分布式文件系统之MogileFS的安装使用
tracker的主要作用是代理前端用户的请求到数据库查询相关文件的元信息，同时它还要监控注册到tracker的storagenode的健康状态，一旦后端storage挂掉，它会立刻把对应的storage节点上的device从集群信息中删除（对应数据还在，只是在集群的状态信息看不到对应设备），上线时再加入到集群信息；客户端通过向tracker发送请求文件的信息，tracker通过去数据库中找到对应的文件所在storage节点的ip地址、端口、设备id以及文件fid，然后通过http链接的形式从tracker返回给客户端，客户端拿到这tracker的返回的文件地址，然后在去对应的storage请求文件，从而在客户端就访问到对应的文件内容信息；
一、简介
MogileFS是一个开源的分布式文件存储系统，由LiveJournal旗下的Danga Interactive公司开发；它主要由三部分组成，第一部分是server端，server端主要包括mogilefsd和mogstored两个应用程序。mogilefsd实现的是tracker，它通过数据库来保存元数据信息，包括站点domain、class、host等；mogstored是存储节点(store node)，它其实是个WebDAV服务，默认监听在7500端口，接受客户端的文件存储请求。在MogileFS安装完后，要运行mogadm工具将所有的store node注册到mogilefsd的数据库里，mogilefsd会对这些节点进行管理和监控。第二部是mogilefs的utils,这部分主要是一些工具，比如mogadm、mogupload、mogfileinfo 等等；第三部分是客户端API，mogilefs支持众多编程语言的客户端API接口，使用对应的客户端API接口，我们可以编写mogilefs的客户端，从而实现来管理mogilefs上的文件；
二、Mogilefs架构图
提示：tracker的主要作用是代理前端用户的请求到数据库查询相关文件的元信息，同时它还要监控注册到tracker的storagenode的健康状态，一旦后端storage挂掉，它会立刻把对应的storage节点上的device从集群信息中删除（对应数据还在，只是在集群的状态信息看不到对应设备），上线时再加入到集群信息；客户端通过向tracker发送请求文件的信息，tracker通过去数据库中找到对应的文件所在storage节点的ip地址、端口、设备id以及文件fid，然后通过http链接的形式从tracker返回给客户端，客户端拿到这tracker的返回的文件地址，然后在去对应的storage请求文件，从而在客户端就访问到对应的文件内容信息；客户端和tracker，storage之间通信都是http协议，从本质上讲storage就是一个web服务器；所以对于客户端我们可以使用web服务器的反向代理，也可以是调用mogilefsAPI写的客户端程序；
三、Mogilefs安装部署
环境说明
| 名称 | 角色 | ip地址 | 端口 |
| node01 | tracker+mysql+storage | 192.168.0.41 | 7001/7500/7501/3306 |
| node02 | tracker+storage | 192.168.0.42 | 7001/7500/7501 |
| node03 | storage | 192.168.0.43 | 7500/7501 |
各server时间同步
提示：如果有必要，可以配置各节点用hosts文件解析；
安装环境依赖包
[root@node01 ~]# yum install perl-Net-Netmask perl-IO-stringy perl-Sys-Syslog perl-IO-AIO -y Loaded plugins: fastestmirror base | 3.6 kB 00:00:00 epel | 4.7 kB 00:00:00 extras | 2.9 kB 00:00:00 updates | 2.9 kB 00:00:00 Loading mirror speeds from cached hostfile * base: mirrors.aliyun.com * extras: mirrors.aliyun.com * updates: mirrors.aliyun.com Resolving Dependencies --> Running transaction check ---> Package perl-IO-AIO.x86_64 0:4.20-1.el7 will be installed --> Processing Dependency: perl(common::sense) for package: perl-IO-AIO-4.20-1.el7.x86_64 ---> Package perl-IO-stringy.noarch 0:2.110-22.el7 will be installed ---> Package perl-Net-Netmask.noarch 0:1.9015-13.el7 will be installed ---> Package perl-Sys-Syslog.x86_64 0:0.33-3.el7 will be installed --> Running transaction check ---> Package perl-common-sense.noarch 0:3.6-4.el7 will be installed --> Finished Dependency Resolution Dependencies Resolved ======================================================================================================================================= Package Arch Version Repository Size ======================================================================================================================================= Installing: perl-IO-AIO x86_64 4.20-1.el7 epel 117 k perl-IO-stringy noarch 2.110-22.el7 base 71 k perl-Net-Netmask noarch 1.9015-13.el7 epel 25 k perl-Sys-Syslog x86_64 0.33-3.el7 base 42 k Installing for dependencies: perl-common-sense noarch 3.6-4.el7 epel 28 k Transaction Summary ======================================================================================================================================= Install 4 Packages (+1 Dependent package) Total download size: 283 k Installed size: 636 k Downloading packages: (1/5): perl-Sys-Syslog-0.33-3.el7.x86_64.rpm | 42 kB 00:00:00 (2/5): perl-Net-Netmask-1.9015-13.el7.noarch.rpm | 25 kB 00:00:00 (3/5): perl-IO-AIO-4.20-1.el7.x86_64.rpm | 117 kB 00:00:00 (4/5): perl-common-sense-3.6-4.el7.noarch.rpm | 28 kB 00:00:00 (5/5): perl-IO-stringy-2.110-22.el7.noarch.rpm | 71 kB 00:00:00 --------------------------------------------------------------------------------------------------------------------------------------- Total 642 kB/s | 283 kB 00:00:00 Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : perl-common-sense-3.6-4.el7.noarch 1/5 Installing : perl-IO-AIO-4.20-1.el7.x86_64 2/5 Installing : perl-Net-Netmask-1.9015-13.el7.noarch 3/5 Installing : perl-Sys-Syslog-0.33-3.el7.x86_64 4/5 Installing : perl-IO-stringy-2.110-22.el7.noarch 5/5 Verifying : perl-IO-AIO-4.20-1.el7.x86_64 1/5 Verifying : perl-common-sense-3.6-4.el7.noarch 2/5 Verifying : perl-IO-stringy-2.110-22.el7.noarch 3/5 Verifying : perl-Sys-Syslog-0.33-3.el7.x86_64 4/5 Verifying : perl-Net-Netmask-1.9015-13.el7.noarch 5/5 Installed: perl-IO-AIO.x86_64 0:4.20-1.el7 perl-IO-stringy.noarch 0:2.110-22.el7 perl-Net-Netmask.noarch 0:1.9015-13.el7 perl-Sys-Syslog.x86_64 0:0.33-3.el7 Dependency Installed: perl-common-sense.noarch 0:3.6-4.el7 Complete! [root@node01 ~]#
提示：三个节点都需要安装环境依赖的包；
上传rpm包到服务器并安装
[root@node01 ~]# rz rz waiting to receive. zmodem trl+C ȡ 100% 1 KB 1 KB/s 00:00:01 0 Errors.el7.centos.noarch.rpm... 100% 173 KB 173 KB/s 00:00:01 0 Errorsentos.noarch.rpm... 100% 26 KB 26 KB/s 00:00:01 0 Errorsentos.noarch.rpm... 100% 75 KB 75 KB/s 00:00:01 0 Errorsh.rpm... 100% 27 KB 27 KB/s 00:00:01 0 Errors.rpm... 100% 29 KB 29 KB/s 00:00:01 0 Errors.noarch.rpm... 100% 262 KB 262 KB/s 00:00:01 0 Errors [root@node01 ~]# ls MogileFS-Server-2.46-2.el7.centos.noarch.rpm perl-Danga-Socket-1.61-1.el6.rf.noarch.rpm MogileFS-Server-mogilefsd-2.46-2.el7.centos.noarch.rpm perl-MogileFS-Client-1.14-1.el7.centos.noarch.rpm MogileFS-Server-mogstored-2.46-2.el7.centos.noarch.rpm perl-Perlbal-1.78-1.el6.noarch.rpm MogileFS-Utils-2.19-1.el7.centos.noarch.rpm [root@node01 ~]# yum install ./*.rpm -y Loaded plugins: fastestmirror Examining ./MogileFS-Server-2.46-2.el7.centos.noarch.rpm: MogileFS-Server-2.46-2.el7.centos.noarch Marking ./MogileFS-Server-2.46-2.el7.centos.noarch.rpm to be installed Examining ./MogileFS-Server-mogilefsd-2.46-2.el7.centos.noarch.rpm: MogileFS-Server-mogilefsd-2.46-2.el7.centos.noarch Marking ./MogileFS-Server-mogilefsd-2.46-2.el7.centos.noarch.rpm to be installed Examining ./MogileFS-Server-mogstored-2.46-2.el7.centos.noarch.rpm: MogileFS-Server-mogstored-2.46-2.el7.centos.noarch Marking ./MogileFS-Server-mogstored-2.46-2.el7.centos.noarch.rpm to be installed Examining ./MogileFS-Utils-2.19-1.el7.centos.noarch.rpm: MogileFS-Utils-2.19-1.el7.centos.noarch Marking ./MogileFS-Utils-2.19-1.el7.centos.noarch.rpm to be installed Examining ./perl-Danga-Socket-1.61-1.el6.rf.noarch.rpm: perl-Danga-Socket-1.61-1.el6.rf.noarch Marking ./perl-Danga-Socket-1.61-1.el6.rf.noarch.rpm to be installed Examining ./perl-MogileFS-Client-1.14-1.el7.centos.noarch.rpm: perl-MogileFS-Client-1.14-1.el7.centos.noarch Marking ./perl-MogileFS-Client-1.14-1.el7.centos.noarch.rpm to be installed Examining ./perl-Perlbal-1.78-1.el6.noarch.rpm: perl-Perlbal-1.78-1.el6.noarch Marking ./perl-Perlbal-1.78-1.el6.noarch.rpm to be installed Resolving Dependencies --> Running transaction check ---> Package MogileFS-Server.noarch 0:2.46-2.el7.centos will be installed ---> Package MogileFS-Server-mogilefsd.noarch 0:2.46-2.el7.centos will be installed --> Processing Dependency: perl(DBI) >= 1.44 for package: MogileFS-Server-mogilefsd-2.46-2.el7.centos.noarch Loading mirror speeds from cached hostfile * base: mirrors.aliyun.com * extras: mirrors.aliyun.com * updates: mirrors.aliyun.com --> Processing Dependency: perl(DBD::mysql) >= 3 for package: MogileFS-Server-mogilefsd-2.46-2.el7.centos.noarch ---> Package MogileFS-Server-mogstored.noarch 0:2.46-2.el7.centos will