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278 lines
7.7 KiB
ReStructuredText
278 lines
7.7 KiB
ReStructuredText
============================
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Object Storage Quick Start
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============================
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To use this guide, you must have executed the procedures in the `5-minute
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Quick Start`_ guide first.
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Install Apache and FastCGI
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==========================
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The Ceph object storage gateway runs on Apache and FastCGI.
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Install them on the server machine. Use the following procedure:
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#. Install Apache and FastCGI on the server machine. ::
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sudo apt-get update && sudo apt-get install apache2 libapache2-mod-fastcgi
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#. Enable the URL rewrite modules for Apache and FastCGI. ::
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sudo a2enmod rewrite
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sudo a2enmod fastcgi
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#. Add a line for the ``ServerName`` in the ``/etc/apache2/httpd.conf`` file.
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Provide the fully qualified domain name of the server machine. ::
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ServerName {fqdn}
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#. Restart Apache so that the foregoing changes take effect. ::
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sudo service apache2 restart
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Install RADOS Gateway
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=====================
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Once you have installed and configured Apache and FastCGI, you may install
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Ceph's RADOS Gateway. ::
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sudo apt-get install radosgw
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For details on the preceding steps, see `RADOS Gateway Manual Install`_.
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Modify the Ceph Configuration File
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==================================
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On the server machine, perform the following steps:
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#. Open the Ceph configuration file. ::
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cd /etc/ceph
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vim ceph.conf
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#. Add the following settings to the Ceph configuration file::
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[client.radosgw.gateway]
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host = {host-name}
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keyring = /etc/ceph/keyring.radosgw.gateway
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rgw socket path = /tmp/radosgw.sock
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log file = /var/log/ceph/radosgw.log
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#. Go to the client machine and copy the configuration file from the server
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machine to ``/etc/ceph/ceph.conf`` on your client machine. ::
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sudo scp {user}@{cluster-machine}:/etc/ceph/ceph.conf /etc/ceph/ceph.conf
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.. tip:: Ensure the ``ceph.conf`` file has appropriate permissions set
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(e.g. ``chmod 644``) on your client machine.
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Create a Data Directory
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=======================
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Create a data directory on the cluster server for the instance of ``radosgw``.
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::
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sudo mkdir -p /var/lib/ceph/radosgw/ceph-radosgw.gateway
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Create a Gateway Configuration File
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===================================
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The example configuration file will configure the gateway to operate with the
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Apache FastCGI module, a rewrite rule for OpenStack Swift, and paths for the log
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files. To add a configuration file for the Ceph Gateway, we suggest copying the
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contents of the example file below to an editor. Then, follow the steps below to
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modify it.
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.. literalinclude:: rgw.conf
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:language: ini
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#. Replace the ``{fqdn}`` entry with the fully-qualified domain name of the
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server server.
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#. Replace the ``{email.address}`` entry with the email address for the
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server administrator.
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#. Save the contents to the ``/etc/apache2/sites-available`` directory on
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the server machine.
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#. Enable the site for ``rgw.conf``. ::
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sudo a2ensite rgw.conf
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#. Disable the default site. ::
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sudo a2dissite default
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See `Create rgw.conf`_ for additional details.
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Add a FastCGI Script
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====================
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FastCGI requires a script for the S3-compatible interface. To create the
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script, execute the following procedures on the server machine.
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#. Go to the ``/var/www`` directory. ::
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cd /var/www
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#. Open an editor with the file name ``s3gw.fcgi``. ::
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sudo vim s3gw.fcgi
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#. Copy the following into the editor. ::
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#!/bin/sh
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exec /usr/bin/radosgw -c /etc/ceph/ceph.conf -n client.radosgw.gateway
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#. Save the file.
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#. Change the permissions on the file so that it is executable. ::
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sudo chmod +x s3gw.fcgi
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Generate a Keyring and Key
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==========================
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Perform the following steps on the server machine.
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#. Create a keyring for the RADOS Gateway. ::
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sudo ceph-authtool --create-keyring /etc/ceph/keyring.radosgw.gateway
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sudo chmod +r /etc/ceph/keyring.radosgw.gateway
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#. Create a key for the RADOS Gateway to authenticate with the cluster. ::
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sudo ceph-authtool /etc/ceph/keyring.radosgw.gateway -n client.radosgw.gateway --gen-key
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sudo ceph-authtool -n client.radosgw.gateway --cap osd 'allow rwx' --cap mon 'allow r' /etc/ceph/keyring.radosgw.gateway
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#. Add the key to the Ceph keyring. ::
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sudo ceph -k /etc/ceph/ceph.keyring auth add client.radosgw.gateway -i /etc/ceph/keyring.radosgw.gateway
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Create a User
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=============
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To use the Gateway, you must create a Gateway user. First, create a gateway user
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for the S3-compatible interface; then, create a subuser for the
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Swift-compatible interface.
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Gateway (S3) User
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-----------------
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First, create a Gateway user for the S3-compatible interface. ::
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sudo radosgw-admin user create --uid="{username}" --display-name="{Display Name}"
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For example::
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radosgw-admin user create --uid=johndoe --display-name="John Doe" --email=john@example.com
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.. code-block:: javascript
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{ "user_id": "johndoe",
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"rados_uid": 0,
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"display_name": "John Doe",
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"email": "john@example.com",
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"suspended": 0,
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"subusers": [],
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"keys": [
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{ "user": "johndoe",
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"access_key": "QFAMEDSJP5DEKJO0DDXY",
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"secret_key": "iaSFLDVvDdQt6lkNzHyW4fPLZugBAI1g17LO0+87"}],
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"swift_keys": []
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}
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Creating a user creates an access_key and secret_key entry for use with any S3
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API-compatible client.
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.. important:: Check the key output. Sometimes radosgw-admin generates a key
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with an escape (\) character, and some clients do not know how to handle
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escape characters. Remedies include removing the escape character (\),
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encapsulating the string in quotes, or simply regenerating the key and
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ensuring that it does not have an escape character.
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Subuser
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-------
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Next, create a subuser for the Swift-compatible interface. ::
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sudo radosgw-admin subuser create --uid=johndoe --subuser=johndoe:swift --access=full
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.. code-block:: javascript
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{ "user_id": "johndoe",
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"rados_uid": 0,
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"display_name": "John Doe",
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"email": "john@example.com",
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"suspended": 0,
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"subusers": [
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{ "id": "johndoe:swift",
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"permissions": "full-control"}],
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"keys": [
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{ "user": "johndoe",
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"access_key": "QFAMEDSJP5DEKJO0DDXY",
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"secret_key": "iaSFLDVvDdQt6lkNzHyW4fPLZugBAI1g17LO0+87"}],
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"swift_keys": []}
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::
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sudo radosgw-admin key create --subuser=johndoe:swift --key-type=swift
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.. code-block:: javascript
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{ "user_id": "johndoe",
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"rados_uid": 0,
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"display_name": "John Doe",
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"email": "john@example.com",
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"suspended": 0,
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"subusers": [
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{ "id": "johndoe:swift",
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"permissions": "full-control"}],
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"keys": [
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{ "user": "johndoe",
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"access_key": "QFAMEDSJP5DEKJO0DDXY",
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"secret_key": "iaSFLDVvDdQt6lkNzHyW4fPLZugBAI1g17LO0+87"}],
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"swift_keys": [
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{ "user": "johndoe:swift",
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"secret_key": "E9T2rUZNu2gxUjcwUBO8n\/Ev4KX6\/GprEuH4qhu1"}]}
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This step enables you to use any Swift client to connect to and use RADOS
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Gateway via the Swift-compatible API.
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RGW's ``user:subuser`` tuple maps to the ``tenant:user`` tuple expected by Swift.
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.. note:: RGW's Swift authentication service only supports
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built-in Swift authentication (``-V 1.0``) at this point. See
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`RGW Configuration`_ for Keystone integration details.
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Enable SSL
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==========
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Some REST clients use HTTPS by default. So you should consider enabling SSL
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for Apache on the server machine. ::
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sudo a2enmod ssl
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Once you enable SSL, you should generate an SSL certificate. ::
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sudo mkdir /etc/apache2/ssl
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sudo openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/apache2/ssl/apache.key -out /etc/apache2/ssl/apache.crt
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Then, restart Apache. ::
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service apache2 restart
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.. _Create rgw.conf: ../../radosgw/config/index.html#create-rgw-conf
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.. _5-minute Quick Start: ../quick-start
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.. _RADOS Gateway Manual Install: ../../radosgw/manual-install
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.. _RGW Configuration: ../../radosgw/config |