原理
提起分布式存储，简单的说，就是我可以建立一个多节点的分布式存储集群，对用户来说我可能只存储到某一个路径下，但是系统会自动往其他节点进行复制，也就是其实你的数据复制了N份（按照你的节点来说），这样即使有一个节点出现问题，也不影响其他节点的数据，这样就达到了存储高可用性的目的，当然这种方式最大的优点就是不需要花费额外费用，使用廉价的硬件资源就可以满足需求。
GlusterFS采用模块化、堆栈式的架构，可通过灵活的配置支持高度定制化的应用环境，比如大文件存储、海量小文件存储、云存储、多传输协议应用等。每个功能以模块形式实现，然后以积木方式进行简单的组合，即可实现复杂的功能。比如，Replicate模块可实现RAID1，Stripe模块可实现RAID0，通过两者的组合可实现RAID10和RAID01，同时获得高性能和高可靠性。如下图所示：
特点
扩展性和高性能
GlusterFS利用双重特性来提供几TB至数PB的高扩展存储解决方案。Scale-Out架构允许通过简单地增加资源来提高存储容量和性能，磁盘、计算和I/O资源都可以独立增加，支持10GbE和InfiniBand等高速网络互联。Gluster弹性哈希（Elastic Hash）解除了GlusterFS对元数据服务器的需求，消除了单点故障和性能瓶颈，真正实现了并行化数据访问。
高可用性
GlusterFS可以对文件进行自动复制，如镜像或多次复制，从而确保数据总是可以访问，甚至是在硬件故障的情况下也能正常访问。自我修复功能能够把数据恢复到正确的状态，而且修复是以增量的方式在后台执行，几乎不会产生性能负载。GlusterFS没有设计自己的私有数据文件格式，而是采用操作系统中主流标准的磁盘文件系统（如EXT3、ZFS）来存储文件，因此数据可以使用各种标准工具进行复制和访问。
全局统一命名空间
全局统一命名空间将磁盘和内存资源聚集成一个单一的虚拟存储池，对上层用户和应用屏蔽了底层的物理硬件。存储资源可以根据需要在虚拟存储池中进行弹性扩展，比如扩容或收缩。当存储虚拟机映像时，存储的虚拟映像文件没有数量限制，成千虚拟机均通过单一挂载点进行数据共享。虚拟机I/O可在命名空间内的所有服务器上自动进行负载均衡，消除了SAN环境中经常发生的访问热点和性能瓶颈问题。
弹性哈希算法
GlusterFS采用弹性哈希算法在存储池中定位数据，而不是采用集中式或分布式元数据服务器索引。在其他的Scale-Out存储系统中，元数据服务器通常会导致I/O性能瓶颈和单点故障问题。GlusterFS中，所有在Scale-Out存储配置中的存储系统都可以智能地定位任意数据分片，不需要查看索引或者向其他服务器查询。这种设计机制完全并行化了数据访问，实现了真正的线性性能扩展。
弹性卷管理
数据储存在逻辑卷中，逻辑卷可以从虚拟化的物理存储池进行独立逻辑划分而得到。存储服务器可以在线进行增加和移除，不会导致应用中断。逻辑卷可以在所有配置服务器中增长和缩减，可以在不同服务器迁移进行容量均衡，或者增加和移除系统，这些操作都可在线进行。文件系统配置更改也可以实时在线进行并应用，从而可以适应工作负载条件变化或在线性能调优。
基于标准协议
Gluster存储服务支持NFS, CIFS, HTTP, FTP以及Gluster原生协议，完全与POSIX标准兼容。现有应用程序不需要作任何修改或使用专用API，就可以对Gluster中的数据进行访问。这在公有云环境中部署Gluster时非常有用，Gluster对云服务提供商专用API进行抽象，然后提供标准POSIX接口。
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实验环境
10.30.1.231 glfs1 GlusterFS分布式存储服务器1
10.30.1.232 glfs2 GlusterFS分布式存储服务器2
10.30.1.233 glfs3 GlusterFS分布式存储服务器3
10.30.1.234 glfs4 GlusterFS分布式存储服务器4
10.30.1.201 node1 openstack控制节点1
10.30.1.202 node2 openstack控制节点2
10.30.1.203 node3 openstack计算节点1
10.30.1.204 node4 openstack计算节点2
添加hosts文件实现集群主机的相互通信
管理服务器和agent端都添加hosts文件实现集群主机之间相互能够解析
#echo -e "10.30.1.231 glfs1\n10.30.1.232 glfs2\n10.30.1.233 glfs3\n10.30.1.234 glfs4" >> /etc/hosts
修改每台机器的 /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
10.30.1.231 glfs1
10.30.1.232 glfs2
10.30.1.233 glfs3
10.30.1.234 glfs4
关闭selinux和防火墙
setenforce 0
sed -i 's/SELINUX=.*/SELINUX=disabled/' /etc/selinux/config
systemctl stop iptables
systemctl stop firewalld
systemctl disable iptables
systemctl disable firewalld
1.安装glusterfs
