Comment 2 for bug 1901698

/var/log/kolla/freezer/freezer-scheduler.log shows this:

102640 2020-10-27 12:50:09.625 6 ERROR freezer-scheduler
102641 2020-10-27 12:51:13.074 7 CRITICAL freezer-scheduler [-] Unhandled error: OSError: [Errno 88] Socket operation on non-socket
102642 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler Traceback (most recent call last):
102643 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler File "/var/lib/kolla/venv/bin/freezer-scheduler", line 8, in <module>
102644 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler sys.exit(main())
102645 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler File "/var/lib/kolla/venv/lib/python3.8/site-packages/freezer/scheduler/freezer_scheduler.py", line 253, in main
102646 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler daemon.start()
102647 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler File "/var/lib/kolla/venv/lib/python3.8/site-packages/freezer/scheduler/daemon.py", line 178, in start
102648 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler with DaemonContext(pidfile=pidfile, signal_map=self.signal_map,
102649 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler File "/var/lib/kolla/venv/lib/python3.8/site-packages/freezer/lib/pep3143daemon/daemon.py", line 132, in __init__
102650 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler self.detach_process = detach_required()
102651 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler File "/var/lib/kolla/venv/lib/python3.8/site-packages/freezer/lib/pep3143daemon/daemon.py", line 416, in detach_required
102652 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler if parent_is_inet() or parent_is_init():
102653 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler File "/var/lib/kolla/venv/lib/python3.8/site-packages/freezer/lib/pep3143daemon/daemon.py", line 394, in parent_is_inet
102654 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler sock = socket.fromfd(
102655 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler File "/usr/lib/python3.8/socket.py", line 544, in fromfd
102656 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler return socket(family, type, proto, nfd)
102657 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler File "/usr/lib/python3.8/socket.py", line 231, in __init__
102658 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler _socket.socket.__init__(self, family, type, proto, fileno)
102659 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler OSError: [Errno 88] Socket operation on non-socket
102660 2020-10-27 12:51:13.074 7 ERROR freezer-scheduler