systemctl stop ceph-mds.target
killall ceph-mds
ceph mds cluster_down
ceph mds fail 0
ceph fs rm cephfs name --yes-i-really-mean-it
ceph osd pool delete cephfs data pool cephfs data pool --yes-i-really-really-mean-it
ceph osd pool delete cephfs metadata pool cephfs metadata pool --yes-i-really-really-mean-it
rm -rf "/var/lib/ceph/mds/cluster-metadata server"
ceph auth del mds."$hostname"