GlusterFS作为OpenStack后端存储
创建3个卷images、volumes、instances分别对接openstack的glance、cinder、nova组件images卷用于存放OpenStack镜像
volumes卷用于存放OpenStack硬盘
instances卷用于存放OpenStack云主机
1、创建卷
gluster volume create images replica 3 \
controller1:/data/brick1/imagecontroller2:/data/brick1/imagecompute01:/data/brick1/image \
controller1:/data/brick2/imagecontroller2:/data/brick2/imagecompute01:/data/brick2/image \
controller1:/data/brick3/imagecontroller2:/data/brick3/imagecompute01:/data/brick3/image
gluster volume create volumes replica 3 \
controller1:/data/brick1/volumecontroller2:/data/brick1/volumecompute01:/data/brick1/volume \
controller1:/data/brick2/volumecontroller2:/data/brick2/volumecompute01:/data/brick2/volume \
controller1:/data/brick3/volumecontroller2:/data/brick3/volumecompute01:/data/brick3/volume
gluster volume create instances replica 3 \
controller1:/data/brick1/instancecontroller2:/data/brick1/instancecompute01:/data/brick1/instance \
controller1:/data/brick2/instancecontroller2:/data/brick2/instancecompute01:/data/brick2/instance \
controller1:/data/brick3/instancecontroller2:/data/brick3/instancecompute01:/data/brick3/instance
2、启动卷
gluster volume start images
gluster volume start volumes
gluster volume start instances 3、添加images、instances到fstab自动挂载
controller1:/images /var/lib/glance/images glusterfsdefaults,_netdev,backupvolfile-server=controller2,backupvolfile-server=compute01 0 0
controller1:/instances /var/lib/nova/instances glusterfsdefaults,_netdev,backupvolfile-server=controller2,backupvolfile-server=compute01 0 0
mount-a 挂载
上述挂载方式使用backupvolfile起到了高可用性，避免单点故障
nova、glance节点要挂载到instances、images的相关目录，根据实际服务部署情况调整，cinder不太一样，下边会说到。
4、设置相关权限
chown -R nova.nova /var/lib/nova/instances
chown -R glance.glance/var/lib/glance/images
chown -R nova:nova /data/brick1/instance
chown -R nova:nova /data/brick2/instance
chown -R nova:nova /data/brick3/instance
chown -R glance:glance /data/brick1/image
chown -R glance:glance /data/brick2/image
chown -R glance:glance /data/brick3/image
chown -R cinder:cinder /data/brick1/volume
chown -R cinder:cinder /data/brick2/volume
chown -R cinder:cinder /data/brick3/volume nova要有instance、cinder要有volume、glance要有image的读写权限，根据节点上的服务，给相应的权限。
5、配置cinder
cp /etc/cinder/cinder.conf{,.bak}
openstack-config --set/etc/cinder/cinder.conf DEFAULT volume_drivercinder.volume.drivers.glusterfs.GlusterfsDriver
openstack-config --set/etc/cinder/cinder.conf DEFAULT glusterfs_shares_config /etc/cinder/shares.conf
openstack-config --set /etc/cinder/cinder.confDEFAULT glusterfs_mount_point_base /var/lib/cinder/volumes
touch /etc/cinder/shares.conf
vim /etc/cinder/shares.conf#添加以下内容
controller1:/volumes
controller2:/volumes
compute01:/volumes #设置相关权限
chown -R cinder.cinder/etc/cinder/shares.conf
chown -R cinder:cinder /var/lib/cinder/*
6、重启openstack相关服务
openstack-service restart nova
openstack-service restart cinder
openstack-service restart glance
7、验证cinder
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