Hi , When I install Juno AIO on CentOS7 today, I get two issues. #Issue 1, glance-api can't start up: Here is the error message in glance-api.log: 2014-09-26 07:50:39.994 22950 INFO glance.wsgi.server [-] (22950) wsgi starting up on http://0.0.0.0:9292/ 2014-09-26 07:50:39.995 22943 INFO glance.wsgi.server [-] Started child 22951 2014-09-26 07:50:39.996 22951 INFO glance.wsgi.server [-] (22951) wsgi starting up on http://0.0.0.0:9292/ 2014-09-26 07:50:39.997 22943 INFO glance.wsgi.server [-] Started child 22952 2014-09-26 07:50:39.998 22952 INFO glance.wsgi.server [-] (22952) wsgi starting up on http://0.0.0.0:9292/ 2014-09-26 07:50:40.000 22943 INFO glance.wsgi.server [-] Started child 22953 2014-09-26 07:50:40.000 22953 INFO glance.wsgi.server [-] (22953) wsgi starting up on http://0.0.0.0:9292/ 2014-09-26 07:50:40.034 22943 CRITICAL glance [-] error: [Errno 13] Permission denied 2014-09-26 07:50:40.034 22943 TRACE glance Traceback (most recent call last): 2014-09-26 07:50:40.034 22943 TRACE glance File "/usr/bin/glance-api", line 10, in <module> 2014-09-26 07:50:40.034 22943 TRACE glance sys.exit(main()) 2014-09-26 07:50:40.034 22943 TRACE glance File "/usr/lib/python2.7/site-packages/glance/cmd/api.py", line 84, in main 2014-09-26 07:50:40.034 22943 TRACE glance systemd.notify_once() 2014-09-26 07:50:40.034 22943 TRACE glance File "/usr/lib/python2.7/site-packages/glance/openstack/common/systemd.py", line 66, in notify_once 2014-09-26 07:50:40.034 22943 TRACE glance _sd_notify(True, 'READY=1') 2014-09-26 07:50:40.034 22943 TRACE glance File "/usr/lib/python2.7/site-packages/glance/openstack/common/systemd.py", line 39, in _sd_notify 2014-09-26 07:50:40.034 22943 TRACE glance sock = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM) 2014-09-26 07:50:40.034 22943 TRACE glance File "/usr/lib/python2.7/site-packages/eventlet/greenio.py", line 125, in __init__ 2014-09-26 07:50:40.034 22943 TRACE glance fd = _original_socket(family_or_realsock, *args, **kwargs) 2014-09-26 07:50:40.034 22943 TRACE glance File "/usr/lib64/python2.7/socket.py", line 187, in __init__ 2014-09-26 07:50:40.034 22943 TRACE glance _sock = _realsocket(family, type, proto) 2014-09-26 07:50:40.034 22943 TRACE glance error: [Errno 13] Permission denied 2014-09-26 07:50:40.034 22943 TRACE glance #Issue 2, nova-api can't start up: The error message in nova-api.log: 2014-09-26 07:59:42.206 28353 TRACE nova Traceback (most recent call last): 2014-09-26 07:59:42.206 28353 TRACE nova File "/usr/bin/nova-api", line 10, in <module> 2014-09-26 07:59:42.206 28353 TRACE nova sys.exit(main()) 2014-09-26 07:59:42.206 28353 TRACE nova File "/usr/lib/python2.7/site-packages/nova/cmd/api.py", line 55, in main 2014-09-26 07:59:42.206 28353 TRACE nova server = service.WSGIService(api, use_ssl=should_use_ssl) 2014-09-26 07:59:42.206 28353 TRACE nova File "/usr/lib/python2.7/site-packages/nova/service.py", line 331, in __init__ 2014-09-26 07:59:42.206 28353 TRACE nova self.manager = self._get_manager() 2014-09-26 07:59:42.206 28353 TRACE nova File "/usr/lib/python2.7/site-packages/nova/service.py", line 383, in _get_manager 2014-09-26 07:59:42.206 28353 TRACE nova return manager_class() 2014-09-26 07:59:42.206 28353 TRACE nova File "/usr/lib/python2.7/site-packages/nova/api/manager.py", line 30, in __init__ 2014-09-26 07:59:42.206 28353 TRACE nova self.network_driver.metadata_accept() 2014-09-26 07:59:42.206 28353 TRACE nova File "/usr/lib/python2.7/site-packages/nova/network/linux_net.py", line 666, in metadata_accept 2014-09-26 07:59:42.206 28353 TRACE nova iptables_manager.apply() 2014-09-26 07:59:42.206 28353 TRACE nova File "/usr/lib/python2.7/site-packages/nova/network/linux_net.py", line 434, in apply 2014-09-26 07:59:42.206 28353 TRACE nova self._apply() 2014-09-26 07:59:42.206 28353 TRACE nova File "/usr/lib/python2.7/site-packages/nova/openstack/common/lockutils.py", line 322, in inner 2014-09-26 07:59:42.206 28353 TRACE nova with lock(name, lock_file_prefix, external, lock_path): 2014-09-26 07:59:42.206 28353 TRACE nova File "/usr/lib64/python2.7/contextlib.py", line 17, in __enter__ 2014-09-26 07:59:42.206 28353 TRACE nova return self.gen.next() 2014-09-26 07:59:42.206 28353 TRACE nova File "/usr/lib/python2.7/site-packages/nova/openstack/common/lockutils.py", line 287, in lock 2014-09-26 07:59:42.206 28353 TRACE nova with ext_lock: 2014-09-26 07:59:42.206 28353 TRACE nova File "/usr/lib/python2.7/site-packages/nova/openstack/common/lockutils.py", line 171, in __enter__ 2014-09-26 07:59:42.206 28353 TRACE nova self.acquire() 2014-09-26 07:59:42.206 28353 TRACE nova File "/usr/lib/python2.7/site-packages/nova/openstack/common/lockutils.py", line 166, in acquire 2014-09-26 07:59:42.206 28353 TRACE nova initial_value=1) 2014-09-26 07:59:42.206 28353 TRACE nova OSError: [Errno 38] Function not implemented 2014-09-26 07:59:42.206 28353 TRACE nova I temporarily skip the two issues by run glance-api and nova-api with root user... After this , everything else works well for me. Anyone get this kind of error before? Regards, Liping Mao