备份源10.16.77.93
备份端10.16.77.95
原理：利用inotify监控mysql数据库数据目录：/usr/local/mysql/data
一．备份端服务的配置
1）确认rsync是否安装，大多数linux发行版默认安装rsync
rpm -q rsync
2)手动创建rsync的配置文件
uid=root
gid=root
use chroot = no
max connections = 10
strict modes = yes
pid file = /var/run/rsyncd.pid
lock file = /var/run/rsyncd.lock
log file = /var/log/rsyncd.log
[mysqldata]
path = /data/mysqldata
comment = mysql data
ignore errors
read only = no
write only = no
hosts allow = 10.16.77.93
list = false
auth users = rsync_user
secrets file = /etc/rsync.password
3)建立rsync用户名和密码文件，并为/etc/rsync.password授权为600
echo "rsync_user:rsync_user_pwd" > /etc/rsync.password
chmod -R 600 /etc/rsync.password
4)启动rsync服务
rsync --daemon
至此备份端服务配置完成
二．备份源配置
1)设置rsync客户端密码文件，将密码文件的权限设置成600
客户端只需要设置rsync同步密码即可，不用重设用户名
echo "rsync_user_pwd" > /etc/rsync.password
chmod -R 600 /etc/rsync.password
2)安装inotify
./configure --prefix=/usr/local
make && make install
3)编写运行监控脚本。为了保证/usr/local/mysql/data目录自动同步，安装完成inotify后，写一个inotify脚本。
#!/bin/bash
ip=10.16.77.95
src=/data/mysqldata_src/
dst=mysqldata
user=rsync_user
/usr/local/bin/inotifywait -mrq --timefmt '%d/%m/%y %H:%M' --format '%T %w%f' -e modify,delete,create,attrib ${src} \
| while read file
do
rsync -vzrtopg --delete --progress $src $user@$ip::$dst --password-file=/etc/rsync.password > /dev/null && echo "$src was rsyncd"
done
