1.简介


1.1inotify

  一个 Linux 内核特性,它监控文件系统,并且及时向专门的应用程序发出相关的事件警告,比如删除、读、写和卸载操作等。


2.环境准备

[root@nfs01 ~]# cat /etc/redhat-release 

CentOS Linux release 7.2.1511 (Core) 

[root@nfs01 ~]# uname -r

3.10.0-327.el7.x86_64

[root@nfs01 ~]# getenforce 

Disabled

[root@nfs01 ~]# systemctl status firewalld.service 

● firewalld.service - firewalld - dynamic firewall daemon

   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)

   Active: inactive (dead)

[root@nfs01 ~]# ifconfig

eth0: flags=4163  mtu 1500

        inet 10.0.0.31  netmask 255.255.255.0  broadcast 10.0.0.255

        inet6 fe80::20c:29ff:fe7a:66a4  prefixlen 64  scopeid 0x20

        ether 00:0c:29:7a:66:a4  txqueuelen 1000  (Ethernet)

        RX packets 1195  bytes 283633 (276.9 KiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 198  bytes 24332 (23.7 KiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0


eth1: flags=4163  mtu 1500

        inet 172.16.1.31  netmask 255.255.255.0  broadcast 172.16.1.255

        inet6 fe80::20c:29ff:fe7a:66ae  prefixlen 64  scopeid 0x20

        ether 00:0c:29:7a:66:ae  txqueuelen 1000  (Ethernet)

        RX packets 0  bytes 0 (0.0 B)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 10  bytes 744 (744.0 B)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0


lo: flags=73  mtu 65536

        inet 127.0.0.1  netmask 255.0.0.0

        inet6 ::1  prefixlen 128  scopeid 0x10

        loop  txqueuelen 0  (Local Loopback)

        RX packets 0  bytes 0 (0.0 B)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 0  bytes 0 (0.0 B)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0


3.NFS服务器部署inotify服务


3.1安装inotify

[root@nfs01 ~]# yum install -y inotify-tools


3.2编写实时同步脚本

[root@nfs01 ~]# cat /server/scripts/inotify.sh

#!bin/bash

inotifywait -mrq --format "%w%f" -e create,close_write,delete,moved_to /data/|\

while read zy

do

rsync -az /data/ --delete [email protected]::backup --password-file=/etc/rsync.password

done


4.测试


4.1运行脚本

[root@nfs01 ~]# sh /server/scripts/inotify.sh


4.2在NFS服务器的/data目录创建测试文档

[root@nfs01 data]# touch test.txt

[root@nfs01 data]# ls

test.txt


4.3rsync服务器的/backup目录查看

[root@backup ~]# ls /backup/

test.txt