiler.source>
            <maven.compiler.target>1.8</maven.compiler.target>
            <junit.version>4.12</junit.version>
    
            <lombok.version>1.16.18</lombok.version>
    
    
    
        </properties>
    
        
        <dependencyManagement>
            <dependencies>
                
                <dependency>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-dependencies</artifactId>
                    <version>2.2.2.RELEASE</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
                
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Hoxton.SR1</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
                
                <dependency>
                    <groupId>com.alibaba.cloud</groupId>
                    <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                    <version>2.1.0.RELEASE</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
    
    
    
    
    
    
    
    
    
    
                <dependency>
                    <groupId>org.mybatis.spring.boot</groupId>
                    <artifactId>mybatis-spring-boot-starter</artifactId>
                    <version>${mybatis.spring.boot.version}</version>
                </dependency>
                <dependency>
                    <groupId>junit</groupId>
                    <artifactId>junit</artifactId>
                    <version>${junit.version}</version>
                </dependency>
    
    
    
    
    
                <dependency>
                    <groupId>org.projectlombok</groupId>
                    <artifactId>lombok</artifactId>
                    <version>${lombok.version}</version>
                    <optional>true</optional>
                </dependency>
            </dependencies>
        </dependencyManagement>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                    <configuration>
                        <fork>true</fork>
                        <addResources>true</addResources>
                    </configuration>
                </plugin>
            </plugins>
        </build>

新建cloudalibaba-provider模板

本模块pom

<dependencies>
            
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <optional>true</optional>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
        </dependencies>

#### 3.1.3配置文件 ####

application.properties

server.port=8080
    spring.cloud.nacos.discovery.server-addr=localhost:8848
    spring.application.name=service-provider
    management.endpoints.web.exposure.exclude=*

#### 3.1.4主启动类 ####

import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
    
    /** * create date 2020-08-25 14:13 by niugang */
    @EnableDiscoveryClient
    @SpringBootApplication
    public class PaymentApplication
    { 
        public static void main(String[] args) { 
                SpringApplication.run(PaymentApplication.class, args);
        }
    }

#### 3.1.5业务类 ####

@RestController
    public class PaymentController
    { 
        @Value("${server.port}")
        private String serverPort;
    
        @GetMapping(value = "/payment/nacos/{id}")
        public String getPayment(@PathVariable("id") Integer id)
        { 
            return "nacos registry, serverPort: "+ serverPort+"\t id"+id;
        }
    }

#### 3.1.6测试 ####

浏览器[http://localhost:8080/payment/nacos/1][http_localhost_8080_payment_nacos_1]

![在这里插入图片描述][20200827085914621.png_pic_center]  
nacos控制台  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 2]  
nacos服务注册中心+服务提供者8080都已经好了

### 3.2基于Nacos的服务消费者 ###

#### 3.2.1新建Maven Module ####

cloudalibaba-consumer-nacos

#### 3.2.2POM ####

<dependencies>
            
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
            </dependency>
    
    
    
    
    
    
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <optional>true</optional>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
        </dependencies>

#### 3.2.3配置文件 ####

server.port=8083
    # nacos-server 地址
    spring.cloud.nacos.discovery.server-addr=localhost:8848
    spring.application.name=cloudalibaba-consumer-nacos
    management.endpoints.web.exposure.exclude=*
    #消费者将要去访问的微服务名称(注册成功进nacos的微服务提供者)
    service-url.cloudalibaba-provider=http://cloudalibaba-provider

#### 3.2.4主启动类 ####

/** * create date 2020-08-25 16:06 by niugang */
    @SpringBootApplication
    @EnableDiscoveryClient
    public class ConsumerApplication { 
    
        public static void main(String[] args) { 
            SpringApplication.run(ConsumerApplication.class, args);
        }
    
    
        /** * RestTemplate负载均衡配置 * @return RestTemplate */
        @Bean
        @LoadBalanced
        public RestTemplate getRestTemplate()
        { 
            return new RestTemplate();
        }
    
