nf ceph mds
The nf ceph mds command creates a Ceph Metadata Server on a node.
MDS is required for CephFS. It manages the filesystem namespace — directory hierarchy, file metadata, and POSIX permissions — while file data is stored on OSDs. For high-availability CephFS, deploy at least two MDS daemons: one active and one standby.
Usage
$ nf ceph mds --node <node-id>
Options
nf ceph mds
nf ceph mdsCreate a Ceph Metadata Server on a node.
| Flag | Description |
|---|---|
--node | Node ID (UUID) (required) |
Terminals
$ nf ceph mds --node 550e8400-e29b-41d4-a716-446655440000 Ceph MDS creation triggered.