haproxy配置负载均衡
haproxy配置负载均衡
haproxy介绍
HAProxy 提供高可用性、负载均衡以及基于 TCP 和 HTTP 应用的代理,支持虚拟主机,它是免费、快速并且可靠的一种解决方案.HAProxy 特别适用于那些负载特大的 web 站点, 这些站点通常又需要会话保持或七层处理.HAProxy 运行在当前的硬件上,完全可以支持数以万计的并发连接.并且它的运行模式使得它可以很简单安全的整合进您当前的架构中, 同时可以保护你的 web 服务器不被暴露到网络上.
haproxy安装
在RS配置httpd服务
[root@RS1 ~]# systemctl disable --now firewalld.service
Removed /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
[root@RS1 ~]# getenforce
Disabled
[root@RS1 ~]# yum -y install httpd
[root@RS1 ~]# systemctl enable --now httpd
Created symlink /etc/systemd/system/multi-user.target.wants/httpd.service → /usr/lib/systemd/system/httpd.service.
[root@RS1 ~]# echo "123" > /var/www/html/index.html
[root@RS2 ~]# systemctl disable --now firewalld.service
Removed /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
[root@RS2 ~]# getenforce
Disabled
[root@RS2 ~]# yum -y install httpd
[root@RS2 ~]# systemctl enable --now httpd
Created symlink /etc/systemd/system/multi-user.target.wants/httpd.service → /usr/lib/systemd/system/httpd.service.
[root@RS2 ~]# echo "456" > /var/www/html/index.html
配置DR
[root@DR ~]# systemctl disable --now firewalld.service
Removed /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
[root@DR ~]# getenforce
Disabled
安装服务
[root@DR ~]# yum -y install openssl make gcc pcre-devel bzip2-devel openssl-devel systemd-devel
创建用户
[root@DR ~]# useradd -r -M -s /sbin/nologin haproxy
上传压缩包
[root@DR ~]# ls
公共 视频 文档 音乐 anaconda-ks.cfg initial-setup-ks.cfg
模板 图片 下载 桌面 haproxy-2.4.0.tar.gz
解压压缩包
[root@DR ~]# tar xf haproxy-2.4.0.tar.gz
[root@DR ~]# ls
公共 视频 文档 音乐 anaconda-ks.cfg haproxy-2.4.0.tar.gz
模板 图片 下载 桌面 haproxy-2.4.0 initial-setup-ks.cfg
[root@DR haproxy-2.4.0]# ls
addons CHANGELOG doc include MAINTAINERS reg-tests src VERDATE
admin CONTRIBUTING examples INSTALL Makefile ROADMAP SUBVERS VERSION
BRANCHES dev haproxy LICENSE README scripts tests
[root@DR haproxy-2.4.0]# make clean
[root@DR haproxy-2.4.0]# make -j $(nproc) TARGET=linux-glibc USE_OPENSSL=1 USE_PCRE=1 USE_SYSTEMD=1 //过程省略
[root@DR haproxy-2.4.0]# make install PREFIX=/usr/local/haproxy
配置内核参数
[root@DR ~]# echo 'net.ipv4.ip_nonlocal_bind = 1' >> /etc/sysctl.conf
[root@DR ~]# echo 'net.ipv4.ip_forward = 1' >> /etc/sysctl.conf
[root@DR ~]# sysctl -p
net.ipv4.ip_nonlocal_bind = 1
net.ipv4.ip_forward = 1
提供配置文件
[root@DR ~]# mkdir /etc/haproxy
[root@DR ~]# cd /etc/haproxy/
[root@DR haproxy]# 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 192.168.145.170:80 check inter 2000 fall 5
#server web02 192.168.145.171:80 cookie web01 check inter 2000 fall 5
EOF
haproxy.service文件编写
[root@DR ~]# 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 ~]# systemctl daemon-reload
开启日志
[root@DR ~]# vim /etc/rsyslog.conf
local0.* /var/log/haproxy.log 加入此行
设置开机自启
[root@DR ~]# systemctl enable --now haproxy
Created symlink /etc/systemd/system/multi-user.target.wants/haproxy.service → /usr/lib/systemd/system/haproxy.service.
