Re: Debian 12 (bookworm) / Reef 18.2.1 problems

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On Tue, Jan 16, 2024 at 12:11 AM Chris Palmer <chris.palmer@xxxxxxxxx>
wrote:

> Updates on both problems:
>
> Problem 1
> --------------
>
> The bookworm/reef cephadm package needs updating to accommodate the last
> change in /usr/share/doc/adduser/NEWS.Debian.gz:
>
>    System user home defaults to /nonexistent if --home is not specified.
>    Packages that call adduser to create system accounts should explicitly
>    specify a location for /home (see Lintian check
>    maintainer-script-lacks-home-in-adduser).
>
> i.e. when creating the cephadm user as a system user it needs to
> explicitly specify the expected home directory of /home/cephadm.
>

Hi Chris, thank you for the bug report and the suggestion. could you please
file a tracker ticket, so we can track and backport the related fixes? i
just
created https://github.com/ceph/ceph/pull/55218 in hope to alleviate the
problem.


>
> A workaround is to manually create the user+directory before installing
> ceph.
>
>
> Problem 2
> --------------
>
> This is a complex set of interactions that prevent many mgr modules
> (including dashboard) from running. It is NOT debian-specific and will
> eventually bite other distributions as well. At the moment Ceph PR54710
> looks the most promising fix (full or partial). Detail is spread across
> the following:
>
> https://github.com/pyca/cryptography/issues/9016
> https://github.com/ceph/ceph/pull/54710
> https://tracker.ceph.com/issues/63529
>
> https://forum.proxmox.com/threads/ceph-warning-post-upgrade-to-v8.129371/page-5
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1055212
> https://github.com/pyca/bcrypt/issues/694


IIUC, a backport of https://github.com/ceph/ceph/pull/54710 to reef would
address this issue, am i right?


