[Bug 1892448] Re: ceph 15.2.3-0ubuntu0.20.04.2 collides with ceph-deploy 2.0.1-0ubuntu1

[Norbert]

Still broken of focal:

```
$ apt-get install ceph-base ceph-deploy
...
Unpacking ceph-deploy (2.0.1-0ubuntu1) ...
dpkg: error processing archive /tmp/apt-dpkg-install-ZP1daC/27-ceph-deploy_2.0.1-0ubuntu1_all.deb (--unpack):
 trying to overwrite '/usr/share/man/man8/ceph-deploy.8.gz', which is also in package ceph-base 15.2.11-0ubuntu0.20.04.2
dmesg: read kernel buffer failed: Operation not permitted
                                                         Selecting previously unselected package ceph-mds.
Preparing to unpack .../28-ceph-mds_15.2.11-0ubuntu0.20.04.2_amd64.deb ...
Unpacking ceph-mds (15.2.11-0ubuntu0.20.04.2) ...
Selecting previously unselected package ibverbs-providers:amd64.
Preparing to unpack .../29-ibverbs-providers_28.0-1ubuntu1_amd64.deb ...
Unpacking ibverbs-providers:amd64 (28.0-1ubuntu1) ...
Errors were encountered while processing:
 /tmp/apt-dpkg-install-ZP1daC/27-ceph-deploy_2.0.1-0ubuntu1_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

```

Seen on https://askubuntu.com/q/1345687/66509 .

** Tags added: focal

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https://bugs.launchpad.net/bugs/1892448

Title:
  ceph 15.2.3-0ubuntu0.20.04.2 collides with ceph-deploy 2.0.1-0ubuntu1

Status in ceph package in Ubuntu:
  Fix Released
Status in ceph source package in Focal:
  In Progress
Status in ceph source package in Groovy:
  In Progress
Status in ceph source package in Hirsute:
  Fix Committed

Bug description:
  [Impact]
  Not possible to install ceph and ceph-deploy binary packages due to conflicting manpage.

  [Test Case]
  sudo apt install ceph-base ceph-deploy
  [error as in original bug report]

  [Regression Discussion]
  The fix simply drops the ceph-deploy manpage from the ceph-base binary package.

  [Original Bug Report]
  On an Ubuntu 20.04 installation with the focal-proposed repos enabled and both the ceph/ceph-base/ceph-* packages (which are in main) and the ceph-deploy package (which is in universe) installed, the upgrade from ceph 15.2.3-0ubuntu0.20.04.1 to ceph 15.2.3-0ubuntu0.20.04.2 breaks with the following error message:

  dpkg: error processing archive /var/cache/apt/archives/ceph-base_15.2.3-0ubuntu0.20.04.2_amd64.deb (--unpack):
   trying to overwrite '/usr/share/man/man8/ceph-deploy.8.gz', which is also in package ceph-deploy 2.0.1-0ubuntu1

  I wasn't even able to solve this by trying to uninstall/purge ceph-
  deploy using apt-get or aptitude - instead, I had to resort to

  dpkg --remove --force-remove-reinstreq ceph-deploy

  I think this is a bug in ceph 15.2.3-0ubuntu0.20.04.2, more
  specifically in the packaging of ceph-base 15.2.3-0ubuntu0.20.04.2,
  which probably shouldn't contain the man page for ceph-deploy since it
  doesn't seem to contain any other ceph-deploy files either.

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