Haproxy安装部署文档

       root@centos-mysql01:/data#tar zxf haproxy-1.7.9.tar.gz

root@centos-mysql01:/data#cd haproxy-1.7.9

root@centos-mysql01:/data#make TARGET=linux31 prefix=/usr/local/haproxy

root@centos-mysql01:/data#make install PREFIX=/usr/local/haproxy

root@centos-mysql01:/data#userdel  -g 1004  haproxy

root@centos-mysql01:/data#useradd  haproxy -u 1004 -d /usr/local/haproxy -s /sbin/nologin  -g haproxy

        root@centos-mysql01:/data#mkdir  /usr/local/haproxy/conf

root@centos-mysql01:/data#mkdir  /usr/local/haproxy/logs

Haproxy配置中分成五部分内容，当然这些组件不是必选的，可以根据需要选择作为配置。

global：参数是进程级的，通常和操作系统(OS)相关。这些参数一般只设置一次，如果配置无误，就不需要再次配置进行修改；

default：配置默认参数的，这些参数可以被利用配置到frontend，backend，listen组件；

frontend：接收请求的前端虚拟节点，Frontend可以根据规则直接指定具体使用后端的backend(可动态选择)；

backend：后端服务集群的配置，是真实的服务器，一个Backend对应一个或者多个实体服务器；

listen：Frontend和Backend的组合体。

mode http #默认的模式mode { tcp|http|health }，tcp是4层，http是7层，health只会返回OK

#retries 2 #两次连接失败就认为是服务器不可用，也可以通过后面设置

option redispatch #当serverId对应的服务器挂掉后，强制定向到其他健康的服务器

option abortonclose #当服务器负载很高的时候，自动结束掉当前队列处理比较久的链接

timeout connect 5000ms #连接超时

timeout client 30000ms #客户端超时

timeout server 30000ms #服务器超时

#timeout check 2000 #=心跳检测超时

log 127.0.0.1 local0 err #[err warning info debug]

balance roundrobin                     #负载均衡算法

#option  httplog                        #日志类别,采用httplog

#option  httpclose   #每次请求完毕后主动关闭http通道,ha-proxy不支持keep-alive,只能模拟这种模式的实现

#option  dontlognull

#option  forwardfor  #如果后端服务器需要获得客户端真实ip需要配置的参数，可以从Http Header中获得客户端ip

root@centos-mysql01:/usr/local/haproxy# cat conf/haproxy.cfg 

#haproxy.cfg

global

log 127.0.0.1   local0

maxconn 4096              #最大连接数

chroot /usr/local/haproxy #安装目录

uid 1004                    #用户haproxy

gid 1004                   #组haproxy

daemon                    #守护进程运行

nbproc 1                  #进程数量

pidfile /usr/local/haproxy/logs/haproxy.pid #haproxy pid

defaults

log     global

mode    http               #7层 http;4层tcp  如果要让haproxy支持虚拟主机，mode 必须设为http 

# option  httplog            #http 日志格式   如果后面listen代理tcp的需要注释掉此项目

log 127.0.0.1 local6

option  httpclose          #主动关闭http通道

option  redispatch         #serverId对应的服务器挂掉后,强制定向到其他健康的服务器

retries 1

option  dontlognull

maxconn 2000                     #最大连接数

timeout connect      3600000     #连接超时(毫秒)

timeout client      3600000      #客户端超时(毫秒)

timeout server      3600000      #服务器超时(毫秒)

frontend  default

option httplog

option httpclose

bind 0.0.0.0:8888

acl haproxy_stats   path_beg /haproxy

use_backend haproxy_stats if haproxy_stats

backend haproxy_stats

stats uri /haproxy

stats enable

stats refresh 60s

#stats auth admin:admin  # 状态页面认证配置

stats admin if TRUE  

frontend hanye

option httplog

option httpclose

mode http

option forwardfor

option forwardfor header Client-IP

option http-server-close

bind *:80

acl web hdr(host) -i web.hz7726.com

acl img hdr(host) -i img.hz7726.com

use_backend webserver if web

use_backend imgserver if img

default_backend  nginx

backend  nginx

balance roundrobin 

server nginx1 192.168.1.124:8080  check inter 2s rise 3 fall 3 weight 3

server nginx2 192.168.1.124:9080  check inter 2s rise 3 fall 3 weight 

backend  webserver

balance roundrobin

option httpchk HEAD /index.html HTTP/1.1\r\nHost:\ web.hz7726.com

server web1 192.168.1.124:8080 cookie   check inter 2s rise 3 fall 3 weight 3

backend imgserver

balance roundrobin

option httpchk HEAD /index.html HTTP/1.1\r\nHost:\ img.hz7726.com

server img1 192.168.1.124:9080 cookie  check inter 2s rise 3 fall 3 weight 3

listen mysql_demo

bind 0.0.0.0:3306

mode tcp

balance roundrobin

server mysql1  192.168.1.39:3306   weight 1 check inter 1s rise 2 fall 2

server mysql2  192.168.1.124:3307  weight 1 check inter 1s rise 2 fall 2

#!/bin/bash

###################################################################

###################################################################

# chkconfig: 35 10 90

export PATH =/ sbin :/ usr / sbin :/ usr / local / sbin :/ usr / local / bin :/ usr / bin :/ bin : $PATH

