Rsync - Synchronizes files and directories2014/08/26

	Synchronizes files and directories from one location to another by rsync. Basic usage of rsync is here. The example below is for automatical settings. Ecxample ⇒ Copy files and directories in /var/www/html on a HostA[10.0.0.31] to in /home/backup on HostB[10.0.0.30].
[1]	Configure on Destination Host.

[root@dlp ~]#

yum -y install rsync xinetd

[root@dlp ~]#

vi /etc/xinetd.d/rsync

# default: off
# description: The rsync server is a good addition to an ftp server, as it \
# allows crc checksumming etc.
service rsync
{

disable

# change

flags

= IPv6

socket_type

= stream

wait

= no

user

= root

server

= /usr/bin/rsync

server_args

= --daemon

log_on_failure

+= USERID

}

[root@dlp ~]#

/etc/rc.d/init.d/xinetd start

Starting xinetd:

[ OK ]

[root@dlp ~]#

chkconfig xinetd on

[root@dlp ~]#

mkdir /home/backup

[root@dlp ~]#

vi /etc/rsyncd.conf

# any name you like

[website]

# destination directory

path = /home/backup

# Hosts you allow to copy (specify source Host)

hosts allow = 10.0.0.31
hosts deny = *
list = true
uid = root
gid = root
read only = false

[2]	Configure on Source Host.

[root@www ~]#

yum -y install rsync

[root@www ~]#

vi /etc/rsync_exclude.lst

# specify files or directories you'd like to exclude to copy

test
test.txt

[3]	It's OK. Execute rsync on Source Host like follows.

[root@www ~]#

rsync -avz --delete --exclude-from=/etc/rsync_exclude.lst /var/www/html/ 10.0.0.30::website

# Add in cron if you'd like to run reguraly

[root@www ~]#

crontab -e

# run at 2:00 AM in a day

00 02 * * * rsync -avz --delete --exclude-from=/etc/rsync_exclude.lst /var/www/html/ 10.0.0.30::website

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