Symptom..ceph -s로 간단한 상태 확인root@mon0:~# ceph -s cluster: id: [fsid] health: HEALTH_WARN 4 hosts fail cephadm check ceph health detail로 증상 확인root@mon0:~# ceph health detailHEALTH_WARN 4 hosts fail cephadm check[WRN] CEPHADM_HOST_CHECK_FAILED: 4 hosts fail cephadm check host osd2 ([osd2_ip]) failed check: Can't communicate with remote host `[osd2_ip]`, possibly because pyt..