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1. 背景
GlusterFS 是一個開源的分布式文件系統(tǒng)，具有強大的橫向擴展能力，通過擴展能夠支持數(shù)PB存儲容量和處理數(shù)千客戶端。GlusterFS借助TCP/IP或InfiniBand RDMA(一種支持多并發(fā)鏈接的“轉(zhuǎn)換線纜”技術(shù))網(wǎng)絡(luò)將物理分布的存儲資源聚集在一起，使用單一全局命名空間來管理數(shù)據(jù)。GlusterFS基于可堆疊的用戶空間設(shè)計，可為各種不同的數(shù)據(jù)負載提供優(yōu)異的性能。
GlusterFS支持運行在任何標準IP網(wǎng)絡(luò)上標準應(yīng)用程序的標準客戶端
2. 優(yōu)勢
* 線性橫向擴展和高性能
* 高可用性
* 全局統(tǒng)一命名空間
* 彈性哈希算法和彈性卷管理
* 基于標準協(xié)議
* 完全軟件實現(xiàn)（Software Only）
* 用戶空間實現(xiàn)（User Space）
* 模塊化堆棧式架構(gòu)（Modular Stackable Architecture）
* 原始數(shù)據(jù)格式存儲（Data Stored in Native Formats）
* 無元數(shù)據(jù)服務(wù)設(shè)計（No Metadata with the Elastic Hash Algorithm）
3. 環(huán)境
server_1 CentOS 7.2.1511 (Core) 192.168.60.201
server_2 CentOS 7.2.1511 (Core) 192.168.60.202
4. 安裝
* server_1 安裝centos-release-gluster
[root@server_1 ~]# yum install centos-release-gluster -y
* server_1 安裝 glusterfs-server
[root@server_1 ~]# yum install glusterfs-server -y
* server_1 啟動 glusterfs-server 服務(wù)
[root@server_1 ~]# systemctl start glusterd
* server_2 安裝centos-release-gluster
[root@server_2 ~]# yum install centos-release-gluster -y
* server_2 安裝 glusterfs-server
[root@server_2 ~]# yum install glusterfs-server -y
* server_2 啟動 glusterfs-server 服務(wù)
[root@server_2 ~]# systemctl start glusterd
5. 建立信任池 [ 信任單向建立即可 ]
* server_1 對 server_2 建立信任
[root@server_1 ~]# gluster peer probe 192.168.60.202 peer probe: success.
* 查看信任池建立情況
[root@server_1 ~]# gluster peer status Number of Peers: 1 Hostname: 192.168.60.202 Uuid: 84d98fd8-4500-46d3-9d67-8bafacb5898b State: Peer in Cluster (Connected) [root@server_2 ~]# gluster peer status Number of Peers: 1 Hostname: 192.168.60.201 Uuid: 20722daf-35c4-422c-99ff-6b0a41d07eb4 State: Peer in Cluster (Connected)
6. 創(chuàng)建分布式卷
* server_1 和 server_2 創(chuàng)建數(shù)據(jù)存放目錄
[root@server_1 ~]# mkdir -p /data/exp1 [root@server_2 ~]# mkdir -p /data/exp2
* 使用命令創(chuàng)建分布式卷，命名為test-volume
[root@server_1 ~]# gluster volume create test-volume 192.168.60.201:/data/exp1 192.168.60.202:/data/exp2 force volume create: test-volume: success: please start the volume to access data
* 查看卷信息
[root@server_1 ~]# gluster volume info test-volume Volume Name: test-volume Type: Distribute Volume ID: 457ca1ff-ac55-4d59-b827-fb80fc0f4184 Status: Created Snapshot Count: 0 Number of Bricks: 2 Transport-type: tcp Bricks: Brick1: 192.168.60.201:/data/exp1 Brick2: 192.168.60.202:/data/exp2 Options Reconfigured: transport.address-family: inet nfs.disable: on [root@server_2 ~]# gluster volume info test-volume Volume Name: test-volume Type: Distribute Volume ID: 457ca1ff-ac55-4d59-b827-fb80fc0f4184 Status: Created Snapshot Count: 0 Number of Bricks: 2 Transport-type: tcp Bricks: Brick1: 192.168.60.201:/data/exp1 Brick2: 192.168.60.202:/data/exp2 Options Reconfigured: transport.address-family: inet nfs.disable: on
* 啟動卷
[root@server_1 ~]# gluster volume start test-volume volume start: test-volume: success
7. 創(chuàng)建復(fù)制卷 [ 對比Raid 1 ]
* server_1 和 server_2 創(chuàng)建數(shù)據(jù)存放目錄
[root@server_1 ~]# mkdir -p /data/exp3 [root@server_2 ~]# mkdir -p /data/exp4
* 使用命令創(chuàng)建復(fù)制卷，命名為repl-volume
