CentOS 6.5下配置Ceph作为KVM后端存储

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配置环境

Centos 6.5 X86_64

Ceph 0.80.7

Qemu-kvm 0.12.1.2

配置步骤

ceph的安装步骤不在这里说明，网上有太多，这里仅介绍如何配置ceph作为kvm的后端存储使用。

qemu安装

#git clone git://git.qemu-project.org/qemu.git#cd qemu#./configure –enable-rbd –enable-glusterfs#make#make install

qemu-kvm安装

在http://ceph.com/packages/ceph-extras/rpm/centos6.4/x86_64/下载带有rbd driver的qemu-kvm软件包

qemu-img-0.12.1.2-2.415.el6.3ceph.x86_64.rpm

qemu-kvm-0.12.1.2-2.415.el6.3ceph.x86_64.rpm

qemu-kvm-debuginfo-0.12.1.2-2.415.el6.3ceph.x86_64.rpm

qemu-kvm-tools-0.12.1.2-2.415.el6.3ceph.x86_64.rpm

#rpm -ivh qemu*.rpm

配置ceph

编写密钥文件secret.xml

<secret ephemeral='no' private='no'>   <usage type='ceph'>     <name>client.admin secret</name>   </usage></secret>

生成密钥

virsh secret-define --file secret.xml

将密钥文件与ceph密钥文件进行匹配

virsh secret-set-value  76e3a541-b997-58ac-f7bd-77dd7d4347cb AQAREH1QkNDNCBaac03ZICi/CePnRDS+vGyrqQ==

创建rbd用于kvm使用

#rbd create rbd-vol1 --size 20480

创建VM

编写xml文件如下

<domain type='kvm'>    <name>ceph-linux</name>    <os>    <type arch='x86_64' machine='pc'>hvm</type>    <boot dev='hd'/>   </os>    <features>        <acpi/>    </features>    <memory>4096000</memory>    <vcpu>4</vcpu>    <devices>        <emulator>/usr/libexec/qemu-kvm</emulator><disk type='network' device='disk'>   <driver name='qemu' type='raw' cache='none'/>   <auth username='admin'>        <secret type='ceph' uuid='7f1eec3f-48b7-3bdf-e9c5-7c7b70405277' />   </auth>   <source protocol='rbd' name='rbd/rbd-vol1'>        <host name='10.10.200.61' port='6789'/>        <host name='10.10.200.62' port='6789'/>    </source>   <target dev='vda' bus='virtio'/>   <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/></disk><disk type='file' device='cdrom'>            <source file='/var/lib/libvirt/images/CentOS-6.0-x86_64-bin-DVD1.iso'/>            <target dev='hdc'/>            <readonly/>        </disk>        <interface type='bridge'>            <source bridge='br0'/>            <model type='rtl8139'/>        </interface>        <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'/>    </devices></domain>

启动VM

#virsh create ceph-centos.xml

通过以上操作就完成了配置ceph作为kvm的后端存储使用

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