运行 微服务在随机端口上时 Eureka 无法找到端口
Eureka not able to find port when running microservices on random port
我在我的 spring 启动应用程序中使用 eureka 进行服务发现，使用 ribbon 进行负载平衡。当我 运行 我的微服务在固定端口上注册到 eureka 时它工作正常但是当我 运行 它们在随机端口上时虽然我可以看到在 eureka 仪表板上注册的服务它无法找到端口号。尝试访问该服务时出现以下错误。
2018-11-27 07:55:15.853 INFO 7240 --- [nio-8079-exec-1] c.n.l.DynamicServerListLoadBalancer : DynamicServerListLoadBalancer for client MYAPP initialized: DynamicServerListLoadBalancer:{NFLoadBalancer:name=MYAPP,current list of Servers=[nawnit:0, nawnit:0],Load balancer stats=Zone stats: {defaultzone=[Zone:defaultzone; Instance count:2; Active connections count: 0; Circuit breaker tripped count: 0; Active connections per server: 0.0;]
},Server stats: [[Server:nawnit:0; Zone:defaultZone; Total Requests:0; Successive connection failure:0; Total blackout seconds:0; Last connection made:Thu Jan 01 05:30:00 IST 1970; First connection made: Thu Jan 01 05:30:00 IST 1970; Active Connections:0; total failure count in last (1000) msecs:0; average resp time:0.0; 90 percentile resp time:0.0; 95 percentile resp time:0.0; min resp time:0.0; max resp time:0.0; stddev resp time:0.0]
]}ServerList:org.springframework.cloud.netflix.ribbon.eureka.DomainExtractingServerList@563d5f30
2018-11-27 07:55:15.907 ERROR 7240 --- [nio-8079-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.web.client.ResourceAccessException: I/O error on POST request for "http://MYAPP/validation/1": connect: Address is invalid on local machine, or port is not valid on remote machine; nested exception is java.net.ConnectException: connect: Address is invalid on local machine, or port is not valid on remote machine] with root cause
java.net.ConnectException: connect: Address is invalid on local machine, or port is not valid on remote machine
at java.net.DualStackPlainSocketImpl.connect0(Native Method) ~[na:1.8.0_181]
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79) ~[na:1.8.0_181]
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_181]
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_181]
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_181]
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) ~[na:1.8.0_181]
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_181]
at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_181]
at java.net.Socket.connect(Socket.java:538) ~[na:1.8.0_181]
at sun.net.NetworkClient.doConnect(NetworkClient.java:180) ~[na:1.8.0_181]
at sun.net.www.http.HttpClient.openServer(HttpClient.java:463) ~[na:1.8.0_181]
at sun.net.www.http.HttpClient.openServer(HttpClient.java:558) ~[na:1.8.0_181]
at sun.net.www.http.HttpClient.<init>(HttpClient.java:242) ~[na:1.8.0_181]
at sun.net.www.http.HttpClient.New(HttpClient.java:339) ~[na:1.8.0_181]
at sun.net.www.http.HttpClient.New(HttpClient.java:357) ~[na:1.8.0_181]
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1220) ~[na:1.8.0_181]
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1156) ~[na:1.8.0_181]
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1050) ~[na:1.8.0_181]
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:984) ~[na:1.8.0_181]
at org.springframework.http.client.SimpleBufferingClientHttpRequest.executeInternal(SimpleBufferingClientHttpRequest.java:76) ~[spring-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
at org.spr
这是我的控制器class，我正在从中调用另一个服务。
public ResponseEntity<BaseResponse> verifyEmail(@RequestBody CustomerIdentity identity,
@PathVariable Integer simID) throws HttpClientErrorException {
System.out.println(this.discoveryClient.getInstances("MYAPP").get(0).getUri().toString());
return restTemplate.postForEntity("http://MYAPP"+ "/validation/" + simID, identity, BaseResponse.class);
}
这是我添加的属性
eureka.client.service-url.defaultZone=http://localhost:8761/eureka
我的服务在尤里卡注册，名称为 MYAPP。我也试过打印 url，如您所见，它给出 http://nawnit:8080 时运行ning 在固定端口上，但是当 运行ning 在随机端口上时，我得到 http://nawnit:0 （nawnit 是我的电脑名称）
这是我配置的eureka服务器属性
server.port=8761
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
logging.level.com.netflix.eureka=OFF
logging.level.com.netflix.discovery=OFF
尤里卡客户端的pom.xml：
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Greenwich.M3</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-ribbon</artifactId>
<version>1.4.6.RELEASE</version>
</dependency>
注意：我正在使用的 restTemplate 配置为负载平衡。
这是一个错误，已修复。参见 https://github.com/spring-cloud/spring-cloud-netflix/issues/3294 for a test that recreated the issue. Fixes were also made here https://github.com/spring-cloud/spring-cloud-commons/issues/451
这应该会在下周（2018 年 12 月 6 日）作为 Greenwich.RC1 的一部分提供。请参阅 https://github.com/spring-cloud/spring-cloud-release/milestones 了解更新。