be installed ……省略部分内容…… Installed: MogileFS-Server.noarch 0:2.46-2.el7.centos MogileFS-Server-mogilefsd.noarch 0:2.46-2.el7.centos MogileFS-Server-mogstored.noarch 0:2.46-2.el7.centos MogileFS-Utils.noarch 0:2.19-1.el7.centos perl-Danga-Socket.noarch 0:1.61-1.el6.rf perl-MogileFS-Client.noarch 0:1.14-1.el7.centos perl-Perlbal.noarch 0:1.78-1.el6 Dependency Installed: mailcap.noarch 0:2.1.41-2.el7 perl-BSD-Resource.x86_64 0:1.29.07-1.el7 perl-Business-ISBN.noarch 0:2.06-2.el7 perl-Business-ISBN-Data.noarch 0:20120719.001-2.el7 perl-Compress-Raw-Bzip2.x86_64 0:2.061-3.el7 perl-Compress-Raw-Zlib.x86_64 1:2.061-4.el7 perl-DBD-MySQL.x86_64 0:4.023-6.el7 perl-DBI.x86_64 0:1.627-4.el7 perl-Data-Dumper.x86_64 0:2.145-3.el7 perl-Digest.noarch 0:1.17-245.el7 perl-Digest-MD5.x86_64 0:2.52-3.el7 perl-Encode-Locale.noarch 0:1.03-5.el7 perl-File-Listing.noarch 0:6.04-7.el7 perl-HTML-Parser.x86_64 0:3.71-4.el7 perl-HTML-Tagset.noarch 0:3.20-15.el7 perl-HTTP-Cookies.noarch 0:6.01-5.el7 perl-HTTP-Daemon.noarch 0:6.01-8.el7 perl-HTTP-Date.noarch 0:6.02-8.el7 perl-HTTP-Message.noarch 0:6.06-6.el7 perl-HTTP-Negotiate.noarch 0:6.01-5.el7 perl-IO-Compress.noarch 0:2.061-2.el7 perl-IO-HTML.noarch 0:1.00-2.el7 perl-IO-Socket-IP.noarch 0:0.21-5.el7 perl-IO-Socket-SSL.noarch 0:1.94-7.el7 perl-LWP-MediaTypes.noarch 0:6.02-2.el7 perl-Mozilla-CA.noarch 0:20130114-5.el7 perl-Net-Daemon.noarch 0:0.48-5.el7 perl-Net-HTTP.noarch 0:6.06-2.el7 perl-Net-LibIDN.x86_64 0:0.12-15.el7 perl-Net-SSLeay.x86_64 0:1.55-6.el7 perl-PlRPC.noarch 0:0.2020-14.el7 perl-Sys-Syscall.noarch 0:0.25-10.el7 perl-TimeDate.noarch 1:2.30-2.el7 perl-URI.noarch 0:1.60-9.el7 perl-WWW-RobotRules.noarch 0:6.02-5.el7 perl-libwww-perl.noarch 0:6.05-2.el7 Complete! [root@node01 ~]#
提示：安装环境依赖和以上rpm包，首先要配置好epel源；因为有些依赖包，它来自epel源；相关包我已经上传至我的网盘http://www.qiuhom.com/d/383f34f57cf847beb296/；
安装mariadb-server
配置yum源
[root@node01 ~]# cat /etc/yum.repos.d/mairadb.repo [mariadb] name=mariadb repo baseurl=https://mirrors.tuna.tsinghua.edu.cn/mariadb//mariadb-10.1.46/yum/centos/7/x86_64/ gpgcheck=0 [root@node01 ~]#
安装mariadb-server
[root@node01 ~]# yum install MariaDB-server -y Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirrors.aliyun.com * extras: mirrors.aliyun.com * updates: mirrors.aliyun.com Resolving Dependencies --> Running transaction check ---> Package MariaDB-server.x86_64 0:10.1.46-1.el7.centos will be installed --> Processing Dependency: MariaDB-client for package: MariaDB-server-10.1.46-1.el7.centos.x86_64 --> Processing Dependency: rsync for package: MariaDB-server-10.1.46-1.el7.centos.x86_64 --> Processing Dependency: MariaDB-common for package: MariaDB-server-10.1.46-1.el7.centos.x86_64 --> Processing Dependency: galera for package: MariaDB-server-10.1.46-1.el7.centos.x86_64 --> Processing Dependency: libjemalloc.so.1()(64bit) for package: MariaDB-server-10.1.46-1.el7.centos.x86_64 --> Running transaction check ……省略部分内容…… Installed: MariaDB-server.x86_64 0:10.1.46-1.el7.centos MariaDB-shared.x86_64 0:10.1.46-1.el7.centos Dependency Installed: MariaDB-client.x86_64 0:10.1.46-1.el7.centos MariaDB-common.x86_64 0:10.1.46-1.el7.centos boost-program-options.x86_64 0:1.53.0-28.el7 galera.x86_64 0:25.3.29-1.rhel7.el7.centos jemalloc.x86_64 0:3.6.0-1.el7 rsync.x86_64 0:3.1.2-10.el7 Replaced: mariadb-libs.x86_64 1:5.5.56-2.el7 Complete! [root@node01 ~]#
提示：mariadb-server包名是大写的MariaDB-server；
配置mariadb忽略名称解析
设置mariadb开机自动启动，并启动mariadb
添加用于mogilefs访问数据库的账号
初始化数据库
[root@node01 ~]# mogdbsetup --help
Usage: mogdbsetup [opts]
Options:
Default Description
============ ===========================================
--verbose <off> Be verbose about what's happening.
