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This article mainly introduces how to configure nginx+rsync+inotify to achieve Load Balancer related knowledge, the content is detailed and easy to understand, the operation is simple and fast, and has certain reference value. I believe everyone will gain something after reading this article on how to configure nginx+rsync+inotify to achieve Load Balancer. Let's take a look at it together.

experimental environment

Front-end nginx: ip 192.168.6.242, reverse proxy for back-end wordpress websites to achieve complex balance

Backend nginx: ip 192.168.6.36, 192.168.6.205 both deploy WordPress and use the same database

1. Configure rsync+inotify on the two wordpress servers on the backend. Both servers turn on rsync service and synchronize data to each other through inotify.

The following configuration 192.168.6.205 server

vim /etc/rsyncd.conf

uid = nginx

gid = nginx

port = 873

host all = 192.168.6.36 #another wordpress using 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_server.passwd #Specify the password of the account, which is used to provide another node to access its own account

vim /etc/rsync_server.passwd

rsync:rsync

vim /etc/rsync_client.passwd

rsync #is used to access another password file used by wordpress

Configure inotify sync script

#!/ bin/bash

host=192.168.6.36 #Another WordPress

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_client.passwd $src $user@$host::$dst

echo "${files} was rsynced" >>/tmp/rsync.log 2>&1

done

2. Configure front-end nginx to implement reverse proxy

vim /usr/local/nginx/conf/nginx.conf

#Add to http section

include vhost/wordpress.conf;

mkdir /usr/local/nginx/confi/vhost

vim /usr/local/nginx/confi/vhost/wordpress.conf

upstream wordpress {

server 192.168.6.205 weight=1;

server 192.168.6.36 weight=1;

}

server {

location / {

proxy_pass http://wordpress;

proxy_redirect off;

proxy_set_header host $host;

proxy_set_header x-real-ip $remote_addr;

}

}

3, modify the settings in wordpress, you must change the site address to the IP address or domain name of the front-end nginx

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