标签（linux）： glusterfs
笔者Q:972581034 交流群：605799367。有任何疑问可与笔者或加群交流
今天我们来从实战中学习glusterfs
环境准备：
gluster-server两台,各添加一块10G硬盘：
db02db03
实现目标：
将文件系统挂载到web服务器的www站点用户上传目录
提示：提前就搭建好web服务器nginx，www站点。
=环境准备==
关闭防火墙：
systemctl disable firewalld
systemctl stop firewalld
selinux:
[root@db02 ~]# getenforce
Disabled
系统版本
[root@db03 ~]# cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)
[root@db03 ~]# uname -r
3.10.0-327.el7.x86_64
hosts解析
[root@db02 ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
172.16.1.52 db02
172.16.1.53 db03
172.16.1.250 docker
将添加的磁盘写入文件系统
mkfs.xfs -i size=512 /dev/sdb
创建挂载目录
mkdir -p /bricks/brick1
加入fstab开机自动挂载
echo "/dev/sdb /bricks/brick1 xfs defaults 1 2" >> /etc/fstab
[root@db03 ~]# tail -1 /etc/fstab
/dev/sdb /bricks/brick1 xfs defaults 1 2
#挂载/etc/fstab里面的所有条目
mount -a
以下如无特殊说明均在两台节点操作
安装：
所有服务器
yum install centos-release-gluster -y
yum install glusterfs-server -y
查看glusterfs版本
[root@db03 ~]# gluster --version
glusterfs 3.10.1
Repository revision: git://git.gluster.org/glusterfs.git
Copyright (c) 2006-2016 Red Hat, Inc. <https://www.gluster.org/>
GlusterFS comes with ABSOLUTELY NO WARRANTY.
It is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3
or later), or the GNU General Public License, version 2 (GPLv2),
in all cases as published by the Free Software Foundation.
启动服务
systemctl start gluster
systemctl enable glusterd
在任意一台节点上添加信任池
[root@db02 ~]# gluster peer probe db03
peer probe: success.
查看状态，如果从一个节点能看到其它节点说明OK
[root@db02 ~]# gluster peer status
Number of Peers: 1
Hostname: db03
Uuid: 6465d902-4ec6-4e21-a5dc-f196b499a07e
State: Peer in Cluster (Connected)
设置GlusterFS卷
[root@db02 ~]# mkdir /bricks/brick1/{www,bbs,blog,jpress}
[root@db02 ~]# tree /bricks/
/bricks/
└── brick1
├── bbs
├── blog
├── jpress
└── www
在任意一台机器上创建复制卷(可用性高,写性能不佳.读取速度快,可类比RAID 1)
[root@db02 ~]# gluster volume create www replica 2 db02:/bricks/brick1/www db03:/bricks/brick1/www
volume create: www: success: please start the volume to access data
[root@db02 ~]# for i in bbs blog jpress;do gluster volume create $i replica 2 db02:/bricks/brick1/$i db03:/bricks/brick1/$i;done
volume create: bbs: success: please start the volume to access data
volume create: blog: success: please start the volume to access data
volume create: jpress: success: please start the volume to access data
启动卷
[root@db02 ~]# for i in www bbs blog jpress;do gluster volume start $i;done
volume start: www: success
volume start: bbs: success
volume start: blog: success
volume start: jpress: success
确认卷显示“已启动”：
[root@db02 ~]# gluster volume info
Volume Name: bbs
Type: Replicate
Volume ID: d1776666-d035-4855-8758-fe199b6c1198
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: db02:/bricks/brick1/bbs
Brick2: db03:/bricks/brick1/bbs
Options Reconfigured:
transport.address-family: inet
nfs.disable: on
Volume Name: blog
Type: Replicate
Volume ID: d21a6a25-9da0-4940-a831-045257dc4550
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: db02:/bricks/brick1/blog
Brick2: db03:/bricks/brick1/blog
Options Reconfigured:
transport.address-family: inet
nfs.disable: on
Volume Name: jpress
Type: Replicate
Volume ID: b9835dcc-da68-4858-9009-2821e31b1cb3
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: db02:/bricks/brick1/jpress
Brick2: db03:/bricks/brick1/jpress
Options Reconfigured:
transport.address-family: inet
nfs.disable: on
Volume Name: www
Type: Replicate
Volume ID: 3c541856-f55b-4c03-82e9-d0fe58e6b2f2
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: db02:/bricks/brick1/www
Brick2: db03:/bricks/brick1/www
Options Reconfigured:
transport.address-family: inet
nfs.disable: on
创建www用户，由于
[root@db02 brick1]# useradd -s /sbin/nologin -M -u 1000 www
web服务器挂载卷
mount -t glusterfs db02:/www /application/nginx/html/www/uploads