glusterfs官方下载地址:https://download.gluster.org/pub/gluster/glusterfs/
当然你的主机联网的情况下，用下面的方法安装更便捷
yum install centos-release-gluster7 -y
yum install -y glusterfs-server glusterfs-cli glusterfs-geo-replication
2.配置glusterfs
2.1查看版本信息
glusterfs -V
2.2启动停止glusterfs服务
systemctl start glusterfsd
systemctl start glusterd
2.3设置开机启动
systemctl enable glusterfsd
systemctl enable glusterd
2.4服务运行状态查看
systemctl status glusterd
2.5存储主机加入信任存储池
[root@glfs1 ~]# gluster peer probe glfs2
[root@glfs1 ~]# gluster peer probe glfs3
[root@glfs1 ~]# gluster peer probe glfs4
注：除了自己这台服务器，加入其他所有服务器
2.6状态查看
gluster peer status
Number of Peers: 3
Hostname: glfs2
Uuid: ec9f45ad-afd8-45a9-817f-f76da020eb8d
State: Peer in Cluster (Connected)
Hostname: glfs3
Uuid: efc1aaec-191b-4c2c-bcbf-58467d2611c1
State: Peer in Cluster (Connected)
Hostname: glfs4
Uuid: 7fc1e778-c2f7-4970-b8f6-039ab0d2792b
State: Peer in Cluster (Connected)
2.7创建分布式复制卷
六种类型的volume可以被创建：
Distributed：分布式卷，文件通过hash算法随机的分布到由bricks组成的卷上。
Replicated：复制式卷，类似raid1，replica数必须等于volume中brick所包含的存储服务器数，可用性高。
Striped：条带式卷，类似与raid0，stripe数必须等于volume中brick所包含的存储服务器数，文件被分成数据块，以Round
Robin的方式存储在bricks中，并发粒度是数据块，大文件性能好。
Distributed Striped：分布式的条带卷，volume中brick所包含的存储服务器数必须是stripe的倍数(>=2倍)，兼顾分布式和条带式的功能。
Distributed Replicated：分布式的复制卷，volume中brick所包含的存储服务器数必须是 replica 的倍数(>=2倍)，兼顾分布式和复制式的功能。
Distributed striped replicated ：分布式条带复制卷 （核心内容，推荐生产环境使用）
创建命令参考(Distributed Replicated：分布式的复制卷)
# mkfs.xfs -f /dev/sdb
# mkdir -p /storage/brick2
# mkfs.xfs -f /dev/sdc
# mkdir -p /storage/brick3
# mount /dev/sdb /storage/brick2
# mount /dev/sdc /storage/brick3
# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 96G 790M 91G 1% /
tmpfs 499M 0 499M 0% /dev/shm
/dev/sda1 477M 28M 425M 7% /boot
/dev/sdb 100G 43M 100G 1% /storage/brick1
/dev/sdc 100G 33M 100G 1% /storage/brick2
/dev/sdd 100G 33M 100G 1% /storage/brick3
# echo "/dev/sdb /storage/brick2 xfs defaults 0 0" >> /etc/fstab
# echo "/dev/sdc /storage/brick3 xfs defaults 0 0" >> /etc/fstab
# gluster volume create gv9 replica 2 glfs1:/storage/brick2 glfs2:/storage/brick2 glfs3:/storage/brick2 glfs4:/storage/brick2 glfs1:/storage/brick3 glfs2:/storage/brick3 glfs3:/storage/brick3 glfs4:/storage/brick3 force
# gluster volume info gv9
Volume Name: gv9
Type: Distributed-Replicate
Volume ID: 73f05436-a34a-49fc-b354-6d0890c326db
Status: Started
Snapshot Count: 0
Number of Bricks: 4 x 2 = 8
