Hi,
you should be able to add the OSD manually directly on the host with:
ceph-volume lvm create --data {vg name/lv name}
Regards,
Eugen
Zitat von "Richard W.M. Jones" <rjones@xxxxxxxxxx>:
I have one spare machine with a single 1TB on it, and I'd like to test
a local Ceph install. This is just for testing, I don't care that it
won't have redundancy, failover, etc. Is there any canonical
documentation for this case?
- - -
Longer story is this morning I found this documentation through many
Google searches:
https://medium.com/@balderscape/setting-up-a-virtual-single-node-ceph-storage-cluster-d86d6a6c658e
It kind of works up to a point. I was able to get Ceph installed, get
both the command line and web interfaces up and running, and got as
far as:
# ceph status
cluster:
id: 723e09aa-dbd3-11ea-8587-94c691189836
health: HEALTH_WARN
Reduced data availability: 1 pg inactive
OSD count 0 < osd_pool_default_size 3
services:
mon: 1 daemons, quorum dev1 (age 77m)
mgr: dev1.ziibhq(active, since 76m)
osd: 0 osds: 0 up, 0 in
data:
pools: 1 pools, 1 pgs
objects: 0 objects, 0 B
usage: 0 B used, 0 B / 0 B avail
pgs: 100.000% pgs unknown
1 unknown
# ceph orch device ls
HOST PATH TYPE SIZE DEVICE
AVAIL REJECT REASONS
dev1 /dev/sdb hdd 14.9G Cruzer_Blade_4C530210050318117591 True
dev1 /dev/sda hdd 931G WDC_WD10JFCX-68N_WD-WXD1AB73AUX5
False LVM detected, locked
(The USB stick is left over from the install and isn't suitable as an OSD).
However I've been completely unable to add any OSDs using the local
disk. The disk (/dev/sda3) is a PV and there is plenty of space. I
even created some devices that I was hoping to use as OSDs:
# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move
Log Cpy%Sync Convert
osd1 rhel_dev1 -wi-a----- 100.00g
osd2 rhel_dev1 -wi-a----- 100.00g
osd3 rhel_dev1 -wi-a----- 100.00g
root rhel_dev1 -wi-ao---- 50.00g
swap rhel_dev1 -wi-ao---- <7.84g
but it simply doesn't do anything when I try to add them:
# ceph orch daemon add osd localhost:rhel_dev1/osd1
(no error, exit code 0)
So I guess the fact that the device is marked as "AVAIL = False" and
"locked" is bad somehow. Can I add the OSDs anyway?
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
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