生产环境中使用脚本实现tomcat start|status|stop|restart

Posted 2020-09-10 Steward_Xu

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一、在实际生产环境中tomcat启动是在bin目录下采用自带脚本startup.sh启动；使用shutdown.sh关闭。如下图：

　　再如果对于新手来讲在不知道路径情况下重启是一件头痛的事情（注意没有reload，所以重启只能shutdown.sh在startup.sh）；而且这里还有一个坑等着：

什么坑呢？如图：

　　tomcat服务是启动成功了的。那么我想停止服务用shutdown.sh，会出现什么呢？

　　进程还在而且成为了僵尸进程，万恶啊？居然关不了，终极方法kill -9 进程号。试试？

　　终于干掉了。

　　再次启动：

　　OK已经成功；还有一个坑在？请看，服务已经启动，如果我再次执行startup.sh会出现什么呢？

　　请看红色，启动命令能正常执行，而且还能启动一个服务意思是有双服务双进程。万恶啊……

　　好问题来了我们如何简单命令的启动tomcat服务呢？如何让服务启动了再次执行启动就不会执行了呢？ok。shell脚本实现：

二、脚本实现

  1 #!/bin/bash
  2 #############################################
  3 # this script is created by xuxuedong.                                           #
  4 # e_mail:365686746@qq.com                                                      #
  5 # qqinfo:365686746                                                                    #
  6 # This is server start to chkconfig.                                                #
  7 # version:1.1                                                                              #
  8 #############################################
  9 # chkconfig: 2345 92 92
 10 #         description: Saves and restores system entropy pool for \\
 11 #         higher quality random number generatio
 12 
 13 . /etc/init.d/functions
 14 #set env
 15 export PATH=$PATH:/bin:/sbin:/usr/sbin
 16 export LANG="zh_CN.GB18030"
 17 
 18 # Require root to run this script.
 19 if [[ "$(whoami)" != "root" ]]; then
 20      echo "Please run this script as root." >&2
 21      exit 1
 22 fi
 23 
 24 # Source function library.
 25 #. /etc/init.d/functions
 26 if [ ! -f /opt/software/apache-tomcat-7.0.72/bin/startup.sh ]
 27        then
 28             echo "tomcat is not exit.please install."
 29             exit 1
 30 fi
 31 #This is a function for start tomcat
 32 function start(){
 33         if [ `ps -ef |grep java|grep -v grep|grep -v sh|wc -l` -eq 0 ]
 34               then
 35                     /bin/sh /opt/software/apache-tomcat-7.0.72/bin/startup.sh >/dev/null 2>&1
 36                     [ $? -eq 0 ]&&\\
 37                     sleep 1
 38                     action "tmocat start." /bin/true
 39               else
 40                     action "tomcat had been startted." /bin/true
 41                     exit 3
 42         fi
 43 }
 44 #This is a function for stop tomcat
 45 function stop(){
 46         if [ `ps -ef |grep java|grep -v grep|grep -v sh|wc -l` -gt 0  ]
 47                 then
 48                         PID=`ps -ef |grep java|grep -v grep|awk \'{print $2}\'`
 49                         kill -9 $PID
 50                         [ $? -eq 0 ]&&\\
 51                         echo "tomcat is stopping..."
 52                         sleep 1
 53                         action "tomcat  been stoped." /bin/true
 54                  else
 55                         action "tomcat had been stoped." /bin/true
 56                         exit 4
 57         fi
 58 }
 59 #This is a function for restart tomcat
 60 function restart(){
 61         if [ `ps -ef |grep java |grep -v grep|grep -v sh|wc -l` -gt 0  ]
 62                then
 63                  PID1=`ps -ef |grep java|grep -v grep|awk \'{print $2}\'`
 64                         kill -9 $PID1
 65                         [ $? -eq 0 ]&&/bin/sh /opt/software/apache-tomcat-7.0.72/bin/startup.sh >/dev/null 2>&1
 66 
 67                         [ $? -eq 0 ]&&echo "tomcat is restarting..."
 68                         sleep 1
 69                         action "tomcat is restartted ." /bin/true
 70                 else
 71                         action "tomcat is not running,please start." /bin/true
 72                         exit 5
 73         fi
 74 }
 75 #This is a function for status tomcat
 76 function status(){
 77         if [ `ps -ef |grep java |grep -v grep|wc -l` -gt 0  ]
 78                 then
 79                      action "tomcat is running."  /bin/true
 80                 else
 81                       action "tomcat is stopped." /bin/false
 82                       exit 5
 83         fi
 84 }
 85 case $1 in
 86         start)
 87         start
 88 ;;
 89         stop)
 90         stop
 91 ;;
 92         restart)
 93         restart
 94 ;;
 95         status)
 96         status
 97 ;;
 98 
 99         *)
100         echo "USAG:start|stop|restart|status"
101 esa