Re: Ceph-mgr wont start, cant find rook module

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Clarification:

On Sun, May 17, 2020 at 10:36:41PM +0200, Martin Millnert wrote:
> Hi Jeff,
> 
> Ran into the very same issue.  Filed a bug-report at https://tracker.ceph.com/issues/45574
> ceph 15.2.1 on up-to-date Debian Buster.
> 
> TL;DR: The way ceph-mgr-rook's RookOrchestrator class interacts with
> python3-numpy package is borked.
> Result: Cluster cannot start, since 'devicehealth' plugin of
> ceph-mgr is an always-on module.

Mistaken cause for cluster not starting -- cluster came from Luminous
through Nautilus to Octopus and had a ceph osd require-osd-release =
luminous, preventing OSD's from launching.  Now cluster happy Octopus,
but Python bug remain.

/M

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