--dbhost= localhost hostname or IP to database server.
--dbport= dbd default port number to database server.
--dbname= mogilefs database name to create/upgrade.
--dbrootuser= root Database administrator username. Only needed
for initial setup, not subsequent upgrades.
--dbrootpass= <blank> Database administrator password. Only needed
for initial setup, not subsequent upgrades.
--dbuser= mogile Regular database user to create and/or use
for MogileFS database. This is what the
mogilefsd trackers connect as.
--dbpass= <blank> You should change this, especially if your
database servers are accessible to other users
on the network. But they shouldn't be
if you're running MogileFS, because MogileFS
assumes your network is closed.
--type= MySQL Which MogileFS::Store implementation to use.
Available: MySQL, Postgres
--yes Run without questions.
[root@node01 ~]# mogdbsetup --dbhost=192.168.0.41 --dbport=3306 --dbname=mogilefs --dbrootpass=admin --dbuser=mogilefs --dbpass=mogilefs
This will attempt to setup or upgrade your MogileFS database.
It won't destroy existing data.
Run with --help for more information. Run with --yes to shut up these prompts.
Continue? [N/y]: y
Create/Upgrade database name 'mogilefs'? [Y/n]: y
Grant all privileges to user 'mogilefs', connecting from anywhere, to the mogilefs database 'mogilefs'? [Y/n]: n
Stopped.
[root@node01 ~]# mogdbsetup --dbhost=192.168.0.41 --dbport=3306 --dbname=mogilefs --dbrootpass=admin --dbuser=mogilefs --dbpass=mogilefs
This will attempt to setup or upgrade your MogileFS database.
It won't destroy existing data.
Run with --help for more information. Run with --yes to shut up these prompts.
Continue? [N/y]: y
[root@node01 ~]#
提示：如果不想让mogdbsetup在数据库中创建一个任何地址都可访问的mogilefs的用户，在最后的选项中使用n即可，然后在重复执行上述命令即可；如果不想交互式输入y，也可以直接在命令后面用--yes；
验证：在数据库中查看对应的库是否都已创建，对应库中是否都有表？
[root@node01 ~]# mysql Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 7 Server version: 10.1.46-MariaDB MariaDB Server Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mogilefs | | mysql | | performance_schema | | test | +--------------------+ 5 rows in set (0.01 sec) MariaDB [(none)]> use mogilefs Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed MariaDB [mogilefs]> show tables; +----------------------+ | Tables_in_mogilefs | +----------------------+ | checksum | | class | | device | | domain | | file | | file_on | | file_on_corrupt | | file_to_delete | | file_to_delete2 | | file_to_delete_later | | file_to_queue | | file_to_replicate | | fsck_log | | host | | server_settings | | tempfile | | unreachable_fids | +----------------------+ 17 rows in set (0.00 sec) MariaDB [mogilefs]>
到此数据库就准备好了
配置mogilefsd连接数据库
提示：我们只需要修改红框中的内容即可；db_dsn用于指定连接数据库的驱动，以及数据库库名和主机地址；db_user用于指定连接数据库所使用的用户，db_pass用于指定连接数据库的密码；listen用于指定mogilefsd监听的ip地址和端口；后面的配置就是和启动的进程数量的配置，这个可以根据业务的规模来设置；
启动mogilefsd
提示：在centos7上启动mogilefsd时，会报错，我们可以不用管这个错误，实际上mogilefsd是启动成功的，只要看到对应的端口和进程起来，表示mogilefsd启动就没有问题；
配置node01上的mogstored
