一. Linux编译安装haproxy

部署前说明：

(1)系统版本: centos 6.6（64位）

(2)相关中间件信息

haproxy版本信息: haproxy-1.5.15

编译安装haproxy

1.1 到haproxy官网下载haproxy源码包如下

cd ~wget http://www.haproxy.org/download/1.5/src/haproxy-1.5.15.tar.gz

1.2 创建haproxy运行用户

groupadd -r haproxy useradd -g haproxy -M -s /sbin/nologin haproxy

1.3 编译安装haproxy：

cd ~tar zxvf haproxy-1.5.15.tar.gz -C /usr/local/srccd /usr/local/src/haproxy-1.5.15make TARGET=linux26  ARCH=X86_64 PREFIX=/usr/local/haproxymake install PREFIX=/usr/local/haproxy

注意：TARGET=Linux26 是通过uname -a 来查看Linux内核版本的

1.4 创建haproxy主配置文件：

mkdir /etc/haproxy/vim /etc/haproxyhaproxy.cfg

代码内容如下

globallog         127.0.0.1 local2chroot      /var/lib/haproxypidfile     /var/run/haproxy.pidmaxconn     4000user        haproxygroup       haproxydaemonstats socket /var/lib/haproxy/statsdefaultsmode                    httplog                     globaloption                  httplogoption                  dontlognulloption http-server-closeoption forwardfor       except 127.0.0.0/8option                  redispatchretries                 3timeout http-request    10stimeout queue           1mtimeout connect         10stimeout client          1mtimeout server          1mtimeout http-keep-alive 10stimeout check           10smaxconn                 3000frontend  main *:5000acl url_static       path_beg       -i /static /p_w_picpaths /javascript /stylesheetsacl url_static       path_end       -i .jpg .gif .png .css .jsuse_backend static          if url_staticdefault_backend             appbackend staticbalance     roundrobinserver      static 127.0.0.1:4331 checkbackend appbalance     roundrobinserver  app1 127.0.0.1:5001 checkserver  app2 127.0.0.1:5002 checkserver  app3 127.0.0.1:5003 checkserver  app4 127.0.0.1:5004 check

1.4 创建haproxy系统服务启动脚本：

vim /etc/init.d/haproxy

代码内容如下

#!/bin/sh
#
# haproxy
#
# chkconfig:   - 85 15
# description:  HAProxy is a free, very fast and reliable solution \
#               offering high availability, load balancing, and \
#               proxying for TCP and  HTTP-based applications
# processname: haproxy
# config:      /etc/haproxy/haproxy.cfg
# pidfile:     /var/run/haproxy.pid# Source function library.
. /etc/rc.d/init.d/functions# Source networking configuration.
. /etc/sysconfig/network# Check that networking is up.
[ "$NETWORKING" = "no" ] && exit 0exec="/usr/local/haproxy/sbin/haproxy"
prog=$(basename $exec)[ -e /etc/sysconfig/$prog ] && . /etc/sysconfig/$progcfgfile=/etc/haproxy/haproxy.cfg
pidfile=/var/run/haproxy.pid
lockfile=/var/lock/subsys/haproxycheck() {$exec -c -V -f $cfgfile $OPTIONS
}start() {$exec -c -q -f $cfgfile $OPTIONSif [ $? -ne 0 ]; thenecho "Errors in configuration file, check with $prog check."return 1fiecho -n $"Starting $prog: "# start it up here, usually something like "daemon $exec"daemon $exec -D -f $cfgfile -p $pidfile $OPTIONSretval=$?echo[ $retval -eq 0 ] && touch $lockfilereturn $retval
}stop() {echo -n $"Stopping $prog: "# stop it here, often "killproc $prog"killproc $prog retval=$?echo[ $retval -eq 0 ] && rm -f $lockfilereturn $retval
}restart() {$exec -c -q -f $cfgfile $OPTIONSif [ $? -ne 0 ]; thenecho "Errors in configuration file, check with $prog check."return 1fistopstart
}reload() {$exec -c -q -f $cfgfile $OPTIONSif [ $? -ne 0 ]; thenecho "Errors in configuration file, check with $prog check."return 1fiecho -n $"Reloading $prog: "$exec -D -f $cfgfile -p $pidfile $OPTIONS -sf $(cat $pidfile)retval=$?echoreturn $retval
}force_reload() {restart
}fdr_status() {status $prog
}case "$1" instart|stop|restart|reload)$1;;force-reload)force_reload;;check)check;;status)fdr_status;;condrestart|try-restart)[ ! -f $lockfile ] || restart;;*)echo $"Usage: $0 {start|stop|status|restart|try-restart|reload|force-reload}"exit 2
esac

给该脚本授予可以执行的权限并启动haproxy服务：

chmod 777 /etc/init.d/hapoxyservice haproxy start

如果想开机自启动，也可以执行以下命令加入到到开机自启动：

chkconfig --add haproxy chkconfig --level 2345  haproxy on

1.5. haproxy服务启动状态查看

当haproxy服务启动后，我们可以通过netstat -ntlp | grep hapoxy 就可以查看到启动状态

[root@svn haproxy-1.5.15]# netstat -ntlp | grep haproxytcp        0      0 0.0.0.0:5000     0.0.0.0:*   LISTEN     23086/haproxy       [root@svn haproxy-1.5.15]# 

看到以上信息说明haproxy服务已经成功了！

总结:linxu编译安装haproxy有时需要手动编写启动脚本，在centos环境下可以利用自带的RPM来安装haproxy（默认1.5.4版本），而且有自带的配置文件和服务脚本。