The Tomcat process runs a script that monitors and restarts automatically

#!/bin/bash   #author:yuxiaoguang#date:2016/5/22echo  "Start"   url= "/http 127.0.0.1:8090 "  curlit ()   {       #echo  "?? "   curl --connect-timeout 15 --max-time 20 --head --silent  "$URL"  | grep  ' + '   #  above 15 is the connection timeout, if the HTTP service that accesses localhost exceeds 15s and still does not respond correctly to the 200 header code, it is determined to be inaccessible.   }  sleep 10curlit ()   {       #echo   "??"   curl --connect-timeout 15 --max-time 20 --head --silent  "$URL"  | grep  ' + '   #  above 15 is the connection timeout, if the HTTP service that accesses localhost exceeds 15s and still does not respond correctly to the 200 header code, it is determined to be inaccessible.   }  doit ()   {        if !  curlit; then  #  An exception occurs if the Tomcat service on localhost does not return 200 headers normally. Execute the following command:     # echo  "TD"    #sleep &NBsp;20      #top  -n 1 -b >> /var/log/log.log        #kill    ' ps -ef|grep java|grep -v grep |awk  ' { Print $2} '  > /dev/null 2>&1  #  in this statement ps -ef|grep java| Grep -v grep the Java process in the query process to exclude itself from the statement, using awk to find the second column of information, the return state thrown into the black hole.   sleep 2  cd /soft/tomcat/bin/  /bin/sh shutdown.shsleep 2/ bin/sh startup.sh    #echo   "EN"   echo $ (date)   "Tomcat restart " >> /var/log/log.log  #  Write Log   sleep 60  #  Wait after the reboot is complete, and then try again   if  ! curlit; then  #  if you still can't access it,:   echo  "@"   echo $ (date)   "failed!"  >> /var/log/log.log  #  write Tomcat still restarts the failed log   fi  sleep  180  fi  }  sleep 3  #  run the script before it starts to work (prevent a miscarriage due to Tomcat not starting after restarting the server)      #  main loop body   doit  join crontab  Timer Task # Set to detect once every two minutes */2 0 * *  * /home/shell/tomcat-check.sh > /dev/null > 2>&1

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The Tomcat process runs a script that monitors and restarts automatically