Ceph » mgr » Dashboard

NOTE: This can't be reproduced in upstream CI testing.

This is an exception from downstream make check testing:

(In run-tox-mgr-dashboard test)

check create: /opt/j/ws/mkck/src/pybind/mgr/dashboard/.tox/check
check installdeps: six==1.11.0
WARNING: Discarding $PYTHONPATH from environment, to override specify PYTHONPATH in 'passenv' in your configuration.
check installed: -f /opt/j/ws/mkck/src/pybind/mgr/dashboard/wheelhouse,six==1.11.0
check run-test-pre: PYTHONHASHSEED='2977883102'
check run-test: commands[0] | python ci/check_grafana_uids.py frontend/src/app ../../../../monitoring/grafana/dashboards
Traceback (most recent call last):
  File "ci/check_grafana_uids.py", line 154, in <module>
    main()
  File "ci/check_grafana_uids.py", line 116, in main
    tags = get_tags(args.angular_app_dir)
  File "ci/check_grafana_uids.py", line 74, in get_tags
    parser.parse()
  File "ci/check_grafana_uids.py", line 38, in parse
    self.feed(f.read())
  File "/opt/j/ws/mkck/src/pybind/mgr/dashboard/.tox/check/lib64/python3.6/encodings/ascii.py", line 26, in decode
    return codecs.ascii_decode(input, self.errors)[0]
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 4010: ordinal not in range(128)
ERROR: InvocationError for command /opt/j/ws/mkck/src/pybind/mgr/dashboard/.tox/check/bin/python ci/check_grafana_uids.py frontend/src/app ../../../../monitoring/grafana/dashboards (exited with code 1)

The error happens when scanning a html file contains `x` non-ascii character.(https://github.com/ceph/ceph/blob/64bd0e2ab46292279dbde5b8e6767991c7829ff2/src/pybind/mgr/dashboard/frontend/src/app/shared/components/notifications-sidebar/notifications-sidebar.component.html#L116).
Looks like somehow open function opened files in ascii encoding even in python3 environment.