centos7 搭建GlusterFS
实验需求：·4台机器安装GlusterFS组成一个集群
·客户端把docker registry存储到文件系统里
·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
192.168.0.165glusterfs1
192.168.0.157glusterfs2
192.168.0.166glusterfs3
192.168.0.150glusterfs4
192.168.0.164master3 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
# serviceglusterd 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
# gluster peer probe glusterfs1
1 peer probe： success： on localhost not needed
# gluster peer probe glusterfs2
1 peer probe： success
# gluster peer probe glusterfs2
1 peer probe： success
# gluster peer probe glusterfs2
1 peer probe： success 3.查看节点状态
#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
# 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，
#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
# gluster volume start models 客户端
1.部署GlusterFS客户端并mount GlusterFS文件系统
# wget -P /etc/yum.repos.d http://download.gluster.org/pub/gluster/glusterfs/LATEST/EPEL.repo/glusterfs-epel.repo
# yum install -y glusterfs glusterfs-fuse
# mkdir -p /mnt/models
# mount -t glusterfs -o ro glusterfs1:models /mnt/models/
#加上 -o ro 的意思是 只读 2.查看效果
#df -h
Filesystem SizeUsed Avail Use% Mounted on
/dev/vda3 289G5.6G284G 2% /
devtmpfs 3.9G 03.9G 0% /dev
tmpfs 3.9G 80K3.9G 1% /dev/shm
tmpfs 3.9G169M3.7G 5% /run
tmpfs 3.9G 03.9G 0% /sys/fs/cgroup
/dev/vda1 1014M128M887M13% /boot
glusterfs1:models189G3.5G186G 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
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