我有一个eureka服务器和两个在docker容器中运行的其他服务(eureka客户端)。如果第一个服务尝试访问第二个服务,则会收到UnknownHostException。原因是服务使用dns服务器无法解析的容器主机名在eureka服务器上注册。
我认为解决方案可能是为Docker容器设置主机名。所以我将docker与-h标志一起使用来设置主机名:docker run -h project-dev.net9.mycompany.com
但是现在这些服务甚至无法在eureka服务器上注册。我得到这个异常:
2015-11-30 12:03:42.182 ERROR 1 --- [pool-2-thread-1] com.netflix.discovery.DiscoveryClient : Can't get a response from http://project-dev.net9.mycompany.com:8761/eureka/apps/MY-SERVICE/project-dev.net9.mycompany.com
Can't contact any eureka nodes - possibly a security group issue?
com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused
at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:184)
at com.sun.jersey.api.client.filter.GZIPContentEncodingFilter.handle(GZIPContentEncodingFilter.java:120)
at com.netflix.discovery.EurekaIdentityHeaderFilter.handle(EurekaIdentityHeaderFilter.java:28)
at com.sun.jersey.api.client.Client.handle(Client.java:648)
at com.sun.jersey.api.client.WebResource.handle(WebResource.java:680)
at com.sun.jersey.api.client.WebResource.put(WebResource.java:211)
at com.netflix.discovery.DiscoveryClient.makeRemoteCall(DiscoveryClient.java:1097)
at com.netflix.discovery.DiscoveryClient.makeRemoteCall(DiscoveryClient.java:1060)
at com.netflix.discovery.DiscoveryClient.access$500(DiscoveryClient.java:105)
at com.netflix.discovery.DiscoveryClient$HeartbeatThread.run(DiscoveryClient.java:1583)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:117)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:177)
at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:144)
at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:131)
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:611)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:446)
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:863)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:115)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57)
at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:170)
... 14 common frames omitted
2015-11-30 12:03:42.182 ERROR 1 --- [pool-2-thread-1] com.netflix.discovery.DiscoveryClient : DiscoveryClient_MY-SERVICE/project-dev.net9.mycompany.com - was unable to send heartbeat!
com.sun.jersey.api.client.ClientHandlerException: java.net.ConnectException: Connection refused
at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:184)
at com.sun.jersey.api.client.filter.GZIPContentEncodingFilter.handle(GZIPContentEncodingFilter.java:120)
at com.netflix.discovery.EurekaIdentityHeaderFilter.handle(EurekaIdentityHeaderFilter.java:28)
at com.sun.jersey.api.client.Client.handle(Client.java:648)
at com.sun.jersey.api.client.WebResource.handle(WebResource.java:680)
at com.sun.jersey.api.client.WebResource.put(WebResource.java:211)
at com.netflix.discovery.DiscoveryClient.makeRemoteCall(DiscoveryClient.java:1097)
at com.netflix.discovery.DiscoveryClient.makeRemoteCall(DiscoveryClient.java:1060)
at com.netflix.discovery.DiscoveryClient.access$500(DiscoveryClient.java:105)
at com.netflix.discovery.DiscoveryClient$HeartbeatThread.run(DiscoveryClient.java:1583)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:117)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:177)
at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:144)
at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:131)
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:611)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:446)
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:863)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:115)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57)
at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:170)
... 14 common frames omitted
在我们的网络中可以访问域project-dev.net9.mycompany.com,我可以对其进行ping操作。
我还可以在http://project-dev.net9.mycompany.com:8761/下访问eureka仪表板。因此,eureka服务器正常运行。
我很感谢任何提示。
您是否尝试将eureka.instance.prefer-ip-address设置为true?客户端将使用其IP地址而不是其主机名注册自己。
每个建议在这里:问题没有答案,但问题已在评论中解决
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