Hello,
I am trying to configure ceph-ansible (stable-4.0) to deploy a new cluster in Nautilus.
What would be the best OSDs scenario config in this case :
10x 6TB Disk OSDs (data)
2x 480G SSD previously used for journal and can be used for WAL and/or DB
https://github.com/ceph/ceph-ansible/blob/master/docs/source/osds/scenarios…
is this good :
osd_objectstore: bluestore
lvm_volumes:
- data: data-lv1
data_vg: data-vg1
db: db-lv1
db_vg: db-vg1
wal: wal-lv1
wal_vg: wal-vg1
- data: data-lv2
data_vg: data-vg2
db: db-lv2
db_vg: db-vg2
wal: wal-lv2
wal_vg: wal-vg2
Is it better to put all WAL on one SSD and all DBs on the other one? Or put WAL and DB of the first 5 OSD on the first SSD and the 5 others on
the second one.
Is it possible to let the playbook configure LVM for each disk in a mixed case? It looks like I must configure LVM before running the playbook
but I am not sure if I missed something.
Is wal_vg and db_vg can be identical (on VG per SSD shared with multiple OSDs)?
Thanks for your help.
Best regards,
--
Yoann Moulin
EPFL IC-IT
