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前言:Lysncd 实际上是lua语言封装了 inotify 和 rsync 工具

项目需求

web端通过lsyn01cd软件进行完成向备份服务器实时同步备份数据。

部署过程

nfs服务器（客户端）

第一个里程：

rpm -ivh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm # 安装 epel 源
yum -y install lsyncd rsync # 安装
vim /etc/lsyncd.conf # 配置

第二个里程

vim /etc/lsyncd.conf # 配置

[root@nfs01 tmp]# vi /etc/lsyncd.conf 

----
-- User configuration file for lsyncd.
--
-- Simple example for default rsync, but executing moves through on the target.
--
-- For more examples, see /usr/share/doc/lsyncd*/examples/  #开始将此项变为注释，否则启动服务会出现问题。--代表注释
-- 
-- sync{default.rsyncssh, source="/var/www/html", host="localhost", targetdir="/tmp/htmlcopy/"}
settings {
    logfile      = "/var/log/lsyncd/lsyncd.log", #指定lsyncd工具本身运行所产生的日志文件存放位置
    statusFile   = "/var/log/lsyncd/lsyncd.status",#定义lsyncd监控目录状态文件的存放位置
    inotifyMode  = "CloseWrite", #事件的状态
    maxProcesses = 1000, #指定同步时进程的最大个数
    maxDelays    = 1, #当事件被命中累计多少次后才进行一次同步
    }

sync {     #主要用来定义同步时的一些设置,可以同时同步多个目录,只需要在该代码块中事先定义好多个sync即可
    default.rsync, #指定lsyncd运行模式,另外,还有>default.direct,default.rsyncssh模式
    source    = "/tmp/", #需要同步数据的目录
    target    = "rsync_backup@172.16.1.41::backup", #rsync服务器的相关命令
    delay     = 1, #当命中的事件累计到多少时再触发同步
    delete    = true, #删除目录中的数据会与rsync服务器同步
    rsync     = {
        binary    = "/usr/bin/rsync", #rsync的命令
        password_file = "/etc/rsync.password", #本地rsync调用的密码文件
        archive   = true,
        compress = false,
        verbose   = true
        }
    }

便于以后用到方便拷贝

[root@nfs01 tmp]# vi /etc/lsyncd.conf 

----
-- User configuration file for lsyncd.
--
-- Simple example for default rsync, but executing moves through on the target.
--
-- For more examples, see /usr/share/doc/lsyncd*/examples/
--
-- sync{default.rsyncssh, source="/var/www/html", host="localhost", targetdir="/tmp/htmlcopy/"}
settings {
    logfile      = "/var/log/lsyncd/lsyncd.log",
    statusFile   = "/var/log/lsyncd/lsyncd.status",
    inotifyMode  = "CloseWrite",
    maxProcesses = 1000,
    maxDelays    = 10,
    }

sync {
    default.rsync,
    source    = "/tmp/",
    target    = "rsync_backup@172.16.1.41::backup",
    delay     = 1,
    delete    = true,
    rsync     = {
        binary    = "/usr/bin/rsync",
        password_file = "/etc/rsync.password",
        archive   = true,
        compress = false,
        verbose   = true
        }
    }

第三个里程

启动lsyncd服务

systemctl start lsyncd 

查看服务运行状态

[root@nfs01 tmp]# systemctl status lsyncd 
● lsyncd.service - Live Syncing (Mirror) Daemon
   Loaded: loaded (/usr/lib/systemd/system/lsyncd.service; disabled; vendor preset: disabled)
   Active: active (running) since Sun 2019-07-21 19:10:01 CST; 1min 18s ago
 Main PID: 9291 (lsyncd)
   CGroup: /system.slice/lsyncd.service
           └─9291 /usr/bin/lsyncd -nodaemon /etc/lsyncd.conf

Jul 21 19:10:01 nfs01 lsyncd[9163]: 18:45:00 Normal: Finished a list after exitcode: 0
Jul 21 19:10:01 nfs01 lsyncd[9163]: 18:45:00 Normal: Finished a list after exitcode: 0
Jul 21 19:10:01 nfs01 lsyncd[9163]: 19:10:01 Normal: --- TERM signal, fading ---
Jul 21 19:10:01 nfs01 systemd[1]: Stopped Live Syncing (Mirror) Daemon.
Jul 21 19:10:01 nfs01 systemd[1]: Unit lsyncd.service entered failed state.
Jul 21 19:10:01 nfs01 systemd[1]: lsyncd.service failed.
Jul 21 19:10:01 nfs01 systemd[1]: Started Live Syncing (Mirror) Daemon.
Jul 21 19:10:01 nfs01 lsyncd[9291]: sending incremental file list
Jul 21 19:10:01 nfs01 lsyncd[9291]: sent 178 bytes  received 25 bytes  406.00 bytes/sec
Jul 21 19:10:01 nfs01 lsyncd[9291]: total size is 0  speedup is 0.00

backup服务器端

• 1.确保rsync服务运行正常
• 2.确保从客户端可正常备份数据

3.进行测试

nfs服务器的/tmp目录下创建文件

[root@nfs01 tmp]# touch oldboy{01..10}.txt
[root@nfs01 tmp]# ls 
oldboy{01.10}.txt  oldboy02.txt  oldboy04.txt  oldboy06.txt  oldboy08.txt  oldboy10.txt
oldboy01.txt       oldboy03.txt  oldboy05.txt  oldboy07.txt  oldboy09.txt

backup端进行查看

[root@backup backup]# ls 
oldboy01.txt  oldboy03.txt  oldboy05.txt  oldboy07.txt  oldboy09.txt
oldboy02.txt  oldboy04.txt  oldboy06.txt  oldboy08.txt  oldboy10.txt

nfs服务器的/tmp 删除文件

[root@nfs01 tmp]# rm -fr oldboy*
[root@nfs01 tmp]# ls 
[root@nfs01 tmp]# 

backup服务器/backup的目录中查看

[root@backup backup]# ls 
[root@backup backup]# 

总结：经过测试 移动文件或目录 创建递归目录都为正常。