Transport-type: tcp
Bricks:
Brick1: glfs1:/storage/brick2
Brick2: glfs2:/storage/brick2
Brick3: glfs3:/storage/brick2
Brick4: glfs4:/storage/brick2
Brick5: glfs1:/storage/brick3
Brick6: glfs2:/storage/brick3
Brick7: glfs3:/storage/brick3
Brick8: glfs4:/storage/brick3
Options Reconfigured:
transport.address-family: inet
storage.fips-mode-rchecksum: on
nfs.disable: on
performance.client-io-threads: off
手动放开nfs,并重启volume
# gluster volume info gv9
Volume Name: gv9
Type: Distributed-Replicate
Volume ID: 14b16ff2-b60b-44f5-8eaa-f4348d340ac3
Status: Started
Snapshot Count: 0
Number of Bricks: 4 x 2 = 8
Transport-type: tcp
Bricks:
Brick1: glfs1:/storage/brick2
Brick2: glfs2:/storage/brick2
Brick3: glfs3:/storage/brick2
Brick4: glfs4:/storage/brick2
Brick5: glfs1:/storage/brick3
Brick6: glfs2:/storage/brick3
Brick7: glfs3:/storage/brick3
Brick8: glfs4:/storage/brick3
Options Reconfigured:
transport.address-family: inet
storage.fips-mode-rchecksum: on
nfs.disable: on
performance.client-io-threads: off
# gluster volume set gv9 nfs.disable off
volume set: success
# gluster volume stop gv9
# gluster volume start gv9
3.安装nfs服务
[root@glfs1 ~]# yum install nfs-utils rpcbind -y
[root@glfs1 ~]# mkdir -pv /instances
[root@glfs1 ~]# systemctl start nfs
[root@glfs1 ~]# systemctl enable nfs
[root@glfs1 ~]# systemctl start rpcbind
[root@glfs1 ~]# systemctl enable rpcbind
[root@glfs1 ~]# echo '/instances 10.30.1.0/24(fsid=0,rw,no_root_squash)' >>/etc/exports
[root@glfs1 ~]# systemctl restart nfs
1 nova与glusterfs结合
在所有计算节点上，把创建成功的，glusterfs共享出来的volume，挂在到/var/lib/nova/instances目录：
mount -t glusterfs <本机IP>:/instances /var/lib/nova/instances
chown -R nova:nova /var/lib/nova/instances
示范操作
挂载（当前生效）
[root@node3 ~]# mount -t glusterfs 10.30.1.231:/gv9 /var/lib/nova/instances/
挂载（永久）
[root@node7 ~]# echo "10.30.1.231:/gv9 /var/lib/nova/instances glusterfs defaults,_netdev 0 0" >> /etc/fstab
注：要在所有openstack计算节点添加对应的主机名和IP解析，要不挂载不上
[root@node3 ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
#10.30.1.249 mirror.centos.org
10.30.1.201 node1
10.30.1.202 node2
10.30.1.203 node3
10.30.1.204 node4
10.30.1.205 node5
10.30.1.206 node6
10.30.1.231 glfs1
10.30.1.232 glfs2
10.30.1.233 glfs3
10.30.1.234 glfs4
作为nova云主机的镜像存储空间后各节点下的文件如下
10.30.1.231 | CHANGED | rc=0 >>
/storage/brick2
├── 00bb0e63-c904-43df-b553-45a15b3ecf94
├── 28afde38-8547-40f6-9145-d34718782b02
