HAproxy,nginx实现七层负载均衡

环境准备：

192.168.88.25  （client）

192.168.88.26    （HAproxy）

192.168.88.27     （web1）

192.168.88.28       (web2)

192.168.88.29     （php1）

192.168.88.30       (php2)

关闭firewalld,selinux。配置yum源，扩展源epel-release

实验1

一、web1,web2

1、下载httpd服务

yum install httpd -y

2、开启httpd服务并且设置开启自启

systemctl start httpd

systemctl enable httpd

二、haproxy主机

1、安装haproxy（192.168.88.26）

 yum install haproxy -y

2、配置HAproxy

vim /etc/haproxy/haproxy.cfg 

globallog 127.0.0.1 local3 infomaxconn 4096uid nobody
#       uid 99gid nobody
#       gid 99daemonnbproc 1pidfile /run/haproxy.pid
defaultslog		   globalmode	   httpmaxconn 2048retries 	3option	redispatchcontimeout	5000clitimeout	    50000srvtimeout	    50000
#timeout connect 5000
#timeout client 50000
#timeout server 50000option abortonclosestats uri /admin?statsstats realm Private landsstats auth admin:passwordstats hide-versionfrontend http-inbind 0.0.0.0:80mode httplog globaloption httplogoption httpcloseacl html url_reg  -i  \.html$use_backend html-server if  htmldefault_backend html-serverbackend html-servermode httpbalance roundrobinoption httpchk GET /index.htmlcookie SERVERID insert indirect nocacheserver html-A web1:80 weight 1 cookie 3 check inter 2000 rise 2 fall 5server html-B web2:80 weight 1 cookie 4 check inter 2000 rise 2 fall 5

3、域名解析

vim /etc/hosts

4、开启HAproxy服务

systemctl start haproxy.service

三、客服端（client）

1、安装elinks

yum install -y elinks

2、域名解析

vim /etc/hosts

3、进行访问测试

实验2

一、192.168.88.29(php1)，192.168.88.30(php2)

1、安装httpd,php

yum install httpd php -y

2、修改php服务默认的网页，方便测试观察

192.168.88.29(php1)

echo php1 > /var/www/html/index.php

192.168.88.30(php2)

echo php2 > /var/www/html/index.php

192.168.88.29（php1），192.168.88.30(php2)开启httpd服务,并且设置开启自启

systemctl start httpd.service

systemctl enable httpd.service

二、192.168.88.26（haproxy）

1、域名解释php1,php2

vim /etc/hosts

2、修改配置文件192.168.88.26（HAproxy）

vim /etc/haproxy/haproxy.cfg

globallog 127.0.0.1 local3 infomaxconn 4096uid nobody
#       uid 99gid nobody
#       gid 99daemonnbproc 1pidfile /run/haproxy.pid
defaultslog                globalmode       httpmaxconn 2048retries         3option  redispatchcontimeout      5000clitimeout          50000srvtimeout          50000
#timeout connect 5000
#timeout client 50000
#timeout server 50000option abortonclosestats uri /admin?statsstats realm Private landsstats auth admin:passwordstats hide-versionfrontend http-inbind 0.0.0.0:80mode httplog globaloption httplogoption httpcloseacl html url_reg  -i  \.html$use_backend html-server if  htmlacl php url_reg  -i  \.php$use_backend php-server if  phpdefault_backend html-serverbackend html-servermode httpbalance roundrobinoption httpchk GET /index.htmlcookie SERVERID insert indirect nocacheserver html-A web1:80 weight 1 cookie 3 check inter 2000 rise 2 fall 5server html-B web2:80 weight 1 cookie 4 check inter 2000 rise 2 fall 5
backend php-servermode httpbalance roundrobinoption httpchk GET /index.phpcookie SERVERID insert indirect nocacheserver php-A php1:80 weight 1 cookie 3 check inter 2000 rise 2 fall 5server php-B php2:80 weight 1 cookie 4 check inter 2000 rise 2 fall 5

3、重启服务haproxy

systemctl restart haproxy.service

4、192.168.88.25（client）访问192.168.88.26（haproxy）进行测试

三、nginx负载均衡

1、192.168.88.26（haproxy）,把haproxy服务删除，替换成nginx进行负载均衡

yum remove -y haproxy

2、安装nginx服务

yum install -y nginx

3、编辑nginx服务配置文件

vim  /etc/nginx/nginx.conf

#http下添加upstream html {server web1:80;server web2:80;}upstream php {server php1:80;server php2:80;}
#server下添加location / {proxy_pass http://html;}location ~ \.php$ {proxy_pass http://php;}

4、192.168.88.25（client）访问192.168.88.26（nginx）进行测试