备份全网服务器数据生产架构方案案例模型
某公司里有一台web服务器，里面的数据很重要，但是始果硬盘坏了，数据就会丢失，现在领导要求你把数据在其他机器上做一个周期性定时备份，要求如下：
每天晚上00点整在web服务器A上打包备份网站程序目录并通过rsync命令推送到服务器B上备份保留（备份思路可以是先在本地按日期打包，然后再推送到备份服务器上）
具体要求如下：
1) web服务器A和备份服务器B的备份目录必须都为/backup
2) web服务器站点目录假定为(/var/www/html)
解答：
操作系统
| 主机名 | 网卡eth0 | 默认网关 | 用途 |
| root@A-Server | 192.168.1.111 | 192.168.1.1 | Rsync 节点 |
| root@B-Server | 192.168.1.121 | 192.168.1.1 | Rsync服务端 |
子网掩码均为255.255.255.0
配置rsync服务端B-Server备份服务器
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[root@B-Server ~]# rpm -aq rsync
rsync-3.0.6-4.el5_7.1
[root@B-Server ~]# vi /etc/rsyncd.conf
[root@B-Server ~]# cat /etc/rsyncd.conf
#Rsync server
#created by oldboy 15:01 2009-6-5
##rsyncd.conf start##
uid = root
gid = root
use chroot = no
max connections = 2000
timeout = 600
pid file = /var/run/rsyncd.pid
lock file = /var/run/rsync.lock
log file = /var/log/rsyncd.log
ignore errors
read only = false
list = false
hosts allow = 192.168.1.1/24
hosts deny = 0.0.0.0/32
auth users = rsync_backup
secrets file = /etc/rsync.password
[backup]
comment = www by Mr.Xiong 14:18 2012-1-13
path = /backup/
[root@B-Server ~]# dos2unix /etc/rsyncd.conf
dos2unix: converting file /etc/rsyncd.conf to UNIX format ...
[root@B-Server ~]# mkdir /backup
[root@B-Server ~]# echo "rsync_backup:dingjian">/etc/rsync.password
[root@B-Server ~]# chmod 600 /etc/rsync.password
[root@B-Server ~]# cat /etc/rsync.password
rsync_backup:dingjian
[root@B-Server ~]# ll /etc/rsync.password
-rw------- 1 root root 22 Apr 23 17:42 /etc/rsync.password
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启动rsync服务
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[root@B-Server ~]# rsync --daemon
[root@B-Server ~]# lsof -i tcp:873
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
rsync 3173 root 3u IPv4 11363 0t0 TCP *:rsync (LISTEN)
[root@B-Server ~]# netstat -lntup|grep 873
tcp 0 0 0.0.0.0:873 0.0.0.0:* LISTEN 3173/rsync
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 2873/sendmail
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配置Rsync客户端 A-Server备份服务器
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[root@A-server scripts]# vi /etc/rsync.password
[root@A-server scripts]# chmod 600 /etc/rsync.password
[root@A-server scripts]# mkdir /var/www/html –p
[root@A-server ~]# mkdir /backup/192.168.1.111 -p
[root@A-server ~]# mkdir /server/scripts -p
[root@A-server ~]# cd /server/scripts
[root@A-server scripts]# vi back.sh
[root@A-server scripts]# cat back.sh
cd /var/www &&
tar zcf /backup/192.168.1.111/html_$(date +%F).tar.gz ./html &&
cd /backup/ &&
rsync -az . rsync_backup@192.168.1.119::bacup --password-file=/etc/rsync.password >&/dev.null
find /backup -type f -name "*.gz" -mtime +7|xargs rm –f
[root@58server1 scripts]# sh -x back.sh
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把脚本写到定时任务，使其每天晚上00点备份
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[root@A-server scripts]# crontab -e
####################
00 00 * * * /bin/sh /server/scripts/back.sh >&/dev/null
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