├── 5d578231-3277-4533-afe8-96cfa6704d5b
│ ├── disk
│ └── disk.info
├── 62fa8664-513c-46d4-9237-bdb5d93769c6
│ ├── disk
│ └── disk.info
├── ad3b8b4f-7fc7-49b6-a216-fdea39ff0870
│ ├── disk
│ └── disk.info
├── _base
├── d33c01d9-cb42-446e-a0e1-180ca35b9689
│ ├── console.log
│ └── disk.info
├── e7c2bd59-30ac-4c8e-a95b-607697903b14
│ ├── console.log
│ └── disk.info
├── ef692cfd-c8a9-4c77-be69-e934b9aff838
│ ├── disk
│ └── disk.info
├── f7394f15-aea2-49bd-b0b3-da4f7ef76737
└── locks
/storage/brick3
├── 00bb0e63-c904-43df-b553-45a15b3ecf94
├── 28afde38-8547-40f6-9145-d34718782b02
├── 5d578231-3277-4533-afe8-96cfa6704d5b
│ ├── console.log
│ └── disk.info
├── 62fa8664-513c-46d4-9237-bdb5d93769c6
│ ├── console.log
│ └── disk.info
├── a36c45ee0cb50b3d5f57afcff5c9a552becfe68b
├── ad3b8b4f-7fc7-49b6-a216-fdea39ff0870
│ ├── console.log
│ └── disk.info
├── _base
├── d33c01d9-cb42-446e-a0e1-180ca35b9689
│ ├── disk
│ └── disk.info
├── e7c2bd59-30ac-4c8e-a95b-607697903b14
│ ├── disk
│ └── disk.info
├── ef692cfd-c8a9-4c77-be69-e934b9aff838
│ ├── console.log
│ └── disk.info
├── f7394f15-aea2-49bd-b0b3-da4f7ef76737
└── locks
├── nova-08af414964fe4c5a827e9a263419d72905d0069b
└── nova-a36c45ee0cb50b3d5f57afcff5c9a552becfe68b
22 directories, 27 files
10.30.1.232 | CHANGED | rc=0 >>
/storage/brick2
├── 00bb0e63-c904-43df-b553-45a15b3ecf94
├── 28afde38-8547-40f6-9145-d34718782b02
├── 5d578231-3277-4533-afe8-96cfa6704d5b
│ ├── disk
│ └── disk.info
├── 62fa8664-513c-46d4-9237-bdb5d93769c6
│ ├── disk
│ └── disk.info
├── ad3b8b4f-7fc7-49b6-a216-fdea39ff0870
│ ├── disk
│ └── disk.info
├── _base
├── d33c01d9-cb42-446e-a0e1-180ca35b9689
│ ├── console.log
│ └── disk.info
├── e7c2bd59-30ac-4c8e-a95b-607697903b14
│ ├── console.log
│ └── disk.info
├── ef692cfd-c8a9-4c77-be69-e934b9aff838
│ ├── disk
│ └── disk.info
├── f7394f15-aea2-49bd-b0b3-da4f7ef76737
└── locks
/storage/brick3
├── 00bb0e63-c904-43df-b553-45a15b3ecf94
├── 28afde38-8547-40f6-9145-d34718782b02
├── 5d578231-3277-4533-afe8-96cfa6704d5b
│ ├── console.log
│ └── disk.info
├── 62fa8664-513c-46d4-9237-bdb5d93769c6
│ ├── console.log
│ └── disk.info
├── a36c45ee0cb50b3d5f57afcff5c9a552becfe68b
├── ad3b8b4f-7fc7-49b6-a216-fdea39ff0870
│ ├── console.log
│ └── disk.info
├── _base
├── d33c01d9-cb42-446e-a0e1-180ca35b9689
│ ├── disk
│ └── disk.info
├── e7c2bd59-30ac-4c8e-a95b-607697903b14
