Lsyncd real time synchronization

1、 describe ,, Lsyncd＋ssh

Open source lsyncd use inotify Principle monitor a directory , If there is a change in the directory , utilize rsync Automatic protocol synchronization The server , therefore lsyncd It is a lightweight real-time image solution .

Fine grained customization can be achieved through configuration files , Configuration files can be written lua Code , It's easy , Powerful and flexible configuration .

2、 Open source software

rely on lua Environmental Science ：

#wget https://lsyncd.googlecode.com/files/lsyncd-2.1.5.tar.gz #yum install lua lua-static lua-devel #tar -xzvf lsyncd-2.1.5.tar.gz #cd lsyncd-2.1.5 #./configure #make #make install #whereis lsyncd lsyncd: /usr/local/bin/lsyncd

  Create a directory of configuration files ：

#mkdir /etc/lsyncd #cd /etc/lsyncd #vim lsyncd.lua    -- Be careful ：lua Rules of grammar

File configuration syntax settings{  logfile = "/var/log/lsyncd.log",    # Log path  statusFile = "/var/log/lsyncd-status.log",  # Status file  pidfile = "/var/run/lsyncd.pid",  #pid File path  statusInterval = 1,    # Minimum write time of status file  nodaemon = false,      #daemon function  maxProcesses = 4,      # The biggest process  maxDelays = 1          # Maximum delay }

## many host Sync servers = {  "192.168.0.10",  "192.168.0.20" } ## The synchronization rules for _, server in ipairs(servers) do    ## iteration servers  sync{       default.rsyncssh,      ## Default rsync+ssh,rsync The version needs to be upgraded 3 Above version   source = "/test1",    # Source directory   delete = true,            host = server,          targetdir = "/test1",  # Target directory   exclude={                      ".txt"            # exclude   },   rsync = {    binary = "/usr/bin/rsync",    archive = true,    # file    compress = false,  # Compress    owner = true,      # Belong to    perms = true,      # jurisdiction    whole_file = false   },   ssh = {    port = 22   }  } end

start-up lsyncd service ：

#lsyncd /etc/lsyncd/lsyncd.lua #ps -ef | grep lsyncd lsyncd    lsyncd.lua

Be careful ： The server Configuration is required between ssh Password-free login