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弹簧启动执行器显示微维修状态

service-discovery netflix-eureka spring-cloud docker spring-boot

Mateusz Gebroski · 技术社区 · 6 年前

我正在尝试为我的微服务添加Eureka服务,但是即使微服务正在运行并且消息传递正常,Eureka也无法发现服务,因为它们关闭了?这就是 http://localhost:8080/actuator/health

{
  "status": "DOWN",
  "components": {
    "binders": {
      "status": "UP",
      "components": {
        "rabbit": {
          "status": "UP",
          "details": {
            "version": "3.7.8"
          }
        }
      }
    },
    "coreServices": {
      "status": "DOWN",
      "details": {
        "movie": {
          "status": "DOWN",
          "details": {
            "error": "io.netty.channel.AbstractChannel$AnnotatedConnectException: finishConnect(..) failed: Connection refused: movie/172.21.0.8:80"
          }
        },
        "reviews": {
          "status": "DOWN",
          "details": {
            "error": "io.netty.channel.AbstractChannel$AnnotatedConnectException: finishConnect(..) failed: Connection refused: review/172.21.0.9:80"
          }
        },
        "recommendations": {
          "status": "DOWN",
          "details": {
            "error": "io.netty.channel.AbstractChannel$AnnotatedConnectException: finishConnect(..) failed: Connection refused: recommendation/172.21.0.6:80"
          }
        }
      }
    },
    "discoveryComposite": {
      "description": "Discovery Client not initialized",
      "status": "UNKNOWN",
      "components": {
        "discoveryClient": {
          "description": "Discovery Client not initialized",
          "status": "UNKNOWN"
        }
      }
    },
    "diskSpace": {
      "status": "UP",
      "details": {
        "total": 84014424064,
        "free": 28400906240,
        "threshold": 10485760
      }
    },
    "ping": {
      "status": "UP"
    },
    "rabbit": {
      "status": "UP",
      "details": {
        "version": "3.7.8"
      }
    },
    "reactiveDiscoveryClients": {
      "description": "Discovery Client not initialized",
      "status": "UNKNOWN",
      "components": {
        "Simple Reactive Discovery Client": {
          "description": "Discovery Client not initialized",
          "status": "UNKNOWN"
        }
      }
    }
  }
}

为什么?通过跑步 码头工人ps 所有这些都有:

(base) mat@mat-Vostro-5471:~/Projects/movie-rest-services$ docker ps
CONTAINER ID        IMAGE                                 COMMAND                  CREATED             STATUS                    PORTS                                                                                        NAMES
376da889ce8c        movie-rest-services_review            "java -jar /app.jar"     23 minutes ago      Up 23 minutes             8080/tcp                                                                                     movie-rest-services_review_1
f4fe8c2668f2        movie-rest-services_movie             "java -jar /app.jar"     23 minutes ago      Up 23 minutes             8080/tcp                                                                                     movie-rest-services_movie_1
b2fa74bdb3ea        movie-rest-services_movie-composite   "java -jar /app.jar"     23 minutes ago      Up 23 minutes             0.0.0.0:8080->8080/tcp                                                                       movie-rest-services_movie-composite_1
d45062ca4e0c        movie-rest-services_recommendation    "java -jar /app.jar"     23 minutes ago      Up 23 minutes             8080/tcp                                                                                     movie-rest-services_recommendation_1
a16db364e277        movie-rest-services_eureka            "java -jar /app.jar"     23 minutes ago      Up 23 minutes             0.0.0.0:8761->8761/tcp                                                                       movie-rest-services_eureka_1
fd6b45ade9c3        rabbitmq:3.7.8-management             "docker-entrypoint.sâ¦"   23 minutes ago      Up 23 minutes (healthy)   4369/tcp, 5671/tcp, 0.0.0.0:5672->5672/tcp, 15671/tcp, 25672/tcp, 0.0.0.0:15672->15672/tcp   movie-rest-services_rabbitmq_1
68c9e3e92256        mongo:3.6.9                           "docker-entrypoint.sâ¦"   23 minutes ago      Up 23 minutes (healthy)   0.0.0.0:27017->27017/tcp                                                                     movie-rest-services_mongodb_1
2ad058b543d8        mysql:5.7                             "docker-entrypoint.sâ¦"   23 minutes ago      Up 23 minutes (healthy)   0.0.0.0:3306->3306/tcp, 33060/tcp                                                            movie-rest-services_mysql_1

我所有的微服务,包括复合spring.application.name名称和eureka配置集如下:

spring.application.name: movie

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/
    initialInstanceInfoReplicationIntervalSeconds: 5
    registryFetchIntervalSeconds: 5
  instance:
    leaseRenewalIntervalInSeconds: 5
    leaseExpirationDurationInSeconds: 5