    }

#### 3.2.5业务类 ####

/** * create date 2020-08-25 16:13 by niugang */
    @RestController
    @Slf4j
    public class OrderNacosController
    { 
        @Resource
        private RestTemplate restTemplate;
    
        @Value("${service-url.cloudalibaba-provider}")
        private String serverURL;
    
        @GetMapping(value = "/consumer/payment/nacos/{id}")
        public String paymentInfo(@PathVariable("id") Long id)
        { 
            return restTemplate.getForObject(serverURL+"/payment/nacos/"+id,String.class);
        }
    
    }

#### 3.2.6测试 ####

测试之前，先把服务提供者启动两个实例，通过idea修改端口是最近简单的方式  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 3]  
nacos控制台  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 4]  
通过浏览器访问  
![在这里插入图片描述][20200827094232746.png_pic_center]  
![在这里插入图片描述][20200827094407724.png_pic_center]

### 3.3服务注册中心对比 ###

#### 3.3.1Nacos全景图所示 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 5]

#### 3.3.2Nacos和CAP ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 6]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 7]

#### 3.3.4Nacos支持AP和CP模式的切换 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 8]  
curl -X PUT ‘$NACOS\_SERVER:8848/nacos/v1/ns/operator/switches?entry=serverMode&value=CP’

## 4.Nacos作为服务配置中心演示 ##

### 4.1Nacos作为配置中心-基础配置 ###

#### 4.1.1新建Maven Module ####

cloudalibaba-config-nacos-client

#### 4.1.2POM ####

<dependencies>
            
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
            </dependency>
            
    
    
    
    
    
    
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <optional>true</optional>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
        </dependencies>

#### 4.1.3配置文件 ####

为什么需要两个配置文件，一个bootstrap.properties 一个application.properties

Nacos同spring-cloud-config一样，在项目初始化时，要保证先从配置中心进行配置拉取，拉取配置之后，才能保证项目的正常启动。

Spring Boot中配置文件的加载是存在优先级顺序的，bootstrap优先级高于application

**bootstrap.properties**

**application.properties**

spring.profiles.active=dev
    # 业务测试键值对
    config.info=test

#### 4.1.4主启动类 ####

import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
    
    /** * create date 2020-08-26 15:40 by niugang */
    @EnableDiscoveryClient
    @SpringBootApplication
    public class ConfigApplication { 
    
        public static void main(String[] args) { 
            SpringApplication.run(ConfigApplication.class, args);
        }
    
    }

#### 4.1.5业务类 ####

import org.springframework.beans.factory.annotation.Value;
    import org.springframework.cloud.context.config.annotation.RefreshScope;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    /** * create date 2020-08-26 15:41 by niugang */
    @RestController
    @RefreshScope
    public class ConfigController { 
        @Value("${config.info}")
        private String configInfo;
    
        @GetMapping("/config/info")
        public String getConfigInfo() { 
            return "nacos 配置信息为:["+configInfo+"]";
        }
    }

@RefreshScope :通过Spring Cloud原生注解@RefreshScope实现配置自动更新

#### 4.1.6在Nacos中添加配置信息 ####

##### 4.1.6.1Nacos中的匹配规则 #####

###### 4.1.6.1.1理论 ######

Nacos中的dataid的组成格式与SpringBoot配置文件中的匹配规则

官网介绍地址：[ https://nacos.io/zh-cn/docs/quick-start-spring-cloud.html][https_nacos.io_zh-cn_docs_quick-start-spring-cloud.html]

> 在 Nacos Spring Cloud 中，`dataId` 的完整格式如下：
> 
>     ${prefix}-${spring.profiles.active}.${file-extension}
> 
>  *  `prefix` 默认为 `spring.application.name` 的值，也可以通过配置项 `spring.cloud.nacos.config.prefix`来配置。
>  *  `spring.profiles.active` 即为当前环境对应的 profile，详情可以参考 [Spring Boot文档][Spring Boot]。 **注意：当 spring.profiles.active 为空时，对应的连接符 - 也将不存在，dataId 的拼接格式变成  p r e f i x . \{prefix\}. prefix.\{file-extension\}**
>  *  `file-exetension` 为配置内容的数据格式，可以通过配置项 `spring.cloud.nacos.config.file-extension` 来配置。目前只支持 `properties` 和 `yaml` 类型。

