Local host not known error when running wlst scripts

March 27, 2014

If you are running your own scripts or attempting to run some of the scripts on this blog and you encounter the error

Starting createMachine script ....  
Connecting to t3://hostname:7001 with userid weblogic ...  
This Exception occurred at Sun Mar 23 21:44:02 GMT 2014.  
weblogic.utils.NestedError: Local host not known?!  
Problem invoking WLST - Traceback (innermost last):  
  File "/Oracle/Middleware/Oracle_Home/oracle_common/common/bin/create_machine.py", line 7, in ?  
  File "<iostream>", line 19, in connect  
  File "<iostream>", line 520, in raiseWLSTException  
WLSTException: Error occurred while performing connect : Error connecting to the server : Local host not known?!   
Use dumpStack() to view the full stacktrace :

On the line that connects to the AdminServer, while the error is strange the reason is fairly simple. The AdminServer isn’t running, start it up and you should be back in action again.

Written by David Kerwick who lives and works Dublin as a Java Technical Lead.