CentOS7環(huán)境下搭建MFS分布式文件系統(tǒng)

MFS原理

    MFS是一個具有容錯性的網(wǎng)絡分布式文件系統(tǒng)，它把數(shù)據(jù)分散存放在多個物理服務器上，而呈現(xiàn)給用戶的則是一個統(tǒng)一的資源。

MFS文件系統(tǒng)組成介紹

MFS文件系統(tǒng)組成圖示

MFS讀取數(shù)據(jù)處理過程：

• Client向Master發(fā)出讀請求

• Master把所需的數(shù)據(jù)存放位置（Chunk IP&Chunk No.）告知Client

• Client向Chunk發(fā)送數(shù)據(jù)請求

• Chunk向Client發(fā)送數(shù)據(jù)

MFS寫入數(shù)據(jù)處理過程：

• Client向Master發(fā)出寫入請求

• Master與Chunk進行交互，但Master只在某些服務器創(chuàng)建新的分塊Chunks，創(chuàng)建成功后由Chunk告知Master創(chuàng)建成功

• Master告知Client可以在哪個Chunk的哪些Chunks寫入數(shù)據(jù)

• Client向指定的Chunk寫入數(shù)據(jù)

• Chunk與其他Chunk進行數(shù)據(jù)同步，同步成功后Chunk告知Client寫入數(shù)據(jù)成功

• Client告知Master本次寫入完畢

實驗環(huán)境介紹：

192.168.218.156

實驗步驟：

安裝master server:

yum install gcc gcc-c++ zlib-devel -y

useradd -s /sbin/nologin mfs

tar zxvf mfs-1.6.27-5.tar.gz -C /opt

cd /opt/mfs-1.6.27/

./configure \

--prefix=/usr/local/mfs \

--with-default-user=mfs \

--with-default-group=mfs \

--disable-mfschunkserver \                 #禁用Chunk功能

--disable-mfsmount                         #禁用Client功能

make && make install

cd /usr/local/mfs/etc/mfs/

cp mfsexports.cfg.dist mfsexports.cfg         #使掛載權限配置文件生效

cp mfsmaster.cfg.dist mfsmaster.cfg             #使master主配置文件生效

cp mfstopology.cfg.dist mfstopology.cfg        #使拓撲架構感知配置文件生效

cd /usr/local/mfs/var/mfs/

cp metadata.mfs.empty metadata.mfs          # 使防斷鏈文件生效

/usr/local/mfs/sbin/mfsmaster start

systemctl stop firewalld.service

setenforce 0

netstat -ntap | grep mfs

#/usr/local/mfs/sbin/mfsmaster –s     #停止服務

搭建MetaLogger server:

yum install gcc gcc-c++ zlib-devel -y

useradd -s /sbin/nologin mfs

tar zxvf mfs-1.6.27-5.tar.gz -C /opt

cd /opt/mfs-1.6.27/

./configure \

--prefix=/usr/local/mfs \

--with-default-user=mfs \

--with-default-group=mfs \

--disable-mfschunkserver \      

--disable-mfsmount                 

make && make install

cd /usr/local/mfs/etc/mfs/

cp mfsmetalogger.cfg.dist mfsmetalogger.cfg          #使日志配置文件生效

vim mfsmetalogger.cfg

          MASTER_HOST = 192.168.218.130               #指定Master服務器地址

cd /usr/local/mfs/var/mfs/

cp metadata.mfs.empty metadata.mfs           #使防斷鏈文件生效

/usr/local/mfs/sbin/mfsmaster start

systemctl stop firewalld.service

setenforce 0

搭建兩臺Chunk服務器:

yum install gcc gcc-c++ zlib-devel -y

useradd -s /sbin/nologin mfs

tar zxvf mfs-1.6.27-5.tar.gz -C /opt

cd /opt/mfs-1.6.27/

./configure \

--prefix=/usr/local/mfs \

--with-default-user=mfs \

--with-default-group=mfs \

--disable-mfsmaster \

--disable-mfsmount

make && make install

cd /usr/local/mfs/etc/mfs/

cp mfschunkserver.cfg.dist mfschunkserver.cfg         #使chunk配置文件生效

cp mfshdd.cfg.dist mfshdd.cfg         #使硬盤提供存儲空間配置文件生效

vim mfschunkserver.cfg

            MASTER_HOST = 192.168.218.130

vim mfshdd.cfg

            /data

mkdir /data

chown -R mfs.mfs /data/

/usr/local/mfs/sbin/mfschunkserver start     #啟動服務

systemctl stop firewalld.service

setenforce 0

netstat -ntap | grep mfs

Client配置

systemctl stop firewalld.service

setenforce 0

yum install gcc gcc-c++ zlib-devel -y

tar zxvf fuse-2.9.2.tar.gz -C /opt      #內(nèi)核加載包

cd /opt/fuse-2.9.2/

./configure

make && make install

vim /etc/profile

           export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:$PKG_CONFIG_PATH

source /etc/profile

安裝mfs客戶端

useradd -s /sbin/nologin mfs

tar zxvf mfs-1.6.27-5.tar.gz -C /opt

cd /opt/mfs-1.6.27/

./configure \

--prefix=/usr/local/mfs \

--with-default-user=mfs \

--with-default-group=mfs \

--disable-mfsmaster \

--disable-mfschunkserver \

--enable-mfsmount

make && make install

mkdir /opt/mfs

modprobe fuse   #加載fuse模塊到內(nèi)核

/usr/local/mfs/bin/mfsmount /opt/mfs -H 192.168.218.130 #掛載MFS服務

優(yōu)化客服端

vim /etc/profile

export PATH=/usr/local/mfs/bin:$PATH

source /etc/profile

echo 'this is test!' > /opt/mfs/abc.txt

mfssetgoal -r 2 /opt/mfs      #設置文件被復制的份數(shù)，-r表示遞歸

        /opt/mfs:

            inodes with goal changed: 2

            inodes with goal not changed: 0

            inodes with permission denied: 0

mfsgetgoal -r /opt/mfs         #查看復制文件的份數(shù)

        /opt/mfs/abc.txt: 2

mfsfileinfo /opt/mfs/abc.txt #查看實際副本份數(shù)及其所在的節(jié)點

        /opt/mfs/abc.txt:

              chunk 0: 0000000000000001_00000001 / (id:1 ver:1)

              copy 1: 192.168.218.145:9422

              copy 2: 192.168.218.156:9422

MASTER-Server----------------啟動監(jiān)控程序

[root@master mfs]# /usr/local/mfs/sbin/mfscgiserv

          lockfile created and locked

          starting simple cgi server (host: any , port: 9425 , rootpath: /usr/local/mfs/share/mfscgi)

訪問：http://192.168.218.130:9425查看MFS監(jiān)控網(wǎng)頁