I've attached a simple script to reproduce this behaviour outside of placement.
I'm struggling to find where but AFAICT the oslo.config code parsing the command line args is failing and defaulting to the default help func for the top level command parser. # cat /etc/redhat-release Fedora release 28 (Twenty Eight) # python --version Python 2.7.15 # pip freeze | grep oslo.config oslo.config==6.7.0 # python reproduce.py cmd bar <bound method Commands.bar of <__main__.Commands object at 0x7f50d187c110>> # cat /etc/redhat-release CentOS Linux release 7.5.1804 (Core) # python --version Python 2.7.5 # pip freeze | grep oslo.config oslo.config==6.7.0 # python reproduce.py cmd bar <bound method _CachedArgumentParser.print_help of _CachedArgumentParser(prog='reproduce cmd', usage=None, description=None, version=None, formatter_class=<class 'argparse.HelpFormatter'>, conflict_handler='error', add_help=True)> ** Attachment added: "reproduce.py" https://bugs.launchpad.net/nova/+bug/1804420/+attachment/5215276/+files/reproduce.py ** Also affects: oslo.config Importance: Undecided Status: New -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). https://bugs.launchpad.net/bugs/1804420 Title: placement unit test placement.tests.unit.cmd.test_manage.TestCommandParsers.test_commands_associated fails on CentOS 7 Status in OpenStack Compute (nova): New Status in oslo.config: New Bug description: Test placement.tests.unit.cmd.test_manage.TestCommandParsers.test_commands_associated fails to run using tox -epy27 on CentOS 7. However, it works fine on Fedora 28 (with a different Python 2 version). I get the following: placement.tests.unit.cmd.test_manage.TestCommandParsers.test_commands_associated -------------------------------------------------------------------------------- Captured stdout: ~~~~~~~~~~~~~~~~ usage: run db [-h] {sync,version} ... optional arguments: -h, --help show this help message and exit subcommands: database commands {sync,version} sync Sync the datatabse to the current version. version Report the current database version. Captured traceback: ~~~~~~~~~~~~~~~~~~~ Traceback (most recent call last): File "placement/tests/unit/cmd/test_manage.py", line 55, in test_commands_associated mock_command.assert_called_once_with() File "/placement/.tox/py27/lib/python2.7/site-packages/mock/mock.py", line 947, in assert_called_once_with raise AssertionError(msg) AssertionError: Expected 'db_version' to be called once. Called 0 times. This started to fail since https://review.openstack.org/600161 was merged. To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1804420/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : [email protected] Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
