INTRODUCTION

What is lsyncd?

When managing a web server or an application, there are many situations that require synchronization between directories. While a number of tools can help you accomplish this, lsyncd is a strong candidate.

For this guide, we will be using Centos 7 VPS, but any modern distribution should function in a similar way.

Step 1:Destination Server Setup

Install and configure rsync server on destination

yum -y install rsync xinetd

Step 2:Enable rsync in xinetd

Edit rsync config ,change like below:

vi /etc/xinetd.d/rsync

service rsync

{

disable= no

flags= IPv6

socket_type= stream

wait= no

user= root

server= /usr/bin/rsync

server_args= –daemon

log_on_failure+= USERID

}

Step 3:Start xinetd service

service xinetd start
chkconfig xinetd on

Step 4:Add rsync module in /etc/rsyncd.conf

vi /etc/rsyncd.conf

[linuxcriptshub_w]

path = /var/www/html/

hosts allow = 123.456.78.90  ##>>Source server ip 

hosts deny = *

list = true

uid = root

gid = root

read only = false

Step 5:Source Server Setup

Install lsyncd from EPEL

yum --enablerepo=epel -y install lsyncd

Step 6:Uncomment line #4 in /etc/sysconfig/lsyncd

vi /etc/sysconfig/lsyncd

# Keep the space there for systemd. Don’t nest variables without

# changing the systemd service file to use: /usr/bin/sh -c ‘eval XXXX’

#

LSYNCD_OPTIONS=”-pidfile /var/run/lsyncd.pid /etc/lsyncd.conf”

#LSYNCD_OPTIONS=” ”

#LSYNCD_USER=””

Step 7:Add this into lsyncd main config file

vi /etc/lsyncd.conf

settings{

logfile = “/var/log/lsyncd/lsyncd.log”,

statusFile = “/tmp/lsyncd.stat”,

statusInterval = 1,

}

sync{

default.rsync,

source=”/home/web/html/”,   ##>>path you needed to sync

target=“123.456.789.91::linuxscriptshub_w/”,   ##>>Destination Server ip 

}

Step 8:Configure log rotation

vi /etc/logrotate.d/lsyncd

/var/log/lsyncd/*log {

missingok

notifempty

sharedscripts

postrotate

if [ -f /var/lock/lsyncd ]; then

/sbin/service lsyncd restart > /dev/null 2>/dev/null || true

fi

endscript

}

Final Step:Start the lsyncd service and enable the lsyncd service to start on boot

service lsyncd start

chkconfig lsyncd on