How To Setup Backup Server in FreeBSD and CentOS

Introduction:

Each organization has important files. These files are the bread and butter for the company. What if a file corruption happens? Can these files be retrieved? Well there is a solution and this is to have a backup system.  Today backup storage appliance cause thousands and some company find investing to this amount impractical. What is presented in this paper is a backup solution that will cater the issue with a minimal cost using opensource software.

Purpose:

Create a backup solution that is low cost and flexible.

Installation:

SERVER SIDE:

Operating System: CentOS Linux 5.x

Make sure xinetd and rsync is available, if not type

# rpm –qa | grep rsync

# rpm –qa | grep xinetd

# yum -y install rsync xinetd

Add xinetd service to system

# chkconfig –add xinetd

Make sure xinetd running on init 3 and 5

# chkconfig –list xinetd

Enable rsync

# vi /etc/xinetd.d/rsync
Change disable = yes into disable = no

Create username and password for rsync client to use

# vi /etc/rsyncd.secrets
adminname:hispassword

CLIENT SIDE:

Operating System: FreeBSD 8.0

During installation select rsync package

Configuration:

SERVER SIDE:

Create configuration and shares for rsync daemon

# vi /etc/rsyncd.conf
motd file=/etc/motd

max connections = 15

log file = /var/log/rsync.log

timeout = 300

read only = yes

list = yes

hosts allow = 192.168.0.0/24

uid=root

gid=root

[rsync-<directoryname1>]

path = /home/<directoryname1>

comment = <directoryname1> data shared files

[rsync-<directoryname2>]

path = /opt2/<directoryname2>

comment = <directoryname2> shared files

Secure /etc/rsyncd.*
# chown root.root /etc/rsyncd.*
# chmod 600 /etc/rsyncd.*

Restart xinetd

# service xinetd restart

Make sure rsync now running

# chkconfig –list

Open port 873 tcp and udp on firewall to allow client access

CLIENT SIDE:

Create a script that will be ran in cron.

rsync01.sh:

#!/bin/sh

/usr/local/bin/rsync -aHv 192.168.0.4::rsync-<directoryname1>  /u01/RSYNC-FILES-U01/<directoryname1>

rsync02.sh:

#!/bin/sh

/usr/local/bin/rsync -aHv 192.168.0.4::rsync-<directoryname2>  /u02/RSYNC-FILES-U02/<directoryname2>

Add this entry to cron

# | min | hour | day | month | day of week | command |

# RSYNC BACKUP

0 22 * * *  sh /u01/SYSADMIN/SCRIPTS/rsync01.sh && sh /u01/SYSADMIN/SCRIPTS/rsyn

c02.sh

Source / references

http://gd.tuwien.ac.at/utils/admin-tools/rsync/rsyncd.conf.html

http://am3n.profusehost.net/index.php?id=70

http://am3n.profusehost.net/index.php?print=70