│ ├── disk
│ └── disk.info
├── ef692cfd-c8a9-4c77-be69-e934b9aff838
│ ├── console.log
│ └── disk.info
├── f7394f15-aea2-49bd-b0b3-da4f7ef76737
└── locks
├── nova-08af414964fe4c5a827e9a263419d72905d0069b
└── nova-a36c45ee0cb50b3d5f57afcff5c9a552becfe68b
22 directories, 27 files
10.30.1.233 | CHANGED | rc=0 >>
/storage/brick2
├── 00bb0e63-c904-43df-b553-45a15b3ecf94
│ ├── disk
│ └── disk.info
├── 28afde38-8547-40f6-9145-d34718782b02
│ ├── console.log
│ └── disk.info
├── 5d578231-3277-4533-afe8-96cfa6704d5b
├── 62fa8664-513c-46d4-9237-bdb5d93769c6
├── ad3b8b4f-7fc7-49b6-a216-fdea39ff0870
├── _base
│ └── a36c45ee0cb50b3d5f57afcff5c9a552becfe68b
├── compute_nodes
├── d33c01d9-cb42-446e-a0e1-180ca35b9689
├── e7c2bd59-30ac-4c8e-a95b-607697903b14
├── ef692cfd-c8a9-4c77-be69-e934b9aff838
├── f7394f15-aea2-49bd-b0b3-da4f7ef76737
│ ├── disk
│ └── disk.info
└── locks
└── nova-storage-registry-lock
/storage/brick3
├── 00bb0e63-c904-43df-b553-45a15b3ecf94
│ ├── console.log
│ └── disk.info
├── 08af414964fe4c5a827e9a263419d72905d0069b
├── 28afde38-8547-40f6-9145-d34718782b02
│ ├── disk
│ └── disk.info
├── 5d578231-3277-4533-afe8-96cfa6704d5b
├── 62fa8664-513c-46d4-9237-bdb5d93769c6
├── ad3b8b4f-7fc7-49b6-a216-fdea39ff0870
├── _base
│ └── a36c45ee0cb50b3d5f57afcff5c9a552becfe68b
├── d33c01d9-cb42-446e-a0e1-180ca35b9689
├── e7c2bd59-30ac-4c8e-a95b-607697903b14
├── ef692cfd-c8a9-4c77-be69-e934b9aff838
├── f7394f15-aea2-49bd-b0b3-da4f7ef76737
│ ├── console.log
│ └── disk.info
└── locks
22 directories, 17 files
10.30.1.234 | CHANGED | rc=0 >>
/storage/brick2
├── 00bb0e63-c904-43df-b553-45a15b3ecf94
│ ├── disk
│ └── disk.info
├── 28afde38-8547-40f6-9145-d34718782b02
│ ├── console.log
│ └── disk.info
├── 5d578231-3277-4533-afe8-96cfa6704d5b
├── 62fa8664-513c-46d4-9237-bdb5d93769c6
├── ad3b8b4f-7fc7-49b6-a216-fdea39ff0870
├── _base
│ └── a36c45ee0cb50b3d5f57afcff5c9a552becfe68b
├── compute_nodes
├── d33c01d9-cb42-446e-a0e1-180ca35b9689
├── e7c2bd59-30ac-4c8e-a95b-607697903b14
├── ef692cfd-c8a9-4c77-be69-e934b9aff838
├── f7394f15-aea2-49bd-b0b3-da4f7ef76737
│ ├── disk
│ └── disk.info
└── locks
└── nova-storage-registry-lock
/storage/brick3
├── 00bb0e63-c904-43df-b553-45a15b3ecf94
│ ├── console.log
│ └── disk.info
├── 08af414964fe4c5a827e9a263419d72905d0069b
├── 28afde38-8547-40f6-9145-d34718782b02
│ ├── disk
│ └── disk.info
├── 5d578231-3277-4533-afe8-96cfa6704d5b
