mirror of https://github.com/ceph/ceph
82 lines
2.5 KiB
ReStructuredText
82 lines
2.5 KiB
ReStructuredText
==========================
|
||
Block Device Quick Start
|
||
==========================
|
||
|
||
To use this guide, you must have executed the procedures in the `Storage
|
||
Cluster Quick Start`_ guide first. Ensure your :term:`Ceph Storage Cluster` is
|
||
in an ``active + clean`` state before working with the :term:`Ceph Block
|
||
Device`.
|
||
|
||
.. note:: The Ceph Block Device is also known as :term:`RBD` or :term:`RADOS`
|
||
Block Device.
|
||
|
||
|
||
.. ditaa::
|
||
/------------------\ /----------------\
|
||
| Admin Node | | ceph–client |
|
||
| +-------->+ cCCC |
|
||
| ceph–deploy | | ceph |
|
||
\------------------/ \----------------/
|
||
|
||
|
||
You may use a virtual machine for your ``ceph-client`` node, but do not
|
||
execute the following procedures on the same physical node as your Ceph
|
||
Storage Cluster nodes (unless you use a VM). See `FAQ`_ for details.
|
||
|
||
|
||
Install Ceph
|
||
============
|
||
|
||
#. Verify that you have an appropriate version of the Linux kernel.
|
||
See `OS Recommendations`_ for details. ::
|
||
|
||
lsb_release -a
|
||
uname -r
|
||
|
||
#. On the admin node, use ``ceph-deploy`` to install Ceph on your
|
||
``ceph-client`` node. ::
|
||
|
||
ceph-deploy install ceph-client
|
||
|
||
#. On the admin node, use ``ceph-deploy`` to copy the Ceph configuration file
|
||
and the ``ceph.client.admin.keyring`` to the ``ceph-client``. ::
|
||
|
||
ceph-deploy admin ceph-client
|
||
|
||
The ``ceph-deploy`` utility copies the keyring to the ``/etc/ceph``
|
||
directory. Ensure that the keyring file has appropriate read permissions
|
||
(e.g., ``sudo chmod +r /etc/ceph/ceph.client.admin.keyring``).
|
||
|
||
|
||
Configure a Block Device
|
||
========================
|
||
|
||
#. On the ``ceph-client`` node, create a block device image. ::
|
||
|
||
rbd create foo --size 4096 [-m {mon-IP}] [-k /path/to/ceph.client.admin.keyring]
|
||
|
||
#. On the ``ceph-client`` node, map the image to a block device. ::
|
||
|
||
sudo rbd map foo --name client.admin [-m {mon-IP}] [-k /path/to/ceph.client.admin.keyring]
|
||
|
||
#. Use the block device by creating a file system on the ``ceph-client``
|
||
node. ::
|
||
|
||
sudo mkfs.ext4 -m0 /dev/rbd/rbd/foo
|
||
|
||
This may take a few moments.
|
||
|
||
#. Mount the file system on the ``ceph-client`` node. ::
|
||
|
||
sudo mkdir /mnt/ceph-block-device
|
||
sudo mount /dev/rbd/rbd/foo /mnt/ceph-block-device
|
||
cd /mnt/ceph-block-device
|
||
|
||
|
||
See `block devices`_ for additional details.
|
||
|
||
.. _Storage Cluster Quick Start: ../quick-ceph-deploy
|
||
.. _block devices: ../../rbd/rbd
|
||
.. _FAQ: http://wiki.ceph.com/FAQs/How_Can_I_Give_Ceph_a_Try%3F
|
||
.. _OS Recommendations: ../os-recommendations
|