我在我的 spring 启动应用程序中使用 eureka 进行服务发现，使用 ribbon 进行负载平衡。当我 运行 我的微服务在固定端口上注册到 eureka 时它工作正常但是当我 运行 它们在随机端口上时虽然我可以看到在 eureka 仪表板上注册的服务它无法找到端口号。尝试访问该服务时出现以下错误。
2018-11-27 07:55:15.853 INFO 7240 --- [nio-8079-exec-1] c.n.l.DynamicServerListLoadBalancer : DynamicServerListLoadBalancer for client MYAPP initialized: DynamicServerListLoadBalancer:{NFLoadBalancer:name=MYAPP,current list of Servers=[nawnit:0, nawnit:0],Load balancer stats=Zone stats: {defaultzone=[Zone:defaultzone; Instance count:2; Active connections count: 0; Circuit breaker tripped count: 0; Active connections per server: 0.0;]
},Server stats: [[Server:nawnit:0; Zone:defaultZone; Total Requests:0; Successive connection failure:0; Total blackout seconds:0; Last connection made:Thu Jan 01 05:30:00 IST 1970; First connection made: Thu Jan 01 05:30:00 IST 1970; Active Connections:0; total failure count in last (1000) msecs:0; average resp time:0.0; 90 percentile resp time:0.0; 95 percentile resp time:0.0; min resp time:0.0; max resp time:0.0; stddev resp time:0.0]
]}ServerList:org.springframework.cloud.netflix.ribbon.eureka.DomainExtractingServerList@563d5f30
2018-11-27 07:55:15.907 ERROR 7240 --- [nio-8079-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.web.client.ResourceAccessException: I/O error on POST request for "http://MYAPP/validation/1": connect: Address is invalid on local machine, or port is not valid on remote machine; nested exception is java.net.ConnectException: connect: Address is invalid on local machine, or port is not valid on remote machine] with root cause
java.net.ConnectException: connect: Address is invalid on local machine, or port is not valid on remote machine
at java.net.DualStackPlainSocketImpl.connect0(Native Method) ~[na:1.8.0_181]
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79) ~[na:1.8.0_181]
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_181]
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_181]
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_181]
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) ~[na:1.8.0_181]
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_181]
at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_181]
at java.net.Socket.connect(Socket.java:538) ~[na:1.8.0_181]
at sun.net.NetworkClient.doConnect(NetworkClient.java:180) ~[na:1.8.0_181]
at sun.net.www.http.HttpClient.openServer(HttpClient.java:463) ~[na:1.8.0_181]
at sun.net.www.http.HttpClient.openServer(HttpClient.java:558) ~[na:1.8.0_181]
at sun.net.www.http.HttpClient.<init>(HttpClient.java:242) ~[na:1.8.0_181]
at sun.net.www.http.HttpClient.New(HttpClient.java:339) ~[na:1.8.0_181]
at sun.net.www.http.HttpClient.New(HttpClient.java:357) ~[na:1.8.0_181]
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1220) ~[na:1.8.0_181]
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1156) ~[na:1.8.0_181]
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1050) ~[na:1.8.0_181]
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:984) ~[na:1.8.0_181]
at org.springframework.http.client.SimpleBufferingClientHttpRequest.executeInternal(SimpleBufferingClientHttpRequest.java:76) ~[spring-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
at org.spr
这是我的控制器class，我正在从中调用另一个服务。
public ResponseEntity<BaseResponse> verifyEmail(@RequestBody CustomerIdentity identity,
@PathVariable Integer simID) throws HttpClientErrorException {
System.out.println(this.discoveryClient.getInstances("MYAPP").get(0).getUri().toString());
return restTemplate.postForEntity("http://MYAPP"+ "/validation/" + simID, identity, BaseResponse.class);
}
这是我添加的属性
eureka.client.service-url.defaultZone=http://localhost:8761/eureka
我的服务在尤里卡注册，名称为 MYAPP。我也试过打印 url，如您所见，它给出 http://nawnit:8080 时运行ning 在固定端口上，但是当 运行ning 在随机端口上时，我得到 http://nawnit:0 （nawnit 是我的电脑名称）
这是我配置的eureka服务器属性
server.port=8761
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
logging.level.com.netflix.eureka=OFF
logging.level.com.netflix.discovery=OFF
pom.xml：
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Greenwich.M3</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-ribbon</artifactId>
<version>1.4.6.RELEASE</version>
</dependency>
注意：我正在使用的 restTemplate 配置为负载平衡。
这是一个错误，已修复。参见 https://github.com/spring-cloud/spring-cloud-netflix/issues/3294 for a test that recreated the issue. Fixes were also made here https://github.com/spring-cloud/spring-cloud-commons/issues/451
这应该会在下周（2018 年 12 月 6 日）作为 Greenwich.RC1 的一部分提供。请参阅 https://github.com/spring-cloud/spring-cloud-release/milestones 了解更新。