I have tried to modify /usr/lib64/ceph/mgr/balancer/module.py
replace iteritems () with items(), but I still got following error
g1:/usr/lib64/ceph/mgr/balancer # ceph balancer status
Error EINVAL: Traceback (most recent call last):
File "/usr/lib64/ceph/mgr/balancer/module.py", line 297, in handle_command
return (0, json.dumps(s, indent=4), '')
File "/usr/lib64/python3.6/json/__init__.py", line 238, in dumps
**kw).encode(obj)
File "/usr/lib64/python3.6/json/encoder.py", line 201, in encode
chunks = list(chunks)
File "/usr/lib64/python3.6/json/encoder.py", line 430, in _iterencode
yield from _iterencode_dict(o, _current_indent_level)
File "/usr/lib64/python3.6/json/encoder.py", line 404, in _iterencode_dict
yield from chunks
File "/usr/lib64/python3.6/json/encoder.py", line 437, in _iterencode
o = _default(o)
File "/usr/lib64/python3.6/json/encoder.py", line 180, in default
o.__class__.__name__)
TypeError: Object of type 'dict_keys' is not JSON serializable
it seems to me that ceph mgr is complie/written for python 3.6 but
balancer plugin is written for python 2.7... this might be related
https://github.com/ceph/ceph/pull/21446
this might be opensuse building ceph package issue
chris
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