consul注册报错 connectex: No connection could be made because the target machine actively refused it.

consul注册报错 connectex: No connection could be made because the target machine actively refused it.

•  

• Get http://localhost:2000/actuator/health: dial tcp [::1]:2000: connectex: No connection could be made because the target machine actively refused it.

• Copy Output

项目springboot 注册向consul时,健康检查失败,可以看到上面的连接地址是 localhost:2000/actuator/health ,consul与微服务在不同主机上,就会出现以上错误.

原因是配置properties有问题,

配置如下

spring.application.name=XXX
server.port=9114
spring.cloud.consul.host=192.168.0.17
spring.cloud.consul.port=8500
spring.cloud.consul.discovery.serviceName=service-XXX

解决方式:

1.配置hostname

spring.cloud.consul.discovery.hostname=192.168.0.240

2.配置健康检查地址

spring.cloud.consul.discovery.healthCheckUrl=http://192.168.0.240:9113/actuator/health

 

 

以下是向consul注册服务的spring源码,

下面也附上具体的类的名称方便找到方法进行查看

 

1.注册所有class

//类名
org.springframework.context.annotation.ConfigurationClassEnhancer

//方法
    static {
        CALLBACKS = new Callback[]{new ConfigurationClassEnhancer.BeanMethodInterceptor(), new ConfigurationClassEnhancer.BeanFactoryAwareMethodInterceptor(), NoOp.INSTANCE};
        CALLBACK_FILTER = new ConfigurationClassEnhancer.ConditionalCallbackFilter(CALLBACKS); //遍历
        logger = LogFactory.getLog(ConfigurationClassEnhancer.class);
        objenesis = new SpringObjenesis();
    }

2.通过properies写入hostname

//类名
org.springframework.cloud.consul.discovery.ConsulDiscoveryProperties


//方法
    public void setHostname(String hostname) {
        this.hostname = hostname;
        this.hostInfo.override = true;
    }

3.开始注册,传入参数

//类名
org.springframework.cloud.consul.serviceregistry.ConsulAutoServiceRegistrationAutoConfiguration


//方法
    @Bean
    @ConditionalOnMissingBean
    public ConsulAutoRegistration consulRegistration(AutoServiceRegistrationProperties autoServiceRegistrationProperties, ConsulDiscoveryProperties properties, ApplicationContext applicationContext, ObjectProvider> registrationCustomizers, HeartbeatProperties heartbeatProperties) {
        return ConsulAutoRegistration.registration(autoServiceRegistrationProperties, properties, applicationContext, (List)registrationCustomizers.getIfAvailable(), heartbeatProperties);
    }

4.写入参数

//类名
org.springframework.cloud.consul.serviceregistry.ConsulAutoRegistration


//方法
public static ConsulAutoRegistration registration(AutoServiceRegistrationProperties autoServiceRegistrationProperties, ConsulDiscoveryProperties properties, ApplicationContext context, List registrationCustomizers, HeartbeatProperties heartbeatProperties) {
        NewService service = new NewService();
        String appName = getAppName(properties, context.getEnvironment());
        service.setId(getInstanceId(properties, context));
        if (!properties.isPreferAgentAddress()) {
            service.setAddress(properties.getHostname());
        }

        service.setName(normalizeForDns(appName));
        service.setTags(createTags(properties));
        if (properties.getPort() != null) {
            service.setPort(properties.getPort());
            setCheck(service, autoServiceRegistrationProperties, properties, context, heartbeatProperties);
        }

        ConsulAutoRegistration registration = new ConsulAutoRegistration(service, autoServiceRegistrationProperties, properties, context, heartbeatProperties);
        customize(registrationCustomizers, registration);
        return registration;
    }

5.请求注册

//类名
org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration

//方法
    public void start() {
        if (!this.isEnabled()) {
            if (logger.isDebugEnabled()) {
                logger.debug("Discovery Lifecycle disabled. Not starting");
            }

        } else {
            if (!this.running.get()) {
                this.register();  //注册
                if (this.shouldRegisterManagement()) {
                    this.registerManagement();
                }

                this.context.publishEvent(new InstanceRegisteredEvent(this, this.getConfiguration()));
                this.running.compareAndSet(false, true);
            }

        }
    }

    

package com.ecwid.consul.v1.agent.model


public class NewService {
    @SerializedName("ID") 
    private String id;  //XXX-9114
    @SerializedName("Name")
    private String name;  //service-XXX
    @SerializedName("Tags")
    private List tags;
    @SerializedName("Address")
    private String address;        //properties.getHostname()
    @SerializedName("Port")
    private Integer port;
    @SerializedName("EnableTagOverride")
    private Boolean enableTagOverride;
    @SerializedName("Check")
    private NewService.Check check;
    @SerializedName("Checks")
    private List checks;
    
    ....省略GetSet
}

6.发送请求,到consul注册

//类名
 com.ecwid.consul.v1.agent.AgentConsulClient;

//方法
    public Response agentServiceRegister(NewService newService, String token) {
        UrlParameters tokenParam = token != null ? new SingleUrlParameters("token", token) : null;
        String json = GsonFactory.getGson().toJson(newService); 

        /*{"ID":"oms-xt-plan-9114","Name":"service-oms-xt-plan","Tags":["secure\u003dfalse"],"Address":"localhost","Port":9114,"Check":{"Interval":"10s","HTTP":"http://192.168.0.240:9114/actuator/health"}}*/
        
        RawResponse rawResponse = this.rawClient.makePutRequest("/v1/agent/service/register", json, new UrlParameters[]{tokenParam});
        if (rawResponse.getStatusCode() == 200) {
            return new Response((Object)null, rawResponse);
        } else {
            throw new OperationException(rawResponse);
        }
    }

7.发送put 请求

//类名
com.ecwid.consul.transport.AbstractHttpTransport;

    
//方法
public RawResponse makePutRequest(String url, String content) { 
        /*content =  {"ID":"oms-xt-plan-9114","Name":"service-oms-xt-plan","Tags":["secure\u003dfalse"],"Address":"localhost","Port":9114,"Check":{"Interval":"10s","HTTP":"http://192.168.0.240:9114/actuator/health"}} */

        HttpPut httpPut = new HttpPut(url);         
        //PUT http://192.168.0.17:8500/v1/agent/service/register?token= HTTP/1.1
        httpPut.setEntity(new StringEntity(content, UTF_8));
        return this.executeRequest(httpPut);
    }

//类名
com.ecwid.consul.v1.ConsulRawClient;

//方法
    public RawResponse makePutRequest(String endpoint, String content, UrlParameters... urlParams) {
        String url = this.prepareUrl(this.agentAddress + endpoint);
//  http://192.168.0.17:8500/v1/agent/service/register
        url = Utils.generateUrl(url, urlParams);                //http://192.168.0.17:8500/v1/agent/service/register?token=
        return this.httpTransport.makePutRequest(url, content);
    }