mirror of
https://github.com/ceph/ceph
synced 2024-12-30 07:23:11 +00:00
a846294533
Fix names of cephx signature keys. Signed-off-by: Danny Al-Gaaf <danny.al-gaaf@bisect.de>
230 lines
7.3 KiB
ReStructuredText
230 lines
7.3 KiB
ReStructuredText
========================
|
|
Cephx Config Reference
|
|
========================
|
|
|
|
.. index:: cephx; authentication; cephx configuration
|
|
|
|
To identify users and protect against man-in-the-middle attacks, Ceph provides
|
|
its ``cephx`` authentication system to authenticate users and daemons. See `Ceph
|
|
Authentication & Authorization`_ for an introduction to ``cephx``
|
|
authentication. See the `Cephx Guide`_ for details on enabling/disabling,
|
|
creating users and setting user capabilities.
|
|
|
|
|
|
Enable/Disable Authentication
|
|
=============================
|
|
|
|
Depending on the version, Ceph either enables or disables authentication by
|
|
default. Use the following settings to expressly enable or disable Ceph.
|
|
See `Ceph Authentication`_ for additional details.
|
|
|
|
|
|
.. topic:: Authentication Enablement Defaults
|
|
|
|
Ceph version 0.54 and earlier versions disable authentication by default.
|
|
If you want to use Ceph authentication, you must specifically enable it
|
|
for version 0.54 and earlier versions.
|
|
|
|
Ceph version 0.55 and later version enable authentication by default. If you
|
|
do not want to use Ceph authentication, you must specifically disable it
|
|
for versions 0.55 and later versions.
|
|
|
|
|
|
.. topic:: Authentication Granularity
|
|
|
|
Ceph version 0.50 and earlier versions use ``auth supported`` to enable or
|
|
disable authentication between the :term:`Ceph Client` and the :term:`Ceph
|
|
Storage Cluster`. Ceph authentication in earlier versions only authenticates
|
|
users sending message traffic between the client and the cluster, so it does
|
|
not have fine-grained control.
|
|
|
|
Ceph version 0.51 and later versions use fine-grained control, which allows
|
|
you to require authentication of the client by the cluster
|
|
(``auth service required``), authentication of the cluster by the client
|
|
(``auth client required``), and authentication of a daemon within the
|
|
cluster by another daemon within the cluster (``auth cluster required``).
|
|
|
|
|
|
|
|
``auth supported``
|
|
|
|
.. deprecated:: 0.51
|
|
|
|
:Description: Indicates whether to use authentication. If not specified,
|
|
it defaults to ``none``, which means it is disabled.
|
|
|
|
:Type: String
|
|
:Required: No
|
|
:Default: ``none``
|
|
|
|
|
|
``auth cluster required``
|
|
|
|
.. versionadded:: 0.51
|
|
|
|
:Description: If enabled, the Ceph Storage Cluster daemons (i.e., ``ceph-mon``,
|
|
``ceph-osd``, and ``ceph-mds``) must authenticate with
|
|
each other. Valid settings are ``cephx`` or ``none``.
|
|
|
|
:Type: String
|
|
:Required: No
|
|
:Default: Version 0.54 and earlier ``none``. Version 0.55 and later ``cephx``.
|
|
|
|
|
|
``auth service required``
|
|
|
|
.. versionadded:: 0.51
|
|
|
|
:Description: If enabled, the Ceph Storage Cluster daemons require Ceph Clients
|
|
to authenticate with the Ceph Storage Cluster in order to access
|
|
Ceph services. Valid settings are ``cephx`` or ``none``.
|
|
|
|
:Type: String
|
|
:Required: No
|
|
:Default: Version 0.54 and earlier ``none``. Version 0.55 and later ``cephx``.
|
|
|
|
|
|
|
|
``auth client required``
|
|
|
|
.. versionadded:: 0.51
|
|
|
|
:Description: If enabled, the Ceph Client requires the Ceph Storage Cluster to
|
|
authenticate with the Ceph Client. Valid settings are ``cephx``
|
|
or ``none``.
|
|
|
|
:Type: String
|
|
:Required: No
|
|
:Default: Version 0.54 and earlier ``none``. Version 0.55 and later ``cephx``.
|
|
|
|
|
|
.. index:: keys; keyring
|
|
|
|
Keys
|
|
====
|
|
|
|
When you run Ceph with authentication enabled, ``ceph`` administrative commands
|
|
and Ceph Clients require authentication keys to access the Ceph Storage Cluster.
|
|
|
|
The most common way to provide these keys to the ``ceph`` administrative
|
|
commands and clients is to include a Ceph keyring under the ``/etc/ceph``
|
|
directory. For Cuttlefish and later releases using ``ceph-deploy``, the filename
|
|
is usually ``ceph.client.admin.keyring`` (or ``$cluster.client.admin.keyring``).
