HAProxy实现httpd的负载均衡

1.在官网下载压缩包

2.解压压缩包

tar zxf haproxy-1.7.3.tar.gz

注：压缩包解压后里面如果有.spec文件就可以做成.rpm安装包

cd haproxy-1.7.3
find . -name *.spec

3.安装rpmbuild

yum install rpm-build -y

4.安装其他必须的软件

yum install gcc -y
yum install pcre-devel -y

5.制作安装包

rpmbuild -tb haproxy-1.7.3.tar.gz		##制作安装包

制作好的安装包会在 rpmbuild/RPMS/x86_64/

6.安装

[root@server1 ~]# cd rpmbuild/RPMS/x86_64/
[root@server1 x86_64]# ls
haproxy-1.7.3-1.x86_64.rpm
[root@server1 x86_64]# yum install haproxy-1.7.3-1.x86_64.rpm -y

7.复制配置文件

cp haproxy-1.7.3/examples/content-sw-sample.cfg /etc/haproxy/haproxy.cfg

8.修改配置文件

vim /etc/haproxy/haproxy.cfg
global
        maxconn         65535
        stats socket    /var/run/haproxy.stat mode 600 level admin
        log             127.0.0.1 local0
        uid             200
        gid             200
        chroot          /var/empty
        daemon

defaults
        mode            http
        log             global
        option          httplog
        option          dontlognull
        monitor-uri     /monitoruri
        maxconn         8000
        timeout client  30s
        retries         2
        option  redispatch
        timeout connect 5s
        timeout server  5s

        
        stats uri    /admin/stats

# The public 'www' address in the DMZ

frontend public
        bind            172.25.80.1:80 name clear
        #bind            192.168.1.10:443 ssl crt /etc/haproxy/haproxy.pem
        #use_backend     static if { hdr_beg(host) -i img }
        #use_backend     static if { path_beg /img /css   }
        default_backend dynamic



# The static backend backend for 'Host: img', /img and /css.

backend dynamic

       # mode            http
        balance         roundrobin
        server          web1 172.25.80.2:80 check inter 1000
        server          web3 172.25.80.3:80 check inter 1000

9.开启服务

[root@server1 ~]# /etc/init.d/haproxy start
Starting haproxy:                                          [  OK  ]

10.开启server2和server3的httpd，编写默认发布页

[root@server2 ~]# /etc/init.d/httpd start
Starting httpd: httpd: Could not reliably determine the server's fully qualified domain name, using 172.25.10.2 for ServerName
                                                           [  OK  ]
vim /var/www/html/index.html
server2
vim /var/www/html/index.html
server3

11.测试

12.在浏览器测试

172.25.80.1/monitoruri

172.25.10.1/admin/stats

13.设置管理密码

vim /etc/haproxy/haproxy.cfg 
        option  redispatch
        timeout connect 5s
        timeout server  5s

        stats uri    /admin/stats

        stats   auth    admin:redhat			##设置管理员和密码

        stats   refresh 5s			##刷新时间

14.设置黑名单

vim /etc/haproxy/haproxy.cfg

        acl     blacklist       src     172.25.80.250

        http-request deny if blacklist

        default_backend dynamic

15.页面的动静分离

vim /etc/haproxy/haproxy.cfg

        #acl    blacklist       src     172.25.80.250

        #http-request deny if blacklist

        use_backend     dynamic if { path_end .php }		##结尾为.php时为动态
        default_backend static		##默认为静态



# The static backend backend for 'Host: img', /img and /css.

backend static				##静态时访问server2
        balance         roundrobin
        server          web2 172.25.80.2:80 check inter 1000


backend dynamic				##动态时访问server3
        balance         roundrobin
        server          web3 172.25.80.3:80 check inter 1000

对server3的修改

yum install php -y
vim /var/www/html/index.php
<?php
        phpinfo()
?>

/etc/init.d/httpd restart

16.测试