[root@DR ~]# systemctl status haproxy.service
● haproxy.service - HAProxy Load Balancer
Loaded: loaded (/usr/lib/systemd/system/haproxy.service; enabled; vendor preset: >
Active: active (running) since Mon 2021-10-18 02:01:59 CST; 5s ago
Process: 106583 ExecStartPre=/usr/local/haproxy/sbin/haproxy -f /etc/haproxy/hapro>
Main PID: 106585 (haproxy)
Tasks: 2 (limit: 23862)
Memory: 7.7M
CGroup: /system.slice/haproxy.service
├─106585 /usr/local/haproxy/sbin/haproxy -Ws -f /etc/haproxy/haproxy.cfg >
└─106588 /usr/local/haproxy/sbin/haproxy -Ws -f /etc/haproxy/haproxy.cfg >
10月 18 02:01:59 DR systemd[1]: Starting HAProxy Load Balancer...
10月 18 02:01:59 DR systemd[1]: Started HAProxy Load Balancer.
10月 18 02:01:59 DR haproxy[106585]: [NOTICE] (106585) : New worker #1 (106588) fo>
[root@DR ~]# ss -antl
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 32 192.168.122.1:53 0.0.0.0:*
LISTEN 0 128 0.0.0.0:22 0.0.0.0:*
LISTEN 0 5 127.0.0.1:631 0.0.0.0:*
LISTEN 0 128 0.0.0.0:8189 0.0.0.0:*
LISTEN 0 128 0.0.0.0:111 0.0.0.0:*
LISTEN 0 128 0.0.0.0:80 0.0.0.0:*
LISTEN 0 128 [::]:22 [::]:*
LISTEN 0 5 [::1]:631 [::]:*
LISTEN 0 128 [::]:111 [::]:*
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证书生成
[root@RS1 ~]# yum -y install openssl Updating Subscription Management repositories. Unable to read consumer identity This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. 上次元数据过期检查：0:14:21 前，执行于 2021年10月18日 星期一 13时33分07秒。 Package openssl-1:1.1.1-8.el8.x86_64 is already installed. 依赖关系解决。 无需任何处理。 完毕！ [root@RS1 ~]# mkdir ~/keys [root@RS1 ~]# cd keys/ [root@RS1 keys]# openssl genrsa -out passport.com.key 2048 Generating RSA private key, 2048 bit long modulus (2 primes) ...............................................+++++ .....+++++ e is 65537 (0x010001) [root@RS1 keys]# openssl req -new -key passport.com.key -out passport.com.csr You are about to be asked to enter information that will be incorporated into your certificate request. What you are about to enter is what is called a Distinguished Name or a DN. There are quite a few fields but you can leave some blank For some fields there will be a default value, If you enter '.', the field will be left blank. ----- Country Name (2 letter code) [XX]:cn State or Province Name (full name) []:hb Locality Name (eg, city) [Default City]:wh Organization Name (eg, company) [Default Company Ltd]:zs Organizational Unit Name (eg, section) []:test Common Name (eg, your name or your server's hostname) []:localhost Email Address []: Please enter the following 'extra' attributes to be sent with your certificate request A challenge password []:zs123 An optional company name []: [root@RS1 keys]# openssl x509 -req -days 3650 -in passport.com.csr -signkey passport.com.key -out passport.com.crt Signature ok subject=C = cn, ST = hb, L = wh, O = zs, OU = test, CN = localhost Getting Private key [root@RS1 keys]# ls passport.com.crt passport.com.csr passport.com.key 将文件传输到RS2上面去 [root@RS1 keys]# scp passport.com.crt passport.com.key 192.168.145.171:/root/ The authenticity of host '192.168.145.171 (192.168.145.171)' can't be established. ECDSA key fingerprint is SHA256:t40x15ktcpMljOGJDYGl/mBzhl7pKNTCrzQ4D5mLaos. