简介

Lsyncd使用文件系统事件接口（inotify或fsevents）来监视对本地文件和目录的更改。Lsyncd将这些事件整理几秒钟，然后生成一个或多个进程以将更改同步到远程文件系统。默认同步方法是rsync

Lsyncd是一种轻量级的实时镜像解决方案。Lsyncd相对容易安装，不需要新的文件系统或块设备。Lysncd不会妨碍本地文件系统性能

可以通过配置文件实现细粒度的自定义。自定义操作配置甚至可以从头开始编写，从shell脚本到用Lua语言编写的代码

版本要求

Lsyncd 2.2.1要求所有源和目标计算机上的rsync> = 3.1

安装

lsyncd 在 epel源中

yum install lsyncd

配置

配置文件说明 /etc/lsyncd.conf

lsyncd配置文件使用lua语法编写

settings

settings {

logfile    日志文件

pidfile    pid文件

nodaemon   表示不启用守护模式，默认

statusFile   运行状态文件

statusInterval   将lsyncd的状态写入上面的statusFile的间隔，默认10秒

inotifyMode     指定inotify监控的事件，默认是CloseWrite，还可以是Modify或CloseWrite or Modify

maxProcesses    最大进程数

maxDelays     累计多少监控事件同步一次,即使delay时间未到也同步

}

sync 三种模式

default.rsync

sync {

 default.rsync,

 source = "/tmp/src",

 target = "172.29.88.223:/tmp/dest",

 maxDelays = 5,

 delay = 30,

-- init = true,

rsync = {

 binary = "/usr/bin/rsync",

 archive = true,

 compress = true,

 bwlimit = 2000

 rsh = "/usr/bin/ssh -p 22 -o StrictHostKeyChecking=no"

}

}

rsync daemon

sync {

 default.rsync,

 source = "/tmp/src",

 target = "rsync_backup@172.16.1.41::backup",

 delete="running",

 exclude = { ".*", ".tmp" },

 delay = 3,

 init = false,

rsync = {

 binary = "/usr/bin/rsync",

 archive = true,

 compress = true,

 verbose = true,

 password_file = "/etc/rsync.pwd",

 _extra = {"--bwlimit=200"}

}

}

default.rsyncssh

sync {

   default.rsyncssh,

   source="/srcdir",

   host="remotehost",

   excludeFrom="/etc/lsyncd.exclude",

   targetdir="/dstdir",

   rsync = {

     archive = true,

     compress = false,

     whole_file = false

   },

   ssh = {

     port = 1234

   }

}

default.direct

sync {

    default.direct,

    source  = "/home/user/src/",

    target  = "/home/user/trg/"

}

/etc/lsyncd.conf

settings {

 logfile = "/var/log/lsyncd/lsyncd.log",

 statusFile = "/var/log/lsyncd/lsyncd.status",

 inotifyMode = "CloseWrite",

 maxProcesses = 8,

}

sync {

 default.rsync,

 source = "/tmp/src",

 target = "rsync_backup@172.16.1.41::backup",

 delete="running",

 exclude = { ".*", ".tmp" },

 delay = 3,

 init = false,

rsync = {

 binary = "/usr/bin/rsync",

 archive = true,

 compress = true,

 verbose = true,

 password_file = "/etc/rsync.pwd",

 _extra = {"--bwlimit=200"}

}

}

sync {

 default.rsync,

 source = "/tmp/src",

 target = "rsync_backup@172.16.1.41::wuxing",

 delete="running",

 exclude = { ".*", ".tmp" },

 delay = 3,

 init = false,

rsync = {

 binary = "/usr/bin/rsync",

 archive = true,

 compress = true,

 verbose = true,

 password_file = "/etc/rsync.pwd",

 _extra = {"--bwlimit=200"}

}

}

delete

delete	=	true       #在目标上删除源中没有的内容。在启动时以及在正常操作期间删除的内容

delete	=	false      #不会删除目标上的任何文件。不在启动时也不在正常操作上

delete	=	'startup'  # Lsyncd将在启动时删除目标上的文件，但不会在正常操作时删除

delete	=	'running'  # Lsyncd在启动时不会删除目标上的文件，但会删除正常操作期间删除的文件

settings {

 logfile = "/var/log/lsyncd/lsyncd.log",

 statusFile = "/var/log/lsyncd/lsyncd.status",

 inotifyMode = "CloseWrite",

 maxProcesses = 8,

}

sync {

 default.rsync,

 source = "/data",

 target = "rsync_backup@backup::backup",

 delete= true,

 exclude = { ".*" },

 delay = 1,

rsync = {

 binary = "/usr/bin/rsync",

 archive = true,

 compress = true,

 verbose = true,

 password_file = "/etc/rsync.pwd",

 _extra = {"--bwlimit=200"}

}

}

巴特西

lsyncd-实时同步（镜像）守护程序

简介