java.net.UnknownHostException

Question

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 1

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 

Answer 2

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

Any ideas?

What happens?

• vkqgae01 is resolved locally thanks to your hosts file.
  
• nslookup sends a query to your DNS, where vkqgae01 is unknown.

Suggestion: add vkqgae01 to hosts file of every machine where you "use" it.
Basically, the fact that the local hosts file on vkqgae01 contains 127.0.0.1 localhost vkqgae01 doesn't help other machines to solve its name.