One, test
Server IP-addr status tool installation system version operation directory
Kefuduan 192.168.1.161 client inotify-tools centos7 / server / backup /
Server 192.168.1.150 server rsync centos7 /server/backup/
Two , placement
1 , a server (server) Configuration
(Server IP) : 192.168.1.150
(1) Install rsync (The backup server only installs rsync and needs to be started)
You can run the command rpm -aq rsync or rsync -v to view, the following information indicates that rsync has been installed
[root@localhost yang]# rpm -qa rsync
rsync-3.1.2-6.el7_6.1.x86_64
(2) If there is no default installation, it is recommended to run the following command
yum install rsync
Create the rsyncd.conf file in the rsync directory you installed and write the following information
[root@localhost ~]# vim /etc/rsyncd.conf
uid = root
gid = root
use chroot = no
max connections = 10
strict modes = yes
hosts allow = 192.168.1.161
port = 873
pid file = /var/run/rsyncd.pid
lock file = /var/run/rsync.lock
log file = /var/log/rsyncd.log
[inotify]
path = /server/backup/
ignore errors
read only = no
write only = no
hosts allow = 192.168.1.161
hosts deny = *
list = false
uid = root
gid = root
auth users = root
secrets file = /etc/rsyncd/rsync.password
(3) Establish user and password authentication files
Use the root user to operate, and the custom password is root @mzla2019 ( this password is not a login password, but a credential for rsync to interact with the client server, which can be customized )
Create rsync.password file and write [Username: Password], remember the password here!
[root@localhost rsyncd]# echo "root:root@mzla2019"> /etc/rsyncd/rsync.password
Need to give the password file 600 permissions
[root@localhost rsyncd]# chmod 600 /etc/rsyncd/rsync.password
(4) Start rsync
Start the rsync server as a daemon
rsync --daemon
[root@localhost rsyncd]# rsync --daemon
[root@ localhost rsyncd] # netstat -nltp |grep rsync can also check whether it is started
2 , (Client) Configuration
( Client IP ) : 192.168.1.161
(1) Install rsync
(2) Establish a password authentication file for accessing the server
Created the directory /etc/rsyncd/
[root@localhost rsyncd]# echo "root@mzla2019" >/etc/rsyncd/rsync.password
#其中 `root@mzla2019` 可以自己设置密码，rsync.password 名字也可以自己设置
设置权限为只读
[root@localhost rsyncd]# chmod 600 rsync.password
（3）安装 inotify-tools
查看当前系统是否支持 inotify
[root@localhost etc]# ll /proc/sys/fs/inotify/
总用量 0
-rw-r--r--. 1 root root 0 12月 5 20:12 max_queued_events
-rw-r--r--. 1 root root 0 12月 5 20:12 max_user_instances
-rw-r--r--. 1 root root 0 12月 5 20:12 max_user_watches
依次执行如下命令
[root@localhost rsyncd]# wget
http://cloud.github.com/downloads/rvoicilas/inotify-tools/inotify-tools-3.14.tar.gz
[root@localhost rsyncd]# tar zxvf inotify-tools-3.14.tar.gz
[root@localhost rsyncd]#cd inotify-tools-3.14
[root@localhos inotify-tools-3.14]# ./configure --prefix=/usr/local/inotify
[root@localhos inotify-tools-3.14]# make
[root@localhos inotify-tools-3.14]# make install
（4） 创建 rsync 复制脚本
此项功能主要是将 client 端的目录 /server/backup/ 里的内容，如果修改了（无论是添加、修改、删除文件）能够通过 inotify 监控到，并通过 rsync 实时的同步给 server 的 /server/backup/ 里
创建 inotify.sh 脚本文件
[root@localhost server]# vim inotify.sh
#!/bin/bash
host=192.168.1.150
src=/server/backup/
des=inotify
password=/etc/rsyncd/rsync.password
user=root
inotify=/usr/local/inotify
${inotify}/bin/inotifywait -mrq --timefmt '%d/%m/%y %H:%M' --format '%T %w%f%e' -e modify,delete,create,attrib $src \
| while read files
do
rsync -avzP --delete --timeout=100 --password-file=${password} $src $user@$host::$des
echo "${files} was rsynced" >>/tmp/rsync.log 2>&1
done
保存文件后，为 .sh 脚本增加 764 权限
[root@localhost server]# chmod 764 inotify.sh
运行脚本
[root@localhost server]# sh inotify.sh &
[1] 1925
echo "setsid /server/inotify.sh &" >> /etc/rc.local
3、 功能测试
192.168.1.161
[root@localhost backup]# touch {1..10}.txt
[root@localhost backup]# ls
10.txt 1.txt 2.txt 3.txt 4.txt 5.txt 6.txt 7.txt 8.txt 9.txt
查看192.168.1.150服务器
[root@localhost ~]# cd /server/backup/
[root@localhost backup]# ls
10.txt 1.txt 2.txt 3.txt 4.txt 5.txt 6.txt 7.txt 8.txt 9.txt