解决 搭建Jekins过程中 启动Tomcat的java.net.UnknownHostException异常

11-Nov-2016 06:01:33.229 WARNING [Computer.threadPoolForRemoting [#1]] null.null Could not intialize the host network interface on nullbecause of an error: myserver: myserver: unknown error
 java.net.UnknownHostException: myserver: myserver: unknown error
    at java.net.InetAddress.getLocalHost(InetAddress.java:1505)
    at javax.jmdns.impl.HostInfo.newHostInfo(HostInfo.java:75)
    at javax.jmdns.impl.JmDNSImpl.<init>(JmDNSImpl.java:407)
    at javax.jmdns.JmDNS.create(JmDNS.java:60)
    at hudson.DNSMultiCast$1.call(DNSMultiCast.java:33)
    at jenkins.util.ContextResettingExecutorService$2.call(ContextResettingExecutorService.java:46)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.UnknownHostException: myserver: unknown error
    at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
    at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
    at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
    at java.net.InetAddress.getLocalHost(InetAddress.java:1500)
    ... 9 more

在Linux Tomcat下启动Jekins的时候报以上的错误，究其原因是因为服务器配置了自定义的host name 没有在hosts文件中定义.

解决方法如下：

1. 查看自己服务器的host name

# hostname

2. 进入etc/hosts 编辑，在下面加一行：

  127.0.0.1  你的hostname

3. 保存退出，重启tomcat.解决