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

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

2024-09-14 21:23:41 219人阅读

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：

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　　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：

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　　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？

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　　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？

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　　终于干掉了。

　　再次启动：

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　　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？

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　　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

#!/bin/bash
#############################################
# this script is created by xuxuedong.       #
# e_mail:365686746@qq.com                    #
# qqinfo:365686746                                                                    #
# This is server start to chkconfig.          #
# version:1.1                              #
#############################################
# chkconfig: 2345 92 92
#         description: Saves and restores system entropy pool for \
#         higher quality random number generatio

. /etc/init.d/functions
#set env
export PATH=$PATH:/bin:/sbin:/usr/sbin
export LANG="zh_CN.GB18030"

# Require root to run this script.
if [[ "$(whoami)" != "root" ]]; then
echo "Please run this script as root." >&2
exit 1
fi

# Source function library.
#. /etc/init.d/functions
if [ ! -f /opt/software/apache-tomcat-7.0.72/bin/startup.sh ]
   then
     echo "tomcat is not exit.please install."
     exit 1
fi
#This is a function for start tomcat
function start(){
        if [ `ps -ef |grep java|grep -v grep|grep -v sh|wc -l` -eq 0 ]
                then
                /bin/sh /opt/software/apache-tomcat-7.0.72/bin/startup.sh >/dev/null 2>&1
                [ $? -eq 0 ]&&\
                sleep 1
                action "tmocat start." /bin/true
              else
                action "tomcat had been startted." /bin/true
                exit 3
        fi
}
#This is a function for stop tomcat
function stop(){
        if [ `ps -ef |grep java|grep -v grep|grep -v sh|wc -l` -gt 0 ]
          then
                        PID=`ps -ef |grep java|grep -v grep|awk ‘{print $2}‘`
                        kill -9 $PID
                        [ $? -eq 0 ]&&\
                        echo "tomcat is stopping..."
                        sleep 1
                        action "tomcat been stoped." /bin/true
                else
                        action "tomcat had been stoped." /bin/true
                        exit 4
        fi
}
#This is a function for restart tomcat
function restart(){
        if [ `ps -ef |grep java |grep -v grep|grep -v sh|wc -l` -gt 0 ]
          then
                 PID1=`ps -ef |grep java|grep -v grep|awk ‘{print $2}‘`
                        kill -9 $PID1
                        [ $? -eq 0 ]&&/bin/sh /opt/software/apache-tomcat-7.0.72/bin/startup.sh >/dev/null 2>&1

                        [ $? -eq 0 ]&&echo "tomcat is restarting..."
                        sleep 1
                        action "tomcat is restartted ." /bin/true
                else
                        action "tomcat is not running,please start." /bin/true
                        exit 5
        fi
}
#This is a function for status tomcat
function status(){
        if [ `ps -ef |grep java |grep -v grep|wc -l` -gt 0 ]
          then
                 action "tomcat is running." /bin/true
                else
                        action "tomcat is stopped." /bin/false
                        exit 5
        fi
}
case $1 in
        start)
        start
;;
        stop)
        stop
;;
        restart)
        restart
;;
        status)
        status
;;

        *)
        echo "USAG:start|stop|restart|status"
esac