HAProxy配置

HAProxy简介

HAProxy 是一款基于 TCP（第四层）和 HTTP（第七层）应用的代理软件，它也可作为负载均衡器，而且完全免费。借助 HAProxy，可以快速并且可靠地提供基于 TCP 和 HTTP 应用的代理解决方案。 HAProxy 最主要的优点是性能突出，它特别适合那些负载特大的 Web 站点，这些站点通常需要具备会话保持或七层处理功能。 HAProxy 完全可以支持数以万计的并发连接，而且它的运行模式可以让你简单而安全地将它整合到当前的架构中，同时可以保护你的 Web 服务器不暴露到网络上（通过防火墙 80 端口映射的方法）。

配置要求

用HAProxy搭建http与https的负载集群

环境介绍

主机	IP地址	服务
cst	192.168.209.128	客户机
LB	192.168.209.129	HAProxy
RS1	192.168.209.132	httpd
RS2	192.168.209.133	httpd

环境准备

//LB操作
[root@LB ~]# systemctl disable --now firewalld
[root@LB ~]# sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config
[root@LB ~]# setenforce 0

//RS1操作
[root@RS1 ~]# systemctl disable firewalld.service --now
[root@RS1 ~]# sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config
[root@RS1 ~]# setenforce 0
[root@RS1 ~]# yum -y install httpd
[root@RS1 ~]# systemctl enable httpd --now
[root@RS2 ~]# echo HAProxy-web1 > /var/www/html/index.html

//RS2操作
[root@RS2 ~]# systemctl disable firewalld.service --now
[root@RS2 ~]# sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config
[root@RS2 ~]# setenforce 0
[root@RS2 ~]# yum -y install httpd
[root@RS2 ~]# systemctl enable httpd --now
[root@RS2 ~]# echo HAProxy-web2 > /var/www/html/index.html

编译安装HAProxy

//安装依赖包
[root@LB ~]# yum -y install make gcc pcre-devel bzip2-devel openssl-devel systemd-devel

//创建HAProxy系统用户
[root@LB ~]# useradd -r -M -s /sbin/nologin haproxy

//编译安装HAProxy
此处已准备好安装包
[root@LB ~]# ls
haproxy-2.3.10.tar.gz
[root@LB ~]# tar xf haproxy-2.3.10.tar.gz
[root@LB ~]# cd haproxy-2.3.10/
[root@LB 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@LB haproxy-2.3.10]# make install PREFIX=/usr/local/haprox

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

搭建HTTP负载集群

配置各个负载的内核参数

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

提供配置文件

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

global
    daemon
    maxconn 256

defaults
    mode http
    timeout connect 5000ms
    timeout client 50000ms
    timeout server 50000ms

frontend http-in
    bind *:80
    default_backend servers

backend servers
    server web01 192.168.209.132:80
    server web02 192.168.209.133:80

[root@LB ~]# haproxy -f /etc/haproxy/haproxy.cfg -c
Configuration file is valid

启动

[root@LB ~]# haproxy -f /etc/haproxy/haproxy.cfg

[root@LB ~]# vim /usr/lib/systemd/system/haproxy.service

[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
[root@LB ~]# systemctl daemon-reload
[root@LB ~]# systemctl enable haproxy.service --now

测试

[root@cst ~]# curl http://192.168.209.129
HAProxy-web2
[root@cst ~]# curl http://192.168.209.129
HAProxy-web1
[root@cst ~]# curl http://192.168.209.129
HAProxy-web1
[root@cst ~]# curl http://192.168.209.129
HAProxy-web2

搭建HTTPS负载集群

以上配置操作成功后，进行如下配置

//在RS服务器上安装mod_ssl
[root@RS1 ~]# yum -y install mod_ssl
[root@RS2 ~]# yum -y install mod_ssl

[root@RS1 ~]# systemctl restart httpd
[root@RS1 ~]# ss -antl
State  Recv-Q Send-Q Local Address:Port Peer Address:PortProcess
LISTEN 0      128          0.0.0.0:22        0.0.0.0:*          
LISTEN 0      128                *:80              *:*          
LISTEN 0      128             [::]:22           [::]:*          
LISTEN 0      128                *:443             *:*          

[root@RS2 ~]# systemctl restart httpd
[root@RS2 ~]# ss -antl
State  Recv-Q Send-Q Local Address:Port Peer Address:PortProcess
LISTEN 0      128          0.0.0.0:22        0.0.0.0:*          
LISTEN 0      128             [::]:22           [::]:*          
LISTEN 0      128                *:443             *:*          
LISTEN 0      128                *:80              *:*

修改配置文件

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

global
    log 127.0.0.1 local2  info
    maxconn 20480
    chroot /usr/local/haproxy
    pidfile /var/run/haproxy.pid
    stats socket  /var/lib/haproxy/haproxy.sock mode 600 level admin
    user haproxy
    group haproxy
    daemon
    nbproc 1
    nbthread 4
    spread-checks 5

defaults
    mode http
    log global
    option dontlognull
    option httpclose
    option  http-keep-alive
    option redispatch
    balance roundrobin
    timeout connect 60s
    timeout client 30s
    timeout server 30s
    timeout check 10s
    maxconn 60000
    retries 3

listen https
    bind 0.0.0.0:443
    log global
    mode tcp
    balance  roundrobin 
    server web01 192.168.209.132:443 check inter 2s fall 3 rise 5
    server web02 192.168.209.133:443 check inter 2s fall 3 rise 5

[root@LB ~]# mkdir /var/lib/haproxy
[root@LB ~]# systemctl restart haproxy

测试

[root@cst ~]# curl -k https://192.168.209.129
HAProxy-web1
[root@cst ~]# curl -k https://192.168.209.129
HAProxy-web2
[root@cst ~]# curl -k https://192.168.209.129
HAProxy-web1
[root@cst ~]# curl -k https://192.168.209.129
HAProxy-web2

HAProxy网页界面配置

修改配置文件

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

#--------------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 192.168.209.132:80 check inter 2000 fall 5
    server web02 192.168.209.133:80 check inter 2000 fall 5
    #server web01 192.168.80.102:80 cookie web01 check inter 2000 fall 5

[root@LB ~]# systemctl restart haproxy

//启用日志
[root@LB ~]# vim /etc/rsyslog.conf

……
# Save boot messages also to boot.log
local0.info                                             /var/log/haproxy.log //插入这一行
local7.*                                                /var/log/boot.log

[root@LB ~]# systemctl restart rsyslog

访问测试

访问http://192.168.209.129:8189/haproxy_stats

[root@LB ~]# cat /etc/haproxy/haproxy.cfg
······
#--------------统计页面配置------------------
	stats uri /haproxy_stats  		 //访问方式
    stats realm Haproxy\ Statistics  
    stats auth admin:admin  		 //用户名和密码均为admin

成功进入网页界面

posted @ 2021-05-09 23:25 绫璟阅读(140) 评论(0) 收藏举报

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绫璟

HAProxy配置

HAProxy简介

配置要求

环境准备

编译安装HAProxy

搭建HTTP负载集群

配置各个负载的内核参数

提供配置文件

启动

测试

搭建HTTPS负载集群

修改配置文件

测试

HAProxy网页界面配置

修改配置文件

访问测试

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