Preparation PREFLIGHT CHECKLIST http://docs.ceph.com/docs/master/start/quick-start-preflight/ I confirmed this url. I use these nodes. node role ip ceph01 mon.node1/osd.0 172.16.10.111/24 ceph02 osd.1 172.16.10.112/24 ceph03 osd.2 172.16.1…