How to realize automatic synchronization of web pages in Linux

Use multiple web servers to achieve load balancing. In order to maintain the consistency of resources on the front-end web server, updated files can be synchronized to other slave servers (read-only servers) through rsync on the master server (data can be written). , but real-time synchronization cannot be performed automatically. Real-time synchronization can be achieved using inotify

Master server: 192.168.6.205 inotify
Slave server: 192.168.6.36 rsync

1. Configure rsync from the server and enable the rsync service so that the main service can synchronize resources to the server

vim /etc/rsyncd.conf
uid = nginx
gid = nginx
port = 873
host all = 192.168.6.205
use chroot = on
max connections = 4
timeout = yes
[wordpress]
path = /usr/local/ nginx/html/wordpress
comment = rsync files
ignore errors
read only = no
list = yes
auth users = rsync
secrets file = /etc/rsync.passwd

Create /etc/rsync.passwd password configuration file
vim /etc/rsync.passwd
#User:password
rsync:rsync

2. Install inotify-tools on the main server

tar -zxvf inotify-tools-3.14.tar.gz
cd inotify-tools-3.14
./configure –prefix=/usr/local /inotify
make && make install

Configure the rsync password file on the master server to synchronize data to the slave server
vim /etc/rsync.passwd
#Password
rsync

Create script
vim inotifyrsync.sh

#!/bin/bash
host=192.168.6.36
src=/usr/local/nginx/html/ wordpress/
dst=wordpress
user=rsync
inotifywait=/usr/local/inotify/bin/inotifywait
rsync=/usr/bin/rsync
$inotifywait -mrq –timefmt ' %d/%m/%y %h:%m' –format '%t %w%f' -e modify,delete,create,attrib $src | while read files
do
$rsync -vzrtopg –delete –progress –password-file=/etc/rsync.passwd $src $user@$host::$dst
echo "${files} was rsynced" >>/tmp/rsync.log 2> &1
done

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