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120 lines
3.4 KiB
ReStructuredText
120 lines
3.4 KiB
ReStructuredText
=====================
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Ceph FS Quick Start
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=====================
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To use the :term:`Ceph FS` Quick Start guide, you must have executed the
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procedures in the `Storage Cluster Quick Start`_ guide first. Execute this quick
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start on the Admin Host.
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Prerequisites
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=============
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#. Verify that you have an appropriate version of the Linux kernel.
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See `OS Recommendations`_ for details. ::
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lsb_release -a
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uname -r
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#. On the admin node, use ``ceph-deploy`` to install Ceph on your
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``ceph-client`` node. ::
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ceph-deploy install ceph-client
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#. Ensure that the :term:`Ceph Storage Cluster` is running and in an ``active +
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clean`` state. Also, ensure that you have at least one :term:`Ceph Metadata
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Server` running. ::
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ceph -s [-m {monitor-ip-address}] [-k {path/to/ceph.client.admin.keyring}]
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Create a Filesystem
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===================
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You have already created an MDS (`Storage Cluster Quick Start`_) but it will not
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become active until you create some pools and a filesystem. See :doc:`/cephfs/createfs`.
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::
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ceph osd pool create cephfs_data <pg_num>
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ceph osd pool create cephfs_metadata <pg_num>
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ceph fs new <fs_name> cephfs_metadata cephfs_data
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Create a Secret File
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====================
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The Ceph Storage Cluster runs with authentication turned on by default.
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You should have a file containing the secret key (i.e., not the keyring
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itself). To obtain the secret key for a particular user, perform the
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following procedure:
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#. Identify a key for a user within a keyring file. For example::
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cat ceph.client.admin.keyring
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#. Copy the key of the user who will be using the mounted Ceph FS filesystem.
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It should look something like this::
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[client.admin]
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key = AQCj2YpRiAe6CxAA7/ETt7Hcl9IyxyYciVs47w==
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#. Open a text editor.
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#. Paste the key into an empty file. It should look something like this::
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AQCj2YpRiAe6CxAA7/ETt7Hcl9IyxyYciVs47w==
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#. Save the file with the user ``name`` as an attribute
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(e.g., ``admin.secret``).
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#. Ensure the file permissions are appropriate for the user, but not
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visible to other users.
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Kernel Driver
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=============
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Mount Ceph FS as a kernel driver. ::
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sudo mkdir /mnt/mycephfs
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sudo mount -t ceph {ip-address-of-monitor}:6789:/ /mnt/mycephfs
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The Ceph Storage Cluster uses authentication by default. Specify a user ``name``
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and the ``secretfile`` you created in the `Create a Secret File`_ section. For
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example::
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sudo mount -t ceph 192.168.0.1:6789:/ /mnt/mycephfs -o name=admin,secretfile=admin.secret
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.. note:: Mount the Ceph FS filesystem on the admin node,
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not the server node. See `FAQ`_ for details.
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Filesystem in User Space (FUSE)
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===============================
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Mount Ceph FS as a Filesystem in User Space (FUSE). ::
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sudo mkdir ~/mycephfs
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sudo ceph-fuse -m {ip-address-of-monitor}:6789 ~/mycephfs
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The Ceph Storage Cluster uses authentication by default. Specify a keyring if it
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is not in the default location (i.e., ``/etc/ceph``)::
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sudo ceph-fuse -k ./ceph.client.admin.keyring -m 192.168.0.1:6789 ~/mycephfs
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Additional Information
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======================
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See `Ceph FS`_ for additional information. Ceph FS is not quite as stable
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as the Ceph Block Device and Ceph Object Storage. See `Troubleshooting`_
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if you encounter trouble.
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.. _Storage Cluster Quick Start: ../quick-ceph-deploy
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.. _Ceph FS: ../../cephfs/
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.. _FAQ: http://wiki.ceph.com/How_Can_I_Give_Ceph_a_Try
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.. _Troubleshooting: ../../cephfs/troubleshooting
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.. _OS Recommendations: ../os-recommendations
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