阿里云挂载数据卷教程
    我这里两台机器都挂了新的云盘在/mnt下

    安装Gluster

    1. [root@alice003 ~]# vim /etc/hosts                                                                                               
    2. [root@alice003 ~]# cat /etc/hosts
    3. ::1    localhost    localhost.localdomain    localhost6    localhost6.localdomain6
    4. 127.0.0.1    localhost    localhost.localdomain    localhost4    localhost4.localdomain4
    6. 172.23.187.173    alice002
    7. 172.23.187.174    alice003
    9. [root@alice003 ~]# yum install centos-release-gluster
    10. [root@alice003 ~]# vim /etc/yum.repos.d/CentOS-Gluster-9.repo                                                                   
    11. [root@alice003 ~]# vim /etc/yum.repos.d/CentOS-Storage-common.repo
    12. 修改 gpgcheck=0                                                 
    13. [root@alice003 ~]# yum install glusterfs glusterfs-libs glusterfs-server
    17. [root@alice003 ~]# systemctl start glusterd.service
    18. [root@alice003 ~]# systemctl enable glusterd.service
    19. [root@alice003 ~]# systemctl status glusterd.service
    20. [root@alice003 ~]# netstat -lntup|grep gluster
    21. tcp        0      0 0.0.0.0:24007           0.0.0.0:*               LISTEN      25994/glusterd      
    22. [root@alice003 ~]# gluster peer probe alice002
    23. [root@alice003 ~]# gluster peer status
    24. Number of Peers: 1
    26. Hostname: alice002
    27. Uuid: 84341579-3e2f-46a4-9347-6d37a5c7c7c1
    28. State: Peer in Cluster (Connected)

    配置复制卷

    这条命令的意思是使用Replicated的方式，建立一个名为g_volume 的卷(Volume)，存储块(Brick)为2个，分别为node01:/data/brick2和node02:/data/brick2；
[root@alice003 ~]# gluster volume create g_volume replica 2 alice002:/mnt alice003:/mnt
Replica 2 volumes are prone to split-brain. Use Arbiter or Replica 3 to avoid this. See: http://docs.gluster.org/en/latest/Administrator%20Guide/Split%20brain%20and%20ways%20to%20deal%20with%20it/.
Do you still want to continue?
 (y/n) y
volume create: g_volume: failed: The brick alice003:/mnt is a mount point. Please create a sub-directory under the mount point and use that as the brick directory. Or use 'force' at the end of the command if you want to override this behavior.
这里mnt是挂载点 所以不行 
[root@alice003 ~]# mkdir -p /mnt/brick1

[root@alice003 ~]# gluster volume create g_volume replica 2 alice002:/mnt/brick1 alice003:/mnt/brick1
Replica 2 volumes are prone to split-brain. Use Arbiter or Replica 3 to avoid this. See: http://docs.gluster.org/en/latest/Administrator%20Guide/Split%20brain%20and%20ways%20to%20deal%20with%20it/.
Do you still want to continue?
 (y/n) y 因为复制卷在双方主机通信有故障再恢复通信时容易发生脑裂 所以提示 可以在最后添加 force  参数
volume create: g_volume: success: please start the volume to access data

[root@alice003 ~]# gluster volume start g_volume
volume start: g_volume: success
[root@alice003 ~]# gluster volume info g_volume

Volume Name: g_volume
Type: Replicate
Volume ID: b6a69ac8-4898-441b-8935-8cb3b217525f
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: alice002:/mnt/brick1
Brick2: alice003:/mnt/brick1
Options Reconfigured:
cluster.granular-entry-heal: on
storage.fips-mode-rchecksum: on
transport.address-family: inet
nfs.disable: on
performance.client-io-threads: off
[root@alice003 ~]# mkdir /infra_volume
[root@alice003 ~]# mount -t glusterfs 127.0.0.1:/g_volume /infra_volume
[root@alice003 ~]# df -h 
Filesystem           Size  Used Avail Use% Mounted on
/dev/vda1             20G   11G  8.2G  57% /
devtmpfs             909M     0  909M   0% /dev
tmpfs                920M     0  920M   0% /dev/shm
tmpfs                920M  1.6M  918M   1% /run
tmpfs                920M     0  920M   0% /sys/fs/cgroup
tmpfs                184M     0  184M   0% /run/user/0
/dev/vdc1             20G   33M   20G   1% /mnt
127.0.0.1:/g_volume   20G  238M   20G   2% /infra_volume
[root@alice003 ~]# ls /infra_volume
1.txt  2.txt  3.txt  4.txt  5.txt  6.txt
[root@alice003 ~]# ls /mnt/brick1/
1.txt  2.txt  3.txt  4.txt  5.txt  6.txt
[root@alice003 ~]#