Linux next smart restart Apache server script sharing

My host is the Centos system. The instructions for each step are written in the notes for easy reading.

vi apachemonitor.sh

#!/bin/bash

URL= " http://127.0.0.1/ " 
curlit()
{
curl  � connect-timeout 15  � max-time 20  � head  � silent  " $URL "  | grep '200 ' 
#  The above 15 Is the connection timeout if accessed localhost the HTTP Service more than 15s Still no correct response 200 The header code is judged to be inaccessible. 
}
doit()
{
if ! curlit; then
#  if localhost the apache The service did not return normally 200 The head, there is an abnormality. Execute the following commands: 
sleep 20
top -n 1 -b >> /var/log/apachemonitor.log
#  The above will be top Write the contents of the command to a solstice file for reference 
/usr/bin/killall -9 apache2 && /usr/bin/killall -9 php5-cgi && /usr/bin/killall -9 httpd

&& /usr/bin/killall -9 http && /usr/bin/killall -9 apache

&& /usr/bin/killall -9 php-cgi > /dev/null
#  Compatibility kills all sorts apache In the process. You can do it on your own apache Service feature modification 
sleep 2
/etc/init.d/apache2 start > /dev/null
/etc/init.d/httpd start > /dev/null
#  For compatibility, two are implemented apache Restart the command and modify it as needed. 
echo $(date)  " Apache Restart "  >> /var/log/apachemonitor.log
#  Written to the log 
sleep 30
#  Wait until the restart is complete 310 Seconds, and then try again 1 time 
if ! curlit; then
#  If it is still not accessible: 
echo $(date)  " Failed! Now Reboot Computer! "  >> /var/log/apachemonitor.log
#  write apache Restart the failed log 
reboot
#  Let's restart the machine. Actually restarting the entire server is 1 A very last resort. I don't recommend it. Everyone according to the need to modify their own, such as SMS, email alarm and so on. 
fi
sleep 180
fi
}
sleep 300
#  After running the script 5 Minutes after the start of formal work (to prevent server restarts due to apache We haven't started building it yet 

 A miscalculation) 
while true; do
#  The main loop body 
doit > /dev/null
sleep 10
done

 Then execute:  chmod +x apachemonitor.sh

 Add startup items: 
vi /etc/rc.d/rc.local

 my rc.local The script content is: 

#!/bin/sh
#
# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don't
# want to do the full Sys V style init stuff.

touch /var/lock/subsys/local
/root/lampmonitor.sh