Hi all,
I’m new to ceph. I recently deployed a ceph cluster with cephadm. Now I want to add a
single new OSD daemon with a db device on SSD. But I can’t find any documentation about
this.
I have tried:
1. Using web dashboard. This requires at least one filter to proceed (type, vendor,
model or size). But I just want to select the block device manually.
2. Using ‘ceph orch apply osd -i spec.yml’. This is also filter based.
3. Using ‘ceph orch daemon add osd host:device’. Seems I cannot specify my SSD db
device in this way.
4. On the target host, run ‘cephadm shell’ then ceph-volume prepare and activate. But
ceph-volume seems can’t create systemd service outside the container like ‘ceph orch’
does.
5. On the target host, run ‘cephadm ceph-volume’, but it requires a json config file, I
can’t figure out what is that.
Any help is appreciated. Thanks.