环境准备

系统

[root@VM_0_9_centos ~]# uname -a 
Linux VM_0_9_centos 3.10.0-957.el7.x86_64 #1 SMP Thu Nov 8 23:39:32 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
[root@VM_0_9_centos ~]# cat /etc/redhat-release 
CentOS Linux release 7.6.1810 (Core) 

硬盘:一块50G硬盘

[root@slave-09 ~]# lsblk 
NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sr0     11:0    1 37.7M  0 rom  
vda    253:0    0   50G  0 disk 
└─vda1 253:1    0   50G  0 part /
vdb    253:16   0   50G  0 disk 
├─vdb1 253:17   0   45G  0 part 
└─vdb2 253:18   0    5G  0 part 

节点信息

ip	主机名
172.17.0.9	slave-09
172.17.0.12	master-12
172.17.0.8	slave-08

格式化磁盘
采用xfs存储

    mkfs.xfs -f -i size=512 /dev/vdb
    mkdir -p /data/gcluster
    echo '/dev/vdb /data/gcluster xfs defaults 1 2' >> /etc/fstab
    mount -a && mount

[root@master-12 ~]# mkfs.xfs  -f -i size=512 /dev/vdb
meta-data=/dev/vdb               isize=512    agcount=4, agsize=3276800 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0, sparse=0
data     =                       bsize=4096   blocks=13107200, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal log           bsize=4096   blocks=6400, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0


[root@slave-09 ~]# lsblk 
NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sr0     11:0    1 37.7M  0 rom  
vda    253:0    0   50G  0 disk 
└─vda1 253:1    0   50G  0 part /
vdb    253:16   0   50G  0 disk /data/gcluster

安装glusterFS

yum install -y centos-release-gluster
yum install -y glusterfs glusterfs-server glusterfs-fuse glusterfs-rdma

[root@slave-09 ~]# systemctl start glusterd.service 
[root@slave-09 ~]# systemctl status glusterd.service

加入集群

[root@master-12 ~]# gluster peer probe master-12
peer probe: success. Probe on localhost not needed
[root@master-12 ~]# 
[root@master-12 ~]# gluster peer probe slave-09
peer probe: success. 
[root@master-12 ~]# gluster peer probe slave-08

查看集群状态

[root@master-12 ~]# gluster peer  status 
Number of Peers: 2

Hostname: slave-09
Uuid: 28815fe9-ce7f-4ed3-ae94-ef7d032b6854
State: Peer in Cluster (Connected)

Hostname: slave-08
Uuid: ef857dbe-7801-4f26-aa0e-95b8f98e1c64
State: Peer in Cluster (Connected)

安装gluster volume

在每个节点上创建volume目录

mkdir -p /data/gcluster/data

    gluster volume create gv0 replica 3 master-12:/data/gcluster/data  slave-09:/data/gcluster/data slave-08:/data/gcluster/data

[root@master-12 ~]#     gluster volume create gv0 replica 3 master-12:/data/gcluster/data  slave-09:/data/gcluster/data slave-08:/data/gcluster/data
volume create: gv0: success: please start the volume to access data
[root@master-12 ~]# gluster volume start gv0
volume start: gv0: success

[root@master-12 ~]# gluster volume info 
 
Volume Name: gv0
Type: Replicate
Volume ID: e5dcd35f-94af-4a6d-a8ad-feb1b5a4278d
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x 3 = 3
Transport-type: tcp
Bricks:
Brick1: master-12:/data/gcluster/data
Brick2: slave-09:/data/gcluster/data
Brick3: slave-08:/data/gcluster/data
Options Reconfigured:
transport.address-family: inet
nfs.disable: on
performance.client-io-threads: off

测试

mount -t glusterfs master-12:/gv0 /mnt

for i in `seq -w 1 100`; do cp -rp /var/log/messages /mnt/copy-test-$i; done

在每个服务器上都会有100个文件

参考
https://docs.gluster.org/en/latest/Quick-Start-Guide/Quickstart/
http://mirror.centos.org/centos/7/storage/x86_64/gluster-3.12/
https://www.cnblogs.com/jicki/p/5801712.html