├── 62fa8664-513c-46d4-9237-bdb5d93769c6
├── ad3b8b4f-7fc7-49b6-a216-fdea39ff0870
├── _base
│ └── a36c45ee0cb50b3d5f57afcff5c9a552becfe68b
├── d33c01d9-cb42-446e-a0e1-180ca35b9689
├── e7c2bd59-30ac-4c8e-a95b-607697903b14
├── ef692cfd-c8a9-4c77-be69-e934b9aff838
├── f7394f15-aea2-49bd-b0b3-da4f7ef76737
│ ├── console.log
│ └── disk.info
└── locks
22 directories, 17 files
计算节点的云主机
10.30.1.204 | CHANGED | rc=0 >>
28afde38-8547-40f6-9145-d34718782b02 instance-000000a2
d33c01d9-cb42-446e-a0e1-180ca35b9689 instance-000000a4
ef692cfd-c8a9-4c77-be69-e934b9aff838 instance-000000a6
f7394f15-aea2-49bd-b0b3-da4f7ef76737 instance-000000a8
e7c2bd59-30ac-4c8e-a95b-607697903b14 instance-000000aa
10.30.1.203 | CHANGED | rc=0 >>
62fa8664-513c-46d4-9237-bdb5d93769c6 instance-000000a3
00bb0e63-c904-43df-b553-45a15b3ecf94 instance-000000a5
ad3b8b4f-7fc7-49b6-a216-fdea39ff0870 instance-000000a7
5d578231-3277-4533-afe8-96cfa6704d5b instance-000000a9
手动关闭glfs4主机，发现对运行的云主机没有影响，说明了使用glusterfs的高可用性
[root@glfs1 ~]# gluster volume status gv9
Status of volume: gv9
Gluster process TCP Port RDMA Port Online Pid
------------------------------------------------------------------------------
Brick glfs1:/storage/brick2 49152 0 Y 3705
Brick glfs2:/storage/brick2 49152 0 Y 3402
Brick glfs3:/storage/brick2 49152 0 Y 3405
Brick glfs1:/storage/brick3 49153 0 Y 3714
Brick glfs2:/storage/brick3 49153 0 Y 3411
Brick glfs3:/storage/brick3 49153 0 Y 3414
Self-heal Daemon on localhost N/A N/A Y 3742
NFS Server on localhost N/A N/A N N/A
Self-heal Daemon on glfs3 N/A N/A Y 3576
NFS Server on glfs3 N/A N/A N N/A
Self-heal Daemon on glfs2 N/A N/A Y 3575
NFS Server on glfs2 N/A N/A N N/A
Task Status of Volume gv9
------------------------------------------------------------------------------
There are no active volume tasks
注：由于所有计算节点都挂载了相同的volume，openstack平台上能实现虚机的热迁移
2 glance与glusterfs结合
在控制节点上，把创建成功的，glusterfs共享出来的volume，挂在到/var/lib/glance/images目录：
mount -t glusterfs <本机IP>:/images /var/lib/glance/images
chown -R glance:glance /var/lib/glance/images
添加images、instances到fstab自动挂载
10.30.1.231:/images /var/lib/glance/images glusterfs defaults,_netdev,backupvolfile-server=controller2,backupvolfile-server=compute01 0 0
10.30.1.231:/instances /var/lib/nova/instances glusterfs defaults,_netdev,backupvolfile-server=controller2,backupvolfile-server=compute01 0 0
