MFS文件系统的组成
1、 元数据服务器。在整个体系中负责管理管理文件系统，目前MFS只支持一个元数据服务器master，这是一个单点故障，需要一个性能稳定的服务器来充当。希望今后MFS能支持多个master服务器，进一步提高系统的可靠性。
2、 数据存储服务器chunkserver。真正存储用户数据的服务器。存储文件时，首先把文件分成块，然后这些块在数据服务器chunkserver之间复制（复制份数可以手工指定，建议设置副本数为3）。数据服务器可以是多个，并且数量越多，可使用的“磁盘空间”越大，可靠性也越高。
3、 元数据日志服务器Metalogger server(Metalogger)：负责备份master服务器的变化日志文件，文件类型为changelog_ml.*.mfs，以便于在master server出问题的时候接替其进行工作。
4、 客户端。使用MFS文件系统来存储和访问的主机称为MFS的客户端，成功挂接MFS文件系统以后，就可以像以前使用NFS一样共享这个虚拟性的存储了。
环境：mfsmaster：192.168.50.119
mfschunk，mfslogger，mfsclient: 192.168.50.120
一、mfsmaster安装配置
1.创建安装用户
useraddmfs -s /sbin/nologin |
2.安装
tar -xf mfs-1.6.27-5.tar.gz && cd mfs-1.6.27./configure --prefix=/usr/local/mfs --with-default-user=mfs --with-default-group=mfsmake && make install |
3.配置文件
cd /usr/local/mfs/etc/mfs/cp mfsmaster.cfg.dist mfsmaster.cfgcp mfsexports.cfg.dist mfsexports.cfgcp /usr/local/mfs/var/mfs/metadata.mfs.empty /usr/local/mfs/var/mfs/metadata.mfs |
4.启动元数据服务器
/usr/local/mfs/sbin/mfsmaster startworking directory: /usr/local/mfs/var/mfslockfile created and lockedinitializing mfsmaster modules ...loading sessions ... oksessions file has been loadedexports file has been loadedmfstopology configuration file (/usr/local/mfs/etc/mfstopology.cfg) not found - using defaultsloading metadata ...loading objects (files,directories,etc.) ... okloading names ... okloading deletion timestamps ... okloading chunks data ... okchecking filesystem consistency ... okconnecting files and chunks ... okall inodes: 1directory inodes: 1file inodes: 0chunks: 0metadata file has been loadedstats file has been loadedmaster <-> metaloggers module: listen on *:9419master <-> chunkservers module: listen on *:9420main master server module: listen on *:9421mfsmaster daemon initialized properly |
5.启动web页面
/usr/local/mfs/sbin/mfscgiserv start #开启WEB监控页面进程http://ip:9425查看mfs系统状态 |
6.开机启动
echo "/usr/local/mfs/sbin/mfsmaster start" /etc/rc.localecho "/usr/local/mfs/sbin/mfscgiserv" /etc/rc.local |
7.检查进程
[root@localhost mfs]# ps -ef | grep mfsmfs 6556 1 0 03:20 ? 00:00:04 /usr/local/mfs/sbin/mfsmaster startroot 6582 1 0 03:23 ? 00:00:00 python /usr/local/mfs/sbin/mfscgiservroot 6625 1692 0 04:39 pts/0 00:00:00 grep ifs |
二、mfschunk，mfslogger，mfsclient服务器配置 1.创建安装用户
useraddmfs -s /sbin/nologin |
2.安装
yum -y install fuse fuse-develtar -xf mfs-1.6.27-5.tar.gz && cd mfs-1.6.27./configure --prefix=/usr/local/mfs --with-default-user=mfs --with-default-group=mfs --enable-mfsmountmake && make installchown -R mfs.mfs /usr/local/mfs/ |
3.配置文件
cd /usr/local/mfs/etc/mfs/cp mfschunkserver.cfg.dist mfschunkserver.cfgcp mfshdd.cfg.dist mfshdd.cfgcp mfsmetalogger.cfg.dist mfsmetalogger.cfg |
4.修改配置文件
[root@localhost mfs]# cat mfschunkserver.cfg# WORKING_USER = mfs# WORKING_GROUP = mfs# SYSLOG_IDENT = mfschunkserver# LOCK_MEMORY = 0# NICE_LEVEL = -19# DATA_PATH = /usr/local/mfs/var/mfs# MASTER_RECONNECTION_DELAY = 5# BIND_HOST = *MASTER_HOST = 192.168.50.119MASTER_PORT = 9420# MASTER_TIMEOUT = 60# CSSERV_LISTEN_HOST = *# CSSERV_LISTEN_PORT = 9422# HDD_CONF_FILENAME = /usr/local/mfs/etc/mfs/mfshdd.cfg# HDD_TEST_FREQ = 10# deprecated, to be removed in MooseFS 1.7# LOCK_FILE = /var/run/mfs/mfschunkserver.lock# BACK_LOGS = 50# CSSERV_TIMEOUT = 5 |
[root@localhost mfs]# cat mfshdd.cfg# mount points of HDD drives/usr/local/mfsdata/ #mfschunkserver上的分区，必须是独立分区！ |
[root@localhost mfs]# cat mfsmetalogger.cfg# WORKING_USER = mfs# WORKING_GROUP = mfs# SYSLOG_IDENT = mfsmetalogger# LOCK_MEMORY = 0# NICE_LEVEL = -19# DATA_PATH = /usr/local/mfs/var/mfs# BACK_LOGS = 50# BACK_META_KEEP_PREVIOUS = 3META_DOWNLOAD_FREQ = 1# MASTER_RECONNECTION_DELAY = 5MASTER_HOST = 192.168.50.119MASTER_PORT = 9419# MASTER_TIMEOUT = 60# deprecated, to be removed in MooseFS 1.7# LOCK_FILE = /var/run/mfs/mfsmetalogger.lock |
5.启动服务
[root@localhost mfs]# /usr/local/mfs/sbin/mfschunkserver startworking directory: /usr/local/mfs/var/mfslockfile created and lockedinitializing mfschunkserver modules ...hdd space manager: path to scan: /usr/local/mfsdata/hdd space manager: start background hdd scanning (searching for available chunks)main server module: listen on *:9422no charts data file - initializing empty chartsmfschunkserver daemon initialized properly |
[root@localhost mfs]# /usr/local/mfs/sbin/mfsmetalogger startworking directory: /usr/local/mfs/var/mfslockfile created and lockedinitializing mfsmetalogger modules ...mfsmetalogger daemon initialized properly |
6.创建数据目录
mkdir /usr/local/mfsdata/chown -R mfs.mfs /usr/local/mfsdata/ |
这里需要一块新磁盘挂载到数据目录
mount /dev/sdb1 /usr/local/mfsdata/ |
7.创建挂载目录
mkdir /mnt/mfschown -R mfs.mfs /mnt/mfs/ |
8.挂载目录
[root@localhost mfsdata]# /usr/local/mfs/bin/mfsmount /mnt/mfs/ -H 192.168.50.119 #挂载成功mfsmaster accepted connection with parameters: read-write,restricted_ip ; root mapped to root:root |
