OK. Phantom hosts are gone. Many thanks! I'll have to review my
checklist for decomissioning hosts to make sure that step is on it.
On the legacy/container OSD stuff, that is a complete puzzle.
While the first thing that I see when I look up "creating an OSD" in the
system documentation is the manual process, I've been using cephadm long
enough to know to dig past that. The manual process is sufficiently
tedious that I cannot think that I'd have used it by accident.
Especially since I set out with the explicit goal of using cephadm. Yet
here it is. This isn't an upgraded machine, it was constructed within
the last week from the ground up. So I have no idea how the legacy
definition got there. On two separate systems.
The disable on the legacy OSD worked and the container is now running.
Although I'm not sure that it will survive a reboot, since the legacy
service is dynamically created on each reboot.
This is what happens when I try to adopt:
cephadm adopt --style legacy --name osd.4
Pulling container image quay.io/ceph/ceph:v16...
Found online OSD at //var/lib/ceph/osd/ceph-4/fsid
objectstore_type is bluestore
Disabling old systemd unit ceph-osd@4...
Moving data...
Traceback (most recent call last):
File "/usr/sbin/cephadm", line 9509, in <module>
main()
File "/usr/sbin/cephadm", line 9497, in main
r = ctx.func(ctx)
File "/usr/sbin/cephadm", line 2061, in _default_image
return func(ctx)
File "/usr/sbin/cephadm", line 6043, in command_adopt
command_adopt_ceph(ctx, daemon_type, daemon_id, fsid)
File "/usr/sbin/cephadm", line 6210, in command_adopt_ceph
move_files(ctx, glob(os.path.join(data_dir_src, '*')),
File "/usr/sbin/cephadm", line 2215, in move_files
os.symlink(src_rl, dst_file)
FileExistsError: [Errno 17] File exists: '/dev/vg_ceph/ceph0504' ->
'/var/lib/ceph/278fcd86-0861-11ee-a7df-9c5c8e86cf8f/osd.4/block'
I have considered simply doing a brute-force removal of the OSD files in
/var/lib/ceph/osd but I'm not sure what ill effects might ensue. I
discovered that my other offending machine actually has TWO legacy OSD
directories, but only one of them is being used. The other OSD is the
remnant of a deletion and it's just dead files now.
On 7/13/24 02:39, Eugen Block wrote:
Okay, it looks like you just need some further cleanup regarding your
phantom hosts, for example:
ceph osd crush remove www2
ceph osd crush remove docker0
and so on.
Regarding the systemd unit (well, cephadm also generates one, but with
the fsid as already mentioned), you could just stop and disable the
old one:
systemctl disable --now ceph-osd@4
and see if the container takes over.
Was this your attempt to adopt an existing OSD from pre-cephadm?
ceph orch daemon add osd ceph05.internal.mousetech.com:vg_ceph/ceph0504
The recommended way would have been to adopt the device:
cephadm [--image your-custom-image] adopt --style legacy --name osd.4
locally on that host. The --image parameter is optional. Did you
follow the docs [1] when you moved to cephadm? Anyway, since it
somehow seems to work already, it's probably not that relevant
anymore, I just wanted to point to it anyway.
[1] https://docs.ceph.com/en/latest/cephadm/adoption/
Zitat von Tim Holloway <timh@xxxxxxxxxxxxx>:
This particular system has it both ways and neither wants to work.
The peculiar thing was that when I first re-created the OSD with
cephadm, it was reported that this was an "unmanaged node". So I ran
the same cephadm agin and THAT time it showed up. So I suspect that the
ceph-osd@4.service was the first install and the
ceph-~~~~~@osd.4.servuce got added on the second try.
ceph orch daemon add osd ceph05.internal.mousetech.com:vg_ceph/ceph0504
Here's the OSD tree:
ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF
-1 7.00000 root default
-25 1.00000 host ceph01
1 hdd 1.00000 osd.1 up 1.00000 1.00000
-28 1.00000 host ceph03
3 hdd 1.00000 osd.3 up 1.00000 1.00000
-11 1.00000 host ceph04
7 hdd 1.00000 osd.7 up 1.00000 1.00000
-31 1.00000 host ceph05
4 hdd 1.00000 osd.4 up 1.00000 1.00000
-9 1.00000 host ceph06
2 hdd 1.00000 osd.2 up 1.00000 1.00000
-22 1.00000 host dell02
5 ssd 1.00000 osd.5 up 1.00000 1.00000
-13 0 host docker0
-5 0 host www2
-3 0 host www6
-7 1.00000 host www7
0 hdd 1.00000 osd.0 up 1.00000 1.00000
Note that www2 was recommissioned and replaced by the ceph05 machine
and no longer physically exists. www6 was the original/admin ceph node
with all the accumulated glop. It ran on the base OS (not in a VM) and
I have not attempted to re-create that. Ceph remembers it from its own
internal memory, as the original www6 system drive was replaced with an
SSD and the OS was installed from scratch. The docker0 machine was
never a ceph node. It's the phantom that got yanked it because I
accidentally supplied its IP address when doing a ceph orch host add
for a completely different machine.