[root@node01 ~]# cat /etc/mogilefs/mogstored.conf maxconns = 10000 httplisten = 0.0.0.0:7500 mgmtlisten = 0.0.0.0:7501 docroot = /data/mogilefs [root@node01 ~]# mkdir /data/mogilefs/ -pv mkdir: created directory ‘/data’ mkdir: created directory ‘/data/mogilefs/’ [root@node01 ~]# chown -R mogilefs.mogilefs /data/mogilefs/ [root@node01 ~]# ll -d /data/mogilefs/ drwxr-xr-x 2 mogilefs mogilefs 6 Sep 16 13:37 /data/mogilefs/ [root@node01 ~]#
启动mogstored
提示：在centos7上启动mogstored也会同启动mogilefsd一样报错，这个主要是因为systemd的缘故，在centos6不会报错；到此，node01上的mariadb、mogilefsd和mogstored都已经安装配置好了；
复制安装包到node02和node03
在node02上安装
[root@node02 ~]# yum install perl-Net-Netmask perl-IO-stringy perl-Sys-Syslog perl-IO-AIO ./*.rpm -y Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirrors.aliyun.com * extras: mirrors.aliyun.com * updates: mirrors.aliyun.com Package perl-Net-Netmask-1.9015-13.el7.noarch already installed and latest version Package perl-IO-stringy-2.110-22.el7.noarch already installed and latest version Package perl-Sys-Syslog-0.33-3.el7.x86_64 already installed and latest version Package perl-IO-AIO-4.20-1.el7.x86_64 already installed and latest version Examining ./MogileFS-Server-2.46-2.el7.centos.noarch.rpm: MogileFS-Server-2.46-2.el7.centos.noarch Marking ./MogileFS-Server-2.46-2.el7.centos.noarch.rpm to be installed Examining ./MogileFS-Server-mogilefsd-2.46-2.el7.centos.noarch.rpm: MogileFS-Server-mogilefsd-2.46-2.el7.centos.noarch Marking ./MogileFS-Server-mogilefsd-2.46-2.el7.centos.noarch.rpm to be installed Examining ./MogileFS-Server-mogstored-2.46-2.el7.centos.noarch.rpm: MogileFS-Server-mogstored-2.46-2.el7.centos.noarch Marking ./MogileFS-Server-mogstored-2.46-2.el7.centos.noarch.rpm to be installed Examining ./MogileFS-Utils-2.19-1.el7.centos.noarch.rpm: MogileFS-Utils-2.19-1.el7.centos.noarch Marking ./MogileFS-Utils-2.19-1.el7.centos.noarch.rpm to be installed Examining ./perl-Danga-Socket-1.61-1.el6.rf.noarch.rpm: perl-Danga-Socket-1.61-1.el6.rf.noarch Marking ./perl-Danga-Socket-1.61-1.el6.rf.noarch.rpm to be installed Examining ./perl-MogileFS-Client-1.14-1.el7.centos.noarch.rpm: perl-MogileFS-Client-1.14-1.el7.centos.noarch Marking ./perl-MogileFS-Client-1.14-1.el7.centos.noarch.rpm to be installed Examining ./perl-Perlbal-1.78-1.el6.noarch.rpm: perl-Perlbal-1.78-1.el6.noarch Marking ./perl-Perlbal-1.78-1.el6.noarch.rpm to be installed Resolving Dependencies --> Running transaction check ---> Package MogileFS-Server.noarch 0:2.46-2.el7.centos will be installed ---> Package MogileFS-Server-mogilefsd.noarch 0:2.46-2.el7.centos will be installed --> Processing Dependency: perl(DBI) >= 1.44 for package: MogileFS-Server-mogilefsd-2.46-2.el7.centos.noarch ……省略部分内容…… Installed: MogileFS-Server.noarch 0:2.46-2.el7.centos MogileFS-Server-mogilefsd.noarch 0:2.46-2.el7.centos MogileFS-Server-mogstored.noarch 0:2.46-2.el7.centos MogileFS-Utils.noarch 0:2.19-1.el7.centos perl-Danga-Socket.noarch 0:1.61-1.el6.rf perl-MogileFS-Client.noarch 0:1.14-1.el7.centos perl-Perlbal.noarch 0:1.78-1.el6 Dependency Installed: mailcap.noarch 0:2.1.41-2.el7 perl-BSD-Resource.x86_64 0:1.29.07-1.el7 perl-Business-ISBN.noarch 0:2.06-2.el7 perl-Business-ISBN-Data.noarch 0:20120719.001-2.el7 perl-Compress-Raw-Bzip2.x86_64 0:2.061-3.el7 perl-Compress-Raw-Zlib.x86_64 1:2.061-4.el7 perl-DBD-MySQL.x86_64 0:4.023-6.el7 perl-DBI.x86_64 0:1.627-4.el7 perl-Data-Dumper.x86_64 