1、目标：192.168.130.61、192.168.130.62实时同步192.168.130.63的数据
2、配置服务器端192.168.130.61/62
yum -y install xinetd rsync
vim /etc/rsyncd.conf
uid = nobody
gid = nobody
use chroot = no
max connections = 10
strict modes = yes
pid file = /var/run/rsyncd.pid
log file = /var/log/rsyncd.log
[data]
path = /data/
ignore errors = yes
read only = no
write only = no
hosts allow = 192.168.0.0/16
hosts deny = *
list = false
uid = root
gid = root
auth users = username
secrets file = /etc/rsyncd.passwd
mkdir /data
echo "username:password" > /etc/rsyncd.passwd
chmod 600 /etc/rsyncd.passwd
chkconfig rsync on
service xinetd start
netstat -tuanlp | grep 873
mkdir /data
3、配置客户端192.168.130.63
yum -y install https://mirrors.aliyun.com/epel/6Server/x86_64/Packages/e/epel-release-6-8.noarch.rpm
yum -y install rsync inotify-tools
脚本实现当某一目录有文件变化是，自动同步改目录下的所有文件。
vim /etc/rsync.sh
#!/bin/bash
src=/data/
des=data
rsync_passwd_file=/etc/rsyncd.passwd
ip1=192.168.130.61
ip2=192.168.130.62
user=username
cd ${src}
/usr/bin/inotifywait -mrq --format '%Xe %w%f' -e modify,create,delete,attrib,close_write,move ./ | while read file
do
INO_EVENT=$(echo $file | awk '{print $1}')
INO_FILE=$(echo $file | awk '{print $2}')
if [[ $INO_EVENT =~ 'CREATE' ]] || [[ $INO_EVENT =~ 'MODIFY' ]] || [[ $INO_EVENT =~ 'CLOSE_WRITE' ]] || [[ $INO_EVENT =~ 'MOVED_TO' ]] || [[ $INO_EVENT =~ 'DELETE' ]] || [[ $INO_EVENT =~ 'MOVED_FROM' ]]
then
rsync -az --delete --password-file=${rsync_passwd_file} $(dirname ${INO_FILE}) ${user}@${ip1}::${des} &&
rsync -az --delete --password-file=${rsync_passwd_file} $(dirname ${INO_FILE}) ${user}@${ip2}::${des}
fi
if [[ $INO_EVENT =~ 'ATTRIB' ]]
then
if [ ! -d "$INO_FILE" ]
then
rsync -az --password-file=${rsync_passwd_file} $(dirname ${INO_FILE}) ${user}@${ip1}::${des} &&
rsync -az --password-file=${rsync_passwd_file} $(dirname ${INO_FILE}) ${user}@${ip2}::${des}
fi
fi
done
chmod +x /etc/rsync.sh
mkdir /data
echo "/etc/rsync.sh &" >> /etc/rc.local
每两小时做1次全量同步
因为inotify只在启动时会监控目录，他没有启动期间的文件发生更改，他是不知道的，所以这里每2个小时做1次全量同步，防止各种意外遗漏，保证目录一致。
crontab -e
* */2 * * * rsync -az --password-file=/etc/rsyncd.passwd /data/ root@192.168.130.61::data && rsync -az --password-file=/etc/rsyncd.passwd /data/ root@192.168.130.62::data
echo 50000000 > /proc/sys/fs/inotify/max_user_watches （设置inotifywait或inotifywatch命令可以监视的文件数量(单进程)）
echo 50000000 > /proc/sys/fs/inotify/max_queued_events （设置inotify实例事件(event)队列可容纳的事件数量）
echo "echo 50000000 > /proc/sys/fs/inotify/max_user_watches" >> /etc/rc.local
echo "echo 50000000 > /proc/sys/fs/inotify/max_queued_events" >> /etc/rc.local
echo password >> /etc/rsyncd.passwd
chmod 600 /etc/rsyncd.passwd
/etc/rsync.sh
