host name ip address OS version role controller.park.com x.x.100.110 Centos7.3 controller node compute.park.com x.x.100.111 Centos7.3 compute node network.park.com x.x.100.112 Centos7.3 ceph3 node( /dev/sdd 10G) ceph1.park.com x.x.100.113 Centos7.3 ceph1 node( /dev/sdb 10G) ceph2.park.com x.x.100.114 Centos7.3 ceph2 node( /dev/sdb 10G) ceph cluster를 위한 사전 설치 작업 ######### controller. compute,netw..