详解SpringCloudRibbon负载均衡通过服务器名无法连接的神坑

java.net.UnknownHostException: SERVICE-HI

java.lang.IllegalStateException: No instances available for SERVICE-HI

java.lang.IllegalStateException: Request URI does not contain a valid hostname: http://SERVICE-HI

com.netfix.discovery.shared.taransport.TransportException: Cannot execute request on any known server

@Bean
@LoadBalanced
public RestTemplate getRestTemplate(){
  return new RestTemplate();
}

eureka:
 client:
  serviceUrl:
   defaultZone: http://localhost:8761/eureka/
server:
 port: 8764
spring:
 application:
  name: service-ribbon

  
    org.springframework.boot
    spring-boot-starter-web
  
  
    org.springframework.cloud
    spring-cloud-starter-netflix-ribbon
  

@SpringBootApplication
@EnableDiscoveryClient
public class ServiceRibbonApplication {
  
  public static void main(String[] args) {    
    SpringApplication.run( ServiceRibbonApplication.class, args );
  }

}

  org.springframework.cloud
  spring-cloud-starter-netflix-eureka-client

import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.hystrix.EnableHystrix;


@SpringBootApplication
@EnableEurekaClient
@EnableHystrix //我开启了段容器
public class ServiceRibbonApplication {

  public static void main(String[] args) {
    SpringApplication.run( ServiceRibbonApplication.class, args );
  }

}

  org.springframework.cloud
  spring-cloud-starter-netflix-hystrix

2019-06-15 13:08:06.668 INFO 14796 --- [      main] com.netflix.discovery.DiscoveryClient  : Getting all instance registry info from the eureka server
2019-06-15 13:08:06.878 INFO 14796 --- [      main] com.netflix.discovery.DiscoveryClient  : The response status is 200
2019-06-15 13:08:06.882 INFO 14796 --- [      main] com.netflix.discovery.DiscoveryClient  : Starting heartbeat executor: renew interval is: 30
2019-06-15 13:08:06.886 INFO 14796 --- [      main] c.n.discovery.InstanceInfoReplicator   : InstanceInfoReplicator onDemand update allowed rate per min is 4
2019-06-15 13:08:06.891 INFO 14796 --- [      main] com.netflix.discovery.DiscoveryClient  : Discovery Client initialized at timestamp 1560575286889 with initial instances count: 2
2019-06-15 13:08:06.894 INFO 14796 --- [      main] o.s.c.n.e.s.EurekaServiceRegistry    : Registering application SERVICE-RIBBON with eureka with status UP
2019-06-15 13:08:06.896 INFO 14796 --- [      main] com.netflix.discovery.DiscoveryClient  : Saw local status change event StatusChangeEvent [timestamp=1560575286896, current=UP, previous=STARTING]
2019-06-15 13:08:06.900 INFO 14796 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient  : DiscoveryClient_SERVICE-RIBBON/DESKTOP-FJQITE3:service-ribbon:8764: registering service...
2019-06-15 13:08:06.958 INFO 14796 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient  : DiscoveryClient_SERVICE-RIBBON/DESKTOP-FJQITE3:service-ribbon:8764 - registration status: 204
2019-06-15 13:08:06.961 INFO 14796 --- [      main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8764 (http) with context path ''
2019-06-15 13:08:06.963 INFO 14796 --- [      main] .s.c.n.e.s.EurekaAutoServiceRegistration : Updating port to 8764
2019-06-15 13:08:06.967 INFO 14796 --- [      main] cn.meylink.ServiceRibbonApplication   : Started ServiceRibbonApplication in 5.868 seconds (JVM running for 7.204)

  
  
    org.springframework.cloud
    spring-cloud-starter-netflix-eureka-client
  
  
  
    org.springframework.cloud
    spring-cloud-starter-netflix-eureka-server
  
  
  
    org.springframework.cloud
    spring-cloud-starter-netflix-hystrix
  
  
  
    org.springframework.cloud
    spring-cloud-starter-netflix-ribbon
  
  
  
    org.springframework.cloud
    spring-cloud-starter-openfeign
  
  
  
    org.springframework.cloud
    spring-cloud-config-server
  
  
  
    org.springframework.cloud
    spring-cloud-starter-config
  
  
  
    org.springframework.cloud
    spring-cloud-starter-netflix-zuul
  
  
    org.springframework.boot
    spring-boot-starter-test
    test