[Bug 2150665] Re: cephadm: missing Depends on python3-ceph-common

[Luciano Lo Giudice]

** Description changed:

  [ Impact ]
  
-  * cephadm fails to run due to missing dependencies. In particular, the Ceph
-    Python ceph-common package is missing.
+  * cephadm fails to run due to the following missing dependencies:
+ python3-ceph-common, python3-jmespath and python3-xmltodict.
  
-  * The new packages will solve this by adding the necessary
+  * The new packages will solve this by adding the necessary
  dependencies.
  
  [ Test Plan ]
  
-  * In order to test this, the functional tests for Canonical's Ceph containers
-    repository will be run (https://github.com/canonical/ceph-containers).
+  * In order to test this, the functional tests for Canonical's Ceph containers
+    repository will be run (https://github.com/canonical/ceph-containers).
  
-  * These tests involve using the cephadm tool for cluster deployment using
-    Canonical's custom Ceph images.
+  * These tests involve using the cephadm tool for cluster deployment using
+    Canonical's custom Ceph images.
  
-  * If the new packages fix this issue, the tests will run to completion.
+  * If the new packages fix this issue, the tests will run to completion.
  
  [ Where problems could occur ]
  
-  * cephadm is used as a simple tool to deploy Ceph clusters. Notably, neither
-    the Ceph charms nor Microceph make use of it, but users of Ubuntu can make
-    use of it independently.
+  * cephadm is used as a simple tool to deploy Ceph clusters. Notably, neither
+    the Ceph charms nor Microceph make use of it, but users of Ubuntu can make
+    use of it independently.
  
-  * Any problems with cephadm will thus prevent users from deploying their own
-    Ceph clusters with the exceptions noted above
-    
+  * Any problems with cephadm will thus prevent users from deploying their own
+    Ceph clusters with the exceptions noted above
+ 
  [ Original description ]
  
  The cephadm binary package in resolute (20.2.0-0ubuntu2) imports
  ceph.cephadm.images at startup but does not declare a Depends on
  python3-ceph-common which provides that module. Running
  `cephadm bootstrap` (or any cephadm subcommand) on a fresh install
  fails immediately with:
  
-   Traceback (most recent call last):
-     File "/usr/sbin/cephadm", line 141, in <module>
-       from cephadmlib import runscripts
-     File "/usr/lib/python3/dist-packages/cephadmlib/runscripts.py", line 10, in <module>
-       ...
-     File "/usr/lib/python3/dist-packages/cephadmlib/container_types.py", line 12, in <module>
-       from ceph.cephadm.images import DefaultImages
-   ModuleNotFoundError: No module named 'ceph'
+   Traceback (most recent call last):
+     File "/usr/sbin/cephadm", line 141, in <module>
+       from cephadmlib import runscripts
+     File "/usr/lib/python3/dist-packages/cephadmlib/runscripts.py", line 10, in <module>
+       ...
+     File "/usr/lib/python3/dist-packages/cephadmlib/container_types.py", line 12, in <module>
+       from ceph.cephadm.images import DefaultImages
+   ModuleNotFoundError: No module named 'ceph'
  
  Currently declared Depends are only `lvm2 | python3` per
  https://packages.ubuntu.com/resolute/cephadm.
  
  Reproducer (LXD VM):
-   $ lxc launch --vm ubuntu:26.04 c1
-   $ lxc shell c1 -- apt-get update
-   $ lxc shell c1 -- apt-get install -y cephadm
-   $ lxc shell c1 -- cephadm version
-   ModuleNotFoundError: No module named 'ceph'
+   $ lxc launch --vm ubuntu:26.04 c1
+   $ lxc shell c1 -- apt-get update
+   $ lxc shell c1 -- apt-get install -y cephadm
+   $ lxc shell c1 -- cephadm version
+   ModuleNotFoundError: No module named 'ceph'
  
  Workaround:
-   apt-get install -y cephadm python3-ceph-common
+   apt-get install -y cephadm python3-ceph-common
  
  Expected fix: add `python3-ceph-common (>= ${binary:Version})` to
  cephadm's Depends in debian/control. The squid (19.x) cephadm in noble
  shipped as a single-file script with no Python imports beyond the
  stdlib, so this regression is specific to the Tentacle refactor that
  moved logic into cephadmlib/ and ceph/cephadm/.

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https://bugs.launchpad.net/bugs/2150665

Title:
  cephadm: missing Depends on python3-ceph-common

Status in ceph package in Ubuntu:
  In Progress
Status in ceph source package in Resolute:
  In Progress
Status in ceph source package in Stonking:
  In Progress

Bug description:
  [ Impact ]

   * cephadm fails to run due to the following missing dependencies:
  python3-ceph-common, python3-jmespath and python3-xmltodict.

   * The new packages will solve this by adding the necessary
  dependencies.

  [ Test Plan ]

   * In order to test this, the functional tests for Canonical's Ceph containers
     repository will be run (https://github.com/canonical/ceph-containers).

   * These tests involve using the cephadm tool for cluster deployment using
     Canonical's custom Ceph images.

   * If the new packages fix this issue, the tests will run to
  completion.

  [ Where problems could occur ]

   * cephadm is used as a simple tool to deploy Ceph clusters. Notably, neither
     the Ceph charms nor Microceph make use of it, but users of Ubuntu can make
     use of it independently.

   * Any problems with cephadm will thus prevent users from deploying their own
     Ceph clusters with the exceptions noted above

  [ Original description ]

  The cephadm binary package in resolute (20.2.0-0ubuntu2) imports
  ceph.cephadm.images at startup but does not declare a Depends on
  python3-ceph-common which provides that module. Running
  `cephadm bootstrap` (or any cephadm subcommand) on a fresh install
  fails immediately with:

    Traceback (most recent call last):
      File "/usr/sbin/cephadm", line 141, in <module>
        from cephadmlib import runscripts
      File "/usr/lib/python3/dist-packages/cephadmlib/runscripts.py", line 10, in <module>
        ...
      File "/usr/lib/python3/dist-packages/cephadmlib/container_types.py", line 12, in <module>
        from ceph.cephadm.images import DefaultImages
    ModuleNotFoundError: No module named 'ceph'

  Currently declared Depends are only `lvm2 | python3` per
  https://packages.ubuntu.com/resolute/cephadm.

  Reproducer (LXD VM):
    $ lxc launch --vm ubuntu:26.04 c1
    $ lxc shell c1 -- apt-get update
    $ lxc shell c1 -- apt-get install -y cephadm
    $ lxc shell c1 -- cephadm version
    ModuleNotFoundError: No module named 'ceph'

  Workaround:
    apt-get install -y cephadm python3-ceph-common

  Expected fix: add `python3-ceph-common (>= ${binary:Version})` to
  cephadm's Depends in debian/control. The squid (19.x) cephadm in noble
  shipped as a single-file script with no Python imports beyond the
  stdlib, so this regression is specific to the Tentacle refactor that
  moved logic into cephadmlib/ and ceph/cephadm/.

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