|
|
If you include the keyring under the ``/etc/ceph`` directory, you don't need to
|
|
specify a ``keyring`` entry in your Ceph configuration file.
|
|
|
|
We recommend copying the Ceph Storage Cluster's keyring file to nodes where you
|
|
will run administrative commands, because it contains the ``client.admin`` key.
|
|
|
|
You may use ``ceph-deploy admin`` to perform this task. See `Create an Admin
|
|
Host`_ for details. To perform this step manually, execute the following::
|
|
|
|
sudo scp {user}@{ceph-cluster-host}:/etc/ceph/ceph.client.admin.keyring /etc/ceph/ceph.client.admin.keyring
|
|
|
|
.. tip:: Ensure the ``ceph.keyring`` file has appropriate permissions set
|
|
(e.g., ``chmod 644``) on your client machine.
|
|
|
|
You may specify the key itself in the Ceph configuration file using the ``key``
|
|
setting (not recommended), or a path to a keyfile using the ``keyfile`` setting.
|
|
|
|
|
|
``keyring``
|
|
|
|
:Description: The path to the keyring file.
|
|
:Type: String
|
|
:Required: No
|
|
:Default: ``/etc/ceph/$cluster.$name.keyring,/etc/ceph/$cluster.keyring,/etc/ceph/keyring,/etc/ceph/keyring.bin``
|
|
|
|
|
|
``keyfile``
|
|
|
|
:Description: The path to a key file (i.e,. a file containing only the key).
|
|
:Type: String
|
|
:Required: No
|
|
:Default: None
|
|
|
|
|
|
``key``
|
|
|
|
:Description: The key (i.e., the text string of the key itself). Not recommended.
|
|
:Type: String
|
|
:Required: No
|
|
:Default: None
|
|
|
|
|
|
.. index:: signatures
|
|
|
|
Signatures
|
|
==========
|
|
|
|
In Ceph Bobtail and subsequent versions, we prefer that Ceph authenticate all
|
|
ongoing messages between the entities using the session key set up for that
|
|
initial authentication. However, Argonaut and earlier Ceph daemons do not know
|
|
how to perform ongoing message authentication. To maintain backward
|
|
compatibility (e.g., running both Botbail and Argonaut daemons in the same
|
|
cluster), message signing is **off** by default. If you are running Bobtail or
|
|
later daemons exclusively, configure Ceph to require signatures.
|
|
|
|
Like other parts of Ceph authentication, Ceph provides fine-grained control so
|
|
you can enable/disable signatures for service messages between the client and
|
|
Ceph, and you can enable/disable signatures for messages between Ceph daemons.
|
|
|
|
|
|
``cephx require signatures``
|
|
|
|
:Description: If set to ``true``, Ceph requires signatures on all message
|
|
traffic between the Ceph Client and the Ceph Storage Cluster, and
|
|
between daemons comprising the Ceph Storage Cluster.
|
|
|
|
:Type: Boolean
|
|
:Required: No
|
|
:Default: ``false``
|
|
|
|
|
|
``cephx cluster require signatures``
|
|
|
|
:Description: If set to ``true``, Ceph requires signatures on all message
|
|
traffic between Ceph daemons comprising the Ceph Storage Cluster.
|
|
|
|
:Type: Boolean
|
|
:Required: No
|
|
:Default: ``false``
|
|
|
|
|
|
``cephx service require signatures``
|
|
|
|
:Description: If set to ``true``, Ceph requires signatures on all message
|
|
traffic between Ceph Clients and the Ceph Storage Cluster.
|
|
|
|
:Type: Boolean
|
|
:Required: No
|
|
:Default: ``false``
|
|
|
|
|
|
``cephx sign messages``
|
|
|
|
:Description: If the Ceph version supports message signing, Ceph will sign
|
|
all messages so they cannot be spoofed.
|
|
|
|
:Type: Boolean
|
|
:Default: ``true``
|
|
|
|
|
|
Time to Live
|
|
============
|
|
|
|
``auth service ticket ttl``
|
|
|
|
:Description: When the Ceph Storage Cluster sends a Ceph Client a ticket for
|
|
authentication, the Ceph Storage Cluster assigns the ticket a
|
|
time to live.
|
|
|
|
:Type: Double
|
|
:Default: ``60*60``
|
|
|
|
|
|
.. _Ceph Authentication & Authorization: ../../operations/auth-intro
|
|
.. _Cephx Guide: ../../operations/authentication
|
|
.. _Ceph Authentication: ../../operations/auth-intro#ceph-authentication-cephx
|
|
.. _Create an Admin Host: ../../deployment/ceph-deploy-admin#create-an-admin-host
|