[root@server_1 ~]# gluster volume create repl-volume replica 2 transport tcp 192.168.60.201:/data/exp3 192.168.60.202:/data/exp4 force volume create: repl-volume: success: please start the volume to access data
* 查看卷信息
[root@server_1 ~]# gluster volume info repl-volume Volume Name: repl-volume Type: Replicate Volume ID: 1924ed7b-73d4-45a9-af6d-fd19abb384cd Status: Created Snapshot Count: 0 Number of Bricks: 1 x 2 = 2 Transport-type: tcp Bricks: Brick1: 192.168.60.201:/data/exp3 Brick2: 192.168.60.202:/data/exp4 Options Reconfigured: transport.address-family: inet nfs.disable: on [root@server_2 ~]# gluster volume info repl-volume Volume Name: repl-volume Type: Replicate Volume ID: 1924ed7b-73d4-45a9-af6d-fd19abb384cd Status: Created Snapshot Count: 0 Number of Bricks: 1 x 2 = 2 Transport-type: tcp Bricks: Brick1: 192.168.60.201:/data/exp3 Brick2: 192.168.60.202:/data/exp4 Options Reconfigured: transport.address-family: inet nfs.disable: on
* 啟動卷
[root@server_1 ~]# gluster volume start repl-volume volume start: repl-volume: success
8. 創(chuàng)建條帶卷 [ 對比Raid 0 ]
* server_1 和 server_2 創(chuàng)建數(shù)據(jù)存放目錄
[root@server_1 ~]# mkdir -p /data/exp5 [root@server_2 ~]# mkdir -p /data/exp6
* 使用命令創(chuàng)建復(fù)制卷，命名為raid0-volume
[root@server_1 ~]# gluster volume create raid0-volume stripe 2 transport tcp 192.168.60.201:/data/exp5 192.168.60.202:/data/exp6 force volume create: raid0-volume: success: please start the volume to access data
* 查看卷信息
[root@server_1 ~]# gluster volume info raid0-volume Volume Name: raid0-volume Type: Stripe Volume ID: 13b36adb-7e8b-46e2-8949-f54eab5356f6 Status: Created Snapshot Count: 0 Number of Bricks: 1 x 2 = 2 Transport-type: tcp Bricks: Brick1: 192.168.60.201:/data/exp5 Brick2: 192.168.60.202:/data/exp6 Options Reconfigured: transport.address-family: inet nfs.disable: on [root@server_2 ~]# gluster volume info raid0-volume Volume Name: raid0-volume Type: Stripe Volume ID: 13b36adb-7e8b-46e2-8949-f54eab5356f6 Status: Created Snapshot Count: 0 Number of Bricks: 1 x 2 = 2 Transport-type: tcp Bricks: Brick1: 192.168.60.201:/data/exp5 Brick2: 192.168.60.202:/data/exp6 Options Reconfigured: transport.address-family: inet nfs.disable: on
* 啟動卷
[root@server_1 ~]# gluster volume start raid0-volume volume start: raid0-volume: success
9. 客戶端應(yīng)用
* 安裝glusterfs-cli
[root@client ~]# yum install glusterfs-cli -y
* 創(chuàng)建掛載目錄
[root@client ~]# mkdir /mnt/g1 /mnt/g2 /mnt/g3
* 掛載卷
[root@server_1 ~]# mount.glusterfs 192.168.60.201:/test-volume /mnt/g1 [root@server_1 ~]# mount.glusterfs 192.168.60.202:/repl-volume /mnt/g2 [root@server_1 ~]# mount.glusterfs 192.168.60.201:/raid0-volume /mnt/g3
10. 擴展卷
* 創(chuàng)建存放目錄
[root@server_1 ~]# mkdir -p /data/exp9
* 擴展卷
[root@server_1 ~]# gluster volume add-brick test-volume 192.168.60.201:/data/exp9 force volume add-brick: success
* 重新均衡
[root@server_1 ~]# gluster volume rebalance test-volume start volume rebalance: test-volume: success: Rebalance on test-volume has been started successfully. Use rebalance status command to check status of the rebalance process. ID: 008c3f28-d8a1-4f05-b63c-4543c51050ec
11. 總結(jié)
以需求驅(qū)動技術(shù)，技術(shù)本身沒有優(yōu)略之分，只有業(yè)務(wù)之分。
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