I get the exact same error on brand new Centos install: Gluu-Server-Repo-1.9-0.el6.x86_64.rpm
I chose the default to get the latest oxAuth and oxTrust files.
I see this in the setup_errors.log file a couple of times:
21:47:13 12/12/14 Running: /usr/sbin/service httpd stop
21:47:13 12/12/14 Error running command : /usr/sbin/service httpd stop
21:47:13 12/12/14 Traceback (most recent call last):
File "./setup.py", line 228, in run
p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
File "/usr/lib64/python2.6/subprocess.py", line 642, in __init__
errread, errwrite)
File "/usr/lib64/python2.6/subprocess.py", line 1234, in _execute_child
raise child_exception
OSError: [Errno 2] No such file or directory