解决方案
第一步、运行 mds 服务
for ceph-node-01
# ceph fs volume create <fs_name> --placement="<placement spec>"
# ceph fs volume create foo-fs --placement="ceph-node-01 ceph-node-02 ceph-node-03"
# ceph mds stat
foo-fs:1 {0=foo-fs.ceph-node-03.lcyldy=up:active} 2 up:standby
# ceph fs ls
name: foo-fs, metadata pool: cephfs.foo-fs.meta, data pools: [cephfs.foo-fs.data ]
第二步、创建 Keyring 文件
for ceph-node-0
# ceph auth get-or-create client.cephfs -o /etc/ceph/client.cephfs.keyring \
osd 'allow rwx pool=cephfs.foo-fs.meta,allow rwx pool=cephfs.foo-fs.data' \
mon 'allow r' \
mds 'allow r'
# cat /etc/ceph/client.cephfs.keyring
[client.cephfs]
key = AQDunnxjNd/fMxAAR0KPJ+TROGLIPGRN9sLnAw==
第三步、客户端挂载访问
# mount -t ceph -o 'name=cephfs,secretfile=/path/to/secretfile' ... mount -t ceph -o 'name=cephfs,secret=AQDunnxjNd/fMxAAR0KPJ+TROGLIPGRN9sLnAw==' 192.168.200.3:6789:/ /mnt/ceph/ // for old versions of Linux，旧版本的内核没有 ceph 模块，需要通过 fuse 来挂载 ceph-fuse --keyring /path/to/keyring --name client.cephfs -m 192.168.200.3:6789:/ /mnt/ceph/ // for Windows, use ceph-dokan // https://docs.ceph.com/en/latest/cephfs/ceph-dokan/
参考文献
MDS Service — Ceph Documentation