Shell編程實現Haproxy負載平衡叢集的啟動和關閉管理

#!/bin/bash

#-------------------------Haproxy Server Management Shell script------------------------------------------------

#Authors are from JC

#time:2012-10-10

#QQ：408822635

#from  the region Beijng.China.

#-------------------------Haproxy Server Management Shell script------------------------------------------------

case "$1" in

start)

BASE="/usr/local/haproxy/sbin/haproxy"

haproxy=`netstat -lntp|grep haproxy|wc -l`

if [ $haproxy -gt 0 ];then

 echo "正在檢測中，請稍候......"

sleep 3

 echo "-----------------------------Haproxy負載平衡叢集---------------------------------------"

 echo "|                                                                                     |"

 echo "|                        已經在運行狀態中，無需要啟動                                 |"

 echo "|                                                                                     |"

 echo "-----------------------------Haproxy負載平衡叢集---------------------------------------"

else

for  haproxy in /usr/local/haproxy/etc/haproxy.cfg

do

   $BASE  -f  $haproxy >/dev/null 2>&1

done

      echo "Haproxy負載平衡正在啟動......"

sleep 3

      echo "-------------------------------Haproxy負載平衡叢集已經啟動完成-------------------------------------------"

      netstat -lntp|grep haproxy

      echo "-------------------------------Haproxy負載平衡叢集列表---------------------------------------------------"

fi

;;

stop)

BASE="/usr/local/haproxy/sbin/haproxy"

haproxy=`netstat -lntp|grep haproxy|wc -l`

if [ $haproxy == $? ];then

 echo "正在檢測中，請稍候......"

sleep 2

 echo "Haproxy已經關閉，無需要再關閉"

 echo "Haproxy已經關閉，無需要再關閉"

else

   echo "Haproxy負載平衡服務正在關閉，請稍後.........."

sleep 2

    for PIDFILE in /usr/local/haproxy/haproxy.pid

do

       kill $(cat $PIDFILE) >/dev/null 2>&1

done

         echo "Haproxy負載平衡叢集服務已經關閉完成.....................done"

sleep 1

  fi

 ;;

status)

haproxy=`netstat -lntp|grep haproxy|wc -l`

if [ $haproxy -gt 0 ];then

echo  "Haproxy正在運行中..................OK"

 else

       echo "Haproxy已經是關閉狀態...................stop"

fi

 ;;

restart)

BASE=/usr/local/haproxy/sbin/haproxy

CONFFILE=/usr/local/haproxy/etc/haproxy.cfg

echo  "Haproxy正在重新啟動，請稍等......................................."

   for PIDFILE in /usr/local/haproxy/haproxy.pid

do

       $BASE -f $CONFFILE -sf $(cat $PIDFILE) >/dev/null

done

       echo "Haproxy負載平衡服務已經重新啟動成功，請查看............................"

sleep  2

       echo "--------------------------------------------------------Haproxy重新啟動後的進程數------------------------------------------------------------------------------------------------------"

       ps -ef|grep haproxy

       echo "--------------------------------------------------------Haproxy進程列表-------------------------------------------------------------------------------------------------"

;;

*)

echo "Usage: $haproxy {start|stop|status|restart}"

       RETVAL=3

       ;;

esac

exit $RETVAL

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