Set Up ObjectiveFS With Ceph

This document covers the steps to set up your ObjectiveFS filesystem with Ceph.

What You Need

  1. Keys and endpoint for your S3-compatible Ceph Object Gateway
  2. ObjectiveFS license key from the Filesystem section on your profile page
  3. ObjectiveFS software installed on your machine (see Quick Start)


  1. Configure Objectivefs

    $ sudo mount.objectivefs config ceph://
    Creating config for Your Object Store Provider in /etc/objectivefs.env
    Enter ObjectiveFS license: <your ObjectiveFS license>
    Enter Endpoint URL (http[s]://[:port]): <endpoint>
    Enter Access Key: <your access key>
    Enter Secret Key: <your secret key>

  2. Create your filesystem (one-time only)

    • Choose a unique filesystem name. ObjectiveFS will create a new bucket with this name.
    • Choose a strong passphrase, write it down and store it somewhere safe.
      IMPORTANT: Without the passphrase, there is no way to recover any files.

    $ sudo mount.objectivefs create <your filesystem name>
    Passphrase (for ceph://<filesystem>): <your passphrase>
    Verify passphrase (for ceph://<filesystem>): <your passphrase>

  3. Mount your filesystem
    Mount your filesystem on an existing empty directory, e.g. /ofs. The ObjectiveFS process will run in the background.

    $ sudo mount.objectivefs -omkdir,mt <your filesystem name> /ofs
    Passphrase (for ceph://<filesystem>): <your passphrase>

  4. [Optional] Multi-server setup
    Mount this filesystem on as many servers as you wish by running steps 1 and 3 on each server after installing ObjectiveFS. Each server can read and write to the same filesystem at the same time.

If you have questions, please email us at

Last updated by ObjectiveFS staff, February 13, 2023

ObjectiveFS is a shared filesystem for Linux and macOS that automatically scales up and out with high performance. In production use by Fortune 500 companies since 2013.