Centos 7.6 Install haproxy 1.9

依赖安装
yum install -y wget gcc pcre-static pcre-devel

下载haproxy
wget https://www.haproxy.org/download/1.9/src/haproxy-1.9.7.tar.gz

解压haproxy
tar -zxvf haproxy-1.9.7.tar.gz

编译安装
cd haproxy-1.9.7
make TARGET=linux2628 ARCH=x86_64 PREFIX=/usr/local/haproxy
make install PREFIX=/usr/local/haproxy
cp -rf /root/haproxy-1.9.7/examples/errorfiles /usr/local/haproxy/

设置日志输出
vi /etc/rsyslog.conf
添加#19
$ModLoad imudp
$UDPServerRun 514
$AllowedSender UDP, 127.0.0.1
local2.*                                                /var/log/haproxy.log

重启日志服务生效
systemctl restart rsyslog

创建haproxy配置文件输出
mkdir -p /usr/local/haproxy/conf/
vi /usr/local/haproxy/conf/haproxy.cfg
global
    log 127.0.0.1 local2 info
    chroot /usr/local/haproxy
    pidfile /var/run/haproxy.pid
    maxconn 4096
    #user haproxy
    #group haproxy
    daemon
    stats timeout 2m
    nbproc 1
    
defaults
    mode http
    log global
    option httplog
    option dontlognull
    option http-server-close
    option forwardfor except 127.0.0.0/8
    option redispatch
    retries 3
    timeout http-request 10s
    timeout queue 1m
    timeout connect 10s
    timeout client 1m
    timeout server 1m
    timeout http-keep-alive 10s
    timeout check 10s
    maxconn 51200
    
#stats UI
listen stats
    mode http
    bind 0.0.0.0:1080
    maxconn 10
    stats enable
    stats refresh 10s
    stats uri /haproxystats
    stats hide-version
    stats realm Haproxy\ Statistics
    stats auth admin:admin
    bind-process 1
    stats admin if TRUE
    errorfile 400 /usr/local/haproxy/errorfiles/400.http
    errorfile 403 /usr/local/haproxy/errorfiles/403.http
    errorfile 408 /usr/local/haproxy/errorfiles/408.http
    errorfile 500 /usr/local/haproxy/errorfiles/500.http
    errorfile 502 /usr/local/haproxy/errorfiles/502.http
    errorfile 503 /usr/local/haproxy/errorfiles/503.http
    errorfile 504 /usr/local/haproxy/errorfiles/504.http

# http frontend config
frontend http-in
    bind *:80
    mode http
    log global
    option httpclose
    option logasap
    option dontlognull
    capture request header Host len 30
    capture request header Referer len 60
    default_backend httpservers

# http backend config
backend httpservers
    mode http
    balance roundrobin
    option redispatch
    option forwardfor
    option httpclose
    server          web1 192.168.31.74:9818 check inter 1000
    server          web2 192.168.31.61:2011 check inter 1000

# msql frontend config
frontend msql-in
    bind *:3306
        mode tcp
        log global
        option dontlognull
        default_backend mysql_server

# mssql backend config
backend mysql_server
   mode tcp
   balance roundrobin   #leastconn roundrobin
   option log-health-checks
    server mysql_1 192.168.31.37:3306 weight 1 check
    server mysql_2 192.168.31.50:3306 weight 1 check

添加配置文件软连接
mkdir -p /etc/haproxy/
ln -s /usr/local/haproxy/conf/haproxy.cfg /etc/haproxy/

全局变量
ln -s /usr/local/haproxy/sbin/haproxy /usr/sbin/haproxy

拷贝开机启动文件
cp -r /root/haproxy-1.9.7/examples/haproxy.init /etc/rc.d/init.d/haproxy

添加脚本执行权限
chmod +x /etc/rc.d/init.d/haproxy

设置开机启动
chkconfig --add haproxy
chkconfig haproxy on

启动haproxy服务
systemctl start haproxy

配置文件语法是否正确
haproxy -f /usr/local/haproxy/conf/haproxy.cfg -c

页面测试默认账户admin/admin
http://192.168.31.66:1080/haproxystats