0:2.145-3.el7 perl-Digest.noarch 0:1.17-245.el7 perl-Digest-MD5.x86_64 0:2.52-3.el7 perl-Encode-Locale.noarch 0:1.03-5.el7 perl-File-Listing.noarch 0:6.04-7.el7 perl-HTML-Parser.x86_64 0:3.71-4.el7 perl-HTML-Tagset.noarch 0:3.20-15.el7 perl-HTTP-Cookies.noarch 0:6.01-5.el7 perl-HTTP-Daemon.noarch 0:6.01-8.el7 perl-HTTP-Date.noarch 0:6.02-8.el7 perl-HTTP-Message.noarch 0:6.06-6.el7 perl-HTTP-Negotiate.noarch 0:6.01-5.el7 perl-IO-Compress.noarch 0:2.061-2.el7 perl-IO-HTML.noarch 0:1.00-2.el7 perl-IO-Socket-IP.noarch 0:0.21-5.el7 perl-IO-Socket-SSL.noarch 0:1.94-7.el7 perl-LWP-MediaTypes.noarch 0:6.02-2.el7 perl-Mozilla-CA.noarch 0:20130114-5.el7 perl-Net-Daemon.noarch 0:0.48-5.el7 perl-Net-HTTP.noarch 0:6.06-2.el7 perl-Net-LibIDN.x86_64 0:0.12-15.el7 perl-Net-SSLeay.x86_64 0:1.55-6.el7 perl-PlRPC.noarch 0:0.2020-14.el7 perl-Sys-Syscall.noarch 0:0.25-10.el7 perl-TimeDate.noarch 1:2.30-2.el7 perl-URI.noarch 0:1.60-9.el7 perl-WWW-RobotRules.noarch 0:6.02-5.el7 perl-libwww-perl.noarch 0:6.05-2.el7 Complete! [root@node02 ~]#
把node01上的mogilefsd的配置文件复制到node02上，然后启动mogilefsd
把node01上的mogstored配置文件复制到node02上，然后在node02上创建对应的目录并修改属主和属组为mogilefs，然后启动mogstored
到此node02上的mogilefsd和mogstored就安装配置启动好了；
在node03上安装配置mogstored
[root@node03 ~]# ls MogileFS-Server-2.46-2.el7.centos.noarch.rpm perl-Danga-Socket-1.61-1.el6.rf.noarch.rpm MogileFS-Server-mogilefsd-2.46-2.el7.centos.noarch.rpm perl-MogileFS-Client-1.14-1.el7.centos.noarch.rpm MogileFS-Server-mogstored-2.46-2.el7.centos.noarch.rpm perl-Perlbal-1.78-1.el6.noarch.rpm MogileFS-Utils-2.19-1.el7.centos.noarch.rpm [root@node03 ~]# yum install ./MogileFS-Server-mogstored-2.46-2.el7.centos.noarch.rpm ./MogileFS-Utils-2.19-1.el7.centos.noarch.rpm ./perl-*.rpm perl-Net-Netmask perl-IO-stringy perl-Sys-Syslog perl-IO-AIO -y Loaded plugins: fastestmirror Examining ./MogileFS-Server-mogstored-2.46-2.el7.centos.noarch.rpm: MogileFS-Server-mogstored-2.46-2.el7.centos.noarch Marking ./MogileFS-Server-mogstored-2.46-2.el7.centos.noarch.rpm to be installed Examining ./MogileFS-Utils-2.19-1.el7.centos.noarch.rpm: MogileFS-Utils-2.19-1.el7.centos.noarch Marking ./MogileFS-Utils-2.19-1.el7.centos.noarch.rpm to be installed Examining ./perl-Danga-Socket-1.61-1.el6.rf.noarch.rpm: perl-Danga-Socket-1.61-1.el6.rf.noarch Marking ./perl-Danga-Socket-1.61-1.el6.rf.noarch.rpm to be installed Examining ./perl-MogileFS-Client-1.14-1.el7.centos.noarch.rpm: perl-MogileFS-Client-1.14-1.el7.centos.noarch Marking ./perl-MogileFS-Client-1.14-1.el7.centos.noarch.rpm to be installed Examining ./perl-Perlbal-1.78-1.el6.noarch.rpm: perl-Perlbal-1.78-1.el6.noarch Marking ./perl-Perlbal-1.78-1.el6.noarch.rpm to be installed Loading mirror speeds from cached hostfile * base: mirrors.aliyun.com * extras: mirrors.aliyun.com * updates: mirrors.aliyun.com Package perl-Net-Netmask-1.9015-13.el7.noarch already installed and latest version Package perl-IO-stringy-2.110-22.el7.noarch already installed and latest version Package perl-Sys-Syslog-0.33-3.el7.x86_64 already installed and latest version Package perl-IO-AIO-4.20-1.el7.x86_64 already installed and latest version Resolving Dependencies --> Running transaction