使用backupvolfile起到了高可用性，避免单点故障
3 cinder与glusterfs结合(openstack ocata中已经将cinder的glusterfs驱动移除，不再支持glusterfs)
3.1 cinder常用的三种后端
（1）本地创建逻辑卷lvm后端
（2）glusterfs后端
cinder.conf配置如下：
[DEFAULT]
enabled_backends = lvm,nfs,,glusterfs
[lvm]
volume_driver = cinder.volume.drivers.lvm.LVMVolumeDriver
volume_backend_name=openstack_LVM
volume_group = cinder-volumes
iscsi_protocol = iscsi
iscsi_helper = lioadm
[glusterfs]
volume_driver=cinder.volume.drivers.glusterfs.GlusterfsDriver
volume_backend_name=GlusterFS
glusterfs_shares_config=/etc/cinder/shares.conf
glusterfs_mount_point_base=/var/lib/cinder/glusterfs
3.2 GlusterFS
块存储服务中，GlusterFS Driver官方文档：
安装glusterfs服务器
在cinder节点10.30.1.205上，安装glusterfs客户端软件
# yum -y install glusterfs-client glusterfs-fuse
mkfs.xfs -f /dev/vdf
mkdir -p /storage/brick6
mkfs.xfs -f /dev/vdg
mkdir -p /storage/brick7
mount /dev/vdf /storage/brick6
mount /dev/vdg /storage/brick7
echo "/dev/vdf /storage/brick6 xfs defaults 0 0" >> /etc/fstab
echo "/dev/vdg /storage/brick7 xfs defaults 0 0" >> /etc/fstab
[root@glfs1 ~]# gluster volume create gv11 replica 2 glfs1:/storage/brick6 glfs2:/storage/brick6 glfs3:/storage/brick6 glfs4:/storage/brick6 glfs1:/storage/brick7 glfs2:/storage/brick7 glfs3:/storage/brick7 glfs4:/storage/brick7 force
[root@glfs1 ~]# gluster volume start gv11
volume挂载到cinder节点上
[root@node5 ~]# mkdir -pv /var/lib/cinder/glusterfs
[root@node5 ~]# mount -t glusterfs 10.30.1.231:/gv11 /var/lib/cinder/glusterfs
1 在cinder节点，cinder-volume端配置内容如下
[DEFAULT]
enabled_backends = glusterfs
[glusterfs] #最后添加
volume_driver = cinder.volume.drivers.glusterfs.GlusterfsDriver #驱动
glusterfs_shares_config = /etc/cinder/shares.conf #glusterfs存储
glusterfs_mount_point_base = /var/lib/cinder/volumes #挂载点
Configuration option = Default value Description
[DEFAULT]
glusterfs_backup_mount_point = $state_path/backup_mount (StrOpt) Base dir containing mount point for gluster share.
glusterfs_backup_share = None (StrOpt) GlusterFS share in <hostname|ipv4addr|ipv6addr>:<gluster_vol_name> format. Eg: 1.2.3.4:backup_vol
glusterfs_mount_point_base = $state_path/mnt (StrOpt) Base dir containing mount points for gluster shares.
glusterfs_shares_config = /etc/cinder/glusterfs_shares (StrOpt) File with the list of available gluster shares
nas_volume_prov_type = thin (StrOpt) Provisioning type that will be used when creating volumes.
