Nacos service installation

nacos

Service installation

• Go to github Download the latest zip Pack and unzip https://github.com/alibaba/nacos/releases

• Execute the following command in the root directory ：

  mvn -Prelease-nacos -DskipTests clean install -U  
  

• nacos\distribution\target Downstream required packages , decompression

• Go to unzip directory

  cd bin
  

• modify startup.cmd File for standalone Pattern

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• double-click startup.cmd start-up

nacos Use

/**
 * 1、 How to use nacos Manage uniformly as a configuration center 
 *      1）、 Introduce dependencies 
 *      <dependency>
 *             <groupId>com.alibaba.cloud</groupId>
 *             <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
 *         </dependency>
 *      2）、 Create a bootstrap.properties, Configure the following two items 
 *          spring.cloud.nacos.config.server-addr=127.0.0.1:8848
 *          spring.application.name=mall-coupon
 *      3）、 You need to add a data set to the configuration center by default （Data Id）mall-coupon.properties, The default rules ： Application name .properties
 *      4）、 Give app name .properties Add any configuration 
 *      5）、 Get configuration dynamically 
 *          @RefreshScope： Get and refresh the configuration dynamically 
 *          @Value(""${ Name of the configuration item })： Get configuration 
 *           If the configuration center and the configuration file of the current project are configured with the same item , Give priority to the configuration of the center 
 * 2、 details 
 *      1）、 Namespace ： Configure isolation 
 *           Default ：public( Reserved space ), By default, all new configurations are in public Space 
 *          1.1）、  Development 、 test 、 Production uses namespaces for environmental isolation 
 *                   Be careful ： stay bootstrap.properties Configuration 、 Which command namespace configuration should be used 
 *                  spring.cloud.nacos.config.namespace=1b0191f0-19f3-4784-a8b1-474c5d3d244a[ Namespace id]
 *          1.2）、 Each micro service is isolated from each other , Each microservice creates its own namespace , Only load all configurations in your own namespace 
 *      2）、 config set ： A collection of all configurations 
 *      3）、 config set ID： Similar file name 
 *          DataId： Similar file name 
 *      4）、 Configuration group 
 *           By default, all configuration sets belong to ：DEFAULT_GROUP
 *   Each microservice creates its own namespace , Use configuration groups to distinguish environment configurations ：test、prod、test
 *      5）、 Load multiple configuration sets at the same time 
 *          5.1）、 Microservice any configuration information , Any configuration file can be placed in the configuration center 
 *          5.2）、 Only need bootstrap.properties Explain which configuration files to load 
 */

Version relationship

https://github.com/alibaba/spring-cloud-alibaba/wiki/%E7%89%88%E6%9C%AC%E8%AF%B4%E6%98%8E

<!-- Service registration | Find out -->
<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>

@Configuration
@EnableConfigurationProperties
@ConditionalOnNacosDiscoveryEnabled
@ConditionalOnProperty(value = "spring.cloud.service-registry.auto-registration.enabled", matchIfMissing = true)
//  In the class AutoServiceRegistrationConfiguration,AutoServiceRegistrationAutoConfiguration And then automatically configure ,
AutoServiceRegistrationConfiguration The corresponding is 
    
@AutoConfigureAfter({
     AutoServiceRegistrationConfiguration.class,
		AutoServiceRegistrationAutoConfiguration.class })
public class NacosDiscoveryAutoConfiguration {
    

