CentOS 7 HAProxy 使用示例

容器云技术

1. 使用yum安装HAProxy

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yum makecache fast
yum install -y haproxy

2. 借助rsyslog配置HAProxy输出日志到文件

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# 编辑/etc/rsyslog.conf
# 启用在udp 514端口接收日志消息
$ModLoad imudp
$UDPServerRun 514

# 以下内容追加到配置文件最后

# Save haproxy log to haproxy.log
local0.*                                                /var/log/haproxy.log

3. 配置HAProxy，这里仅提供一个四层TCP代理的示例，实际中请根据需要修改

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# 备份/etc/haproxy/haproxy.cfg
cp /etc/haproxy/haproxy.cfg /etc/haproxy/haproxy.cfg.bak

# 编辑/etc/haproxy/haproxy.cfg
global
  log 127.0.0.1 local0 debug
  maxconn 50000
  uid 99
  gid 99
  #daemon
  nbproc 1
  pidfile haproxy.pid

defaults
  mode tcp
  log global
  maxconn 50000
  retries 3
  timeout connect 10s
  timeout client 60m
  timeout server 60m

listen stats
  mode http
  bind 0.0.0.0:9090
  log  global
  stats refresh 30s
  stats uri     /haproxy-status
  stats realm   Haproxy\ Statistics
  stats auth    admin:12345678
  stats hide-version
  stats admin if TRUE

frontend remote-tools-xxx-frontend
   mode tcp
   bind :43745
   default_backend remote-tools-xxx-backend

backend remote-tools-xxx-backend
    mode tcp
    balance roundrobin
    server node01 x.x.x.x:43745 weight 3 minconn 100 maxconn 50000 check inter 5000 rise 2 fall 5

4. 启动HAProxy

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systemctl start haproxy.service
systemctl status haproxy.service

5. 参考资料

https://blog.51cto.com/yanconggod/2062213