The Ceph Filesystem (Ceph FS) is a POSIX-compliant filesystem that uses a Ceph Storage Cluster to store its data. The Ceph filesystem uses the same Ceph Storage Cluster system as Ceph Block Devices, Ceph Object Storage with its S3 and Swift APIs, or native bindings (librados).
If you are evaluating CephFS for the first time, please review the best practices for deployment: CephFS best practices
Using the Ceph Filesystem requires at least one Ceph Metadata Server in your Ceph Storage Cluster.
Step 1: Metadata Server
To run the Ceph Filesystem, you must have a running Ceph Storage Cluster with at least one Ceph Metadata Server running.
Step 2: Mount CephFS
Once you have a healthy Ceph Storage Cluster with at least one Ceph Metadata Server, you may create and mount your Ceph Filesystem. Ensure that you client has network connectivity and the proper authentication keyring.