Hi,
you can specify the entire tree in the location statement, if you need to:
ceph:~ # cat host-spec.yaml
service_type: host
hostname: ceph
addr: <IP>
location:
root: default
rack: rack2
and after the bootstrap it looks like expected:
ceph:~ # ceph osd tree
ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF
-1 0 root default
-3 0 rack rack2
-2 0 host ceph
This should be made a bit clearer in the docs [0], I added Zac.
Regards,
Eugen
[0]
https://docs.ceph.com/en/latest/cephadm/host-management/#setting-the-initial-crush-location-of-host
Zitat von Matthew Vernon <mver...@wikimedia.org>:
Hi,
Returning to this, it looks like the issue wasn't to do with how
osd_crush_chooseleaf_type ; I destroyed and re-created my cluster as
before, and I have the same problem again:
pg 1.0 is stuck inactive for 10m, current state unknown, last acting []
as before, ceph osd tree:
root@moss-be1001:/# ceph osd tree
ID CLASS WEIGHT TYPE NAME STATUS REWEIGHT PRI-AFF
-7 176.11194 rack F3
-6 176.11194 host moss-be1003
13 hdd 7.33800 osd.13 up 1.00000 1.00000
15 hdd 7.33800 osd.15 up 1.00000 1.00000
And checking the crushmap, the default bucket is again empty:
root default {
id -1 # do not change unnecessarily
id -14 class hdd # do not change unnecessarily
# weight 0.00000
alg straw2
hash 0 # rjenkins1
}
[by way of confirming that I didn't accidentally leave the old
config fragment lying around, the replication rule has:
step chooseleaf firstn 0 type host
]
So it looks like setting location: in my spec is breaking the
cluster bootstrap - the hosts aren't put into default, but neither
are the declared racks. As a reminder, that spec has host entries
like:
service_type: host
hostname: moss-be1003
addr: 10.64.136.22
location:
rack: F3
labels:
- _admin
- NVMe
Is this expected behaviour? Presumably I can fix the cluster by
using "ceph osd crush move F3 root=default" and similar for the
others, but is there a way to have what I want done by cephadm
bootstrap?
Thanks,
Matthew
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