mirror of
https://github.com/ceph/ceph
synced 2024-12-23 03:44:23 +00:00
107 lines
3.3 KiB
ReStructuredText
107 lines
3.3 KiB
ReStructuredText
=============================
|
|
Deploying with ``mkcephfs``
|
|
=============================
|
|
|
|
Enable Login to Cluster Hosts as ``root``
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
To deploy with ``mkcephfs``, you will need to be able to login as ``root``
|
|
on each host without a password. For each host, perform the following::
|
|
|
|
sudo passwd root
|
|
|
|
Enter a password for the root user.
|
|
|
|
On the admin host, generate an ``ssh`` key without specifying a passphrase
|
|
and use the default locations. ::
|
|
|
|
ssh-keygen
|
|
Generating public/private key pair.
|
|
Enter file in which to save the key (/ceph-admin/.ssh/id_rsa):
|
|
Enter passphrase (empty for no passphrase):
|
|
Enter same passphrase again:
|
|
Your identification has been saved in /ceph-admin/.ssh/id_rsa.
|
|
Your public key has been saved in /ceph-admin/.ssh/id_rsa.pub.
|
|
|
|
You may use RSA or DSA keys. Once you generate your keys, copy them to each
|
|
OSD host. For example::
|
|
|
|
ssh-copy-id root@myserver01
|
|
ssh-copy-id root@myserver02
|
|
|
|
Modify your ``~/.ssh/config`` file to login as ``root``, as follows::
|
|
|
|
Host myserver01
|
|
Hostname myserver01.fully-qualified-domain.com
|
|
User root
|
|
Host myserver02
|
|
Hostname myserver02.fully-qualified-domain.com
|
|
User root
|
|
|
|
Copy Configuration File to All Hosts
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
Ceph's ``mkcephfs`` deployment script does not copy the configuration file you
|
|
created from the Administration host to the OSD Cluster hosts. Copy the
|
|
configuration file you created (*i.e.,* ``mycluster.conf`` in the example below)
|
|
from the Administration host to ``etc/ceph/ceph.conf`` on each OSD Cluster host
|
|
if you are using ``mkcephfs`` to deploy Ceph.
|
|
|
|
::
|
|
|
|
cd /etc/ceph
|
|
ssh myserver01 sudo tee /etc/ceph/ceph.conf <ceph.conf
|
|
ssh myserver02 sudo tee /etc/ceph/ceph.conf <ceph.conf
|
|
ssh myserver03 sudo tee /etc/ceph/ceph.conf <ceph.conf
|
|
|
|
|
|
Create the Default Directories
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
The ``mkcephfs`` deployment script does not create the default server directories.
|
|
Create server directories for each instance of a Ceph daemon. The ``host``
|
|
variables in the ``ceph.conf`` file determine which host runs each instance of
|
|
a Ceph daemon. Using the exemplary ``ceph.conf`` file, you would perform
|
|
the following:
|
|
|
|
On ``myserver01``::
|
|
|
|
sudo mkdir /srv/osd.0
|
|
sudo mkdir /srv/mon.a
|
|
|
|
On ``myserver02``::
|
|
|
|
sudo mkdir /srv/osd.1
|
|
sudo mkdir /srv/mon.b
|
|
|
|
On ``myserver03``::
|
|
|
|
sudo mkdir /srv/osd.2
|
|
sudo mkdir /srv/mon.c
|
|
sudo mkdir /srv/mds.a
|
|
|
|
Run ``mkcephfs``
|
|
~~~~~~~~~~~~~~~~
|
|
Once you have copied your Ceph Configuration to the OSD Cluster hosts
|
|
and created the default directories, you may deploy Ceph with the
|
|
``mkcephfs`` script.
|
|
|
|
.. note:: ``mkcephfs`` is a quick bootstrapping tool. It does not handle more
|
|
complex operations, such as upgrades.
|
|
|
|
For production environments, deploy Ceph using Chef cookbooks. To run
|
|
``mkcephfs``, execute the following::
|
|
|
|
cd /etc/ceph
|
|
sudo mkcephfs -a -c /etc/ceph/ceph.conf -k ceph.keyring
|
|
|
|
The script adds an admin key to the ``ceph.keyring``, which is analogous to a
|
|
root password. See `Authentication`_ when running with ``cephx`` enabled.
|
|
|
|
When you start or stop your cluster, you will not have to use ``sudo`` or
|
|
provide passwords. For example::
|
|
|
|
service ceph -a start
|
|
|
|
See `Start | Stop the Cluster`_ for details.
|
|
|
|
|
|
.. _Authentication: ../authentication
|
|
.. _Start | Stop the Cluster: ../../init/ |