CentOS7安装HaProxy

一、安装haproxy

//选择yum安装方式安装，目前官方已发布稳定版至2.0，base仓库中的版本为1.5，就做四层端口转发，无所谓
[root@centos-01 ~]# yum install haproxy

二、管理服务

[root@centos-01 ~]# cd /etc/haproxy/
[root@centos-01 haproxy]# cp haproxy.cfg haproxy.cfg.bak
[root@centos-01 haproxy]# vim haproxy.cfg
添加tcp代理
global
    log 127.0.0.1 local2
    chroot /var/lib/haproxy
    pidfile /var/run/haproxy.pid
    maxconn 4000
    user haproxy
    group haproxy
    daemon
    stats socket /var/lib/haproxy/stats 

defaults
    mode tcp
    option dontlognull
    option nolinger
    retries 3
    option redispatch
    fullconn 4096
    timeout connect 10s
    timeout client 1m
    timeout server 1m

    listen FilesUpdate_55535 0.0.0.0:55535
    server app1 192.168.0.146:3306
    listen FilesUpdate_55536 0.0.0.0:55536
    server app1 192.168.0.134:3306

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 3000

    listen app-stats 0.0.0.0:80
    stats refresh 15s
    stats uri /stats
    stats realm haproxy MaraDBServer
    stats auth admin:admin
    stats hide-version
备注：为了方便查看将app1 替换为ip+端口模式方式进行展示

三、启动haproxy

[root@centos-01 haproxy]# systemctl start haproxy.service
[root@centos-01 haproxy]# systemctl enable haproxy.service

四、添加防火墙规则

[root@centos-01 haproxy]# firewall-cmd --zone=public --add-port=55535-56535/tcp --permanent
[root@centos-01 haproxy]# firewall-cmd --zone=public --add-port=80/tcp --permanent
[root@centos-01 haproxy]# firewall-cmd --reload

五、访问

登录http://192.168.5.250/stats admin/admin