HAProxy安装部署

1、下载安装包

cd /opt
# 下载
wget https://github.com/haproxy/haproxy/releases/tag/v2.6.0
# 解压
tar -xvf haproxy-2.6.0.tar.gz

cd haproxy-2.6.0
# 安装make命令
yum -y install gcc automake autoconf libtool make
# 安装killall命令
yum install psmisc
# 编译
make PREFIX=/opt/haproxy TARGET=linux2628
# 安装
make install PREFIX=/opt/haproxy

2、修改配置

2.1、配置文件

/opt/haproxy/conf/haproxy.cfg

global
        log /opt/haproxy/log    local0
        chroot /opt/haproxy
        stats socket /opt/haproxy/admin.sock mode 660 level admin expose-fd listeners
        stats timeout 30s
        user haproxy
        group haproxy
        daemon
defaults
        log     global
        mode    tcp
        option  dontlognull
        timeout connect 5000
        timeout client  50000
        timeout server  50000
frontend LOADBALANCER-01
    bind  0.0.0.0:8060
    mode tcp
    default_backend WEBSERVERS-01
backend WEBSERVERS-01 #配置三台dble节点
        balance roundrobin
        server      node1 ip1:port1 check   inter 2000 rise 3 fall 3 weight 1 maxconn   2000
        server      node2 ip2:port2 check   inter 2000 rise 3 fall 3 weight 1 maxconn   2000
        server      node3 ip3:port3 check   inter 2000 rise 3 fall 3 weight 1 maxconn   2000

2.2、启动脚本

/opt/haproxy/haproxy.sh

#!/bin/bash
#set -e
export LANG='zh_CN.UTF-8'
source /etc/init.d/functions

#PATH=$PATH:/opt/haproxy/sbin
dir=/opt/haproxy
name=haproxy
DAEMON=$dir/sbin/$name

CONFIG=$dir/conf/$name.cfg
#PIDFILE=$dir/conf/$name.pid
#aa=`ps -ef | grep haproxy | grep -v grep | awk '{print $2}'`


test -x $DAEMON || exit 0

start() {
  $DAEMON -f $CONFIG >/dev/null
  a=$?
  if [ $a -eq 0 ]; then
    action "haproxy服务启动正常"   /bin/true
  fi
}
stop() {
  killall haproxy
  b=$?
  if [ $b -eq 0 ]; then
    action "haproxy服务关闭正常"   /bin/true
  fi
}
restart() {
  [ ! -n $PIDFILE ] && start || stop

  start
}
case "$1" in
start)
  start
  ;;
stop)
  stop
  ;;
restart)
  restart
   ;;
*)
  echo "正确的参数，start|stop|restart"
esac

3、启动

cd /opt/haproxy
sh haproxy.sh start

4、验证

4.1、内部验证

ps -ef |grep haproxy

4.2、外部验证

访问 haproxy的id:8060。
如配置三台server是web服务，会随机访问其中一个

最后

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