    // 1. nacos Service registration 
	@Bean
	public NacosServiceRegistry nacosServiceRegistry(
			NacosDiscoveryProperties nacosDiscoveryProperties) {
    
		return new NacosServiceRegistry(nacosDiscoveryProperties);
	}

    // 2. nacos register 
	@Bean
	@ConditionalOnBean(AutoServiceRegistrationProperties.class)
	public NacosRegistration nacosRegistration(
			NacosDiscoveryProperties nacosDiscoveryProperties,
			ApplicationContext context) {
    
		return new NacosRegistration(nacosDiscoveryProperties, context);
	}

    // 3. nacos Automatic service registration 
	@Bean
	@ConditionalOnBean(AutoServiceRegistrationProperties.class)
	public NacosAutoServiceRegistration nacosAutoServiceRegistration(
			NacosServiceRegistry registry,
			AutoServiceRegistrationProperties autoServiceRegistrationProperties,
			NacosRegistration registration) {
    
		return new NacosAutoServiceRegistration(registry,
				autoServiceRegistrationProperties, registration);
	}
}

NacosDiscoveryProperties {
    
	serverAddr = '127.0.0.1:8848', 
    endpoint = '', 
    namespace = '', 
    watchDelay = 30000, 
    logName = '', 
    service = 'mall-coupon', 
    weight = 1.0,
    clusterName = 'DEFAULT', 
    namingLoadCacheAtStart = 'false', 
    metadata = {
    
		preserved.register.source = SPRING_CLOUD
	}, 
	registerEnabled = true, 
	ip = '192.168.1.7', 
	networkInterface = '', 
	port = -1, 
	secure = false, 
	accessKey = '', 
	secretKey = ''
}

namingService {
    
	namespace: "public",
   	endpoint: "",
    serverList:	"127.0.0.1:8848",
    cacheDir; "C:\Users\admin/nacos/naming/public",
   	logName: "naming.log"
    hostReactor:
    beatReactor:
    eventDispatcher;
   	serverProxy: {
    
    	serverPort: 8848,
    	namespaceId: "public",
    	endpoint: "",
    	nacosDomain: "127.0.0.1:8848",
    	serverList: [
    		"127.0.0.1:8848"
    	],
		serversFromEndpoint: [],
		lastSrvRefTime: 0,
		vipSrvRefInterMillis: 30000,
		properties: {
    
            
        }
	}
}

instance How does the instance come from ？

com.alibaba.cloud.nacos.registry.NacosServiceRegistry#register

this.nacosDiscoveryProperties = nacosDiscoveryProperties;
this.namingService = nacosDiscoveryProperties.namingServiceInstance();

Instance instance = getNacosInstanceFromRegistration(registration);

	@PostConstruct	public void init() {		Map<String, String> metadata = nacosDiscoveryProperties.getMetadata();		Environment env = context.getEnvironment();		String endpointBasePath = env.getProperty(MANAGEMENT_ENDPOINT_BASE_PATH);		if (!StringUtils.isEmpty(endpointBasePath)) {			metadata.put(MANAGEMENT_ENDPOINT_BASE_PATH, endpointBasePath);		}		Integer managementPort = ManagementServerPortUtils.getPort(context);		if (null != managementPort) {			metadata.put(MANAGEMENT_PORT, managementPort.toString());			String contextPath = env					.getProperty("management.server.servlet.context-path");			String address = env.getProperty("management.server.address");			if (!StringUtils.isEmpty(contextPath)) {				metadata.put(MANAGEMENT_CONTEXT_PATH, contextPath);			}			if (!StringUtils.isEmpty(address)) {				metadata.put(MANAGEMENT_ADDRESS, address);			}		}		if (null != nacosDiscoveryProperties.getHeartBeatInterval()) {			metadata.put(PreservedMetadataKeys.HEART_BEAT_INTERVAL,					nacosDiscoveryProperties.getHeartBeatInterval().toString());		}		if (null != nacosDiscoveryProperties.getHeartBeatTimeout()) {			metadata.put(PreservedMetadataKeys.HEART_BEAT_TIMEOUT,					nacosDiscoveryProperties.getHeartBeatTimeout().toString());		}		if (null != nacosDiscoveryProperties.getIpDeleteTimeout()) {			metadata.put(PreservedMetadataKeys.IP_DELETE_TIMEOUT,					nacosDiscoveryProperties.getIpDeleteTimeout().toString());		}	}