而Eureka服务应用程序如下所示:

server:
  port: 8761

eureka:
  instance:
    hostname: localhost
  client:
    registerWithEureka: false
    fetchRegistry: false
    serviceUrl:
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/
  # from: https://github.com/spring-cloud-samples/eureka/blob/master/src/main/resources/application.yml
  server:
    waitTimeInMsWhenSyncEmpty: 0
    response-cache-update-interval-ms: 5000

management.endpoints.web.exposure.include: "*"

我正在检查microservice是向上还是向下(我将坚持上面描述的电影示例):

private Mono<Health> getHealth(String url) {
    url += "/actuator/health";
    log.info("Will call the Health API on URL: {}", url);
    return getWebClient().get().uri(url).retrieve().bodyToMono(String.class)
            .map(s -> new Health.Builder().up().build())
            .onErrorResume(ex -> Mono.just(new Health.Builder().down(ex).build()))
            .log();
}

其中url是: http://movie ";

输出:

movie-composite_1  | 2020-02-11 18:03:07.251  INFO 1 --- [or-http-epoll-6] c.g.m.c.m.s.MovieCompositeIntegration    : Will call the Health API on URL: http://movie/actuator/health
movie-composite_1  | 2020-02-11 18:03:07.253  INFO 1 --- [or-http-epoll-6] reactor.Mono.OnErrorResume.4             : onSubscribe(FluxOnErrorResume.ResumeSubscriber)
movie-composite_1  | 2020-02-11 18:03:07.253  INFO 1 --- [or-http-epoll-6] reactor.Mono.OnErrorResume.4             : request(unbounded)
movie-composite_1  | 2020-02-11 18:03:07.256  INFO 1 --- [or-http-epoll-6] c.g.m.c.m.s.MovieCompositeIntegration    : Will call the Health API on URL: http://recommendation/actuator/health
movie-composite_1  | 2020-02-11 18:03:07.257  INFO 1 --- [or-http-epoll-6] reactor.Mono.OnErrorResume.5             : onSubscribe(FluxOnErrorResume.ResumeSubscriber)
movie-composite_1  | 2020-02-11 18:03:07.257  INFO 1 --- [or-http-epoll-6] reactor.Mono.OnErrorResume.5             : request(unbounded)
movie-composite_1  | 2020-02-11 18:03:07.260  INFO 1 --- [or-http-epoll-6] c.g.m.c.m.s.MovieCompositeIntegration    : Will call the Health API on URL: http://review/actuator/health
movie-composite_1  | 2020-02-11 18:03:07.261  INFO 1 --- [or-http-epoll-6] reactor.Mono.OnErrorResume.6             : onSubscribe(FluxOnErrorResume.ResumeSubscriber)
movie-composite_1  | 2020-02-11 18:03:07.261  INFO 1 --- [or-http-epoll-6] reactor.Mono.OnErrorResume.6             : request(unbounded)
movie-composite_1  | 2020-02-11 18:03:07.265  INFO 1 --- [or-http-epoll-6] reactor.Mono.OnErrorResume.4             : onNext(DOWN {error=io.netty.channel.AbstractChannel$AnnotatedConnectException: finishConnect(..) failed: Connection refused: movie/172.21.0.8:80})
movie-composite_1  | 2020-02-11 18:03:07.266  INFO 1 --- [or-http-epoll-6] reactor.Mono.OnErrorResume.4             : onComplete()
movie-composite_1  | 2020-02-11 18:03:07.266  INFO 1 --- [or-http-epoll-6] reactor.Mono.OnErrorResume.5             : onNext(DOWN {error=io.netty.channel.AbstractChannel$AnnotatedConnectException: finishConnect(..) failed: Connection refused: recommendation/172.21.0.6:80})
movie-composite_1  | 2020-02-11 18:03:07.266  INFO 1 --- [or-http-epoll-6] reactor.Mono.OnErrorResume.5             : onComplete()
movie-composite_1  | 2020-02-11 18:03:07.267  INFO 1 --- [or-http-epoll-6] reactor.Mono.OnErrorResume.6             : onNext(DOWN {error=io.netty.channel.AbstractChannel$AnnotatedConnectException: finishConnect(..) failed: Connection refused: review/172.21.0.9:80})
movie-composite_1  | 2020-02-11 18:03:07.273  INFO 1 --- [or-http-epoll-6] reactor.Mono.OnErrorResume.6             : onComplete()

你能给我一些提示吗? 所有测试均通过,mvn clean安装也成功。

0 回复 | 直到 6 年前

Nguyen Lam Phuc 6 年前

看着你的 docker ps movie 服务正在端口监听 8080 .

http://movie:8080/actuator/health . 其他服务也一样!

说明:

每个容器将能够侦听它所希望的任何端口,而不会干扰其他容器或主机。例如,movie和review服务都可以在端口8080上侦听(对于同一网络中的不同机器/VM的行为类似)
movie:8080 或 review:8080
movie-composite 服务 0.0.0.0:8080->8080/tcp 8080 8080 你的本地主机。因此,您可以在浏览器上打开此链接 http://localhost:8080/actuator/health