Create nginx scripts under Linux-start, stop, reload..., nginx-start

Create nginx scripts under Linux-start, stop, reload..., nginx-start_PHP tutorial

WBOY

Release： 2016-07-13 10:21:31

Original

1312 people have browsed it

Linux下创建nginx脚本-start、stop、reload…，nginx-start

1、关闭nginx
利用ps -aux | grep nginx 查看nginx是否启动如果启动了就kill杀死
2、创建/etc/init.d/nginx文件

root@dnnp:~/software/nginx-1.2.3# vim /etc/init.d/nginx

Copy after login

3、添加权限并启动

root@dnnp:~/software/nginx-1.2.3# chmod +x /etc/init.d/nginx
root@dnnp:~/software/nginx-1.2.3# /etc/init.d/nginx start
Starting nginx: nginx.
root@dnnp:~/software/nginx-1.2.3# ps -aux | grep nginx
Warning: bad ps syntax, perhaps a bogus '-'&#63; See http://procps.sf.net/faq.html
root   25078 0.0 0.0  4596  700 &#63;    Ss  14:20  0:00 nginx: master process /usr/local/nginx/sbin/nginx
nobody  25079 0.0 0.1  4820 1056 &#63;    S  14:20  0:00 nginx: worker process
root   25081 0.0 0.0  3304  768 pts/0  S+  14:20  0:00 grep nginx
root@dnnp:~/software/nginx-1.2.3#

Copy after login

注：/etc/init.d/nginx文件内容如下

#! /bin/sh
 
### 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
# Description:    starts nginx using start-stop-daemon
### END INIT INFO
 
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/local/nginx/sbin/nginx
NAME=nginx
DESC=nginx
 
test -x $DAEMON || exit 0
 
# Include nginx defaults if available
if [ -f /etc/default/nginx ] ; then
  . /etc/default/nginx
#    . /usr/local/nginx/conf
fi
 
set -e
 
. /lib/lsb/init-functions
 
case "$1" in
 start)
  echo -n "Starting $DESC: "
  start-stop-daemon --start --quiet --pidfile /usr/local/nginx/logs/$NAME.pid \
    --exec $DAEMON -- $DAEMON_OPTS || true
  echo "$NAME."
  ;;
 stop)
  echo -n "Stopping $DESC: "
  start-stop-daemon --stop --quiet --pidfile /usr/local/nginx/logs/$NAME.pid \
    --exec $DAEMON || true
  echo "$NAME."
  ;;
 restart|force-reload)
  echo -n "Restarting $DESC: "
  start-stop-daemon --stop --quiet --pidfile \
    /usr/local/nginx/logs/$NAME.pid --exec $DAEMON || true
  sleep 1
  start-stop-daemon --start --quiet --pidfile \
    /usr/local/nginx/logs/$NAME.pid --exec $DAEMON -- $DAEMON_OPTS || true
  echo "$NAME."
  ;;
 reload)
   echo -n "Reloading $DESC configuration: "
   start-stop-daemon --stop --signal HUP --quiet --pidfile /usr/local/nginx/logs/$NAME.pid \
     --exec $DAEMON || true
   echo "$NAME."
   ;;
 status)
   status_of_proc -p /usr/local/nginx/logs/$NAME.pid "$DAEMON" nginx && exit 0 || exit $&#63;
   ;;
 *)
  N=/etc/init.d/$NAME
  echo "Usage: $N {start|stop|restart|reload|force-reload|status}" >&2
  exit 1
  ;;
esac
 
exit 0

Copy after login

linux下怎重启nginx

在nginx的早期版本，nginx重启需要通过kill命令向nginx发送信号来实现nginx的重启。
但是，现在，nginx增加了-s选项，实现nginx的停止，重新加载功能。
1. 如果是平滑的重启nginx，可以用./nginx -s reload命令实现nginx的平滑重启。
2. 如果是非平滑重启，则可以先停止nginx，然后再启动：
./nginx -s stop && ./nginx

当我们修改nginx配置后，希望重启nginx以便让nginx生效，此时为了保证nginx在重启阶段还能够提供正常的服务，一般采用平滑重启的方式（reload）重启nginx。此时，nginx会加载新的配置，然后fork出新的worker进程。同时，master进程会向老的worker进程发送信号，告诉老的worker进程当前的情况。老的worker进程受到master进程的信号后，如果当时没有处理请求则会退出，如果正在处理请求，则老的worker进程会处理完请求然后退出。nginx就是通过这种方式去reload新的配置，从而使得在重启的过程中，仍然可以提供服务。