Linux 一个sysv 脚本参考模板

说明：

　  1.很多时候我们的服务都是通过源码包编译安装，但是有的源码包编译完成后并不提供该服务的sysv风格脚本，我们只能手动执其二进制程序+配置文件

     2.如果服务器宕机或重启，就不能自动完成启动，所以我们需要自己来编写脚本并把它放到/etc/init.d/目录，并使用chkconfig --add $service 加入开机启动列表

     3.以下脚本是httpd的一个sysv脚本，不过所有的基本sysv风格脚本都一个风格，你只需要把对httpd的判断改成对你编译的程序判断即可

     4.此脚本也可以source /etc/init.d/functions 脚本，functions为我们提供了三个常用的功能，不过以下的这个脚本没有source

　　　　a.输出打印显示为统一格式

           b.daemon 函数  Usage: daemon [+/-nicelevel] {program} 可以向其传递选项 常用的 --user， --pidfile

               例: daemon --user=mysql  /usr/local/mysql/bin/mysqld --defaults-file=/etc/my.cnf

　　　　c.killproc 函数 Usage: killproc [-p pidfile] [ -d delay] {program} [-signal]

               例：killproc -p /var/run/mysql /usr/local/mysql/bin/mysqld -HUP  # reload 功能

     5.开启服务程序的reload功能需要，此服务的二进制程序支持接SIGHUP，否则向此服务发出sighup，只能关闭进程，而不能重读配置文件，httpd能够接收hup信号

#!/bin/bash
#
# HTTPD 2.4: Start up the Atlas server daemon
# chkconfig 2345 87 13
# discription: Apache web server for linux
# author: 
#    QQ: 765482322
#    mail: login_532_gajun@sina.com

install_dir=/usr/local/apache24/instance/httpd80
apachectl=$install_dir/bin/apachectl
binfile=$install_dir/bin/httpd
pidfile=$install_dir/run/httpd.pid
confile=$install_dir/etc/httpd24/httpd.conf
lockfile=$install_dir/lock/httpd
prog=${install_dir##*/}

function start()
{
    if ps -ef | grep "$binfile -f $confile" | grep -q -v "grep" && [ -f $lockfile ];then
        echo -e "33[32mNotice: $prog is running now33[0m"
        return 0
    else
        $binfile -f $confile
            if ps -ef | grep "$binfile -f $confile" | grep -q -v "grep";then
                touch $lockfile
                 echo -e "33[32mOK: $prog is started33[0m"
                return 0
            else
                echo -e "33[31mError: Failed to start $prog33[0m"
                return 2
            fi
    fi
}

function stop()
{
      
    if ps -ef | grep "$binfile -f $confile" | grep -q -v "grep" && [ -f $lockfile ];then
         ps -ef | grep "$binfile -f $confile" | grep -v "grep" | awk '{print $2}' | xargs kill -9 > /dev/null 2>&1
            if [ $? -eq 0 ];then
                rm -f $lockfile
                echo -e "33[32mOK: $prog is stopped33[0m"
                return 0
            else
                echo -e "33[31mError: Failed to stop $prog33[0m"
                return 2
            fi
    else
        echo -e "33[31mWarning: $prog is not running33[0m"
        return 0
    fi
}

function restart()
{
    stop
    sleep 1
    start
}

function status()
{
    if ps -ef | grep "$binfile -f $confile" | grep -q -v "grep" && [ -f $lockfile ];then
        ps -ef | grep "$binfile -f $confile" | grep -v "grep" | awk '{print $2}' | while read httpd_pid;do
            echo -e "33[32mOK: $prog is running ($httpd_pid)33[0m"
        done
        return 0
    else
        echo -e "33[31mWarning: $prog is not running33[0m"
        return 2
    fi
}

function configtest()
{
    $apachectl -t -f $confile
}

function reload()
{
    status &> /dev/null
    if [ $? -eq 0 ];then
        if $apachectl -t -f $confile &> /dev/null;then
            ps -ef | grep "$binfile -f $confile" | grep -v "grep" | awk '$1 == "root"{print $2}' | while read httpd_root_pid;do
                kill -HUP $httpd_root_pid
            done
            if [ $? -eq 0 ] && ps -ef | grep "$binfile -f $confile" | grep -q -v "grep";then
                echo -e "33[32mOK: reload $prog is successful33[0m"
                return 0
            else
                echo -e "33[31mError: Failed to reload $porg33[0m"
                return 2
            fi
        else
            echo -e "33[31mError: not reloading $prog due to configuration syntax error33[0m"
            return 2
        fi
    else
        start &> /dev/null
        if [ $? -eq 0 ];then
            echo -e "33[32mOK: reload $prog is successful33[0m"
            return 0
        else 
            echo -e "33[31mError: Failed to reload $porg33[0m"
            return 2
        fi
    fi
}        

case $1 in
start)
    start
    if [ $?    -eq 2 ];then
        exit 2
    fi
    ;;

stop)
    stop
    if [ $?    -eq 2 ];then
        exit 2
    fi
    ;;

restart)
    restart
    if [ $? -eq 2 ];then
        exit 2
    fi
    ;;

reload)
    reload
    if [ $? -eq 2 ];then
        exit 2
    fi
    ;;

status)
    status
    ;;

configtest)
    configtest
    ;;

*)
    echo -e "33[31mUsage: `basename $0` {start|stop|restart|reload|status|configtest}33[0m"                
    exit 2
esac