2. 配置glusterfs存储配置
在/etc/cinder/shares.conf文件中配置上卷信息：
# cat /etc/cinder/shares.conf
10.30.1.231:/gv11
文件中添加glusterfs卷信息，注意该文件的权限，所属组
[root@node5 ~]#chown root.cinder /etc/cinder/shares.conf
[root@node5 ~]#chmod 640 /etc/cinder/shares.conf
[root@node5 ~]# chown -R cinder:cinder /var/lib/cinder/*
[root@node5 ~]# ll /var/lib/cinder/volumes/
3. 重启cinder-volume服务
# systemctl restart openstack-cinder-volume
检查日志信息，看是否有错误/var/log/cinder/volume.log
重启服务后，使用mount查看信息：
10.30.1.231:/gv11 on /var/lib/cinder/volumes/16b81d8d542fdbf4d70330bb672e9714 type fuse.glusterfs (rw,default_permissions,allow_other,max_read=131072)
4. controller节点检查服务状态
controller节点的/etc/cinder/cinder.conf文件中添加内容
[glusterfs]
volume_driver=cinder.volume.drivers.glusterfs.GlusterfsDriver
查看服务状态：
[root@node1 ~]# cinder service-list
+------------------+----------------------+------+---------+-------+----------------------------+-----------------+
| Binary | Host | Zone | Status | State | Updated_at | Disabled Reason |
+------------------+----------------------+------+---------+-------+----------------------------+-----------------+
| cinder-scheduler | controller | nova | enabled | up | 2017-05-17T09:35:38.000000 | - |
| cinder-volume | controller@glusterfs | nova | enabled | up | 2017-05-17T09:35:43.000000 | - |
+------------------+----------------------+------+---------+-------+----------------------------+-----------------+
5. controller建立type
[root@node1 ~]#cinder type-create glusterfs
+--------------------------------------+-----------+-------------+-----------+
| ID | Name | Description | Is_Public |
+--------------------------------------+-----------+-------------+-----------+
| ffd4caf8-2b0f-48d8-aaea-488339922914 | glusterfs | - | True |
+--------------------------------------+-----------+-------------+-----------+
6. controller配置cinder-type和volume_backend_name联动
[root@node1 ~]#cinder type-key glusterfs set volume_backend_name=glusterfs
#查看type的设置情况
[root@node1 ~]#cinder extra-specs-list
+--------------------------------------+-----------+----------------------------------------+
| ID | Name | extra_specs |
+--------------------------------------+-----------+----------------------------------------+
| ffd4caf8-2b0f-48d8-aaea-488339922914 | glusterfs | {u'volume_backend_name': u'glusterfs'} |
+--------------------------------------+-----------+----------------------------------------+
7. 重启controller的cinder服务
[root@node1 ~]#systemctl restart openstack-cinder-scheduler
cinder-scheduler stop/waiting
cinder-scheduler start/running, process 27121
[root@node1 ~]#service cinder-api restart
cinder-api stop/waiting
cinder-api start/running, process 27157
8 创建cinder volume
[root@node1 ~]# cinder create --display-name "test1" --volume-type glusterfs 10 #执行cinder type的类型
[root@node1 ~]# cinder show 59e2e560-6633-45f4-9d73-6f7ea62c06ef
+---------------------------------------+--------------------------------------+
| Property | Value |
+---------------------------------------+--------------------------------------+
| attachments | [] |
| availability_zone | nova |
| bootable | false |
| consistencygroup_id | None |
| created_at | 2017-05-17T09:19:47.000000 |
| description | None |
| encrypted | False |
| id | 59e2e560-6633-45f4-9d73-6f7ea62c06ef |
| metadata | {} |
| migration_status | None |
| multiattach | False |
| name | test1 |
| os-vol-host-attr:host | controller@glusterfs#GlusterFS |
| os-vol-mig-status-attr:migstat | None |
| os-vol-mig-status-attr:name_id | None |
| os-vol-tenant-attr:tenant_id | 27a967778eb84f5296258809de65f15e |
| os-volume-replication:driver_data | None |
| os-volume-replication:extended_status | None |
| replication_status | disabled |
| size | 10 |
| snapshot_id | None |
| source_volid | None |
| status | available |
| user_id | 73b742285a6049d5a806d34c2020a1e1 |
| volume_type | glusterfs |
+---------------------------------------+--------------------------------------+
9 查看两个集群节点的存储内容
[root@glfs1 ~]# ls /storage/*
/storage/brick6:
volume-59e2e560-6633-45f4-9d73-6f7ea62c06ef
/storage/brick7: