[Bug 1836083] Re: regression: dashboard totally broken in disco

[Chris MacNaughton]

*** This bug is a duplicate of bug 1832105 ***
    https://bugs.launchpad.net/bugs/1832105

The bug mentions in this is currently marked as "in progress" for Disco,
so I'm marking this as a duplicate of that bug. If the existing bug
doesn't correctly resolve the issue, then the correct action is to re-
open that bug rather than open a duplicate bug.

** This bug has been marked a duplicate of bug 1832105
   ceph-mgr dashboard incompatible with cython >= 0.29 (disco)

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https://bugs.launchpad.net/bugs/1836083

Title:
  regression: dashboard totally broken in disco

Status in ceph package in Ubuntu:
  New

Bug description:
  tl;dr-- ceph Dashboard regression in disco/eaon remains, reported
  fixes are inappropriate/ineffective.

  For well over a month, ceph's web interface 'dashboard' has been
  broken in Disco, though it was working prior.  Another bug report
  claims fixes have been released in eaon, however those fixes aren't
  even for the version of ceph shipped in disco or eaon, and the nature
  of the fixes are for bugs entirely unrelated to the cause of this
  regression.  That claim of fixes is why the bug doesn't remain on the
  visible bug list.  However, it should be on the visible bug list.
  The non-fix regards details in report #1832105

  The core of the problem has to do with a version of cython later than
  what the dashboard module can cope with.  Upstream has fixes, but
  Ubuntu hasn't backported them.

  Error message:
  ceph -s
  ...
  health: HEALTH_ERR
  ...
  Module 'dashboard' has failed dependency: Interpreter change detected - this module can only be loaded into one interpreter per process.
  ...

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