Question

I have a server that is “named” and it seems to cause Grails to be unable to find localhost.

Running Grails application..
2011-01-12 20:45:14,046 [main] ERROR ehcache.Cache  - Unable to set localhost. This prevents creation of a GUID. Cause was: zaftra: zaftra
java.net.UnknownHostException: zaftra: zaftra
    at java.net.InetAddress.getLocalHost(InetAddress.java:1426)
    at net.sf.ehcache.Cache.<clinit>(Cache.java:143)
    at net.sf.ehcache.config.ConfigurationHelper.createCache(ConfigurationHelper.java:463)
    at net.sf.ehcache.config.ConfigurationHelper.createDefaultCache(ConfigurationHelper.java:369)
    at net.sf.ehcache.CacheManager.configure(CacheManager.java:445)
    at net.sf.ehcache.CacheManager.init(CacheManager.java:302)
    at net.sf.ehcache.CacheManager.<init>(CacheManager.java:260)
    at net.sf.ehcache.hibernate.EhCacheProvider.start(EhCacheProvider.java:128)

Contents of /etc/hosts (as shown):

127.0.0.1       localhost localhost.localdomain zaftra
::1       localhost localhost.localdomain zaftra

Answer 1

I’m going to assume that you’re on some flavor of linux. If that’s the case, you might have a look at your /etc/hosts file – is there an entry for localhost? I’d expect to see something like:

127.0.0.1     localhost zaftra
::1           localhost

I did some Googling – there’s a similar question over on SuperUser – the suggestion there was to add the following to /etc/resolv.conf:

search (domainname) // in your case, search (zaftra)

You might also try:

search zaftra
// or
search zaftra.example.com // if there's a more fully-qualified domain name you can use

(That’s based off of an entry I’ve got in resolv.conf on one of my Ubuntu machines).