当网络=主机时，牧场主无法找到链接

问题描述：

我有一个服务发现和一个客户端在Rancher中注册到此服务器。它是这样的：当网络=主机时，牧场主无法找到链接

eureka-server: 
    ports: 
    - 8761:8761/tcp 
    labels: 
    io.rancher.container.pull_image: always 
    io.rancher.container.start_once: 'true' 
    tty: true 
    image: luizkowalski/eureka-server 
    stdin_open: true 
    net: host 
edge-server: 
    ports: 
    - 8080:8080/tcp 
    labels: 
    io.rancher.container.pull_image: always 
    io.rancher.container.start_once: 'true' 
    tty: true 
    image: luizkowalski/edge-server 
    links: 
    - eureka-server:discovery 
    stdin_open: true 
    net: host

给出的链接，我应该能够使用主机名discovery连接到eureka-server，像http://discovery:8761/eureka但我发现

10/28/2016 2:04:55 PMCaused by: java.net.UnknownHostException: discovery 
10/28/2016 2:04:55 PM at java.net.InetAddress.getAllByName0(InetAddress.java:1280) ~[na:1.8.0_92-internal] 
10/28/2016 2:04:55 PM at java.net.InetAddress.getAllByName(InetAddress.java:1192) ~[na:1.8.0_92-internal] 
10/28/2016 2:04:55 PM at java.net.InetAddress.getAllByName(InetAddress.java:1126) ~[na:1.8.0_92-internal] 
10/28/2016 2:04:55 PM at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:45) ~[httpclient-4.5.2.jar!/:4.5.2] 
10/28/2016 2:04:55 PM at org.apache.http.impl.conn.DefaultClientConnectionOperator.resolveHostname(DefaultClientConnectionOperator.java:262) ~[httpclient-4.5.2.jar!/:4.5.2] 
10/28/2016 2:04:55 PM at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:161) ~[httpclient-4.5.2.jar!/:4.5.2] 
10/28/2016 2:04:55 PM at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:144) ~[httpclient-4.5.2.jar!/:4.5.2]

它的工作原理，当我使用网络作为managed Rancher，但因此，我的服务发现暴露我的内部ips到负载平衡器（172.xxx.xxx.xx），我无法呼叫我的注册服务是否有任何配置丢失呢？

答

为了访问提供链接名称解析的Rancher DNS，需要使用net：host将标签io.rancher.container.dns:true添加到服务器。

当网络=主机时，牧场主无法找到链接

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