centos6.7 using Nginx for load Balancing!

Implementing the Environment:

VMware Workstation 11

Under the centos6.7 system

Nginx Server: 192.168.239.136 firewall off Setenforce 0

Apache Server 1:192.168.239.138 firewall off Setenforce 0

Apache server 2:192.168.239.139 Firewall off Setenforce 0

SECURECRT (SSH remote connection software)

Software Introduction:

Nginx Introduction
Nginx is a very lightweight HTTP server written by a Russian .
L High-performance HTTP and reverse proxy server, also proxy IMAP/POP3/SMTP server
Nginx has been known for its stability, rich feature set, sample profile, and low system resource consumption since Nginx was released .
l Nginx is specially developed for performance optimization, and performance is the most important consideration, the implementation of which is very focused on efficiency.
L can withstand the test of high load, there are reports that can support up to 50,000 concurrent connections.
l Nginx has high stability, other HTTP servers when encountering spikes in access, or if someone maliciously initiates a slow connection, it is also likely to cause the server to run out of physical memory for frequent exchanges, and the loss of response can only restart the server.
L Low Cost
buy F5 big-IP netscaler hardware load balancer switch Hundreds of thousands of
Nginx based on BSD Open source protocol free, commercially available
l support rewrite rewrite rules
ability to distribute HTTP requests to different back-end server groups based on domain names and URL differences
l built-in health check function
if a Web server on the backend of Nginx proxy goes down, it will not affect the front-end access
Bandwidth Savings
L Support gzip compression
Header for browsing local cache can be added
L High Stability
use reverse proxies, virtually no downtime
• Support for hot deployment
continuous service for updates

Test Flow:

First, Software Installation

[email protected] ~]# Yum install-y nginx

Note: CentOS's official Yum source does not contain nginx, so we want to use Yum to configure the Epel source

You can refer to the following links

Http://www.centoscn.com/CentOS/config/2014/0920/3793.html

Second, Nginx load balancer configuration file modification.

Just change it to my bottom.

HTTP {

Include/etc/nginx/mime.types;

Default_type Application/octet-stream;

Log_format Main ' $remote _addr-$remote _user [$time _local] "$request" '

' $status $body _bytes_sent ' $http _referer '

' "$http _user_agent" "$http _x_forwarded_for";

Access_log/var/log/nginx/access.log main;

Sendfile on;

#tcp_nopush on;

#keepalive_timeout 0;

Keepalive_timeout 65;

#增加的

Upstream Web1 {

Server 192.168.239.139:80 weight=1 max_fails=2 fail_timeout=30s;

Server 192.168.239.138:80 weight=1 max_fails=2 fail_timeout=30s;

}

#增加的

server {

Listen 80;

server_name localhost;

Location/{

Proxy_pass Http://web1;

root HTML;

Index index.html index.htm;

}

}

#gzip on;

# Load config files from the/etc/nginx/conf.d directory

# The default server is in conf.d/default.conf

#include/etc/nginx/conf.d/*.conf; #这里需要注释掉, or it won't work.

}

Third, restart Nginx

[Email protected] ~]#/usr/sbin/nginx-s Reload

Iv. Add a test page above the apache1.

650) this.width=650; "Src=" Http://s3.51cto.com/wyfs02/M01/82/29/wKioL1dNPg-gBf9GAAD2sGHTqSU535.png-wh_500x0-wm_3 -wmp_4-s_3481721318.png "title=" 001.png "alt=" Wkiol1dnpg-gbf9gaad2sghtqsu535.png-wh_50 "/>

V. Add a test page above the Apache2

650) this.width=650; "Src=" Http://s3.51cto.com/wyfs02/M02/82/29/wKioL1dNPlLQVhzRAADLZx9GaE8189.png-wh_500x0-wm_3 -wmp_4-s_2948794752.png "title=" 002.png "alt=" Wkiol1dnpllqvhzraadlzx9gae8189.png-wh_50 "/>

Six, test on my physical machine!

Enter the Nginx IP in the browser

650) this.width=650; "Src=" Http://s3.51cto.com/wyfs02/M01/82/2B/wKiom1dNPibyllGTAAAzjlKuhqs824.png-wh_500x0-wm_3 -wmp_4-s_1075579482.png "style=" Float:none; "title=" 003.png "alt=" Wkiom1dnpibyllgtaaazjlkuhqs824.png-wh_50 "/>

Refresh

650) this.width=650; "Src=" Http://s3.51cto.com/wyfs02/M00/82/2B/wKiom1dNPibxch9kAAA-7Dxh8XU761.png-wh_500x0-wm_3 -wmp_4-s_3768309171.png "style=" Float:none; "title=" 004.png "alt=" Wkiom1dnpibxch9kaaa-7dxh8xu761.png-wh_50 "/>

Thank you

This article from "A few" blog, declined reprint!

centos6.7 using Nginx for load Balancing!