![在这里插入图片描述][20200827123858389.png_pic_center]  
最后dataid配置公式：

s p r i n g . a p p l i c a t i o n . n a m e − \{spring.application.name\}- spring.application.name−\{spring.profiles.active\}.$\{spring.cloud.nacos.config.file-extension\}

###### 4.1.6.1.2实操 ######

**新增配置**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 9]  
**Nacos界面配置对应**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 10]  
**小结说明**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 11]\#\#\#\# 4.1.7测试

运行cloud-config-nacos-client的主启动类

访问：[http://localhost:3377/config/info][http_localhost_3377_config_info]

返回如下信息：  
![在这里插入图片描述][2020082712402522.png_pic_center]  
在nacos配置界面配置如下信息：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 12]  
再次访问上面地址，返回如下信息：  
![在这里插入图片描述][2020082712405938.png_pic_center]  
**自带动态刷新**

修改下Nacos中的properties配置文件，再次调用查看配置的接口，就会发现配置已经刷新

### 4.2Nacos作为配置中心-分类配置 ###

#### 4.2.1问题?多环境多项目管理 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 13]\#\#\#\# 4.2.2Nacos的图形化管理界面

##### 4.2.2.1配置管理 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 14]

##### 4.2.2.2命名空间 #####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 15]

#### 4.2.3Namespace+Group+Data ID三者关系？为什么这么设计？ ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 16]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 17]

#### 4.2.4案例 ####

##### 4.2.4.1DataID方案 #####

指定spring.profile.active和配置文件的DataID来使不同环境下读取不同的配置

默认空间+默认分组+新建dev和test两个DataID

**新建dev配置DataID**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 18]  
**新建test配置DataID**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 19]通过spring.profile.active属性就能进行多环境下配置文件的读取  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 20]  
测试

浏览器输入：[http://localhost:3377/config/info][http_localhost_3377_config_info]

页面输出结果为test内容  
![在这里插入图片描述][20200827124400750.png_pic_center]

##### 4.2.4.2Group方案 #####

**通过Group实现环境区分**

新建Group

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 21]在nacos图形界面控制台上面新建配置文件DataID  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 22]配置修改  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 23]测试  
![在这里插入图片描述][20200827124530438.png_pic_center]

#### 4.2.5Namespace方案 ####

**新建dev/test的Namespace**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 24]  
**回到服务管理-服务列表查看**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 25]**按照域名配置填写**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 26]**配置修改**

# 服务端口
    server.port=3377
    # 服务名
    spring.application.name=nacos-config-client
    #服务注册中心地址
    spring.cloud.nacos.discovery.server-addr=localhost:8848
    # 配置中心地址
    spring.cloud.nacos.config.server-addr=localhost:8848
    # 配置内容的数据格式
    spring.cloud.nacos.config.file-extension=properties
    # 默认组名为 DEFAULT_GROUP
    #spring.cloud.nacos.config.group=DEV_GROUP
    ###名称空间，不同环境的分离配置
    ### 切记这块填写的是 命名空间ID
    spring.cloud.nacos.config.namespace=558fcc92-0a28-4f80-bcfc-e6aa1de6b42b

spring.cloud.nacos.config.namespace对应的值为命名空间ID

测试  
![在这里插入图片描述][20200827124657552.png_pic_center]

## 5.Nacos集群和持久化配置（重要） ##

### 5.1官网说明 ###

官方文档地址:[https://nacos.io/zh-cn/docs/cluster-mode-quick-start.html][https_nacos.io_zh-cn_docs_cluster-mode-quick-start.html]