And here's the host list as the orchestrator sees it:
ceph orch host ls
HOST ADDR LABELS STATUS
ceph01.internal.mousetech.com 10.0.1.21
ceph03.internal.mousetech.com 10.0.1.53
ceph04.mousetech.com 10.0.1.14
ceph05.internal.mousetech.com 10.0.1.54
ceph06.internal.mousetech.com 10.0.1.56
dell02.mousetech.com 10.0.1.52 _admin rgw
www7.mousetech.com 10.0.1.7 rgw
7 hosts in cluster
On Fri, 2024-07-12 at 22:15 +0000, Eugen Block wrote:
Hi,
containerized daemons usually have the fsid in the systemd unit,
like
ceph-{fsid}@osd.5
Is it possible that you have those confused? Check the
/var/lib/ceph/osd/ directory to find possible orphaned daemons and
clean them up.
And as previously stated, it would help to see your osd tree and
which
OSDs you’re talking about.
Zitat von Tim Holloway <timh@xxxxxxxxxxxxx>:
> Incidentally, I just noticed that my phantom host isn't completely
> gone. It's not in the host list, either command-line or dashboard,
> but
> it does list (with no assets) as a host under "ceph osd tree".
>
> ---
>
> More seriously, I've been having problems with OSDs that report as
> being both up and down at the same time.
>
> This is on 2 new hosts. One host saw this when I made it the _admin
> host. The other caught it because it's running in a VM with the OSD
> mapped out as an imported disk and the host os managed to flip
> which
> drive was sda and which was sbd, resulting in having to delete and
> re-
> define the OSD in the VM.
>
> But now the OSD on this VM reports as "UP/IN" on the dashboard
> while
> it's "error" on "ceph orch ps" and on the actual vbox, the osd
> container fails on startup. viz:
>
> ul 12 20:06:48 ceph05.internal.mousetech.com ceph-278fcd86-0861-
> 11ee-
> a7df-9c5c8e86cf8f-osd-4[4017]: debug 2024-07-12T20:06:48.056+0000
> 7fc17dfb9380 -1 bdev(0x55e4853c4800 /var/lib/ceph/osd/ceph-4/block)
> open open got: (16) De>
> Jul 12 20:06:48 ceph05.internal.mousetech.com ceph-278fcd86-0861-
> 11ee-
> a7df-9c5c8e86cf8f-osd-4[4017]: debug 2024-07-12T20:06:48.056+0000
> 7fc17dfb9380 -1 osd.4 0 OSD:init: unable to mount object store
> Jul 12 20:06:48 ceph05.internal.mousetech.com ceph-278fcd86-0861-
> 11ee-
> a7df-9c5c8e86cf8f-osd-4[4017]: debug 2024-07-12T20:06:48.056+0000
> 7fc17dfb9380 -1 ** ERROR: osd init failed: (16) Device or resource
> busy
>
> Note that truncated message above reads
>
> bdev(0x55e4853c4800 /var/lib/ceph/osd/ceph-4/block) open open got:
> (16)
> Device or resource busy
>
> Rebooting doesn't help. Nor does freeing us resources and
> stopping/starting processes manually. The problem eventually
> cleared up
> spontaneously on the admin box, but I have no idea why.
>
> ---
>
> Also noted that now the OSD on the admin box shows in ceph orch ps
> as
> "stopped", though again, the dashboard lists it as "UP/IN".
>
> Here's what systemctl thinks about it:
>
> systemctl status ceph-osd@5.service
> ● ceph-osd@5.service - Ceph object storage daemon osd.5
> Loaded: loaded (/usr/lib/systemd/system/ceph-osd@.service;
> enabled-runtime; preset: disabled)
> Active: active (running) since Fri 2024-07-12 16:45:51 EDT;
> 1min
> 40s ago
> Process: 8511 ExecStartPre=/usr/libexec/ceph/ceph-osd-
> prestart.sh -
> -cluster ${CLUSTER} --id 5 (code=exited, status=0/SUCCESS)
> Main PID: 8517 (ceph-osd)
> Tasks: 70
> Memory: 478.6M
> CPU: 3.405s
> CGroup: /system.slice/system-
> ceph\x2dosd.slice/ceph-osd@5.service
> └─8517 /usr/bin/ceph-osd -f --cluster ceph --id 5 --
> setuser ceph --setgroup ceph
>
> Jul 12 16:45:51 dell02.mousetech.com systemd[1]: Starting Ceph
> object
> storage daemon osd.5...
> Jul 12 16:45:51 dell02.mousetech.com systemd[1]: Started Ceph
> object
> storage daemon osd.5.
> Jul 12 16:45:51 dell02.mousetech.com ceph-osd[8517]: 2024-07-
> 12T16:45:51.642-0400 7f2bd440c140 -1 Falling back to public
> interface
> Jul 12 16:45:58 dell02.mousetech.com ceph-osd[8517]: 2024-07-
> 12T16:45:58.352-0400 7f2bd440c140 -1 osd.5 34161 log_to_monitors
> {default=true}
> Jul 12 16:45:59 dell02.mousetech.com ceph-osd[8517]: 2024-07-
> 12T16:45:59.206-0400 7f2bcbbf0640 -1 osd.5 34161 set_numa_affinity
> unable to identify public interface '' numa node: (2) No such file
> or
> directory
>
> The actual container is not running.
>
> Ceph version, incidentally, is 16.2.15. Except for that one node
> that
> apparently didn't move up from Octupus (I'll be nuking that one
> shortly).
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