check ---> Package MogileFS-Server-mogstored.noarch 0:2.46-2.el7.centos will be installed ---> Package MogileFS-Utils.noarch 0:2.19-1.el7.centos will be installed --> Processing Dependency: perl(Compress::Zlib) for package: MogileFS-Utils-2.19-1.el7.centos.noarch ……省略部分内容…… Installed: MogileFS-Server-mogstored.noarch 0:2.46-2.el7.centos MogileFS-Utils.noarch 0:2.19-1.el7.centos perl-Danga-Socket.noarch 0:1.61-1.el6.rf perl-MogileFS-Client.noarch 0:1.14-1.el7.centos perl-Perlbal.noarch 0:1.78-1.el6 Dependency Installed: mailcap.noarch 0:2.1.41-2.el7 perl-BSD-Resource.x86_64 0:1.29.07-1.el7 perl-Business-ISBN.noarch 0:2.06-2.el7 perl-Business-ISBN-Data.noarch 0:20120719.001-2.el7 perl-Compress-Raw-Bzip2.x86_64 0:2.061-3.el7 perl-Compress-Raw-Zlib.x86_64 1:2.061-4.el7 perl-Data-Dumper.x86_64 0:2.145-3.el7 perl-Digest.noarch 0:1.17-245.el7 perl-Digest-MD5.x86_64 0:2.52-3.el7 perl-Encode-Locale.noarch 0:1.03-5.el7 perl-File-Listing.noarch 0:6.04-7.el7 perl-HTML-Parser.x86_64 0:3.71-4.el7 perl-HTML-Tagset.noarch 0:3.20-15.el7 perl-HTTP-Cookies.noarch 0:6.01-5.el7 perl-HTTP-Daemon.noarch 0:6.01-8.el7 perl-HTTP-Date.noarch 0:6.02-8.el7 perl-HTTP-Message.noarch 0:6.06-6.el7 perl-HTTP-Negotiate.noarch 0:6.01-5.el7 perl-IO-Compress.noarch 0:2.061-2.el7 perl-IO-HTML.noarch 0:1.00-2.el7 perl-IO-Socket-IP.noarch 0:0.21-5.el7 perl-IO-Socket-SSL.noarch 0:1.94-7.el7 perl-LWP-MediaTypes.noarch 0:6.02-2.el7 perl-Mozilla-CA.noarch 0:20130114-5.el7 perl-Net-HTTP.noarch 0:6.06-2.el7 perl-Net-LibIDN.x86_64 0:0.12-15.el7 perl-Net-SSLeay.x86_64 0:1.55-6.el7 perl-Sys-Syscall.noarch 0:0.25-10.el7 perl-TimeDate.noarch 1:2.30-2.el7 perl-URI.noarch 0:1.60-9.el7 perl-WWW-RobotRules.noarch 0:6.02-5.el7 perl-libwww-perl.noarch 0:6.05-2.el7 Complete! [root@node03 ~]#
复制node01上的mogstored配置文件到node03上，然后在node03上创建对应的目录并修改属主和属组为mogilefs，然后启动mogstored
提示：在node03上没有安装mogilefs-server这个包，所以在对应系统上没有mogilefs这个账号，我们需要手动创建这个账号；
启动mogstored
到此三个节点的环境配置，以及服务都已经正常启动了；
四、使用mogadm管理mogilefs
把三个storage节点注册到tracker上
提示：如果集群各节点没有做hosts主机名解析,那么对应的的节点就需要写清楚ip地址即可，如果端口不是7500，我们还需要用--port去指定端口；
检查集群
提示：在tracker节点监听在本机所有地址的7001，执行上述命令不需要加--trackers选项来指明tracker是谁，它默认会去找本机的7001；否则执行上述命令需要加上--trackers来指定tracker的地址和端口；
在非tracker节点执行检查集群的命令
创建devices
分别在3个mogstored节点的docroot说指定的目录下创建以dev+数字的目录，并将属主和属组修改成mogilefs
[root@node03 ~]# mkdir /data/mogilefs/dev3 [root@node03 ~]# chown -R mogilefs.mogilefs /data/mogilefs/dev3 [root@node03 ~]# ll -d /data/mogilefs/dev3 drwxr-xr-x 3 mogilefs mogilefs 37 Sep 16 21:02 /data/mogilefs/dev3 [root@node03 ~]#
添加device
查看device
提示：如果在指定节点的docroot所指定的目录下没有创建dev+设备编号的目录，上面是看不到对应设备的空间大小的；
创建domain
创建class
好了，到此我们就可以上传文件了
上传文件，把/etc/passwd上传到files域中，使用html class
提示：mogupload这个工具是mogilefs的一个上传文件的工具，其中--domain用于指定域，就是把文件放到那个名称空间中；--class用于指定使用那个class策略来同步文件，默认不指定使用default；--key用于指定客户端访问文件的路径；--file用于指定要上传的文件路径；
查看上传文件的信息
提示：查看上传文件的信息需要用mogfileinfo这个工具，我们只需要指定trancker，domain以及文件的key就可以看到，该文件的class，devcount,domain,fid,key,length,以及访问http地址；这里需要说明一下，我们刚才在创建files域中的html这个class 我们指定了mindevcount=3，表示只要使用这个class上传文件，文件至少有3个副本；而我们现在看到的只有一个，这是因为在centos7上，Sys-syscall这个包的版本过高，导致mogilefs异常；
降级Sys-Syscall，解决centos7上安装mogilefs 后端mogstored 同步问题
安装perl编译环境
