Public bug reported:
Title:
ceph-mgr-diskprediction-local fails with AttributeError: 'SVC' object has no
attribute 'break_ties'
Environment:
- Ubuntu 22.04 LTS (Jammy)
- Charmed Ceph
- Ceph Reef 18.2.4
- ceph-mgr-diskprediction-local 18.2.4-0ubuntu1~cloud1
- python3-sklearn 0.23.2-5ubuntu6
Description:
After installing and enabling the diskprediction_local module, the
module fails and cannot provide disk life expectancy predictions.
Installation:
apt install ceph-mgr-diskprediction-local
ceph mgr module enable diskprediction_local
The module appears briefly as enabled, but prediction requests fail:
ceph device predict-life-expectancy
ATA_SSDSC2KG019TZR_BTYJ406101C81P9CGN
Output:
Error EPERM: unable to invoke diskprediction local or remote plugin
Cluster log reports:
MGR_MODULE_ERROR: Module 'diskprediction_local' has failed:
'SVC' object has no attribute 'break_ties'
Package versions:
# dpkg -l | grep ceph-mgr-diskprediction-local
ii ceph-mgr-diskprediction-local 18.2.4-0ubuntu1~cloud1
# apt policy python3-sklearn
Installed: 0.23.2-5ubuntu6
# python3 -c "import sklearn; print(sklearn.__version__)"
0.23.2
Verification performed:
ceph device monitoring on
ceph device ls
ceph device get-health-metrics ATA_SSDSC2KG019TZR_BTYJ406101C81P9CGN
All above commands work correctly.
The devicehealth module successfully collects SMART data and wear
information. The problem is limited to the diskprediction_local module.
Current cluster status:
ceph -s
health: HEALTH_OK
mon: 3 daemons in quorum
mgr: 1 active, 2 standby
osd: 96 up, 96 in
pgs: 3673 active+clean
Expected result:
ceph device predict-life-expectancy <device>
should return a life expectancy estimate.
Actual result:
Error EPERM: unable to invoke diskprediction local or remote plugin
and the module fails with:
AttributeError: 'SVC' object has no attribute 'break_ties'
Possible cause:
The diskprediction_local module appears to rely on an sklearn SVC
attribute named 'break_ties' that is not available in the version of
scikit-learn shipped with Ubuntu Jammy (0.23.2).
** Affects: ceph (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2170715
Title:
ceph-mgr-diskprediction-local fails on Reef 18.2.4 with
AttributeError: 'SVC' object has no attribute '
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