#### 5.1.1官网架构图 ####

集群部署架构图

因此开源的时候推荐用户把所有服务列表放到一个vip下面，然后挂到一个域名下面

[http://ip1][http_ip1]:port/openAPI 直连ip模式，机器挂则需要修改ip才可以使用。

[http://VIP][http_VIP]:port/openAPI 挂载VIP模式，直连vip即可，下面挂server真实ip，可读性不好。

[http://nacos.com][http_nacos.com]:port/openAPI 域名 + VIP模式，可读性好，而且换ip方便，推荐模式  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 27]

#### 5.1.2上图官网翻译，真实情况 ####

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 28]  
![在这里插入图片描述][20200827131309318.png_pic_center]

#### 5.1.3说明 ####

以下截图说明来自官网：[https://nacos.io/zh-cn/docs/deployment.html][https_nacos.io_zh-cn_docs_deployment.html]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 29]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 30]\#\#\# 5.2Nacos持久化配置解释

#### 5.2.1Nacos默认自带的是嵌入式数据库derby ####

[https://github.com/alibaba/nacos/blob/develop/config/pom.xml][https_github.com_alibaba_nacos_blob_develop_config_pom.xml]

#### 5.2.2derby到mysql切换配置步骤 ####

(1).nacos-server-1.2.0\\nacos\\conf目录下找到sql脚本

**nacos-mysql.sql**

(2).具体执行的脚本

/*以下两句为自己加的*/
    CREATE DATABASE nacos_config  CHARACTER SET utf8 ;
    USE nacos_config;
    
    /******************************************/
    /* 数据库全名 = nacos_config */
    /* 表名称 = config_info */
    /******************************************/
    CREATE TABLE `config_info` (
      `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'id',
      `data_id` varchar(255) NOT NULL COMMENT 'data_id',
      `group_id` varchar(255) DEFAULT NULL,
      `content` longtext NOT NULL COMMENT 'content',
      `md5` varchar(32) DEFAULT NULL COMMENT 'md5',
      `gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
      `gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '修改时间',
      `src_user` text COMMENT 'source user',
      `src_ip` varchar(20) DEFAULT NULL COMMENT 'source ip',
      `app_name` varchar(128) DEFAULT NULL,
      `tenant_id` varchar(128) DEFAULT '' COMMENT '租户字段',
      `c_desc` varchar(256) DEFAULT NULL,
      `c_use` varchar(64) DEFAULT NULL,
      `effect` varchar(64) DEFAULT NULL,
      `type` varchar(64) DEFAULT NULL,
      `c_schema` text,
      PRIMARY KEY (`id`),
      UNIQUE KEY `uk_configinfo_datagrouptenant` (`data_id`,`group_id`,`tenant_id`)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='config_info';
    
    /******************************************/
    /* 数据库全名 = nacos_config */
    /* 表名称 = config_info_aggr */
    /******************************************/
    CREATE TABLE `config_info_aggr` (
      `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'id',
      `data_id` varchar(255) NOT NULL COMMENT 'data_id',
      `group_id` varchar(255) NOT NULL COMMENT 'group_id',
      `datum_id` varchar(255) NOT NULL COMMENT 'datum_id',
      `content` longtext NOT NULL COMMENT '内容',
      `gmt_modified` datetime NOT NULL COMMENT '修改时间',
      `app_name` varchar(128) DEFAULT NULL,
      `tenant_id` varchar(128) DEFAULT '' COMMENT '租户字段',
      PRIMARY KEY (`id`),
      UNIQUE KEY `uk_configinfoaggr_datagrouptenantdatum` (`data_id`,`group_id`,`tenant_id`,`datum_id`)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='增加租户字段';
    