[root@node01 ~]# yum -y install make gcc unzip perl-DBD-MySQL perl perl-CPAN perl-YAML perl-Time-HiRes Loaded plugins: fastestmirror base | 3.6 kB 00:00:00 epel | 4.7 kB 00:00:00 extras | 2.9 kB 00:00:00 mariadb | 2.9 kB 00:00:00 updates | 2.9 kB 00:00:00 (1/2): epel/x86_64/updateinfo | 1.0 MB 00:00:00 (2/2): epel/x86_64/primary_db | 6.9 MB 00:00:00 Loading mirror speeds from cached hostfile * base: mirrors.aliyun.com * extras: mirrors.aliyun.com * updates: mirrors.aliyun.com Package gcc-4.8.5-39.el7.x86_64 already installed and latest version Package unzip-6.0-21.el7.x86_64 already installed and latest version Package perl-DBD-MySQL-4.023-6.el7.x86_64 already installed and latest version Package 4:perl-5.16.3-295.el7.x86_64 already installed and latest version Package 4:perl-Time-HiRes-1.9725-3.el7.x86_64 already installed and latest version Resolving Dependencies --> Running transaction check ---> Package make.x86_64 1:3.82-23.el7 will be updated ---> Package make.x86_64 1:3.82-24.el7 will be an update ---> Package perl-CPAN.noarch 0:1.9800-295.el7 will be installed --> Processing Dependency: perl(local::lib) for package: perl-CPAN-1.9800-295.el7.noarch ……省略部分内容…… Installed: perl-CPAN.noarch 0:1.9800-295.el7 perl-YAML.noarch 0:0.84-5.el7 Dependency Installed: gdbm-devel.x86_64 0:1.10-8.el7 libdb-devel.x86_64 0:5.3.21-25.el7 perl-Digest-SHA.x86_64 1:5.85-4.el7 perl-ExtUtils-Install.noarch 0:1.58-295.el7 perl-ExtUtils-MakeMaker.noarch 0:6.68-3.el7 perl-ExtUtils-Manifest.noarch 0:1.61-244.el7 perl-ExtUtils-ParseXS.noarch 1:3.18-3.el7 perl-Test-Harness.noarch 0:3.28-3.el7 perl-devel.x86_64 4:5.16.3-295.el7 perl-local-lib.noarch 0:1.008010-4.el7 pyparsing.noarch 0:1.5.6-9.el7 systemtap-sdt-devel.x86_64 0:4.0-11.el7 Updated: make.x86_64 1:3.82-24.el7 Dependency Updated: libdb.x86_64 0:5.3.21-25.el7 libdb-utils.x86_64 0:5.3.21-25.el7 Complete! [root@node01 ~]#
提示：在mogstored节点上都要安装好perl环境依赖包；然后按照下面的步骤重新编译安装Sys-Syscall；然后重启mogstored即可生效；
下载低版本的Sys-Syscall源码包，下载地址：https://cpan.metacpan.org/authors/id/B/BR/BRADFITZ/Sys-Syscall-0.23.tar.gz；并解压，进入到源码目录
编译安装Sys-Syscall
验证
重启mogstored，mogilefsd
提示：在某一台tracker节点重新编译安装Sys-Syscall，然后重启mogilefsd和mogstored即可；我这里是在所有节点都编译安装了，然后再把所有节点的mogstored和所有的mogilefsd都重启了一遍，其实用不着；
上传文件看看对应的副本数量是否还是只有一个？
提示：可以看到对应的devcount和我们之前指定的class上的mindevcount就一样了；
验证：访问指定上述任一一个地址，看看访问到的文件内容是否是我们上传到文件内容？
提示：可以看到我们上传到文件内容在tracker给我们返回的地址上能够访问到，并且里面的内容也是一样的；
验证：停掉node02上的mogstored，看看对应的tracker是否能够及时发现对应的storage不在线了呢？
提示：可以看到当node02上的mogstored挂掉以后，在检查集群，tracker就能及时的发现对应的设备不在线了，这个有点类似nginx对后端web服务器做健康状态监测的感觉；也就说tracker在监视着注册在tracker上的storage节点；
到此，mogilefs在centos7上的安装部署，以及使用mogadm工具管理集群就完成了，对于mogilefs通常我们上传文件是通过业务程序调用api实现，mogupload只是一个测试工具；对于查看文件，通常用户也不会使用mogfieinfo返回的链接去查看文件，通常会使用一个web反向代理（nginx）去代理用户的访问；比如用户要查看/images/test.jpg，而在tracker返回的对应资源的链接中，一定不是/images/test.jpg，这个时候我们就需要用到web反向代理，让其反向代理能够帮助我们去tracker取到对应uri的资源链接，从而帮助我们去storage节点获取到对应的文件，然后再返回给用户；最后还是建议，如果用到mogilefs，最好跑在centos6上，centos7系统环境较高，有些依赖可能成问题；在centos6上，我测试过，完全没有上述的问题；我们只需要安装perl-IO-AIO这一个依赖包就可以解决mogstored启动问题；centos6上需要用到的rpm包可以去我的网盘下载http://www.qiuhom.com/d/47e8f7ac56a445f1bfc6/；
作者：Linux-1874
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