java.net.UnknownHostException

java network-programming
Gilberto Ribeiro picture Gilberto Ribeiro · Feb 11, 2011 · Viewed 90.1k times · Source

I'm installing CSVN using jdk1.6.0_23 and I'm getting the following Java error:

2011-02-10 16:25:50,951 [WrapperJarAppMain] WARN util.GrailsUtil - [WARNING] Property [ldapServerPort] of domain class com.collabnet.svnedge.console.Server has type [int] and doesn't support constraint [nullable]. This constraint will not be checked during validation.
2011-02-10 16:25:51,117 [WrapperJarAppMain] ERROR ehcache.Cache - Unable to set localhost. This prevents creation of a GUID. Cause was: vkqgae01: vkqgae01
java.net.UnknownHostException: vkqgae01: vkqgae01
at java.net.InetAddress.getLocalHost(InetAddress.java:1354)
at net.sf.ehcache.Cache.<clinit>(Cache.java:143)

My server has 3 NICs (eth0, eth1 and eth2). I've added an entry to the hosts file bellow localhost containing the following:

127.0.0.1 vkqgae01

I can successfully ping vkqgae01, but nslookup cannot resolve it.

Any ideas?

Answer

atomsfat picture atomsfat · Sep 29, 2011

That is related with

hostname

and

/etc/hosts

If /etc/hosts doesn't containt the definition of the hostname it fails. Just add your hostname to /etc/host for example if your hostname is work add or modified the following line:

127.0.0.1   work        localhost

Related questions

Recommended way to get hostname in Java

Which of the following is the best and most portable way to get the hostname of the current computer in Java? Runtime.getRuntime().exec("hostname") vs InetAddress.getLocalHost().getHostName()

Read More
java.net.URLEncoder.encode(String) is deprecated, what should I use instead?

I get the following warning when using java.net.URLEncoder.encode: warning: [deprecation] encode(java.lang.String) in java.net.URLEncoder has been deprecated What should I be using instead?

Read More
Getting the 'external' IP address in Java

I'm not too sure how to go about getting the external IP address of the machine as a computer outside of a network would see it. My following IPAddress class only gets the local IP address of the machine. public …

Read More