haproxy配置及使用

haproxy配置及使用

社区版：https://www.haproxy.org/

企业版：https://www.haproxy.com/

lua官网： https://www.lua.org/download.html

安装haproxy

//安装需要的软件包
[root@DR ~]# yum -y install make gcc pcre-devel bzip2-devel openssl-devel systemd-devel

//创建用户
[root@DR ~]# useradd -r -M -s /sbin/nologin haproxy

//解压haproxy（当前主机提前下载好了）
[root@DR ~]# ls
anaconda-ks.cfg  haproxy-2.3.10.tar.gz
[root@DR ~]# tar xf haproxy-2.3.10.tar.gz 
[root@DR ~]# cd haproxy-2.3.10

//编译安装
[root@DR haproxy-2.3.10]# make clean
[root@DR haproxy-2.3.10]# make -j $(grep 'processor' /proc/cpuinfo |wc -l)  
> TARGET=linux-glibc  
> USE_OPENSSL=1  
> USE_ZLIB=1  
> USE_PCRE=1  
> USE_SYSTEMD=1

[root@DR haproxy-2.3.10]# make install PREFIX=/usr/local/haproxy

[root@DR haproxy-2.3.10]# cp haproxy  /usr/sbin/

配置各个负载的内核参数

[root@DR haproxy-2.3.10]# echo 'net.ipv4.ip_nonlocal_bind = 1' >>  /etc/sysctl.conf
[root@DR haproxy-2.3.10]# echo 'net.ipv4.ip_forward = 1' >> /etc/sysctl.conf
[root@DR haproxy-2.3.10]# sysctl  -p 
net.ipv4.ip_nonlocal_bind = 1
net.ipv4.ip_forward = 1

提供配置文件

[root@DR haproxy-2.3.10]# mkdir /etc/haproxy
[root@DR haproxy-2.3.10]# cat > /etc/haproxy/haproxy.cfg <<EOF
> #--------------全局配置----------------
> global
>     log 127.0.0.1 local0  info
>     #log loghost local0 info
>     maxconn 20480
> #chroot /usr/local/haproxy
>     pidfile /var/run/haproxy.pid
>     #maxconn 4000
>     user haproxy
>     group haproxy
>     daemon
> #---------------------------------------------------------------------
> #common defaults that all the 'listen' and 'backend' sections will
> #use if not designated in their block
> #---------------------------------------------------------------------
> defaults
>     mode http
>     log global
>     option dontlognull
>     option httpclose
>     option httplog
>     #option forwardfor
>     option redispatch
>     balance roundrobin
>     timeout connect 10s
>     timeout client 10s
>     timeout server 10s
>     timeout check 10s
>     maxconn 60000
>     retries 3
> #--------------统计页面配置------------------
> listen admin_stats
>     bind 0.0.0.0:8189
>     stats enable
>     mode http
>     log global
>     stats uri /haproxy_stats
>     stats realm Haproxy Statistics
>     stats auth admin:admin
>     #stats hide-version
>     stats admin if TRUE
>     stats refresh 30s
> #---------------web设置-----------------------
> listen webcluster
>     bind 0.0.0.0:80
>     mode http
>     #option httpchk GET /index.html
>     log global
>     maxconn 3000
>     balance roundrobin
>     cookie SESSION_COOKIE insert indirect nocache
>     server web01 172.16.103.130:80 check inter 2000 fall 5
>     #server web01 192.168.80.102:80 cookie web01 check inter 2000 fall 5
> EOF
[root@DR haproxy-2.3.10]# 

haproxy.service文件编写

[root@DR haproxy-2.3.10]# cat > /usr/lib/systemd/system/haproxy.service <<EOF
> [Unit]
> Description=HAProxy Load Balancer
> After=syslog.target network.target
> 
> [Service]
> ExecStartPre=/usr/local/haproxy/sbin/haproxy -f /etc/haproxy/haproxy.cfg   -c -q
> ExecStart=/usr/local/haproxy/sbin/haproxy -Ws -f /etc/haproxy/haproxy.cfg  -p /var/run/haproxy.pid
> ExecReload=/bin/kill -USR2 $MAINPID
> 
> [Install]
> WantedBy=multi-user.target
> EOF

[root@DR haproxy-2.3.10]# systemctl daemon-reload

启用日志

[root@DR haproxy-2.3.10]# vim /etc/rsyslog.conf
...
local0.*                        /var/log/haproxy.log

systemctl restart rsyslog

启动服务

[root@DR haproxy-2.3.10]# systemctl restart haproxy
[root@DR haproxy-2.3.10]# ss -antl
State     Recv-Q     Send-Q           Local Address:Port           Peer Address:Port     
LISTEN    0          128                    0.0.0.0:22                  0.0.0.0:*        
LISTEN    0          128                    0.0.0.0:8189                0.0.0.0:*        
LISTEN    0          128                    0.0.0.0:80                  0.0.0.0:*        
LISTEN    0          128                       [::]:22                     [::]:* 

 访问haproxy网页界面

[root@DR haproxy-2.3.10]# systemctl stop firewalld
[root@DR haproxy-2.3.10]# setenforce 0

 

 登陆的方式在 /etc/haproxy/haproxy.cfg里面有登录用户和密码，以及访问方式

[root@DR haproxy-2.3.10]# cat /etc/haproxy/haproxy.cfg 
stats uri /haproxy_stats
    stats realm Haproxy Statistics  //访问方式
    stats auth admin:admin   //用户名和密码admin

//网页访问的时候加上（XXX是你的主机IP）
XXX:8189/haproxy_stats