    
    /******************************************/
    /* 数据库全名 = nacos_config */
    /* 表名称 = config_info_beta */
    /******************************************/
    CREATE TABLE `config_info_beta` (
      `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'id',
      `data_id` varchar(255) NOT NULL COMMENT 'data_id',
      `group_id` varchar(128) NOT NULL COMMENT 'group_id',
      `app_name` varchar(128) DEFAULT NULL COMMENT 'app_name',
      `content` longtext NOT NULL COMMENT 'content',
      `beta_ips` varchar(1024) DEFAULT NULL COMMENT 'betaIps',
      `md5` varchar(32) DEFAULT NULL COMMENT 'md5',
      `gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
      `gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '修改时间',
      `src_user` text COMMENT 'source user',
      `src_ip` varchar(20) DEFAULT NULL COMMENT 'source ip',
      `tenant_id` varchar(128) DEFAULT '' COMMENT '租户字段',
      PRIMARY KEY (`id`),
      UNIQUE KEY `uk_configinfobeta_datagrouptenant` (`data_id`,`group_id`,`tenant_id`)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='config_info_beta';
    
    /******************************************/
    /* 数据库全名 = nacos_config */
    /* 表名称 = config_info_tag */
    /******************************************/
    CREATE TABLE `config_info_tag` (
      `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'id',
      `data_id` varchar(255) NOT NULL COMMENT 'data_id',
      `group_id` varchar(128) NOT NULL COMMENT 'group_id',
      `tenant_id` varchar(128) DEFAULT '' COMMENT 'tenant_id',
      `tag_id` varchar(128) NOT NULL COMMENT 'tag_id',
      `app_name` varchar(128) DEFAULT NULL COMMENT 'app_name',
      `content` longtext NOT NULL COMMENT 'content',
      `md5` varchar(32) DEFAULT NULL COMMENT 'md5',
      `gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
      `gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '修改时间',
      `src_user` text COMMENT 'source user',
      `src_ip` varchar(20) DEFAULT NULL COMMENT 'source ip',
      PRIMARY KEY (`id`),
      UNIQUE KEY `uk_configinfotag_datagrouptenanttag` (`data_id`,`group_id`,`tenant_id`,`tag_id`)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='config_info_tag';
    
    /******************************************/
    /* 数据库全名 = nacos_config */
    /* 表名称 = config_tags_relation */
    /******************************************/
    CREATE TABLE `config_tags_relation` (
      `id` bigint(20) NOT NULL COMMENT 'id',
      `tag_name` varchar(128) NOT NULL COMMENT 'tag_name',
      `tag_type` varchar(64) DEFAULT NULL COMMENT 'tag_type',
      `data_id` varchar(255) NOT NULL COMMENT 'data_id',
      `group_id` varchar(128) NOT NULL COMMENT 'group_id',
      `tenant_id` varchar(128) DEFAULT '' COMMENT 'tenant_id',
      `nid` bigint(20) NOT NULL AUTO_INCREMENT,
      PRIMARY KEY (`nid`),
      UNIQUE KEY `uk_configtagrelation_configidtag` (`id`,`tag_name`,`tag_type`),
      KEY `idx_tenant_id` (`tenant_id`)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='config_tag_relation';
    
    /******************************************/
    /* 数据库全名 = nacos_config */
    /* 表名称 = group_capacity */
    /******************************************/
    CREATE TABLE `group_capacity` (
      `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键ID',
      `group_id` varchar(128) NOT NULL DEFAULT '' COMMENT 'Group ID，空字符表示整个集群',
      `quota` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '配额，0表示使用默认值',
      `usage` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '使用量',
      `max_size` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '单个配置大小上限，单位为字节，0表示使用默认值',
      `max_aggr_count` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '聚合子配置最大个数，，0表示使用默认值',
      `max_aggr_size` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '单个聚合数据的子配置大小上限，单位为字节，0表示使用默认值',
      `max_history_count` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '最大变更历史数量',
      `gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
      `gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '修改时间',
      PRIMARY KEY (`id`),
      UNIQUE KEY `uk_group_id` (`group_id`)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='集群、各Group容量信息表';
    
