Nginx启动/重启脚本详解

Nginx手动启动


停止操作


停止操作是通过向nginx进程发送信号（什么是信号请参阅linux文 章）来进行的
步骤1：查询nginx主进程号
ps -ef | grep nginx
在进程列表里 面找master进程，它的编号就是主进程号了。
步骤2：发送信号
从容停止Nginx：
kill -QUIT 主进程号
快速停止Nginx：
kill -TERM 主进程号
强制停止Nginx：
pkill -9 nginx


另外， 若在nginx.conf配置了pid文件存放路径则该文件存放的就是Nginx主进程号，如果没指定则放在nginx的logs目录下。有了pid文 件，我们就不用先查询Nginx的主进程号，而直接向Nginx发送信号了，命令如下：
kill -信号类型 '/usr/nginx/logs/nginx.pid'




命令：/usr/local/nginx/sbin/nginx


若出现：


[root@kangxiaowei ~]# /usr/local/nginx/sbin/nginx
[emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)
[emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)
[emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)
[emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)
[emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)
[emerg]: still could not bind()


则再次执行 /root/lnmp  stop关闭lnmp即可


 


Nginx的开机启动脚本 


开机自动启动nginx，


如果需要开机启动服务，保存好 /etc/init.d/nginx文件后，


执行以下命令:


 代码如下 复制代码 
chkconfig --add ningx


chkconfig --level nginx 2345 on
 


开机自动启动脚本


 代码如下 复制代码 
#! /bin/sh
# chkconfig: 2345 55 25
# Description: Startup script for nginx webserver on Debian. Place in /etc/init.d and
# run 'update-rc.d -f nginx defaults', or use the appropriate command on your
# distro. For CentOS/Redhat run: 'chkconfig --add nginx'


### BEGIN INIT INFO
# Provides:          nginx
# Required-Start:    $all
# Required-Stop:     $all
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts the nginx web server
# Descri()ption:       starts nginx using start-stop-daemon
### END INIT INFO


PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DESC="nginx daemon"
NAME=nginx
DAEMON=/usr/local/platform/nginx/sbin/$NAME
CONFIGFILE=/usr/local/platform/nginx/conf/$NAME.conf
PIDFILE=/usr/local/platform/nginx/logs/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME


set -e
[ -x "$DAEMON" ] || exit 0


do_start() {
 $DAEMON -c $CONFIGFILE || echo -n "nginx already running"
}


do_stop() {
 kill -INT `cat $PIDFILE` || echo -n "nginx not running"
}


do_reload() {
 kill -HUP `cat $PIDFILE` || echo -n "nginx can't reload"
}


case "$1" in
 start)
 echo -n "Starting $DESC: $NAME"
 do_start
 echo "."
 ;;
 stop)
 echo -n "Stopping $DESC: $NAME"
 do_stop
 echo "."
 ;;
 reload|graceful)
 echo -n "Reloading $DESC configuration..."
 do_reload
 echo "."
 ;;
 restart)
 echo -n "Restarting $DESC: $NAME"
 do_stop
 do_start
 echo "."
 ;;
 *)
 echo "Usage: $SCRIPTNAME {start|stop|reload|restart}" >&2
 exit 3
 ;;
esac


exit 0
 


需要你修改的配置有


 代码如下 复制代码 
#! /bin/sh


PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin


 
NAME=nginx
DAEMON=/usr/local/nginx/sbin/$NAME
CONFIGFILE=/usr/local/nginx/conf/$NAME.conf
PIDFILE=/usr/local/nginx/logs/$NAME.pid
 




编辑好后保存，执行以下命令


 代码如下 复制代码 
1 chmod +x /etc/init.d/nginx
 


现在把Nginx加入chkconfig，并设置开机启动。


 代码如下 复制代码 
12 chkconfig --add nginx chkconfig nginx on
 


# 检查一下


 代码如下 复制代码 
1 chkconfig --list nginx 
nginx 0:off 1:off 2:on 3:on 4:on 5:on 6:off
 
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