I followed https://tracker.ceph.com/issues/46691 to bring up the OSD. "ceph osd tree" shows it's up. "ceph pg dump" shows PGs are remapped. How can I make it to be aware by cephadm (showed up by "ceph orch ps")? Because "ceph status" complains "1 stray daemons(s) not managed by cephadm". Thanks! Tony ________________________________________ From: Kenneth Waegeman <kenneth.waegeman@xxxxxxxx> Sent: February 12, 2021 05:14 AM To: ceph-users Subject: Re: reinstalling node with orchestrator/cephadm On 08/02/2021 16:52, Kenneth Waegeman wrote: > Hi Eugen, all, > > Thanks for sharing your results! Since we have multiple clusters and > clusters with +500 OSDs, this solution is not feasible for us. > > In the meantime I created an issue for this : > > https://tracker.ceph.com/issues/49159 Hi all, For those who would have same/similar issues/questions, the ticket has been updated. it actually breaks down in two parts: - ceph-volume documentation (https://docs.ceph.com/en/latest/ceph-volume/lvm/activate/#activate <https://docs.ceph.com/en/latest/ceph-volume/lvm/activate/#activate>) notes that activate means: 'This activation process enables a systemd unit that persists the OSD ID and its UUID (also called fsid in Ceph CLI tools), so that at boot time it can understand what OSD is enabled and needs to be mounted.' -> This is not true/does not work for use with cephadm, ceph-volume can't make the osd directories/files like unit.run (yet) for osds that should run with cephadm - there is yet no way (documented) that existing OSD disks could be discovered by cephadm/ceph orch on reinstalling a node like it used to be with running ceph-volume activate --all. The workaround I see for now is running ceph-volume activate --all for id in `ls -1 /var/lib/ceph/osd`; do echo cephadm adopt --style legacy --name ${id/ceph-/osd.}; done This removes the ceph-volume units again and creates the cephadm ones :) As pointed out by Sebastian Wagner: 'Please verify that the container image used is consistent across the cluster after running the adoption process.' And thanks @Sebastian for making 'cephadm ceph-volume activate' a feature request! Kenneth > > We would need this especially to migrate/reinstall all our clusters to > Rhel8 (without destroying/recreating all osd disks), so I really hope > there is another solution :) > > Thanks again! > > Kenneth > > On 05/02/2021 16:11, Eugen Block wrote: >> Hi Kenneth, >> >> I managed to succeed with this just now. It's a lab environment and >> the OSDs are not encrypted but I was able to get the OSDs up again. >> The ceph-volume commands also worked (just activation didn't) so I >> had the required information about those OSDs. >> >> What I did was >> >> - collect the OSD data (fsid, keyring) >> - create directories for osd daemons under >> /var/lib/ceph/<CEPH_UUID>/osd.<ID> >> - note that the directory with the ceph uuid already existed since >> the crash container had been created after bringing the node back >> into the cluster >> - creating the content for that OSD by copying the required files >> from a different host and changed the contents of >> - fsid >> - keyring >> - whoami >> - unit.run >> - unit.poststop >> >> - created the symlinks to the OSD devices: >> - ln -s /dev/ceph-<VG>/osd-block-<LV> block >> - ln -s /dev/ceph-<VG>/osd-block-<LV> block.db >> >> - changed ownership to ceph >> - chown -R ceph.ceph /var/lib/ceph/<UUID>/osd.<ID>/ >> >> - started the systemd unit >> - systemctl start ceph-<CEPH_UUID>@osd.