    /******************************************/
    /* 数据库全名 = nacos_config */
    /* 表名称 = his_config_info */
    /******************************************/
    CREATE TABLE `his_config_info` (
      `id` bigint(64) unsigned NOT NULL,
      `nid` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
      `data_id` varchar(255) NOT NULL,
      `group_id` varchar(128) NOT NULL,
      `app_name` varchar(128) DEFAULT NULL COMMENT 'app_name',
      `content` longtext NOT NULL,
      `md5` varchar(32) DEFAULT NULL,
      `gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
      `gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
      `src_user` text,
      `src_ip` varchar(20) DEFAULT NULL,
      `op_type` char(10) DEFAULT NULL,
      `tenant_id` varchar(128) DEFAULT '' COMMENT '租户字段',
      PRIMARY KEY (`nid`),
      KEY `idx_gmt_create` (`gmt_create`),
      KEY `idx_gmt_modified` (`gmt_modified`),
      KEY `idx_did` (`data_id`)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='多租户改造';
    
    
    /******************************************/
    /* 数据库全名 = nacos_config */
    /* 表名称 = tenant_capacity */
    /******************************************/
    CREATE TABLE `tenant_capacity` (
      `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT '主键ID',
      `tenant_id` varchar(128) NOT NULL DEFAULT '' COMMENT 'Tenant ID',
      `quota` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '配额，0表示使用默认值',
      `usage` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '使用量',
      `max_size` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '单个配置大小上限，单位为字节，0表示使用默认值',
      `max_aggr_count` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '聚合子配置最大个数',
      `max_aggr_size` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '单个聚合数据的子配置大小上限，单位为字节，0表示使用默认值',
      `max_history_count` int(10) unsigned NOT NULL DEFAULT '0' COMMENT '最大变更历史数量',
      `gmt_create` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
      `gmt_modified` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '修改时间',
      PRIMARY KEY (`id`),
      UNIQUE KEY `uk_tenant_id` (`tenant_id`)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='租户容量信息表';
    
    
    CREATE TABLE `tenant_info` (
      `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'id',
      `kp` varchar(128) NOT NULL COMMENT 'kp',
      `tenant_id` varchar(128) default '' COMMENT 'tenant_id',
      `tenant_name` varchar(128) default '' COMMENT 'tenant_name',
      `tenant_desc` varchar(256) DEFAULT NULL COMMENT 'tenant_desc',
      `create_source` varchar(32) DEFAULT NULL COMMENT 'create_source',
      `gmt_create` bigint(20) NOT NULL COMMENT '创建时间',
      `gmt_modified` bigint(20) NOT NULL COMMENT '修改时间',
      PRIMARY KEY (`id`),
      UNIQUE KEY `uk_tenant_info_kptenantid` (`kp`,`tenant_id`),
      KEY `idx_tenant_id` (`tenant_id`)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin COMMENT='tenant_info';
    
    CREATE TABLE `users` (
    	`username` varchar(50) NOT NULL PRIMARY KEY,
    	`password` varchar(500) NOT NULL,
    	`enabled` boolean NOT NULL
    );
    
    CREATE TABLE `roles` (
    	`username` varchar(50) NOT NULL,
    	`role` varchar(50) NOT NULL,
    	UNIQUE INDEX `idx_user_role` (`username` ASC, `role` ASC) USING BTREE
    );
    
    CREATE TABLE `permissions` (
        `role` varchar(50) NOT NULL,
        `resource` varchar(512) NOT NULL,
        `action` varchar(8) NOT NULL,
        UNIQUE INDEX `uk_role_permission` (`role`,`resource`,`action`) USING BTREE
    );
    
    INSERT INTO users (username, password, enabled) VALUES ('nacos', '$2a$10$EuWPZHzz32dJN7jexM34MOeYirDdFAZm2kuWj7VEOJhhZkDrxfvUu', TRUE);
    
    INSERT INTO roles (username, role) VALUES ('nacos', 'ROLE_ADMIN');

（3）nacos-server-1.2.0\\nacos\\conf目录下找到application.properties

#### 官方默认配置
    #*************** Config Module Related Configurations ***************#
    ### If user MySQL as datasource:
    # spring.datasource.platform=mysql
    
