I'm having intermittent issues authenticating with Jenkins.  I use LDAP 
with Active Directory.  My Jenkins server is on Ubuntu 12.04 Server, and AD 
is running on Windows 2008 R2.

When authentication fails, I see this in my logs:

Apr 01, 2014 2:15:04 PM hudson.security.AuthenticationProcessingFilter2 
onUnsuccessfulAuthentication
INFO: Login attempt failed
org.acegisecurity.AuthenticationServiceException: LdapCallback;null; nested 
exception is javax.naming.PartialResultException [Root exception is 
javax.naming.CommunicationException: mysubdomain.mydomain.org:389 [Root 
exception is java.net.NoRouteToHostException: No route to host]]; nested 
exception is org.acegisecurity.ldap.LdapDataAccessException: 
LdapCallback;null; nested exception is javax.naming
.PartialResultException [Root exception is 
javax.naming.CommunicationException: mysubdomain.mydomain.org:389 [Root 
exception is java.net.NoRouteToHostException: No route to host]]
        at 
org.acegisecurity.providers.ldap.LdapAuthenticationProvider.retrieveUser(LdapAuthenticationProvider.java:238)
        at 
org.acegisecurity.providers.dao.AbstractUserDetailsAuthenticationProvider.authenticate(AbstractUserDetailsAuthenticationProvider.java:122)

Notice that it says "mysubdomain.mydomain.org:389" (I changed this from my 
real domain/subdomain).  mysubdomain.mydomain.org doesn't exist, and that's 
not actually the address of my AD server.  I actually have my LDAP server 
configured using an IP address.  In fact, I can't find 
"mysubdomain.mydomain.org" when I grep my configuration, so I have no idea 
where it's coming from, other than I suppose you could cobble it together 
from the root search names.

Am I mistaken in believing that it's trying to show the server name it's 
trying to connect to in the exception?

Any ideas?

Terry

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