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '192.168.145.171' (ECDSA) to the list of known hosts. root@192.168.145.171's password: passport.com.crt 100% 1172 2.9MB/s 00:00 passport.com.key 100% 1679 4.8MB/s 00:00 [root@RS2 ~]# ls 公共 视频 文档 音乐 anaconda-ks.cfg passport.com.crt 模板 图片 下载 桌面 initial-setup-ks.cfg passport.com.key RS1和RS2上配置https RS1 [root@RS1 ~]# yum -y install mod_ssl [root@RS1 ~]# mkdir /etc/httpd/ssl [root@RS1 keys]# mv passport.com.* /etc/httpd/ssl/ [root@RS1 keys]# cd /etc/httpd/ssl/ [root@RS1 ssl]# ls passport.com.crt passport.com.csr passport.com.key [root@RS1 ssl]# cd .. [root@RS1 httpd]# ls conf conf.d conf.modules.d logs modules run ssl state [root@RS1 httpd]# cd conf.d/ [root@RS1 conf.d]# ls autoindex.conf README ssl.conf userdir.conf welcome.conf [root@RS1 conf.d]# vim ssl.conf DocumentRoot "/var/www/html" //去掉注释 ServerName www.example.com:443 //去掉注释 SSLCertificateFile /etc/httpd/ssl/passport.com.crt //修改文件位置 SSLCertificateKeyFile /etc/httpd/ssl/passport.com.key //修改文件位置 重启 [root@RS1 ~]# systemctl restart httpd [root@RS1 ~]# ss -antl State Recv-Q Send-Q Local Address:Port Peer Address:Port LISTEN 0 32 192.168.122.1:53 0.0.0.0:* LISTEN 0 128 0.0.0.0:22 0.0.0.0:* LISTEN 0 5 127.0.0.1:631 0.0.0.0:* LISTEN 0 128 0.0.0.0:111 0.0.0.0:* LISTEN 0 128 [::]:22 [::]:* LISTEN 0 5 [::1]:631 [::]:* LISTEN 0 128 *:443 *:* LISTEN 0 128 [::]:111 [::]:* LISTEN 0 128 *:80 *:* RS2 [root@RS2 ~]# yum -y install mod_ssl [root@RS2 ~]# mkdir /etc/httpd/ssl [root@RS2 ~]# mv passport.com.* /etc/httpd/ssl/ [root@RS2 ~]# cd /etc/httpd/ssl/ [root@RS2 ssl]# ls passport.com.crt passport.com.key [root@RS2 ssl]# cd .. [root@RS2 httpd]# ls conf conf.d conf.modules.d logs modules run ssl state [root@RS2 httpd]# cd conf.d/ [root@RS2 conf.d]# ls autoindex.conf README ssl.conf userdir.conf welcome.conf [root@RS2 conf.d]# vim ssl.conf DocumentRoot "/var/www/html" //去掉注释 ServerName www.example.com:443 //去掉注释 SSLCertificateFile /etc/httpd/ssl/passport.com.crt //修改文件位置 SSLCertificateKeyFile /etc/httpd/ssl/passport.com.key //修改文件位置 重启 [root@RS2 ~]# systemctl restart httpd [root@RS2 ~]# ss -antl State Recv-Q Send-Q Local Address:Port Peer Address:Port LISTEN 0 32 192.168.122.1:53 0.0.0.0:* LISTEN 0 128 0.0.0.0:22 0.0.0.0:* LISTEN 0 5 127.0.0.1:631 0.0.0.0:* LISTEN 0 128 0.0.0.0:111 0.0.0.0:* LISTEN 0 128 [::]:22 [::]:* LISTEN 0 5 [::1]:631 [::]:* LISTEN 0 128 *:443 *:* LISTEN 0 128 [::]:111 [::]:* LISTEN 0 128 *:80 *:* 修改配置文件 [root@DR haproxy]# vim haproxy.cfg [root@DR haproxy]# cat 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 tcp //修改为tcp 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 0.0.0.0:443 端口修改为443 mode tcp 修改为tcp #option httpchk GET /index.html log global maxconn 3000 balance roundrobin server web01 192.168.145.170:443 //修改端口443 check inter 2000 fall 5 server web02 192.168.145.171:443 //修改端口443 cookie web01 check inter 2000 fall 5 重启服务 [root@DR ~]# systemctl restart haproxy.service
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