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https://github.com/ceph/ceph
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165 lines
4.6 KiB
ReStructuredText
165 lines
4.6 KiB
ReStructuredText
=========================================
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Install Virtualization for Block Device
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=========================================
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If you intend to use Ceph Block Devices and the Ceph Storage Cluster as a
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backend for Virtual Machines (VMs) or :term:`Cloud Platforms` the QEMU/KVM and
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``libvirt`` packages are important for enabling VMs and cloud platforms.
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Examples of VMs include: QEMU/KVM, XEN, VMWare, LXC, VirtualBox, etc. Examples
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of Cloud Platforms include OpenStack, CloudStack, OpenNebula, etc.
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.. ditaa:: +---------------------------------------------------+
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| libvirt |
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+------------------------+--------------------------+
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| configures
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v
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+---------------------------------------------------+
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| QEMU |
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+---------------------------------------------------+
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| librbd |
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+------------------------+-+------------------------+
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| OSDs | | Monitors |
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+------------------------+ +------------------------+
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Install QEMU
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============
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QEMU KVM can interact with Ceph Block Devices via ``librbd``, which is an
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important feature for using Ceph with cloud platforms. Once you install QEMU,
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see `QEMU and Block Devices`_ for usage.
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Debian Packages
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---------------
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QEMU packages are incorporated into Ubuntu 12.04 Precise Pangolin and later
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versions. To install QEMU, execute the following::
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sudo apt-get install qemu
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RPM Packages
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------------
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To install QEMU, execute the following:
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#. Install ``yum-plugin-priorities``. ::
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sudo yum install yum-plugin-priorities
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#. Ensure ``/etc/yum/pluginconf.d/priorities.conf`` exists.
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#. Ensure ``priorities.conf`` enables the plugin. ::
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[main]
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enabled = 1
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#. Create a ``/etc/yum.repos.d/ceph-extras.repo`` file with the following
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contents, and replace ``{distro}`` with your Linux distribution. Follow
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the ``baseurl`` path below to see which distributions Ceph supports::
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[ceph-extras]
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name=Ceph Extras
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baseurl=http://ceph.com/packages/ceph-extras/rpm/{distro}/$basearch
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enabled=1
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priority=2
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gpgcheck=1
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type=rpm-md
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gpgkey=https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/release.asc
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[ceph-qemu-source]
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name=Ceph Extras Sources
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baseurl=http://ceph.com/packages/ceph-extras/rpm/{distro}/SRPMS
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enabled=1
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priority=2
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gpgcheck=1
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type=rpm-md
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gpgkey=https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/release.asc
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#. Update your repositories. ::
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sudo yum update
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#. Ensure that non-priority versions are removed. ::
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sudo yum remove qemu-kvm qemu-kvm-tools qemu-img
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sudo yum clean all
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#. Install QEMU for Ceph. ::
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sudo yum install qemu-kvm qemu-kvm-tools qemu-img
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#. Install additional QEMU packages (optional)::
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sudo yum install qemu-guest-agent qemu-guest-agent-win32
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Building QEMU
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-------------
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To build QEMU from source, use the following procedure::
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cd {your-development-directory}
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git clone git://git.qemu.org/qemu.git
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cd qemu
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./configure --enable-rbd
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make; make install
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Install libvirt
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===============
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To use ``libvirt`` with Ceph, you must have a running Ceph Storage Cluster, and
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you must have installed and configured QEMU. See `Using libvirt with Ceph Block
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Device`_ for usage.
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Debian Packages
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---------------
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``libvirt`` packages are incorporated into Ubuntu 12.04 Precise Pangolin and
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later versions of Ubuntu. To install ``libvirt`` on these distributions,
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execute the following::
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sudo apt-get update && sudo apt-get install libvirt-bin
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RPM Packages
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------------
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To use ``libvirt`` with a Ceph Storage Cluster, you must have a running Ceph
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Storage Cluster and you must also install a version of QEMU with ``rbd`` format
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support. See `Install QEMU`_ for details.
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``libvirt`` packages are incorporated into the recent CentOS/RHEL distributions.
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To install ``libvirt``, execute the following::
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sudo yum install libvirt
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Building ``libvirt``
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--------------------
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To build ``libvirt`` from source, clone the ``libvirt`` repository and use
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`AutoGen`_ to generate the build. Then, execute ``make`` and ``make install`` to
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complete the installation. For example::
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git clone git://libvirt.org/libvirt.git
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cd libvirt
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./autogen.sh
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make
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sudo make install
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See `libvirt Installation`_ for details.
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.. _libvirt Installation: http://www.libvirt.org/compiling.html
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.. _AutoGen: http://www.gnu.org/software/autogen/
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.. _QEMU and Block Devices: ../../rbd/qemu-rbd
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.. _Using libvirt with Ceph Block Device: ../../rbd/libvirt |