CentOS6.4安装GlusterFS
主机分配：主机名 IP（Static） 系统 配置 角色
gfs-server01 192.168.20.21 CentOS-6.4-x86_64-minimal 2CPU,4G,50G,1网卡 存储节点01
gfs-server02 192.168.20.22 CentOS-6.4-x86_64-minimal 2CPU,4G,50G,1网卡 存储节点02
gfs-client 192.168.20.20 CentOS-6.4-x86_64-minimal 2CPU,4G,50G,1网卡 客户端
GlusterFS rpm下载地址：
http://download.gluster.org/pub/gluster/glusterfs/LATEST/RHEL/epel-6/x86_64/
Server端操作(192.168.20.21/22)
1.安装
(1).下载GlusterFS yum源：
# yum -y install wget
# wget -P /etc/yum.repos.d http://download.gluster.org/pub/gluster/glusterfs/LATEST/CentOS/glusterfs-epel.repo
(2).安装Gluster server：
# yum -y install glusterfs-server glusterfs
(3).启动Gluster server服务：
# service glusterd start
# chkconfig glusterd on
gfs-server02采用同样步骤。
2.配置
(1).将两个存储节点添加到一个集群中，在其中一个存储节点操作即可，不用添加本机：
# gluster peer probe 192.168.20.21
(2).检查集群节点信息
# gluster peer status
Number of Peers: 1
Hostname: 192.168.20.21
Uuid: 81e52f87-9671-4f21-9e18-0213b4f4f2c9
State: Peer in Cluster (Connected)
#
3440805e-95b0-4383-b59d-a58d1a79ab74
(3).以/data/gluster为共享目录，创建名为volume-sql的卷，副本数为2
# gluster volume create volume-sql replica 2 192.168.20.21:/data/gluster 192.168.20.22:/data/gluster
(4).启动卷
# gluster volume start volume-sql
(5).查看卷状态
# gluster volume info
Volume Name: volume-sql
Type: Replicate
Volume ID: a9fea762-0b46-4a0b-aa8f-27d21bd258d2
Status: Started
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: 192.168.20.21:/data/gluster
Brick2: 192.168.20.22:/data/gluster
Client端操作(192.168.20.20)
1.安装
(1).下载GlusterFS yum源：
# yum -y install wget
# wget -P /etc/yum.repos.d http://download.gluster.org/pub/gluster/glusterfs/LATEST/CentOS/glusterfs-epel.repo
(2).安装Gluster client：
# yum -y install glusterfs glusterfs-fuse
2.挂载
(1).创建挂载目录
# mkdir -p /openstack/mysql
(2).使用glusterfs挂载(挂载任意一个储存节点即可)
# mount -t glusterfs 192.168.20.21:/volume-sql /openstack/mysql
# echo "192.168.20.21:/volume-sql /openstack/mysql glusterfs defaults,_netdev 0 0" >> /etc/fstab
(3).使用NFS挂载(注意远端的rpcbind服务必须开启)
# mount -t nfs -o mountproto=tcp,vers=3 192.168.20.21:/volume-sql /openstack/mysql
# echo "192.168.20.21:/volume-sql /openstack/mysql nfs mountproto=tcp,vers=3 0 0“
3.测试
(1).拷贝文件到/openstack/mysql/
# cp -av /root/centos6.4_20G.qcow2 /openstack/mysql/
(2).存储节点上查看文件：
# ls /data/gluster/
centos6.4_20G.qcow2
# md5sum /data/gluster/centos6.4_20G.qcow2
94469f217dbe3cc54ebe2771b31d0fee/data/gluster/centos6.4_20G.qcow2
# ls /data/gluster/
# md5sum /data/gluster/centos6.4_20G.qcow2
94469f217dbe3cc54ebe2771b31d0fee/data/gluster/centos6.4_20G.qcow2
4.常用命令
(1).删除卷
# gluster volume stop volume-sql
# gluster volume delete volume-sql
(2).将存储节点移除集群
# gluster peer detach 192.168.20.23
(3).允许某些网段访问某个卷
# gluster volume set volume-sql auth.allow 192.168.20.*
(4).添加新存储节点到集群
# gluster peer probe 192.168.20.24
# gluster peer probe 192.168.20.25
# gluster volume add-brick volume-sql 192.168.20.24:/data/gluster 192.168.20.25:/data/gluster
(5).收缩卷
先迁移数据到其他位置：
# gluster volume remove-brick volume-sql 192.168.20.26:/data/gluster/volume-sql 192.168.20.27:/data/gluster/volume-sql start
查看数据迁移状态：
# gluster volume remove-brick volume-sql 192.168.20.26:/data/gluster/volume-sql 192.168.20.27:/data/gluster/volume-sql status
迁移完成后提交：
# gluster volume remove-brick volume-sql 192.168.20.26:/data/gluster/volume-sql 192.168.20.27:/data/gluster/volume-sql commit
(6).迁移卷
添加存储节点：
# gluster peer probe 192.168.20.28
开始卷迁移：
# gluster volume replace-brick volume-sql 192.168.20.21:/data/gluster/volume-sql 192.168.20.28:/data/gluster/volume-sql start
查看迁移状态：
# gluster volume replace-brick volume-sql 192.168.20.21:/data/gluster/volume-sql 192.168.20.28:/data/gluster/volume-sql status
迁移完毕后提交：
# gluster volume replace-brick volume-sql 192.168.20.21:/data/gluster/volume-sql 192.168.20.28:/data/gluster/volume-sql commit
如果机器192.168.20.21出现故障已经不能运行，执行强制提交然后Gluster马上执行一次同步：
# gluster volume replace-brick img 192.168.20.21:/data/gluster/volume-sql 192.168.20.28:/data/gluster/volume-sql commit -force
# gluster volume heal imgs full
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