156 lines
4.5 KiB
ReStructuredText
156 lines
4.5 KiB
ReStructuredText
.. _storage-rdo:
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Install and configure the storage nodes for Red Hat Enterprise Linux and CentOS
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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This section describes how to install and configure storage nodes
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that operate the account, container, and object services. For
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simplicity, this configuration references two storage nodes, each
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containing two empty local block storage devices. The instructions
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use ``/dev/sdb`` and ``/dev/sdc``, but you can substitute different
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values for your particular nodes.
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Although Object Storage supports any file system with
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extended attributes (xattr), testing and benchmarking
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indicate the best performance and reliability on XFS. For
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more information on horizontally scaling your environment, see the
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`Deployment Guide <http://docs.openstack.org/developer/swift/deployment_guide.html>`_.
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This section applies to Red Hat Enterprise Linux 7 and CentOS 7.
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Prerequisites
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-------------
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Before you install and configure the Object Storage service on the
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storage nodes, you must prepare the storage devices.
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.. note::
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Perform these steps on each storage node.
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#. Install the supporting utility packages:
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.. code-block:: console
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# yum install xfsprogs rsync
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#. Format the ``/dev/sdb`` and ``/dev/sdc`` devices as XFS:
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.. code-block:: console
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# mkfs.xfs /dev/sdb
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# mkfs.xfs /dev/sdc
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#. Create the mount point directory structure:
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.. code-block:: console
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# mkdir -p /srv/node/sdb
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# mkdir -p /srv/node/sdc
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#. Edit the ``/etc/fstab`` file and add the following to it:
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.. code-block:: none
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/dev/sdb /srv/node/sdb xfs noatime,nodiratime,nobarrier,logbufs=8 0 2
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/dev/sdc /srv/node/sdc xfs noatime,nodiratime,nobarrier,logbufs=8 0 2
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#. Mount the devices:
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.. code-block:: console
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# mount /srv/node/sdb
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# mount /srv/node/sdc
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#. Create or edit the ``/etc/rsyncd.conf`` file to contain the following:
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.. code-block:: none
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uid = swift
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gid = swift
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log file = /var/log/rsyncd.log
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pid file = /var/run/rsyncd.pid
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address = MANAGEMENT_INTERFACE_IP_ADDRESS
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[account]
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max connections = 2
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path = /srv/node/
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read only = False
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lock file = /var/lock/account.lock
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[container]
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max connections = 2
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path = /srv/node/
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read only = False
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lock file = /var/lock/container.lock
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[object]
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max connections = 2
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path = /srv/node/
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read only = False
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lock file = /var/lock/object.lock
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Replace ``MANAGEMENT_INTERFACE_IP_ADDRESS`` with the IP address of the
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management network on the storage node.
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.. note::
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The ``rsync`` service requires no authentication, so consider running
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it on a private network in production environments.
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7. Start the ``rsyncd`` service and configure it to start when the
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system boots:
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.. code-block:: console
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# systemctl enable rsyncd.service
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# systemctl start rsyncd.service
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Install and configure components
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--------------------------------
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.. note::
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Default configuration files vary by distribution. You might need
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to add these sections and options rather than modifying existing
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sections and options. Also, an ellipsis (``...``) in the configuration
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snippets indicates potential default configuration options that you
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should retain.
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.. note::
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Perform these steps on each storage node.
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#. Install the packages:
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.. code-block:: console
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# yum install openstack-swift-account openstack-swift-container \
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openstack-swift-object
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2. Obtain the accounting, container, and object service configuration
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files from the Object Storage source repository:
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.. code-block:: console
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# curl -o /etc/swift/account-server.conf https://git.openstack.org/cgit/openstack/swift/plain/etc/account-server.conf-sample?h=stable/newton
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# curl -o /etc/swift/container-server.conf https://git.openstack.org/cgit/openstack/swift/plain/etc/container-server.conf-sample?h=stable/newton
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# curl -o /etc/swift/object-server.conf https://git.openstack.org/cgit/openstack/swift/plain/etc/object-server.conf-sample?h=stable/newton
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3. .. include:: storage-include1.txt
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4. .. include:: storage-include2.txt
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5. .. include:: storage-include3.txt
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6. Ensure proper ownership of the mount point directory structure:
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.. code-block:: console
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# chown -R swift:swift /srv/node
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7. Create the ``recon`` directory and ensure proper ownership of it:
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.. code-block:: console
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# mkdir -p /var/cache/swift
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# chown -R root:swift /var/cache/swift
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# chmod -R 775 /var/cache/swift
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