    ### Count of DB:
    # db.num=1
    
    ### Connect URL of DB:
    # db.url.0=jdbc:mysql://1.1.1.1:3306/nacos?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true
    # db.user=user
    # db.password=password
    
     
    #####自己配置
     
    spring.datasource.platform=mysql
     
    db.num=1
    db.url.0=jdbc:mysql://localhost:3306/nacos_config?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true
    db.user=root
    db.password=123456

(4) 启动nacos，可以看到是个全新的空记录界面，以前是记录进derby

### 5.3Linux版Nacos+MySQL生产环境配置 ###

#### 5.3.1Nacos下载linux版本 ####

[https://github.com/alibaba/nacos/releases/tag/1.2.0][https_github.com_alibaba_nacos_releases_tag_1.2.0]

nacos-server-1.2.0.tar.gz

解压后安装

#### 5.3.2集群配置步骤（重点） ####

(1).Linux服务器上mysql数据库配置

**SQL脚本在哪里**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 31]**sql语句源文件**

nacos-mysql.sql

**自己Linux机器上的Mysql数据库黏贴**

执行结果  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 32]（2).application.properties配置

**位置**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 33]**内容**

db.num=1
    db.url.0=jdbc:mysql://1.7.0.1:3306/nacos_config?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true
    db.user=root
    db.password=HF_mysql_654321

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 34]  
mysql 授权远程访问  
GRANT ALL PRIVILEGES ON *.* TO ‘root’@’%’ IDENTIFIED BY ‘123456’ WITH GRANT OPTION;  
flush privileges;

（3）Linux服务器上nacos的集群配置cluster.conf

梳理出3台nacos机器的不同服务端口号

复制出cluster.conf  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 35]内容  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 36]这个IP不能写127.0.0.1,必须是Linux命令hostname -i能够识别的IP

（4).编辑Nacos的启动脚本startup.sh，使它能够接受不同的启动端

nacos/bin目录下有startup.sh

在什么地方，修改什么，怎么修改

思考  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 37]  
修改内容  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 38]**执行方式**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 39]  
（5).Nginx的配置，由它作为负载均衡器

修改nginx的配置文件  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 40]  
nginx.conf  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 41]  
按照指定启动  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 42]  
(6).截止到此处，1个Nginx+3个nacos注册中心+1个mysql

测试通过nginx访问nacos

https://写你自己虚拟机的ip:1111/nacos/\#/login

在nacos管理页面新建一个配置测试

linux服务器的mysql插入一条记录

修改代码进行测试

### 5.3高可用小总结 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 43]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70]

[https_github.com_alibaba_Nacos]: https://github.com/alibaba/Nacos
[https_nacos.io_zh-cn_index.html]: https://nacos.io/zh-cn/index.html
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center]: /images/20221123/09edd91fbae04ac6b0819b2a24e90c86.png
[https_github.com_alibaba_nacos_releases]: https://github.com/alibaba/nacos/releases
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25pdWdhbmcwOTIw_size_16_color_FFFFFF_t_70_pic_center 1]: /images/20221123/66b1e9ea583f406e9f6e9e57429ff666.png
[http_localhost_8080_payment_nacos_1]: http://localhost:8080/payment/nacos/1
[20200827085914621.png_pic_center]: /images/20221123/b740a9a6b21a43dcaff1321ad4a07f62.png
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[https_nacos.io_zh-cn_docs_quick-start-spring-cloud.html]: https://nacos.io/zh-cn/docs/quick-start-spring-cloud.html
[Spring Boot]: https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-profiles.html#boot-features-profiles
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[http_localhost_3377_config_info]: http://localhost:3377/config/info
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[http_ip1]: http://ip1/
[http_VIP]: http://vip/
[http_nacos.com]: http://nacos.com/
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[https_github.com_alibaba_nacos_blob_develop_config_pom.xml]: https://github.com/alibaba/nacos/blob/develop/config/pom.xml
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