<ID>.service >> >> I repeated this for all OSDs on that host, now all OSDs are online >> and the cluster is happy. I'm not sure what else is necessary in case >> of encrypted OSDs, but maybe this procedure helps you. >> I don't know if there's a smoother or even automated way, I don't >> think there currently is. Maybe someone is working on it though. >> >> Regards, >> Eugen >> >> >> Zitat von Kenneth Waegeman <kenneth.waegeman@xxxxxxxx>: >> >>> Hi all, >>> >>> I'm running a 15.2.8 cluster using ceph orch with all daemons >>> adopted to cephadm. >>> >>> I tried reinstall an OSD node. Is there a way to make ceph >>> orch/cephadm activate the devices on this node again, ideally >>> automatically? >>> >>> I tried running `cephadm ceph-volume -- lvm activate --all` but this >>> has an error related to dmcrypt: >>> >>>> [root@osd2803 ~]# cephadm ceph-volume -- lvm activate --all >>>> Using recent ceph image docker.io/ceph/ceph:v15 >>>> /usr/bin/podman:stderr --> Activating OSD ID 0 FSID >>>> 697698fd-3fa0-480f-807b-68492bd292bf >>>> /usr/bin/podman:stderr Running command: /usr/bin/mount -t tmpfs >>>> tmpfs /var/lib/ceph/osd/ceph-0 >>>> /usr/bin/podman:stderr Running command: /usr/bin/ceph-authtool >>>> /var/lib/ceph/osd/ceph-0/lockbox.keyring --create-keyring --name >>>> client.osd-lockbox.697698fd-3fa0-480f-807b-68492bd292bf --add-key >>>> AQAy7Bdg0jQsBhAAj0gcteTEbcpwNNvMGZqTTg== >>>> /usr/bin/podman:stderr stdout: creating >>>> /var/lib/ceph/osd/ceph-0/lockbox.keyring >>>> /usr/bin/podman:stderr added entity >>>> client.osd-lockbox.697698fd-3fa0-480f-807b-68492bd292bf >>>> auth(key=AQAy7Bdg0jQsBhAAj0gcteTEbcpwNNvMGZqTTg==) >>>> /usr/bin/podman:stderr Running command: /usr/bin/chown -R ceph:ceph >>>> /var/lib/ceph/osd/ceph-0/lockbox.keyring >>>> /usr/bin/podman:stderr Running command: /usr/bin/ceph --cluster >>>> ceph --name client.osd-lockbox.697698fd-3fa0-480f-807b-68492bd292bf >>>> --keyring /var/lib/ceph/osd/ceph-0/lockbox.keyring config-key get >>>> dm-crypt/osd/697698fd-3fa0-480f-807b-68492bd292bf/luks >>>> /usr/bin/podman:stderr stderr: Error initializing cluster client: >>>> ObjectNotFound('RADOS object not found (error calling >>>> conf_read_file)',) >>>> /usr/bin/podman:stderr --> RuntimeError: Unable to retrieve >>>> dmcrypt secret >>>> Traceback (most recent call last): >>>> File "/usr/sbin/cephadm", line 6111, in <module> >>>> r = args.func() >>>> File "/usr/sbin/cephadm", line 1322, in _infer_fsid >>>> return func() >>>> File "/usr/sbin/cephadm", line 1381, in _infer_image >>>> return func() >>>> File "/usr/sbin/cephadm", line 3611, in command_ceph_volume >>>> out, err, code = call_throws(c.run_cmd(), verbose=True) >>>> File "/usr/sbin/cephadm", line 1060, in call_throws >>>> raise RuntimeError('Failed command: %s' % ' '.join(command)) >>>> RuntimeError: Failed command: /usr/bin/podman run --rm --ipc=host >>>> --net=host --entrypoint /usr/sbin/ceph-volume --privileged >>>> --group-add=disk -e CONTAINER_IMAGE=docker.io/ceph/ceph:v15 -e >>>> NODE_NAME=osd2803.banette.os -v /dev:/dev -v /run/udev:/run/udev -v >>>> /sys:/sys -v /run/lvm:/run/lvm -v /run/lock/lvm:/run/lock/lvm >>>> docker.io/ceph/ceph:v15 lvm activate --all >>> >>> The OSDs are encrypted indeed. `cephadm ceph-volume lvm list` and >>> `cephadm shell ceph -s` run just fine, and if I run ceph-volume >>> directly, the same command works, but then of course the daemons are >>> started in the legacy way again, not in containers. >>> >>> Is there another way trough the 'ceph orch' to achieve this? Or if >>> `cephadm ceph-volume -- lvm activate --all` would be the way to go >>> here, I'm probably seeing a bug here ? >>> >>> Thanks!! >>> >>> Kenneth >>> >>> >>> >>> _______________________________________________ >>> 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 _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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