前言:
rsync可以实现触发式的文件同步,但是通过crontab守护进程方式进行触发,同步的数据和实际数据会有差异,而inotify可以监控文件系统的各种变化,当文件有任何变动时,就触发rsync同步,这样刚好解决了同步数据的实时性问题。
一、基本环境
系统:CentOS 2.6.32-220.el6.x86_64
软件包版本:rsync-3.0.6-12.el6.x86_64
inotify-tools-3.14
下载链接:
服务端(server):172.16.32.204
客服端(client1):172.16.32.205
(client2):172.16.32.206
二、客户端配置(172.16.32.205、172.163.32.206)
1. client1 172.16.32.205配置
安装rsync
#yum install -y rsync xinetd
在/etc/目录下建立rsyncd.conf配置文件进行编辑
#vim /etc/rsyncd.conf
uid = nobody
gid = nobody
use chroot = no
max connections = 10
strict modes = yes
pid file = /var/run/rsyncd.pid
lock file = /var/run/rsync.lock
log file = /var/log/rsyncd.log
[lixuan]
path = /data/lixuan/ #本地自定义路径
comment = client file
ignore errors
read only = no
write only = no
hosts allow = 172.16.32.204 #服务端IP地址
hosts deny = *
list = false
uid = root
gid = root
auth users = root
secrets file = /etc/client1.pass #自动同步密码文件
新建/etc/client1.pass 文件
#echo "root:123456" >>/etc/client1.pass
#chmod 600 /etc/client1.pass
启动rsync服务
#/etc/init.d/xinetd start
2. client2 172.16.32.206配置
安装rsync
#yum install -y rsync xinetd
在/etc/目录下建立rsyncd.conf配置文件进行编辑
#vim /etc/rsyncd.conf
uid = nobody
gid = nobody
use chroot = no
max connections = 10
strict modes = yes
pid file = /var/run/rsyncd.pid
lock file = /var/run/rsync.lock
log file = /var/log/rsyncd.log
[lixuan]
path = /data/lixuan/ #本地自定义路径
comment = client file
ignore errors
read only = no
write only = no
hosts allow = 172.16.32.204 #服务端IP地址
hosts deny = *
list = false
uid = root
gid = root
auth users = root
secrets file = /etc/client2.pass #自动同步密码文件
保存退出!
新建/etc/client2.pass 文件
#echo "root:123456" >>/etc/client2.pass
chmod 600 /etc/client2.pass
启动rsync服务
#/etc/init.d/xinetd start
三、服务端配置(172.16.32.204)
1.安装rsync
#yum install -y rsync xinetd
在/etc/目录下建立rsyncd.conf配置文件进行编辑
#vim /etc/rsyncd.conf
uid = root
gid = root
use chroot = no
max connections = 100
log file = /var/log/rsyncd.log
pid file = /var/run/rsyncd.pid
lock file = /var/run/rsync.lock
secrets file = /etc/server.pass
[lixuan]
path = /data/lixuan/
auth users = root
list = no
read only = no
secrets file = /etc/servers.pass
comment = server directory
保存退出!
新建/etc/server.pass 文件
#echo "root:123456" >>/etc/server.pass
#chmod 600 /etc/server.pass
启动rsync服务
#/etc/init.d/xinetd start
2. 安装inotify
验证内核是否支持inotify
#uname -r
2.6.32-220.el6.x86_64
#ll /proc/sys/fs/inotify
total 0
-rw-r--r-- 1 root root 0 Jun 11 10:15 max_queued_events #
表示调用inotify_init时分配给inotify instance中可排队的event的数目的最大值
-rw-r--r-- 1 root root 0 Jun 11 10:15 max_user_instances #
表示每一个real user ID可创建的inotify instatnces的数量上限
-rw-r--r-- 1 root root 0 Jun 11 10:15 max_user_watches #
表示每个inotify instatnces可监控的最大目录数量
配置服务端内容发布脚本
#vim /data/sh/inotifyrsync.sh
#!/bin/bash
client1=172.16.32.205
client2=172.16.32.206
src=/data/lixuan/
dst=lixuan
user=root
/usr/local/bin/inotifywait -mrq --timefmt '%d/%m/%y %H:%M' --format '%T %w%f%e' -e close_write,modify,delete,create,attrib $src | while read files
do
/usr/bin/rsync -vzrtopg --delete --progress --password-file=/etc/client.pass $src $user@$client1::$dst
/usr/bin/rsync -vzrtopg --delete --progress --password-file=/etc/client.pass $src $user@$client2::$dst
echo "${files} was rsynced" >>/tmp/rsync.log 2>&1
done
保存退出!
新建/etc/client.pass 文件
#echo "123456" >>/etc/client.pass
#chmod 600 /etc/client.pass
赋予脚本执行权限
#chmod 755 /data/sh/inotifyrsync.sh
后台执行脚本
#sh /data/sh/inotifyrsync.sh &
将此脚本加入开机自启动文件中
#echo "/data/sh/inotifyrsync.sh &" >> /etc/rc.local
四、测试rsync+inotify数据实时同步
在服务端(172.16.32.204)的/data/lixuan/目录中添加删除目录或文件,然后进入客户端(172.16.32.205、172.16.32.206)的/data/lixuan/目录中查看是否和服务端数据实时保持一致。
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