Glusterfs 文件系统

时间:2022-05-03
本文章向大家介绍Glusterfs 文件系统，主要内容包括Glusterfs、1. Host、2. Storage bricks、3. Server、4. Check brick nodes、5. Client、6. Other、基本概念、基础应用、原理机制和需要注意的事项等，并结合实例形式分析了其使用技巧，希望通过本文能帮助到大家理解应用这部分内容。

Glusterfs

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Table of Contents

  • 1. Host
  • 2. Storage bricks
  • 3. Server
  • 4. Check brick nodes
  • 5. Client
    • 5.1. /etc/fstab
  • 6. Other

1. Host

# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6

192.168.6.12	client1.example.com client1
192.168.6.13	server.example.com server

192.168.6.1	brick1.example.com brick1
192.168.2.1	brick2.example.com brick2

2. Storage bricks

brick1, brick2

Install Gluster packages on both nodes

wget http://download.gluster.org/pub/gluster/glusterfs/3.5/3.5.2/CentOS/glusterfs-epel.repo -P /etc/yum.repos.d/
yum install -y glusterfs-server
chkconfig glusterd on
service glusterd start
service iptables stop		
mkdir /opt/export

3. Server

Install Gluster packages on server nodes

wget http://download.gluster.org/pub/gluster/glusterfs/3.5/3.5.2/CentOS/glusterfs-epel.repo -P /etc/yum.repos.d/
yum install -y glusterfs-server
chkconfig glusterd on
service glusterd start

Run the gluster peer probe command

# gluster peer probe brick1.example.com
peer probe: success. 
# gluster peer probe brick2.example.com
peer probe: success. 
# gluster peer status
Number of Peers: 2

Hostname: brick1.example.com
Uuid: c8acab33-ed6a-4aa5-8b77-5be84695ffce
State: Peer in Cluster (Connected)

Hostname: brick2.example.com
Uuid: bf309355-7444-48e4-a7ea-25223c771160
State: Peer in Cluster (Connected)

Configure your Gluster volume

# gluster volume create testvol replica 2 transport tcp brick1.example.com:/opt/export brick2.example.com:/opt/export
volume create: testvol: success: please start the volume to access data		
# gluster volume start testvol
volume start: testvol: success		
# gluster volume info
 
Volume Name: testvol
Type: Replicate
Volume ID: cd4cdf2f-178b-4160-9ee9-c579266753de
Status: Started
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: brick1.example.com:/opt/export
Brick2: brick2.example.com:/opt/export		
# gluster volume set testvol auth.allow client.example.com
volume set: success		
# gluster volume info
 
Volume Name: testvol
Type: Replicate
Volume ID: cd4cdf2f-178b-4160-9ee9-c579266753de
Status: Started
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: brick1.example.com:/opt/export
Brick2: brick2.example.com:/opt/export
Options Reconfigured:
auth.allow: client.example.com

4. Check brick nodes

netstat -tap | grep glusterfsd

# netstat -tap | grep glusterfsd
tcp        0      0 *:49152                     *:*                         LISTEN      13841/glusterfsd    
tcp        0      0 brick1.example.com:49152     brick1.example.com:1014      ESTABLISHED 13841/glusterfsd    
tcp        0      0 brick1.example.com:exp1      brick1.example.com:24007     ESTABLISHED 13841/glusterfsd    
tcp        0      0 brick1.example.com:49152     brick2.example.com:1011      ESTABLISHED 13841/glusterfsd    
tcp        0      0 brick1.example.com:49152     brick2.example.com:1012      ESTABLISHED 13841/glusterfsd    
tcp        0      0 brick1.example.com:49152     server.example.com:1017     ESTABLISHED 13841/glusterfsd    
tcp        0      0 brick1.example.com:49152     brick1.example.com:1020      ESTABLISHED 13841/glusterfsd

5. Client

Install Gluster packages on client nodes

wget http://download.gluster.org/pub/gluster/glusterfs/3.5/3.5.2/CentOS/glusterfs-epel.repo -P /etc/yum.repos.d/
yum install -y glusterfs-client

Test using the volume

mkdir /mnt/glusterfs
mount.glusterfs server.example.com:/testvol /mnt/glusterfs

Add an entry to /etc/fstab

server1.example.com:/testvol /mnt/glusterfs glusterfs defaults,_netdev 0 0		
# mount
/dev/vda1 on / type ext4 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
tmpfs on /dev/shm type tmpfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
server.example.com:/testvol on /mnt/glusterfs type fuse.glusterfs (rw,default_permissions,allow_other,max_read=131072)		

# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/vda1              38G  2.3G   34G   7% /
tmpfs                 939M     0  939M   0% /dev/shm
server.example.com:/testvol
                      477G  359G  101G  79% /mnt/glusterfs		
# touch /mnt/glusterfs/hello
# ll /mnt/glusterfs/
total 0
-rw-r--r-- 1 root root 0 Sep 23 14:31 hello

brick1

# ll /opt/export/
total 0
-rw-r--r-- 2 root root 0 Sep 23 14:31 hello

brick2

# ll /opt/export/
total 0
-rw-r--r-- 2 root root 0 Sep 23 14:31 hello

5.1. /etc/fstab

Add an entry to /etc/fstab

server1.example.com:/testvol /mnt/glusterfs glusterfs defaults,_netdev 0 0

6. Other

stop volume

# gluster volume stop testvol
Stopping volume will make its data inaccessible. Do you want to continue? (y/n) y
volume stop: testvol: success

delete volume

# gluster volume delete testvol
Deleting volume will erase all information about the volume. Do you want to continue? (y/n) y
volume delete: testvol: success		
# gluster peer datach brick1.example.com		
# gluster volume remove-brick testvol brick1.example.com:/export/u01

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