cinder的multibackend的配置

本实验以配置cinder两个后端存储为例，两后端为LVM和NFS不同的存储类型，LVMVolumeProvider放在cinder-volume服务所在节点，NFSVolumeProvider是独立的存放volume的节点，以区分存储节点（cinder-volume服务所在的节点）不一定就是生成volume的节点，cinder-volume节点就是实际存储池的一顶帽子。（具体的LVM和NFS服务器如何搭建，就不再详细说了，主要就是了解一下多后端的详细流程）

控制节点配置文件/etc/cinder/cinder.conf

[DEFAULT]

my_ip = 192.168.232.10

auth_strategy = keystone

debug = true

verbose = true

rpc_backend = rabbit

[database]

connection = mysql://cinder:CINDER_DBPASS@controller/cinder

[keystone_authtoken]

auth_uri = http://controller:5000/v2.0

identity_uri = http://controller:35357

admin_user = cinder

admin_password = CINDER_PASS

admin_tenant_name = service

[oslo_messaging_rabbit]

rabbit_host = 192.168.232.10

rabbit_password = RABBIT_PASS

存储节点配置文件/etc/cinder/cinder.conf

[DEFAULT]

my_ip = 192.168.232.14

glance_host = 192.168.232.10

auth_strategy = keystone

iscsi_helper = tgtadm

debug = true

verbose = true

rpc_backend = rabbit

enabled_backends = lvmdriver-1,nfs

[lvmdriver-1]

lvm_type = default

volume_group = cinder-volumes  //在LVMVolumeProvider用vgdisplay查看

volume_driver = cinder.volume.drivers.lvm.LVMVolumeDriver

volume_backend_name = lvmdriver-1

[nfs]

nfs_mount_point_base = /nfs_storage  //存储节点上创建此目录，是远程nfs目录的挂载点，注意该目录的权限和属主

nfs_shares_config = /etc/cinder/nfs_shares  //该文件自行创建，内容是192.168.232.16:/storage，注意该文件权限和属主

volume_driver = cinder.volume.drivers.nfs.NfsDriver//driver的目录在/usr/lib/python2.7/site-packages/cinder/volume/driver/

volume_backend_name = nfs  //设置卷类型，并把卷类型与volume_backend_name绑定，scheduler会根据卷类型过滤出符合条件的backend

                                             //cinder type-create nfs
                                             //cinder type-key nfs set volume_backend_name=nfs

[database]

connection = mysql://cinder:CINDER_DBPASS@controller/cinder

[keystone_authtoken]

auth_uri = http://controller:5000/v2.0

identity_uri = http://controller:35357

admin_user = cinder

admin_password = CINDER_PASS

admin_tenant_name = service

[oslo_messaging_rabbit]

rabbit_host = 192.168.232.10

rabbit_password = RABBIT_PASS