PROCESS_NAME = haproxy

BASE_DIR =/ usr / local / haproxy

EXEC = $BASE_DIR / sbin / haproxy

PID_FILE = $BASE_DIR / logs / haproxy .pid

DEFAULT_CONF = $BASE_DIR / conf / haproxy .cfg

MONLOG_PATH = "$BASE_DIR/logs/${PROCESS_NAME}_mon.log"

# COLOR print

COLOR_RED = $(     echo - e "\e[31;49m" )

COLOR_GREEN = $(   echo - e "\e[32;49m" )

COLOR_RESET = $(   echo - e "\e[0m"      )

info () { echo "${COLOR_GREEN}$*${COLOR_RESET}"    ;}

warn () { echo "${COLOR_RED}$*${COLOR_RESET}"      ;}

do_log ()

{

local log_fpath = $ 1

local log_content = $ 2

echo "$(date '+%F %T') $log_content" >> $log_fpath

}

print_usage ()

{

echo

info " Usage: $(basename $0) [start|stop|restart|mon|test]"

echo

}

#get Expanding configuration

ext_configs ()

{

CONFIGS =

if [[ - d $BASE_DIR / conf / enabled ]]; then

for FILE in $( find $BASE_DIR / conf / enabled - type l | sort - n )

do

CONFIGS = "$CONFIGS -f $FILE" ;

done

echo $CONFIGS

else

echo

fi

}

# check process status

check_process ()

{

PID = ` get_pid `

if ps aux | awk '{print $2}' | grep - qw $PID 2 >/ dev / null ; then

true

else

false

fi

}

# check Configuration file

check_conf ()

{

$EXEC - c - f $DEFAULT_CONF ` ext_configs ` >/ dev / null 2 >& 1

return $?

}

get_pid ()

{

if [[ - f $PID_FILE ]]; then

cat $PID_FILE

else

warn " $PID_FILE not found!"

exit 1

fi

}

start ()

{

echo

if check_process ; then

warn " ${PROCESS_NAME} is already running!"

else

$EXEC - f $DEFAULT_CONF ` ext_configs ` && \

echo - e " ${PROCESS_NAME} start                        [ `info OK` ]" || \

echo - e " ${PROCESS_NAME} start                        [ `warn Failed` ]"

fi

echo

}

stop ()

{

echo

if check_process ; then

PID = ` get_pid `

kill - 9 $PID >/ dev / null 2 >& 1

echo - e " ${PROCESS_NAME} stop                         [ `info OK` ]"

else

warn " ${PROCESS_NAME} is not running!"

fi

echo

}

restart ()

{

echo

if check_process ; then

:

else

warn " ${PROCESS_NAME} is not running! Starting Now..."

fi

if ` check_conf `; then

PID = ` get_pid `

$EXEC - f $DEFAULT_CONF ` ext_configs ` - st $PID && \

echo - e " ${PROCESS_NAME} restart                      [ `info OK` ]" || \

echo - e " ${PROCESS_NAME} restart                      [ `warn Failed` ]"

else

warn " ${PROCESS_NAME} Configuration file is not valid, plz check!"

echo - e " ${PROCESS_NAME} restart                      [ `warn Failed` ]"

fi

echo

}

mon ()

{

if check_process ; then

info "${PROCESS_NAME} is running OK!"

do _ log $MONLOG_PATH "${PROCESS_NAME} is running OK!"

else

start

warn " ${PROCESS_NAME} not running, start it!"

do _ log $MONLOG_PATH "${PROCESS_NAME} not running, plz check"

fi

}

if [[ $ # != 1 ]]; then

print_usage

exit 1

else

case $ 1 in

"start" | "START" )

start

;;

"stop" | "STOP" )

stop

;;

"restart" | "RESTART" | "-r" )

restart

;;

"status" | "STATUS" )

if check_process ; then

info "${PROCESS_NAME} is running OK!"

else

warn " ${PROCESS_NAME} not running, plz check"

fi

;;

"test" | "TEST" | "-t" )

echo

if check _ conf ; then

info " Configuration file test Successfully."

else

warn " Configuration file test failed."

fi

echo

;;

"mon" | "MON" | "-m" )

mon

;;

* )

print_usage

exit 1

esac

fi

root@centos-mysql01:chmod +x /usr/local/haproxy/sbin/ctrl.sh

root@centos-mysql01:ln -sf /usr/local/haproxy/sbin/ctrl.sh  /etc/init.d/haproxy

root@centos-mysql01:chkconfig haproxy on

启动：service haproxy start

停止：service haproxy stop

重载：service haproxy restart

状态：service haproxy status

检查：service haproxy test

监控：service haproxy mon  # 进程自拉起，如有告警通道可自行加入

listen mysql_demo

bind 0.0.0.0:3306

mode tcp

balance roundrobin

server mysql1  192.168.1.39:3306   weight 1 check inter 1s rise 2 fall 2

server mysql2  192.168.1.124:3307  weight 1 check inter 1s rise 2 fall 2