centos7 搭建GlusterFS

centos7 搭建GlusterFS

转载http://zhaijunming5.blog.51cto.com/10668883/1704535

实验需求：
4台机器安装GlusterFS组成一个集群

4个节点的硬盘空间不整合成一个硬盘空间，要求每个节点都存储一份，保证数据安全

环境规划
server
node1:192.168.0.165 主机名:glusterfs1
node2:192.168.0.157 主机名:glusterfs2
node3:192.168.0.166 主机名:glusterfs3
node4:192.168.0.150 主机名:glusterfs4

client
192.168.0.164 主机名:master3

实验前准备
所有主机关闭防火墙，SElinux
修改hosts文件，能够互相解析

192.168.0.165 glusterfs1
192.168.0.157 glusterfs2
192.168.0.166 glusterfs3
192.168.0.150 glusterfs4
192.168.0.164 master3
安装
服务端
1.在glusterfs {1-4}节点上安装GlusrerFS软件包
# wget -P /etc/yum.repos.d http://download.gluster.org/pub/gluster/glusterfs/LATEST/EPEL.repo/glusterfs-epel.repo
# yum install -y glusterfs glusterfs-server glusterfs-fuse

出现librcu的错误需要安装
userspace-rcu-0.7.9-1.el7.x86_64
# service glusterd start
# chkconfig glusterd on

2.在glusterfs1节点上配置整个GlusterFS集群，把各个节点加入到集群

[root@glusterfs1 ~]# gluster peer probe glusterfs1
1 peer probe： success： on localhost not needed
[root@glusterfs1 ~]# gluster peer probe glusterfs2
1 peer probe： success
[root@glusterfs1 ~]# gluster peer probe glusterfs2
1 peer probe： success
[root@glusterfs1 ~]# gluster peer probe glusterfs2
　1 peer probe： success

3.查看节点状态
[root@glusterfs1 ~]#gluster peer status

4.在glusterfs{1-4}上创建数据存储目录
# mkdir -p /usr/local/share/models

5.查看卷
[root@glusterfs1 ~]# gluster volume info

Volume Name: models
Type: Distribute
Volume ID: b81587ff-5dd6-49b9-b46b-afe5df38d8c7
Status: Started
Number of Bricks: 4
Transport-type: tcp
Bricks:
Brick1: glusterfs1:/usr/local/share/models
Brick2: glusterfs2:/usr/local/share/models
Brick3: glusterfs3:/usr/local/share/models
Brick4: glusterfs4:/usr/local/share/models
Options Reconfigured:
performance.readdir-ahead: on

5.在glusterfs1上创建GlusterFS磁盘
注意：
加上replica 4就是4个节点中，每个节点都要把数据存储一次，就是一个数据存储4份，每个节点一份
如果不加replica 4，就是4个节点的磁盘空间整合成一个硬盘，

[root@glusterfs1 ~]#gluster volume create models replica 4 glusterfs1:/usr/local/share/models glusterfs2:/usr/local/share/models glusterfs3:/usr/local/share/models glusterfs4:/usr/local/share/models force
1 volume create： models： success： please start the volume to access data


6.启动
[root@glusterfs1 ~]# gluster volume start models

客户端
1.部署GlusterFS客户端并mount GlusterFS文件系统
[root@master3 ~]# wget -P /etc/yum.repos.d http://download.gluster.org/pub/gluster/glusterfs/LATEST/EPEL.repo/glusterfs-epel.repo
[root@master3 ~]# yum install -y glusterfs glusterfs-fuse
[root@master3 ~]# mkdir -p /mnt/models
[root@master3 ~]# mount -t glusterfs -o ro glusterfs1:models /mnt/models/
#加上 -o ro 的意思是 只读

2.查看效果

[root@master3 ~]#df -h
Filesystem Size Used Avail Use% Mounted on
/dev/vda3 289G 5.6G 284G 2% /
devtmpfs 3.9G 0 3.9G 0% /dev
tmpfs 3.9G 80K 3.9G 1% /dev/shm
tmpfs 3.9G 169M 3.7G 5% /run
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/vda1 1014M 128M 887M 13% /boot
glusterfs1:models 189G 3.5G 186G 2% /mnt/models

其他操作命令
删除GlusterFS磁盘

# gluster volume stop models #先停止
# gluster volume delete models #再删除

卸载GlusterFS磁盘
gluster peer detach glusterfs4

ACL访问控制
gluster volume set models auth.allow 10.60.1.*,10.70.1.*

添加GlusterFS节点
# gluster peer probe sc2-log5
# gluster peer probe sc2-log6
# gluster volume add-brick models sc2-log5:/data/gluster sc2-log6:/data/gluster

迁移GlusterFS数据
# gluster volume remove-brick models sc2-log1:/usr/local/share/models sc2-log5:/usr/local/share/models start
# gluster volume remove-brick models sc2-log1:/usr/local/share/models sc2-log5:/usr/local/share/models status
# gluster volume remove-brick models sc2-log1:/usr/local/share/models sc2-log5:/usr/local/share/models commit

修复GlusterFS数据(在节点1宕机的情况下)
# gluster volume replace-brick models sc2-log1:/usr/local/share/models sc2-log5:/usr/local/share/models commit -force
# gluster volume heal models full