Rsync : Sync Files/Directories2016/06/19

Copy files or directories from one location to an another host by rsync.
Basic usage of rsync is here.

If you'd like to set rsync automatically by cron or others, it need to configure like follows because authentication is required without settings. For example, Copy files or directories under the [/root/work] on dlp.srv.world to [/home/backup] on www.srv.world.


+----------------------+          |          +----------------------+
|     dlp.srv.world    |10.0.0.30 | 10.0.0.31|     www.srv.world    |
|                      +----------+----------+                      |
|     /root/work/*     |   ------------->    |     /home/backup/*   |
+----------------------+        copy         +----------------------+

[1]	Configure on source host.

root@dlp:~#

apt-get -y install rsync

root@dlp:~#

vi /etc/rsync_exclude.lst

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

test
test.txt

[2]	Configure on destination host.

root@www:~#

apt-get -y install rsync

root@www:~#

vi /etc/default/rsync

# line 8: change

RSYNC_ENABLE=

true

root@www:~#

vi /etc/rsyncd.conf

# create new

# any name you like

[backup]

# destination directory to copy

path = /home/backup

# hosts you allow to access

hosts allow = 10.0.0.30
hosts deny = *
list = true
uid = root
gid = root
read only = false

root@www:~#

mkdir /home/backup

root@www:~#

systemctl start rsync

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

root@dlp:~#

rsync -avz --delete --exclude-from=/etc/rsync_exclude.lst /root/work/ www.srv.world::backup

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

root@dlp:~#

crontab -e

# for example, run at 2:00 AM in a day

00 02 * * * rsync -avz --delete --exclude-from=/etc/rsync_exclude.lst /root/work/ www.srv.world::backup

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