haproxy七层代理

一.haproxy的基本部署

1.RS上装nginx

[root@webserver1 ~]# dnf install nginx -y

2.再RS上写入测试信息

[root@webserver1 ~]# echo webserver1 - 172.25.254.10 > /usr/share/nginx/html/index.html 
[root@webserver1 ~]# systemctl enable --now nginx

[root@webserver2 ~]# echo webserver2 - 172.25.254.20 > /usr/share/nginx/html/index.html
[root@webserver2 ~]# systemctl enable --now nginx

3.测试

[root@haproxy ~]# curl 172.25.254.10
webserver1 - 172.25.254.10
[root@haproxy ~]# curl 172.25.254.20
webserver2 - 172.25.254.20

4.haproxy服务器下载haproxy软件并开启服务

[root@haproxy ~]# dnf install haproxy -y
[root@haproxy ~]# systemctl enable haproxy.service 

5.写入代理配置参数

[root@haproxy ~]# vim /etc/haproxy/haproxy.cfg 

 以下两种写法均可

#---------------------------------------------------------------------
# main frontend which proxys to the backends
#---------------------------------------------------------------------frontend webclusterbind *:80mode httpuse_backend webcluster-hostbackend webcluster-hostbalance roundrobinserver web1 172.25.254.10:80server web2 172.25.254.20:80

#---------------------------------------------------------------------
# main frontend which proxys to the backends
#---------------------------------------------------------------------listen webclusterbind *:80mode httpbalance roundrobinserver web1 172.25.254.10:80server web2 172.25.254.20:80

6.重启服务

[root@haproxy ~]# systemctl restart haproxy.service 

7.测试

webserver1 - 172.25.254.10
[root@client ~]# curl 172.25.254.100
webserver2 - 172.25.254.20
[root@client ~]# curl 172.25.254.100
webserver1 - 172.25.254.10
[root@client ~]# curl 172.25.254.100
webserver2 - 172.25.254.20
[root@client ~]# curl 172.25.254.100
webserver1 - 172.25.254.10
[root@client ~]# curl 172.25.254.100
webserver2 - 172.25.254.20