>
>
>
> On 12/01/2024 14:29, Chris Palmer wrote:
> > More info on problem 2:
> >
> > When starting the dashboard, the mgr seems to try to initialise
> > cephadm, which in turn uses python crypto libraries that lead to the
> > python error:
> >
> > $ ceph crash info
> > 2024-01-12T11:10:03.938478Z_2263d2c8-8120-417e-84bc-bb01f5d81e52
> > {
> >     "backtrace": [
> >         "  File \"/usr/share/ceph/mgr/cephadm/__init__.py\", line 1,
> > in <module>\n    from .module import CephadmOrchestrator",
> >         "  File \"/usr/share/ceph/mgr/cephadm/module.py\", line 15, in
> > <module>\n    from cephadm.service_discovery import ServiceDiscovery",
> >         "  File \"/usr/share/ceph/mgr/cephadm/service_discovery.py\",
> > line 20, in <module>\n    from cephadm.ssl_cert_utils import SSLCerts",
> >         "  File \"/usr/share/ceph/mgr/cephadm/ssl_cert_utils.py\",
> > line 8, in <module>\n    from cryptography import x509",
> >         "  File
> > \"/lib/python3/dist-packages/cryptography/x509/__init__.py\", line 6,
> > in <module>\n    from cryptography.x509 import certificate_transparency",
> >         "  File
> >
> \"/lib/python3/dist-packages/cryptography/x509/certificate_transparency.py\",
>
> > line 10, in <module>\n    from cryptography.hazmat.bindings._rust
> > import x509 as rust_x509",
> >         "ImportError: PyO3 modules may only be initialized once per
> > interpreter process"
> >     ],
> >     "ceph_version": "18.2.1",
> >     "crash_id":
> > "2024-01-12T11:10:03.938478Z_2263d2c8-8120-417e-84bc-bb01f5d81e52",
> >     "entity_name": "mgr.xxxxx01",
> >     "mgr_module": "cephadm",
> >     "mgr_module_caller": "PyModule::load_subclass_of",
> >     "mgr_python_exception": "ImportError",
> >     "os_id": "12",
> >     "os_name": "Debian GNU/Linux 12 (bookworm)",
> >     "os_version": "12 (bookworm)",
> >     "os_version_id": "12",
> >     "process_name": "ceph-mgr",
> >     "stack_sig":
> > "7815ad73ced094695056319d1241bf7847da19b4b0dfee7a216407b59a7e3d84",
> >     "timestamp": "2024-01-12T11:10:03.938478Z",
> >     "utsname_hostname": "xxxxx01.xxx.xxx",
> >     "utsname_machine": "x86_64",
> >     "utsname_release": "6.1.0-17-amd64",
> >     "utsname_sysname": "Linux",
> >     "utsname_version": "#1 SMP PREEMPT_DYNAMIC Debian 6.1.69-1
> > (2023-12-30)"
> > }
> >
> >
> > On 12/01/2024 12:39, Chris Palmer wrote:
> >> I was delighted to see the native Debian 12 (bookworm) packages turn
> >> up in Reef 18.2.1.
> >>
> >> We currently run a number of ceph clusters on Debian11 (bullseye) /
> >> Quincy 17.2.7. These are not cephadm-managed.
> >>
> >> I have attempted to upgrade a test cluster, and it is not going well.
> >> Quincy only supports bullseye, and Reef only supports bookworm, we
> >> are reinstalling from bare metal. However I don't think either of
> >> these two problems are related to that.
> >>
> >> Problem 1
> >> --------------
> >>
> >> A simple "apt install ceph" goes most of the way, then errors with
> >>
> >> Setting up cephadm (18.2.1-1~bpo12+1) ...
> >> usermod: unlocking the user's password would result in a passwordless
> >> account.
> >> You should set a password with usermod -p to unlock this user's
> >> password.
> >> mkdir: cannot create directory ‘/home/cephadm/.ssh’: No such file or
> >> directory
> >> dpkg: error processing package cephadm (--configure):
> >>  installed cephadm package post-installation script subprocess
> >> returned error exit status 1
> >> dpkg: dependency problems prevent configuration of ceph-mgr-cephadm:
> >>  ceph-mgr-cephadm depends on cephadm; however:
> >>   Package cephadm is not configured yet.
> >>
> >> dpkg: error processing package ceph-mgr-cephadm (--configure):
> >>  dependency problems - leaving unconfigured
> >>
> >>
> >> The two cephadm-related packages are then left in an error state,
> >> which apt tries to continue each time it is run.
> >>
> >> The cephadm user has a login directory of /nonexistent, however the
> >> cephadm --configure script is trying to use /home/cephadm (as it was
> >> on Quincy/bullseye).
> >>
> >> So, we aren't using cephadm, and decided to keep going as the other
> >> packages were actually installed, and deal with the package state later.
> >>
> >> Problem 2
> >> ---------------
> >>
> >> I upgraded 2/3 monitor nodes without any other problems, and (for the
> >> moment) removed the other Quincy monitor prior to rebuild.
> >>
> >> I then shutdown the remaining Quincy manager, and attempted to start
> >> the Reef manager. Although the manager is running, "ceph mgr
> >> services" shows it is only providing the restful and not the
> >> dashboard service. The log file has lots of the following error:
> >>
> >> ImportError: PyO3 modules may only be initialized once per
> >> interpreter process
> >>
> >> and ceph -s reports "Module 'dashboard' has failed dependency: PyO3
> >> modules may only be initialized once per interpreter process
> >>
> >>
> >> Questions
> >> ---------------
> >>
> >> 1. Have the Reef/bookworm packages ever been tested in a non-cephadm
> >> environment?
> >> 2. I want to revert this cluster back to a fully functional state. I
> >> cannot bring back up the remaining Quincy monitor though ("require
> >> release 18 > 17"). Would I have to go through the procedure of
> >> starting over, and trying to rescue the monmap from the OSDs? (OSDs
> >> and an active MDS are still up and running Quincy). I'm aware that
> >> process exists but have never had to delve into it.
> >>
> >>
> >> Thanks, Chris
> >> _______________________________________________
> >> ceph-users mailing list -- ceph-users@xxxxxxx
> >> To unsubscribe send an email to ceph-users-leave@xxxxxxx
> > _______________________________________________
> > ceph-users mailing list -- ceph-users@xxxxxxx
> > To unsubscribe send an email to ceph-users-leave@xxxxxxx
> _______________________________________________
> ceph-users mailing list -- ceph-users@xxxxxxx
> To unsubscribe send an email to ceph-users-leave@xxxxxxx
>


-- 
Regards
Kefu Chai
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